All posts for the month August, 2014

World Ocean Temps Spike to +1.26 Positive Anomaly as Antarctic Polar Amplification Ramps Up

Prospects for a moderate to strong El Nino are fading even as the eventual emergence of El Nino this year grows increasingly in doubt. But despite the failure of a weather system which tends to both spike global sea surface temperatures and atmospheric temperature values, the world’s oceans are screaming with heat, today entering hottest yet daily values for 2014 of 1.26 degrees above the already hotter than normal 1979-2000 average.

*****

The monster Kelvin Wave that so many forecasters believed would set off a moderate-to-powerful El Nino this year by as soon as this summer was crushed by a failure of atmospheric feedbacks. Strong westerly winds did not emerge and powerful high pressure systems both north and south of the Equator kept fueling the easterly trades, which tended to over-ride west wind systems when they did emerge. One of these high pressure zones was the doggedly persistent blocking high sitting off the US West Coast and contributing to the worst drought conditions in a century for California.

The Kelvin Wave was strong enough, however, to set off conditions in which May and June of 2014 were the hottest in the global record and in which ocean surface temperatures during July were also the hottest in the 135 year global record.

During that time, June saw global daily ocean temperature anomalies spike to as high as +1.25 C above the already hotter than normal 1979 to 2000 average in the GFS measure. Today, despite equatorial Pacific Ocean temperatures backing off from June highs, global sea surface temperatures spiked to an extraordinary +1.26 positive anomaly, beating out a time when a very energetic Kelvin wave was dumping a high level of heat into the Equatorial Pacific surface zone.

(Global Sea Surface Temperature Anomaly as of August 29th of 2014. Image source: University of Maine.)

These are extraordinary high sea surface temperatures. And they are likely a continuation of a trend, now four months running, in which the global ocean surface was at or near record highs.

Globally, the hottest areas continued to include a very warm zone off the US West Coast, a zone of +3 to +4 C positive anomaly values in the Bering Sea and behind the arch of the Aleutian Islands between Alaska and Russia, and a zone of much warmer than normal waters from Maine to Greenland to Iceland and Svalbard.

Austral Polar Amplification Heats Up

Even as global ocean surface temperatures shot to record or near record high daily values, Antarctica was undergoing its own major warm-up.

Human greenhouse gasses, more efficient at trapping heat during the long polar night that is winter, and at record warming values in the range of 481 CO2e appeared to be doing their work. For yesterday, temperature anomalies for all of Antarctica spiked to above +3 degree Celsius positive anomaly. Though not as high as the +5 C and greater anomalies observed for the Arctic during the winter of extreme polar vortex disruption that was 2013-2014, the Antarctic heat spike is still quite high. This is especially true for a region that has seen an expanding pulse of cooling fresh water from glacial melt together with strong down-welling and atmosphere to waters heat transfer in the Southern Ocean.

(Antarctic heat anomaly of +2.94 C above the already warmer than normal 1979 to 2000 average on August 29, 2014. Image source: University of Maine.)

As of today, Antarctic heat anomalies were still in the very well above average range at +2.94 C. Most of the excess heat centered over the now destabilized and seaward spreading glaciers of West Antarctica which experienced extraordinary temperatures in the range of 15 to 20 degrees Celsius above average.

This much warmer than normal pool of air spilled above average warmth in all directions. And were it not for the expanding fresh water wedge, salt water downwelling, and strong winds driving a powerful atmosphere to ocean heat transfer in the Southern Ocean, the overall Antarctic temperature anomaly values would be even higher.

Overall, global surface temperatures were at +0.71 C above the 1979 to 2000 average in the global GFS measure today. And with August remaining far warmer than average for most the month, it appears likely that we will have another record or near record warm month. It is almost certain that ocean values with be at record levels and atmospheric values are not too far behind. All this potential for new record heat despite El Nino failing to form and increasingly in doubt.

New Kelvin Wave Not So Strong As the Last

To this point it is worth noting that a new warm Kelvin Wave is now propagating across the Pacific. The current wave is not anywhere near as strong as the event which occurred during winter and spring of 2014. Despite the failure of that Kelvin Wave and the weaker stake of the current wave, NOAA is still predicting a 65% percent chance of El Nino before the end of 2014. This is a lower potential than the 75 to 80 percent prediction from earlier this year and even if El Nino does emerge, consensus models now show a rather feeble iteration peaking at around +0.6 C for mid ocean temperature anomalies.

(Most recent Kelvin Wave as detected by NOAA. Image source: NOAA’s Climate Prediction Center)

Regardless, even if El Nino doesn’t form it appears that 2014 is well on its way to being one of the hotter years in the global record, continuing a long trend of inexorable surface warming.

Links:

University of Maine

NOAA’s Climate Prediction Center

July 2014 Shows Hottest Ocean Surface Temperature on Record

96 Comments

by robertscribbler on August 29, 2014 • Permalink

Posted in Climate Change

Tagged above average ocean temperatures, El Nino, environment, extreme weather, global warming, hot ocean temperatures, human warming, no El Nino yet, record hot ocean temperatures, science, weather

Posted by robertscribbler on August 29, 2014

https://robertscribbler.wordpress.com/2014/08/29/world-ocean-temps-spike-to-1-26-positive-anomaly-as-antarctic-polar-amplification-ramps-up/

Leaked UN Report Shows Failure to Swiftly Act on Climate Change Results in Catastrophic Harm

Over the past week, various sources have leaked information passed on to them by the UN’s Intergovernmental Panel on Climate Change (IPCC). The reports highlighted stark consequences for continued failure by policy makers to act, providing a general view of rapidly approaching a terrible and very difficult to navigate global crisis.

Dancing on the Edge of a Global Food Crisis

The first weak link for human resiliency to climate change may well be in our ability to continue to supply food to over 7 billion people as weather and sea level rise takes down previously productive agricultural regions. And the leaked UN report hints at a currently stark global food situation in the face of a risk for rising crisis.

For the Mekong Delta, as with more and more agricultural regions around the world, by August of 2014, global warming was already a rampant crop killer.

The Vietnamese government this year made efforts to stem the effects of warming-driven sea level rise and saltwater invasion as 700,000 hectares of rice paddy farmland in one of the world’s most productive regions came under threat. But the efforts have not entirely prevented intrusion and many plants show the tell-tale yellowed leaves that result from salt water leeching into the low-lying freshwater fields that have, for so long, yielded a bounty of grain. Many farmers are now facing losses of up to 50% for crops that used to produce like clockwork year-in, year out. This year, the salt water has intruded as far as 40 to 50 kilometers inland, delivering a substantial blow to the region’s agriculture. But the potential effects, given even the IPCC’s conservative projections of sea level rise in the range of 29 to 82 more centimeters this century, are stark for this and other low-lying agricultural regions.

(UN FAO food price index since 1961. Note the spike since the mid 2000s coinciding with energy price increases and ramping crop destruction due to climate change. The first price spike during 2008 was primarily energy price related, but the second spike during 2011 coincided with a string of some of the worst spates of crop-destroying weather on record. Note that prices remained historically high following the 2011 spike, an indication that global agriculture was having difficulty meeting increased demand, despite the price signal. Image source: FAO.)

Around the world, tales from agricultural zones are much the same — ever-increasing challenges due to climate change driven droughts, floods, fires, spreading diseases, invasive species, and sea level rise. Since mid 2010, these added stresses have driven the United Nation’s FAO food price index — an indicator for global food security — above 200 for four years running. Historically, international insecurity and food-related unrest have sparked when prices hit and maintain above 208. And though the price of food has fallen somewhat from highs nearing 230 during 2011 to a range near 204 during 2014, the ongoing and worsening impacts of climate change mean that new and starker challenges to feeding the world’s 7 billion and growing population are just over the horizon.

(Instances of food riots from 2004 to late 2012 correlated with global food prices. Image source: ABC.)

These climate change related impacts are ongoing and, according to recent scientific reports, have resulted in a 3-5 percent loss of annual grain production for maize and wheat and could result in 10 percent total losses in grain production through the early 2020s. But even if agricultural difficulties are somehow delayed through the next decade, the UN report shows climate change eventually winning out by compounding damages that cause:

“slow down [of] economic growth, make poverty reduction more difficult, further erode food security, and prolong existing poverty traps and create new ones, the latter particularly in urban areas and emerging hot spots of hunger.”

Wide-ranging and Terrible Impacts

Of course, damages from climate change aren’t just limited to crops. More extreme weather, vicious heatwaves, rising seas, ocean acidification and anoxia, loss of glacial and ocean ice, rampant wildfires and other jarring impacts are likely to coincide as warming continues to spike higher.

At 0.85 degrees Celsius and 1.5 degrees Fahrenheit warming since 1880, we already see some rather radical impacts. But, according to IPCC, these impacts are likely to seem paltry if human business as usual emissions continue and hit the IPCC projected level of warming by 5.4 C or 9 F by the end of the 21st Century.

For illustration, IPCC provides the following impacts/risk graph:

(Projected risk related to a given level of warming according to IPCC via Bloomberg.)

As a risk-related graph, the analytical function is notably vague. The graph defines risks to unique systems (primarily natural ecosystems or human systems such as agriculture and tourism related to those systems), risks associated with extreme weather (which is self-explanatory), risks associated with distribution of impacts (which generally defines how widespread climate impacts will become), risks associated with global aggregate impacts (this attempts to define the level of net positive or net negative impact, with some positive impacts resulting in an almost neutral net impact early on but overall and increasingly severe net negative aggregate impacts going forward), and risks associated with singular large-scale events (related to catastrophic weather or Earth changes such as glacial outburst floods, methane release, slope collapse and other unforeseen catastrophic, large-scale instances).

For +0.85 C warming above 1880s levels, we can add an imaginary line at +0.25 C above the 1986 to 2005 level. There we find current changes that are now visible and ongoing and that, to us, seem pretty substantial. Along that line, we see risks to some threatened systems from climate change (ramping damage to reefs, agriculture, rainforests etc), a moderate risk of extreme weather events outside the 20th Century norm (and we see these with increasing frequency), we are edging into increasing risks of disruption in some regions (as we’ve seen in Syria, the US Southwest and a shot-gun of other areas), we are edging into a zone where most people are starting to see impacts (though these are still comparatively minor for many, but increasingly bad for a growing minority), and we are at low but rising risk of catastrophic events (major glacial outburst floods, methane release, continent spanning megastorms etc).

And given this context, we can see how much worse things will be with just another 0.25, 0.75, or 1.5 C of warming. By the end of this century, under business as usual, we are at the top of the risk graph and would be witnessing events that many of us would now consider both strange and terrifying.

IPCC researchers add the following chilling and entirely apt caveat (Bloomberg):

“Many aspects of climate change and associated impacts will continue for centuries, even if anthropogenic emissions of greenhouse gases cease,” the researchers said. “The risk of abrupt and irreversible change increases as the magnitude of the warming increases.”

To this point, I would like to add that some changes are now irreversible, but the worst impacts are not, as yet, unavoidable.

The Terrifying Rate of Human Emission

IPCC now recognizes that human greenhouse gas emissions are at or near worst case levels. Current global volume of all human greenhouse gas emissions is now likely in excess of 50 gigatons of CO2 equivalent (CO2e) each year. As of the latest IPCC assessment, the emission stood at 49 gigatons CO2e for greenhouse gasses each year by 2010 (more than 13 gigatons carbon). This rate of emission, if continued and/or increased through the end of this century, is enough to trigger Permian Extinction event type conditions over the course of just three centuries or less (the Permian Extinction took tens of thousands of years to elapse) a shock that is unprecedented on geological time-scales.

(Global greenhouse gas emissions from 1970 through 2010. Included are human emissions from CO2 through fossil fuel burning, CO2 through land use, Methane emissions, N2O emissions, and fluoride gas emissions. Image source IPCC via Bloomberg.)

This immense volume of emission is probably more than 6-10 times faster than at any period of the geological record. Its vast and violent outburst is worse than any of the great flood basalts of Earth’s long history. And its pace of out-gassing will rapidly overwhelm any of Earth’s carbon sinks, likely turning many of these into sources. The human greenhouse gas emission is, therefore, likely on track to be the worst greenhouse gas disaster the Earth system has ever experienced.

Rapid Mitigation is the Only Moral Option

To this point, IPCC recommends rapid mitigation to prevent the worst possible consequences.

“Risks from mitigation can be substantial, but they do not involve the same possibility of severe, widespread, and irreversible impacts as risks from climate change, increasing the benefits from near-term mitigation action,” the authors wrote.

IPCC finds that the cost of mitigation is low so long as policies aim to rapidly reduce energy consumption, rapidly affix existing carbon emitting infrastructure with carbon capture and storage, leave new and unconventional fossil fuel sources in the ground while allowing existing sources to go into decline or be replaced outright by alternative energy, keep current nuclear capacity running until the end of its life expectancy, and provide all replacements and new additions for energy generation through various renewable energy sources (my personal opinion about the carbon capture policy position is that it creates moral hazard by giving the fossil fuel interests wiggle room, but that discussion is for another post).

IPCC model runs show a stark difference between business as usual fossil fuel emission based warming and warming by end century under rapid mitigation:

(Approximate 1.9 C warming by 2100 under rapid mitigation vs 5.4 C warming under business as usual. Note that potential substantial Arctic and marine carbon store feedbacks are likely not fully taken into account and may require additional mitigation to alleviate. Source: IPCC via ThinkProgress.)

The approximate 3.5 C difference between the rapid mitigation scenario and the business as usual scenario is a glaring contrast between a world in which humans can cope with and reduce the long term impacts of difficult to deal with climate change and a world in which climate change essentially wrecks all future prospects. Between these two choices, there is only one moral and, indeed, sane option.

Overall, the most recent IPCC report is likely to receive broad criticism from climate change deniers for its more direct language. And this is probably a good sign that it is on the right track. In my view, however, the report is still cautious and leaves out a number of key risks, including significant amplifying feedbacks from Arctic carbon stores and other carbon stores, or simply deals with them by implication without further analysis (such as through the use of the term ‘large-scale singular events’ in the graph above). So, in some ways, the report hides actual risks behind obtuse language and dense scientific terminology.

Given the current behavior and mindset of policy-makers, an even more direct approach may well be necessary. That said, the current IPCC report, as alluded to by these leaks, appears to be a far more impactful summation than its previous iterations. Given the very narrow window in which we have to prevent the most severe future harm, such a shift is appreciated and highly appropriate.

Links:

Climate Scientists Spell Out Stark Danger and Immorality of Inaction in New Leaked Report

Climate Trends and Global Crop Production Since 1980

Irreversible Damage From Climate Change

UN Draft Report Lists Unchecked Emissions Risks

Climate Change Impacts to Mekong Delta

Rising Sea Level Means Trouble For Vietnam’s Rice Farmers

FAO World Food Price Index

Hat Tip to TDGS

52 Comments

by robertscribbler on August 29, 2014 • Permalink

Posted in Climate Change

Posted by robertscribbler on August 29, 2014

https://robertscribbler.wordpress.com/2014/08/29/leaked-un-report-shows-failure-to-swiftly-act-on-climate-change-results-in-catastrophic-harm/

Methane Monster’s Grumbling Goes Global: 570 Methane Plumes Discovered on Atlantic Ocean Sea Floor

Greenhouse gas concentrations spike — heating the atmosphere and the deep ocean after a period of glaciation during which vast stores of carbon accumulated. Massive volumes of this carbon lay dormant — trapped in frozen ground and in clathrates on the sea bed. As the ocean and airs warm, these carbon stores release causing a massive spike of additional greenhouse gasses to hit the atmosphere and setting off ever-more-rampant heating. The cycle continues until much of these carbon stores out-gas, pushing the Earth into a hothouse state.

Sound chillingly familiar?

What I’ve just described is the process that most scientists believe occurred during the worst mass extinction event in the geological past — the Permian Extinction. A hothouse event that killed 95% of life in the oceans and 70% of life on land. And what humans are now doing to the Earth’s airs and waters through CO2 and related greenhouse gas emissions may well be shockingly similar.

(Substantial methane release from the East Siberian Sea surface during early August likely in the range of 0.5 to 1 megatons points toward both atmospheric methane overburden and likely carbon store instability and large scale out-gassing in the Arctic. Image credit: Sam Carana and NOAA.)

From the Arctic tundra to the Arctic Ocean sea bed to the Atlantic Ocean, we have growing evidence of methane and CO2 releases from carbon stores that may well be at the start of just such a large scale feedback. Time and time again, we see evidence of significant (but not yet catastrophic) emissions from Arctic methane stores (see image above). With each passing year, the methane overburden in the Arctic air grows. And we have had increasing evidence of a growing volume of releases from the East Siberian Arctic Shelf sea bed, to the methane emitting melt lakes proliferating over the thawing permafrost, to the chilling and terrifying methane blow holes discovered this year in Siberia.

As of 2011, many Arctic scientists believed that human-caused heating could set off methane and CO2 emissions from that region equivalent to between 10 and 35 percent or more of current human fossil fuel burning by the end of this century. The lower boundary of this range is with rapid reductions in human greenhouse gas emissions, the upper boundary is under business as usual. Such a 35 percent equivalent emission, happening year on year for centuries, would be more than enough to push Earth into a runaway hothouse scenario without any further human greenhouse gas releases. And it is this scenario, or the even more chilling worse case of very rapidly ramping Arctic methane outbursts, that we should be very concerned about.

Atlantic Methane Hydrate Destabilization off US East Coast

Unfortunately, the vast carbon store in the Arctic is not the only potential source of heating feedback carbon release. For around the world, upon and beneath the ocean sea bed, billions of tons of methane lay stored in clathrate structures. These stores are separate from the large carbon deposits in the Arctic. But they are no less dangerous.

In 2012, Nature issued a study that found a store of clathrates composing billions of tons of methane was now destabilizing off the US East Coast. The study predicted large-scale releases in the multi-gigaton range from the southern region of the East Coast methane clathrate store due both to changes in the Gulf Stream circulation and to warming bottom waters — both impacts set off by human-caused climate change. The study was uncertain how fast such a release could occur, but noted that the eventual release was likely due to wide-scale clathrate degradation associated with ocean bottom warming.

(Methane Seep off US East Coast. Image source: Nature.)

This year, research vessels returned to the region and found 570 plumes of methane venting from destabilized clathrate stores there. This result was surprising due to the fact that only three methane seep sources had previously been identified. The plumes were discovered in 50 to 1,500 meters of water, with most of the seeps occurring at between 250 and 600 meters depth, along a zone stretching from Cape Hatteras to Georges Bank. The seeps ranged in age from recent to 100 or even 1000 or more years old. Overall, the prevalence of seeps was more widespread than expected.

“This is the first time anyone has systematically mapped an entire margin,” Christian Berndt, a marine geophysicist at GEOMAR in Kiel, Germany, who was not involved in the study, said in an interview to Science Magazine. “They found that there was much more methane coming out than was suspected beforehand.”

Currently, only a small amount of the methane being released from the sea bed off the US East Coast is likely hitting the atmosphere and is probably not contributing anywhere near the volume of known emission sources from the East Siberian Arctic Shelf. Most of the gas is just absorbed by the water column, increasing acidification in the region and contributing to anoxia. But the known clathrate store off the US East Coast is very significant and large scale releases could result in much more widespread anoxia, acidification, and provide a substantial atmospheric heating feedback to human-caused warming. Very large and catastrophic outbursts could also result in slope collapse and generate tsunamis along the US East Coast. A concern that researchers may also need to further investigate.

Overall, as much as 300 to 400 gigatons of methane could be at risk and even a fraction of this store hitting the atmosphere would cause serious and lasting harm.

Overall, it is estimated that at least 30,000 methane seeps like the ones recently discovered off the US East Coast may now be active with potentially 10,000 in the East Coast region now under investigation. The current study provides a good base line for further exploration of what may well be a rather significant problem going forward.

“It highlights a really key area where we can test some of the more radical hypotheses about climate change,” said John Kessler, a professor at the University of Rochester, in an interview with the New York Times. “How will those release rates accelerate as bottom temperature warms?”

The acceleration would indeed have to be substantial to add to the already significant and troubling Arctic methane and CO2 release. But the sea bed stores are vast and the rate of human warming is very rapid. So the global ocean clathrate store is something to keep under close watch and the discovery of yet one more source that is already emitting at faster than expected rates is not at all comforting.

Links:

Widespread Methane Leakage From Sea Floor on Northern US Atlantic Margin

From Glaciation to Hothouse — Why the Permian Extinction is Pertinent to Human Warming

Recent Changes to the Gulf Stream Causing Widespread Hydrate Gas Destabilization

New Study Shows East Coast Hydrates Destabilizing

High Risk of Permafrost Thaw

Sam Carana

NOAA

Scientists Discover Hundreds of Methane Leaks Bubbling Up From the Atlantic Sea Floor

Sea Level Rise Found to Cause Slope Collapse, Tsunamis, Methane Release

54 Comments

by robertscribbler on August 27, 2014 • Permalink

Posted in Uncategorized

Tagged 570 Methane Seeps, Arctic methane release, East Coast Methane Release, East Coast Methane Seeps, environment, extreme weather, Global Ocean Clathrate Release, global warming, human warming, methane monster, science, slope collapse, weather

Posted by robertscribbler on August 27, 2014

https://robertscribbler.wordpress.com/2014/08/27/is-human-warming-releasing-a-global-methane-monster-570-methane-plumes-discovered-on-atlantic-ocean-sea-floor/

Greenland’s Late August Rain Over Melt Ponds is a Glacial Outburst Flood Hazard

Glacial melt ponding on steep ice faces. Above freezing temperatures for an extended period. Storms delivering rainfall to the glacier surface.

These three events are a bad combination and one that, until recently, we’ve never seen before for Greenland. It is a set of circumstances directly arising from a human-driven warming of the great ice sheet. And it is one that risks a highly violent and energetic event in which melt ponds over-top and glaciers are flushed and ripped apart by surges of water rushing for scores of miles over and through the ice sheet. Major melt pulse events called glacier outburst floods that can result in catastrophically large volumes of water and broken ice chunks issuing from the towering, melting glaciers of Greenland and Antarctica.

It’s a risk we face now, as the circumstances driving the risk of such an event are present today.

Rain over Ice on August 21, 2014

Over the past four days a high amplitude wave in the Jet Stream and coordinate domes of high pressure over Greenland have delivered well above average temperatures for the great Northern Hemisphere ice sheet. Near and just to the east of the Jakobshavn glacier on the West Coast of Greenland, temperatures have ranged between 5 and 10 degrees Celsius above average.

(GFS temperature and rainfall analysis for Greenland on August 21, 2014. Note the above freezing temperatures and rainfall over the region of the Jacobshavn Glacier for today. Image source: University of Maine’s Climate Reanalyzer.)

What this means is a persistence of average temperatures in the range of 34-40 degrees (F) over large sections of Greenland’s Jakobshavn glacier. Melt level readings over a region that has now experienced ongoing surface ponding for more than 60 days.

But these warm temperatures, providing yet more heat forcing to melt the ice, aren’t the only extreme weather factor for the Jakobshavn glacier today. For today has brought with it a warm, wet over-riding airmass emerging from Baffin Bay and the Atlantic Ocean to the south. The warm air, coming into contact with the cooler glacier air is condensing and disgorging a series of rainstorms, dumping above-freezing water into the Jakobshavn’s already swelling pools.

Some of these effects are directly visible in the LANCE MODIS satellite imagery provided by NASA.

Glacial melt ponds are indicated in the satellite shot below by light-to-dark blue splotches on the glacier surface. Shallow surface melt ponding and pooling is indicated by a thin skein of light blue. In the left frame below, you can see the extensive and large melt ponds in the region of the Jakobshavn Glacier on August 18, 2014. For reference, the largest of these ponds are between 2 and 4 kilometers across. Also note the pale blue color of the ice near the larger ponds, indicating extensive smaller ponds in the region.

In the right frame, we have today’s LANCE-MODIS satellite shot. You will note that the entire frame is covered by cloud but that you can still see the blue undertone of the melting glacier below the rain-bearing clouds.

(LANCE MODIS satellite shot of the Jakobshavn Glacier on August 18 [left frame] and August 20 [right frame]. Note the widespread melt ponds and blue ice indicating smaller ponds over the glacier structure. Image source: LANCE MODIS.)

Assessing Glacial Outburst Flood Risk

Some day, as Greenland continues to warm under the human heat forcing and as more hot air invasions ride up over the ice sheet, a period of warmth followed by rainstorms may well set off a major outburst flood event. The water content in melt ponds over the glacier may well be far greater than what we see now and a series of over topping events, starting higher on the ice sheet and magnifying toward the ice sheet base, would set of a chain of events leading to such a flood.

Risks for this kind of event today may well be moderate to low. The glaciers at this point are craggy and much of the flood waters shunt through holes in the ice to water pockets or to the glacier base. But eventually, as the glacier contains more water through subsequent years of melt, flooding and damming will be more prevalent throughout the ice sheet. And so risks will likely be on the rise.

Other than similar events occurring in the Himilayas, we don’t really have much of a context by which to judge risk for large Greenland outburst flood events. We do know that melt ponding is now quite extensive in this region and we do know that the glacier itself is rather unstable — moving with rapid speed toward the ocean and containing pockets of melted water from past melt pond formation over the last two decades.

For today, I’m pointing out the current rainfall over ice and melt ponding event as part of a larger and dangerous trend, one that is likely to play a primary role in the pace and violence of Greenland melt going forward.

(Photograph of a zodiac on the surface of one of Greenland’s very large melt ponds. Image source: Earth Observatory.)

Links:

University of Maine’s Climate Reanalyzer

LANCE MODIS

The Glacial Megaflood

168 Comments

by robertscribbler on August 21, 2014 • Permalink

Posted in Climate Change

Tagged basal melt, climate change, environment, extreme weather, glacial megaflood, glacier outburst flood, glacier outburst flood risk, global warming, Greenland ice sheet, greenland melt, greenland melt ponds, ice dam, melt, rain over ice sheets, record Greenland melt, science, surface melt, weather

Posted by robertscribbler on August 21, 2014

https://robertscribbler.wordpress.com/2014/08/21/greenlands-late-august-rain-over-melt-ponds-is-a-glacial-outburst-flood-hazard/

Greenland Ice Loss Increases Fivefold From Late 1990s, West Antarctica Not Far Behind

In the early 1990s, it would have been hard to imagine the rates of glacial ice loss we are seeing now.

There were few ways to accurately measure the Greenland Ice Sheet’s mass. Snow fell, glaciers calved. But observations seemed to show that the great, cold ice pile over Greenland was in balance. Snow gathered at the top, glaciers calved at the edges, but human heating of the atmosphere had yet to show plainly visible effects.

At that time, climate scientists believed that changes to the ice, as a result of human caused heating, would be slow and gradual, and would probably not begin to appear in force until later in the 21st Century.

(Extensive surface melt ponding, dark snow near the rapidly melt Jakobshavn Glacier on the West Coast of Greenland in early August of 2014. Image source: LANCE MODIS.)

Ice Sheet Response Starts Too Soon

By the late 1990s, various satellites had been lofted to measure the gravity, mass and volume of structures on the Earth’s surface. These sensors, when aimed at the great ice sheets, found that Greenland, during a period of 1997 to 2003 was losing mass at a rate of about 83 cubic kilometers each year.

This rate of ice loss was somewhat small when compared to the vastness of the ice sheet. But the appearance of loss was early and, therefore, some cause for concern. More monitoring of the ice sheet took place as scientists continued their investigation, for it appeared that the ice sheet was more responsive to human warming than initially believed.

A Doubling After Just Six Years

By 2009 another set of measures was in and it found that the six year period from 2003 to 2009 showed a near doubling of ice mass loss from the Greenland Ice Sheet. Rates of loss had jumped from 83 cubic kilometers each year to around 153 cubic kilometers. The doubling caused consternation and speculation among climate scientists. Greenhouse gas heat forcing was rapidly on the rise and the world’s oceans were warming faster than expected as human emissions continued along a worst case scenario path. It appeared that the ocean was delivering heat to the ice sheet bases even as atmospheric warming was melting larger areas upon the ice sheet surface.

These changes to the massive ice sheets were occurring far more rapidly than previously considered.

(Hundreds foot high edge of the Greenland Ice Sheet in Kangerlussuaq as seen at the end of a long valley and across a cold estuary. Image source: EISCAT Scientific Association.)

The potential for a 3, 6, or even 9 foot or more sea level rise by the end of the 21st Century was raised. Perhaps even more ominous, global climate models were showing that rapid ice melt in Greenland and West Antarctica, should it occur, would play havoc with world weather systems. It was this jump in ice loss, in part, that spurred climate scientist and then head of NASA GISS, Dr. James Hansen to write his book The Storms of My Grandchildren as a warning that rapid mitigation in human greenhouse gas emissions along with a stabilization of atmospheric CO2 at 350 ppm would probably be needed to prevent severe consequences from human-caused warming.

But humans kept emitting at a break-neck pace, spending far more money to build coal, gas and oil based technology, than to reduce energy consumption through efficiencies or behavioral change or to invest in alternatives like wind and solar.

Melt Rates Surge Yet Again

And so, by January of 2014, heat forcing had continued to accumulate at a very rapid pace. CO2e heat forcing had spiked to 481 ppm, enough to melt the entire Greenland Ice Sheet and much of Antarctica as well, if maintained or increased over a long period.

And the Greenland Ice sheet was, indeed, melting at an ever faster clip. For the most recent assessment found that the loss rate from Greenland had again more than doubled — hitting a 375 cubic kilometer per year average during the period of January 2011 through January of 2014.

(Greenland Ice Sheet elevation change in meters as found in a recent report by the Alfred Wegner Institute. Note that all Greenland edge zones are now experience elevation losses. Due to higher elevations at the center of the ice sheet, elevation loss at the edge has an effect that speeds ice sheet motion toward the sea. The effect is similar to pushing down the edge of a plastic swimming pool, but on a much larger scale and with somewhat slower moving ice.)

It was an extraordinary rate of melt now 4.7 times faster than in the period from 1997 to 2003 and 2.5 times faster than during 2003 to 2009. But, likely, it is but one more milestone on the path to even faster melt.

The same study that found the Greenland melt acceleration also saw a tripling of the melt rate of West Antarctic since 2003 to 2009. Together, the ice sheets were found to contribute a combined mass loss of 503 cubic kilometers per year between Greenland and West Antarctic. This vast, and still apparently rising, loss now meant that the two great ice sheets were contributing at least one millimeter per year to sea level rise.

Likely Grim Future For Sea Level Rise

It is likely that mass rate losses will continue to increase until some kind of break or negative feedback comes into play. Similar rates of melt increase would mean an annual 5-8 millimeter sea level rise by 2035 due to Greenland and Antarctic melt on top of a 2-3 millimeter sea level rise from thermal expansion of the oceans and from other melt sources. But even taking into account the cooling effect at the ocean surface from ice melt and fresh water floods, one could easily envision the feared 1-3 foot sea level rise by sometime near mid century and the even more concerning 3-9 foot sea level rise amidst a very intense battle between hot and cold weather systems through to century’s end.

As of 2014, it appears the conditions leading up to the warned of “Storms of My Grandchildren” are well in play and rapidly building.

Links:

Alfred Wegner Institute: Elevation Change of the Greenland Ice Sheet

Greenland Ice Loss Doubles From Late 2000s

LANCE MODIS

The Storms of My Grandchildren

EISCAT Scientific Association

Hat Tip to TodaysGuestIs

72 Comments

by robertscribbler on August 21, 2014 • Permalink

Posted in Climate Change

Tagged Antarctic melt, Antarctica, climate change, environment, extreme weather, global heat forcing, global melt, global warming, greenland, Greenland Ice Loss, Greenland melt rate, heat, human warming, Quintuple ice loss, science, weather, West Antarctica

Posted by robertscribbler on August 21, 2014

https://robertscribbler.wordpress.com/2014/08/21/greenland-ice-loss-increases-fivefold-from-late-1990s-west-antarctica-not-far-behind/

Amazon Rainforest Wildfires Scorch Through Drought-Plagued Brazil During Southern Hemisphere Winter

It’s Winter. Sections of Brazil are experiencing their worst drought in 84 years. Sao Paulo, a city of 9 million, has 97 days of water supply left. And, again, the Great Rainforest is burning.

Over the past few decades a combination of insults including clear cutting, slash and burn agriculture, and rising instances of heatwaves and drought driven by human-caused climate change has resulted in increasingly severe impacts to forested regions around and within the Amazon. Major fires, which were once almost unheard of in the damp, wet regions of the great Amazon delta first cropped up in the late 1980s and early 1990s but have since become more widespread.

(Wildfire outbreak in the Amazon on August 13, 2014. For reference bottom edge of frame is 180 miles. Image source: LANCE MODIS.)

Now, a combination of basement burning of root systems in the Amazon, heat, and drought are resulting in a kind of existential crisis for a region that has been described by scientists as ‘the Earth’s lungs.’ It is a situation that brings with it the ever-increasing risk of major fire outbreaks. And as of 2012 and 2013, after a period of ever-increasing burning, dry equatorial winters have brought with them extraordinarily severe fires that have torn through forested zones and threatened infrastructure. In one such instance during 2013, a major region-wide blackout was set off by a fire originating in Brazil’s rainforest.

And now the burning has begun anew.

For as of August 13 of this year, large wildfires were erupting within the Amazon near regions of cleared forest and deep within the forest interior. Over the past week, these fires expanded and became more widespread. Now, much of Brazil is under a pall of smoke from wildfires that have expanded to range over a very broad rainforest region.

(Smoke from wildfires covering almost all of the Amazon on August 20, 2014. For reference, bottom edge of frame is 1,000 miles and the Amazon River flows from middle left until it terminates at upper right into the South Atlantic. Image source: LANCE MODIS.)

News media and public reporting of fire instances within Brazil are sketchy. But the satellite picture doesn’t lie. Observational estimates place these fires in the range of 500,000 to 1,500,000 acres initially. But given the fire intensity, they are likely to burn on for weeks to months.

Conditions in Context: 3 Percent of the Amazon Lost To Fire From 1999-2010

The new fires originated in a region now known to harbor ongoing understory fires. These fires burn beneath the interlaced root systems of the Amazon and have been discovered to continue to smolder year-round. During times of intense heat and drought, these fires can break through to the surface and more intensely burn through large swaths of forestland. After burning, they sink back into the understory, waiting for another heat/drought trigger.

Last year, NASA published a study which found that fully 3 percent of the Amazon had likely been lost to fires during the period of 1999-2010. A primary culprit for these losses was found to be understory fires, which NASA identified as a significant threat to the Amazon forest system.

(3 percent or 33,500 square miles of a 1.2 million square mile area under investigation burned from 1999-2010 according to a 2013 NASA study. Location of fires indicated in orange.)

Perhaps most significantly, the NASA study implicated climate change as the primary cause for these fires, finding that drought and heatwaves related to increases in human heat trapping gasses had depleted ground moisture levels, resulting in a greatly increased instance of fires.

Post 2010, the satellite record indicates that these fires have continued to grow in intensity. And so the risk to the Amazon expands.

Overall, the Amazon currently stores about 120 gigatons of carbon. It represents about 10% of the global uptake of carbon from the atmosphere through forest tree and plant respiration. But as the Amazon burns and becomes deforested, it shifts from being a carbon absorber to a carbon emitter. Currently, depleted and burning areas of the Amazon are estimated to emit 500 megatons of CO2 each year. And though this has not yet tipped the balance to make the Amazon a net carbon emitter, human climate change and deforestation is driving the world’s largest rainforest rapidly in that direction.

Under human driven climate change and deforestation, the heat and drought situation will only worsen for Brazil. Even without clear cutting, the fires will expand and, eventually, the rainforest will be consumed. Without substantial mitigation action by humans, it is bound to happen. The vast carbon store that is the rainforest will almost certainly begin adding to the already rapacious human heating effect. A process that will continue for decades and will only end once the rainforest is gone entirely.

Links:

Brazil Drought: Sao Paulo Could Run Dry in Less Than 100 Days

NASA Study Shows 3 Percent of Amazon Lost to Fires from 1999 through 2010

LANCE MODIS

Forest and Climate

Effects of High Frequency Understory Fires on The Amazon Rainforest

Fire Spurs Blackout That Shuts off Power for 50 Million

Hat tip to Bernard

45 Comments

by robertscribbler on August 20, 2014 • Permalink

Posted in Climate Change

Tagged Brazil drought, Brazil fires, climate change, environment, extreme weather, fires, global warming, human warming, science, weather, wildfires

Posted by robertscribbler on August 20, 2014

https://robertscribbler.wordpress.com/2014/08/20/amazon-rainforest-wildfires-scorch-through-drought-plagued-brazil/

US Wind Hits Record Low Price of 2.5 Cents Per Kilowatt Hour; 9-12 Gigawatts of Renewable Energy Additions Ramp up for 2014

The excuses for failing to rapidly adopt renewable energy systems grow thinner and more contorted with each passing day…

During 2013, costs for wind energy plunged to record low levels as both wind and solar set to make substantial new capacity gains in 2014 and 2015, according to a recent report from the US Department of Energy.

PPA (Power Purchase Agreement) pricing for wind during 2013 plunged to the very low range of 2.5 cents per kilowatt hour after levelized costs were included for new wind energy projects. For comparison, the average range of PPAs for all new energy sources in 2013 was 2.5 to 5 cents per kilowatt hour and included wind, solar, natural gas and coal. This made wind energy the least expensive source for new energy in 2013 following a long trend of overall falling prices.

(Price of wind hits all time low in 2013 at 2.5 cents per kilowatt hour. Image source: US Department of Energy.)

Solar prices also fell to within competitive ranges, leading to record adoption rates for that energy source for the US in 2013.

New wind generation is expected to hit between 4 and 6 gigawatts in 2014 and between 5 and 9 gigawatts in 2015. Overall, 13 gigawatts of new wind energy capacity is now under construction, with the bulk focusing on the wind-rich region of the central US.

Solar is also expected to make strong gains in 2014 by adding between 5 and 7 gigawatts of new capacity. Rapidly increasing US growth in solar energy installations has been led by a combination of factors including plummeting prices and a rising adoption of home solar energy through rooftop leasing arrangements targeted to save consumers money on their power bills.

By end of 2014, total installed wind capacity is expected to hit around 74 gigawatts in the US. Meanwhile, US solar capacity is likely to climb above 18 gigawatts by year end. Altogether, these combined energy sources, when taking capacity factor into account, will have produced about 5% of the US’s electricity.

(US renewable energy net electrical generation from 2013 [historic] through 2018 [projected]. Image source: SUN DAY Forecast using US Energy Information Agency sources.)

With new construction projects continuing, total US renewable energy generation is expected to exceed 13.4 percent by the end of 2014 and 16.11 percent by the end of 2018.

Strong Gains Necessary to Mitigate Human-Caused Climate Change, Barriers to Adoption are Now Chiefly Political

Though the combined continued net price drop and cumulative substantial renewable energy generation gains are encouraging, they will need to advance at ever faster rates if we are to have much hope for rapidly mitigating the worst effects of human caused climate change. US generative capacity additions for renewables should probably be in the range of 2-4 times their present rate of adoption and goals should be set for the total replacement of US ghg emitting generation capacity by or before 2050.

With prices for renewable electricity generation now at levels competitive with traditional fossil fuels, and, in the case of wind, far less than fossil fuels, the primary barrier to adoption is now political. Fossil fuel related organizers have, through lobbying and media related efforts, worked on a number of fronts to water down renewable energy incentive legislation and slow or block policy measures that would speed their adoption. Many of these groups are aligned with conservative members and climate change deniers in Congress, but also include a broad array of outside organizations.

These groups represent a final, but strong road block to adoption of permanent mitigations to climate change with broad ranging benefits such as practically unlimited base fuel sources and freeing economic systems from the specter of energy scarcity and insecurity. Given both the lurking risks of human-caused climate change and the prospective benefits of widespread renewable energy generation, the time for a broad push for rapid adoption of renewable energy systems is now.

Links:

US Department of Energy Wind Energy Report for 2013

SUN DAY Forecast

Price of Wind at All Time Low of 2.5 Cents Per Kilowatt Hour

July 2014 Shows Hottest Ocean Surface Temperatures on Record as New Warm Kelvin Wave Forms

According to NOAA’s Climate Prediction Center, July of 2014 was the 4th hottest in the 135 year global temperature record. Land surface temperatures measured 10th hottest in the global record while ocean surface temperatures remained extraordinarily hot, tying July of 2009 as the hottest on record for all years on measure over the past two centuries.

Overall, land temperatures were 0.74 C above the 1950 to 1981 average and ocean surface temperatures were 0.59 C above the same average.

These new record or near record highs come after the hottest second quarter year in the global temperature record where combined land and ocean temperatures exceeded all previous global high temperatures in the measure.

Much Hotter Than Normal July

Few regions around the globe showed cooler than average temperatures during July with zones over the east-central US, in the Atlantic just south of Greenland, and off South America in the Southern Ocean as the only regions showing cooler than normal temperatures. Record warmest temperatures ranged from Scandinavia to Iceland to Northeast Siberia, from California to Alaska to the Northeast Pacific, along a broad stretch of Pacific Ocean waters east of the Philippines and New Guinea, in pools in the North and South Atlantic Oceans off the coasts of North and South America, and in spots from Australia through the Indian Ocean to South Africa.

(Land and Ocean temperature anomalies for July of 2014. Image source: NOAA’s Climate Prediction Center.)

Overall, most of the surface of the Earth featured above average to record warmest conditions, while a minority of the Earth’s surface showed average or below average temperatures.

These new global heat records were reached even as slightly cooler than average waters began to up-well in the critical Eastern Equatorial Pacific region. A powerful Kelvin Wave that initiated during late winter and spring of 2014 failed to set off a summer El Nino and finally faded out, reducing heat transfer from Pacific Ocean waters to atmosphere. Even so, the ocean to atmosphere heat dump was enough to set off two record hot months for May and June and a record hot ocean surface month for July as ocean surface waters remained extraordinarily warm across many regions.

(Ocean surface temperatures remained at or near record hot levels during July and August of 2014 despite a failed El Nino development in the Equatorial Pacific. The above graphic shows global water temperatures for August 18 at an extraordinary +1.13 C above the already hotter than normal 1979 to 2000 average. Image source: University of Maine.)

New Warm Kelvin Wave Begins to Form

Though the atmosphere failed to respond to a powerful Kelvin Wave issuing across the Pacific earlier this year, stifling the development of a predicted El Nino, it appears a new warm Kelvin Wave is now beginning to form. Moderate west wind back bursts near New Guinea initiated warm water down-welling and propagation across the Pacific Ocean during July and early August. The down-welling warmth appeared to link up with warm water upwelling west of New Guinea and began a thrust across the Pacific over the past week.

As of the most recent sub-sea float analysis, anomalies in the new Kelvin Wave ranged as warm as 4-5 C above average:

(New warm Kelvin Wave forming in the Equatorial Pacific. Image source: Climate Prediction Center.)

These sub-sea temps are rather warm for an early phase Kelvin Wave and may indicate another ocean to atmosphere heat delivery is on its way, despite a broader failure of El Nino to form by this summer.

Typically, strong Kelvin Waves provide the energy necessary for El Nino to form. The heating of surface waters due to warm water upwelling in the Equatorial Pacific tends to set off atmospheric feedbacks that perpetuate an El Nino pattern in which waters remain warmer than average in the Central and Eastern Equatorial Pacific for many months. Without these atmospheric responses, El Nino cannot form.

During 2013 and 2014, strong Kelvin Waves forming during spring time were not enough to over-ride prevailing and historically strong trade wind patterns thereby allowing El Nino to emerge.

Atmospheric ‘Hiatus’ is No Halt to Global Warming

During recent years, scientific analysis has confirmed that a negative Pacific Decadal Oscillation together with record strength trade winds has suppressed El Nino formation and ocean to atmosphere heat transfer, leading to a temporary slow down in atmospheric temperature increases even as world ocean temperatures spiked.

(Global ocean heat content for 0-2000 meters of depth shows inexorable upward trend despite the so-called atmospheric warming hiatus. Image source: NOAA Ocean Heat Content.)

This natural variability, which typically lasts for 20-30 years began around the year 2000 and has continued through 2014. During such periods of negative PDO, we would expect rates of atmospheric warming to cease or even to go slightly negative. Unfortunately, even though PDO has been negative for nearly 15 years, a phase which during the 1940s to 1970s drove 0.35 C of transient atmospheric cooling against an overall larger warming trend, we have still seen atmospheric warming in the range of 0.1 C per decade.

This is bad news. For as ocean heat content is spiking, the transfer from atmosphere to ocean has not been enough to even briefly cut off atmospheric warming. And at some point, the oceans will deliver a portion of their latent heat back to the atmosphere, causing an even more rapid pace of temperature increase than was seen during the 1980s through 2000s period.

In other words, we’ve bent the cycle of natural variability to the point where we see warming, albeit slower warming, during times when we should have seen atmospheric cooling. And all indicators — radiative balance measured by satellite, deep ocean water temperatures, glacial melt, and atmosphere — show ongoing and inexorable warming.

Links:

NOAA’s Climate Prediction Center

University of Maine

NASA: ‘Haitus’ in Global Surface Temperatures Likely Temporary

NOAA Ocean Heat Content

66 Comments

by robertscribbler on August 18, 2014 • Permalink

Posted in Climate Change

Tagged 4th hottest July on record, atmosphere warming, climate change, environment, global warming, heat forcing, human warming, NASA, NOAA, Ocean warming, radiative balance, record hot ocean July 2014, science, warming, weather

Posted by robertscribbler on August 18, 2014

https://robertscribbler.wordpress.com/2014/08/18/july-2014-shows-hottest-ocean-surface-temperatures-on-record-as-new-warm-kelvin-wave-forms/

The Keystone Pipeline, Arctic Methane Eruptions, and Why Human Fossil Fuel Burning Must Swiftly Halt

Human fossil fuel emissions heating the Earth’s airs, waters, and ice.

From historic droughts around the world and in places like California, Syria, Brazil and Iran to inexorably increasing glacial melt; from an expanding blight of fish killing and water poisoning algae blooms in lakes, rivers and oceans to a growing rash of global record rainfall events; and from record Arctic sea ice volume losses approaching 80 percent at the end of the summer of 2012 to a rapidly thawing permafrost zone explosively emitting an ever-increasing amount of methane and CO2, it’s already a disastrous train-wreck.

Since the 1880s, humans have emitted nearly 600 billion tons of carbon into the atmosphere. This vast emission has spiked atmospheric CO2 and CO2e (when all other heat trapping gasses are included) levels to above 400 parts per million and 481 parts per million respectively. According to climate sensitivity and paleoclimate science, these volumes are already enough to increase global temperatures by between 1.5 to 2 C this century and 3-4 C long term.

At the current carbon emissions rate of more than 10 billion tons each year and growing at around 2 percent, humans will have emitted a trillion tons of carbon by 2041. Under business as usual fossil fuel burning, more than 2.5 trillion tons of greenhouse gas trapping carbon will hit the atmosphere before the end of this century. It’s a terrible blow we will sorely want to avoid. And one we can only circumvent if we start working to radically curtail carbon emissions now.

Already, we can see instances of emissions-driven climate change and related harm. But what we see now is minor compared to what the future holds in store. We’ve warmed the Earth by more than 0.8 degrees Celsius since the 1880s, and if human emissions do not swiftly come to a halt, we could easily see warming of 4, 5, 7 C or more by the end of this century alone.

(Probability of exceeding 2 C warming this Century [equilibrium climate sensitivity] given a certain level of human greenhouse gas forcing. Note that this study did not include feedbacks from Arctic carbon stores. Also note that current CO2 equivalent forcing without aerosols is around 481 CO2e and with the aerosol negative feedback is around 425 CO2e. Also note that equilibrium climate sensitivity is about half that implied by Earth Systems Sensitivity over the long term [many centuries]. For a final note, consider that the aerosol negative feedback is temporary. Image source: IPCC.)

What Does Warming Look Like If We Continue To Burn Fossil Fuels?

We talk about warming in terms of degrees Celsius and gigatons of carbon burned. But what does it all really mean?

Droughts rampaging through the lower to mid latitudes as the US, Southern Europe, India, the Middle East, Brazil, Australia, the Sahel and sections of China rapidly turn to desert. Stratified oceans turning into extinction engines for fish and marine life, fresh water poisoning due to toxic algae blooms, oceans emitting increasing volumes of poisonous hydrogen sulfide gas into the air. Fires the likes of which we have never seen in the far north as the permafrost burns and methane leaks and explodes from the thawing earth. Floods raging from an atmosphere whose moisture cycling has increased by 30 percent or more. Sea level rise rapid enough to swallow cities and coastlines over the course of decades. Devastating storms emerging from the regions closest to large glacial melt events bordering Greenland and West Antarctica. And all around, more and more people migrating, trying to find a place that is not being gobbled up by desert, incessantly burning, ravaged by storms, flooded, or poisoned by toxic air and water.

(Very large bloom of micro-organisms north of Scandinavia in Arctic waters on August 14, 2014. Arctic waters are rich in nutrients. As they warm and as the sea ice retreats, larger areas are freed for invasion by major blooms of algae and other microbes. Large enough blooms can rob the ocean of oxygen, produce harmful toxins, result in large fish kills, and in the end create dangerous bottom conditions favoring microbial hydrogen sulfide production. Image source: LANCE-MODIS.)

That’s the dark future we inch closer to with every 0.1 C degree of further warming, with each additional megaton of fossil fuel and industrial carbon hitting the atmosphere.

And it is in this context that we must judge our actions and those of our leaders in reducing or in failing to reduce a nightmare that now grows in intensity with each passing year. A nightmare we create and continue to contribute to each time we light a fossil fuel driven fire.

Quibbling over Keystone Carbon Emissions When Tar Sands is the Real Issue

50 billion tons. That’s the amount of extractable, burnable carbon that likely sits beneath what were once the green forests of Alberta and are now little more than a sprawling waste of smoking pits covering tens of square miles. It’s more than 8 percent of the carbon we’ve already dumped into the atmosphere and it’s a volume of carbon we simply cannot afford to burn.

1.7 million barrels of crude oil per day now comes out of a place that Tolkien would likely describe as a mechanized orc warren. Keystone would boost that total to 2.2 million barrels per day, enrich the pit owners, and lay the groundwork for an ever-more-rapid exploitation of this dangerous pile of atmospheric heat-venom.

This week, a recent study out of Stockholm’s Environment Institute found that the pipeline itself would result in at least 4 times the carbon emissions currently estimated by the US State Department. This, well-duh, assessment, came as pit mining cheerleaders such as the American Petroleum Institute and Canadian Industry groups marshaled yet another effort to ram the pipeline through and boost global carbon emissions all in one go.

(Athabasca’s sprawling tar sands operation as seen from space in 2009. The brown ribbon cutting through center frame is the Athabasca river. Image source: NASA’s Earth Observatory.)

In the end, all fossil fuels are terrible, adding to the global nightmare described above. But tar sands are between 12 and 20 percent more carbon intensive than even regular oil, especially when burning of the, worse than coal, coke bi-product is taken into account.

Arctic Methane Explosions — A Result of Human Warming

On the other side of the Arctic from the smoking fossil fuel pits of Alberta, nature is in the process of excavating a new, and no less terrifying, kind of pit. For from the Siberian tundra this summer were discovered three gaping wounds in the earth. Black holes shaped by impressive charges of methane blasting up from beneath the thawing permafrost.

All around the holes were ejected material. A kind of reverse meteor strike or methane volcano in which frozen methane trapped in clathrate beneath the thawing permafrost warmed enough to destabilize. The thawed methane built up in pressure pockets 250 feet or more below ground. Eventually, the pressure became too great and the permafrost overburden erupted, ejecting both earth and methane into the air above.

Eyewitnesses described eruption scenes where the Earth at first began to smoke. The smoke continued to bleed from the ground. Then, there was a loud flash and bang. When the smoke cleared, the methane eruption craters were plainly visible — a rim of sloped and ejected earth surrounding a black, gun-barrel like structure tunneling deep into the ground.

Scientists investigating the sites of these explosions found methane readings of 9.8% at the bottoms of the holes. These are high enough levels to burn if exposed to an ignition source — an atmospheric reading 50,000 times the current and already highly elevated ‘normal’ level.

(One of three freakish craters caused by eruptions of methane from Siberia’s thawing tundra. Image source: Moscow Times.)

The Arctic permafrost alone contains about 1.5 trillion tons of carbon. And when it thaws, a portion of that carbon is bound to be released. It will be broken down by microbes and turned into methane in wet soil. In drier soil, it will form a peat like underburden that will slowly release CO2 by decay or, in more violent instances, by burning in one of the ever more powerful wildfires raging through the Arctic during the increasingly hot summers.

Beneath the icy permafrost layer are pockets of frozen methane in the form of clathrates. These structures are not included in the 1.5 trillion ton carbon estimate for permafrost. They are an addition of likely billions more tons of carbon. And, this year, we can now see a physical mechanism for their continued release — warming and thaw of the permafrost overburden.

The Human-Arctic Feedback Link: Why We Absolutely Must Stop Burning Fossil Fuels, And Swiftly

It is estimated that 1.5-2 degrees Celsius worth of global warming (5-8 C Arctic warming) is enough to thaw all the permafrost and eventually release a substantial portion of the carbon stored in and beneath it. For the Arctic warms much faster than the globe as a whole. In tundra regions, rates of warming over the past three decades have been 0.5 degrees Celsius per decade or more. In the region where the methane craters were discovered, recent temperatures at 5 degrees Celsius above average, during summer heatwaves in 2013 and 2014, have been reported.

As a result of past and current human greenhouse gas emissions, we have already locked in a substantial and significant rate of Arctic carbon emission feedback. And the speed of the Arctic carbon store release will likely determine how rapidly and whether other global carbon stores also respond.

A 2011 survey of 41 Arctic researchers found that rapidly reducing human greenhouse emissions would limit the volume of carbon feedback from the Arctic to 10% of the annual current human emission (or about 1 billion tons of carbon per year) by the end of the 21rst Century, but continue that emission for centuries to come (current Arctic carbon emissions are likely in the range of 30 million tons of methane and 100 million tons of CO2 each year). This is bad news. For we have already burned enough fossil fuel to keep warming on the trajectory to hit 1.5 to 2.5 C this century and 3-5 C or somewhat more long term — a bad result, and one that would likely require extensive human deployment of atmospheric carbon capture technologies. But it is far better than the alternative.

For continued fossil fuel burning would be enough to force a release of Arctic carbon stores equal to 35% or more of the human annual emission, or about 3.5 to 4 gigatons of carbon each year. By itself, this emission would easily represent a mini-runaway pushing the business as usual burning level of 800 ppm CO2 and 1,000 ppm CO2e by end century to 1,400 ppm CO2 + over the course of centuries and likely resulting in 4-7 C + warming this century and 12-14 C + worth of warming long term. A hothouse extinction event to rival or potentially exceed the worst seen in the geological record.

We simply must stop fossil fuel burning as it risks triggering ever greater carbon releases from stores around the globe and especially in the Arctic. In this way, stopping fossil fuel burning or failing to stop that burning is directly related to the ferocity and intensity of the Earth systems response we set off. And halting the Keystone Pipeline is a good approach to curtailing future carbon emission increases. A good start to a long, hard road ahead.

Links:

World Food Security in the Cross-hairs of Human-Caused Climate Change

Nature: Human Warming Pushing Entire Greenland Ice Sheet Into the Ocean

A Song of Flood and Fire

Toledo Algae Bloom Still Ongoing

2012’s Realization of the End of Arctic Sea Ice

The Arctic Methane Monster Exhales: Third Tundra Crater Found

A Faustian Bargain on the Short Road to Hell: Living in a World at 480 CO2e

How Much Will Tar Sands Oil Add to Global Warming?

IPCC 4th Assessment Report

LANCE-MODIS

Terrible Thunderstorms of Fire

How Global Warming Wrecks the Jet Stream, Amps up the Hydrological Cycle

Impact of the Keystone XL Pipeline on Global Markets and Climate Change

NASA’s Earth Observatory

Moscow Times

The Really Scarey Thing About Those Jaw-Dropping Siberian Craters

Methane Flammability

Methane and Frozen Ground

High Risk of Permafrost Thaw

144 Comments

by robertscribbler on August 15, 2014 • Permalink

Posted in Climate Change

Tagged Arctic Scientists, climate change, environment, fossil fuel abolition, fossil fuel emissions, global warming, halting carbon emissions, human fossil fuel emissions, human warming, IPCC report, Joe Romm, methane crater, permafrost, permamelt, science, weather

Posted by robertscribbler on August 15, 2014

https://robertscribbler.wordpress.com/2014/08/15/the-keystone-pipeline-arctic-methane-eruptions-and-why-human-fossil-fuel-burning-must-swiftly-halt/

Terrible Thunderstorms of Fire Over Canada as Arctic Territory Continues Record Burn

They call them pyrocumulonimbus. In layman’s terms — fire thunderstorms.

* * * * *

At the surface, a very large wildfire covering tens of square miles or more can produce quite a lot of heat. The smokey column cast off by the burning blaze rises, generating lift in the atmosphere even as it seeds the air with smoke — nuclei to which water droplets can adhere and from which clouds can form. The rising column contacts water vapor, pushing a vast head of it upward. As this heat-driven column hits the upper reaches of the troposphere, it cools, and the water vapor condenses to the readily available smoke aerosols.

This process produces what is called a pyrocumulus cloud or a fire cloud — a smoke and heat fed version of the normal and far less ominous puffy cumulus clouds we are so accustomed to seeing during summer afternoons. In the pyrocumulus, if the updraft is intense enough, if the fire beneath the cloud strong enough, it erupts into a pyrocumulonimbus — a fire thunderstorm rife with lightning and, if the firefighters are lucky, rain as well.

On August 5, 2014, NASA got an amazing shot of a pyrocumulonimbus cloud exploding over the massive and anomalous wildfires still raging in Arctic Canada. See that horrific boiling cloud stack above fire and smoke in the center-left of the image below? That’s a fire thunderstorm:

(Explosive pyrocumulonimbus cloud near Great Slave Lake on August 5 of 2014. Marked off red areas in the image indicate fire boundaries for individual fires. For reference, Buffalo Lake in the lower left corner is about 35 miles long from end to end. Image source: NASA.)

Dark Carbon Delivery Mechanism

NASA keeps a close watch on fire thunderstorms for a number of reasons. First, they are an indication of the heat updraft intensity rising off the fire beneath. And though they can result in beneficial rains, the storms are, many times, dried out by an over-abundance of smoke. As a result, a dry fire thunderstorm can add to fire hazard by casting off bolts of fire-setting lightning while begrudgingly holding back their moisture load.

Lastly, and perhaps most hauntingly, the fire thunderstorm is a delivery mechanism for black and brown carbon aerosols to the stratosphere, where they can do considerable damage. For if the updraft in the fire thunderstorm is powerful enough, water vapor droplets laden with heat intensifying dark carbon can break the troposphere boundary and enter the stratosphere. There, these dark aerosols trap heat and intensify global warming.

NASA studies have shown that dark aerosols in the stratosphere can have a global warming potential impact up to a million times that of a similar volume of CO2, so even a small amount lofted by fire thunderstorms could have a substantial effect. And the recent very, very intense fires in the Arctic region may well be providing an ominous and very widespread mechanism for just such a dangerous delivery.

Fire Thunderstorms Over Record Arctic Burn Zone

The region where this fire thunderstorm erupted on August 5 is experiencing what is likely the most intense Arctic burn Canada has ever seen. Since the start of this year, and as of August 6, about 2,850,000 hectares (11,000 square miles) have burned in the Arctic Northwest Territory (NWT) alone. This burn area so far for this one territory is almost twice that for the whole of Canada during an average year through early August. For the NWT, it represents an epic burning more than 15 times that of the 15 year average (which is usually 185,000 hectares by this time of year).

(Expected Canadian fire severity increase from 1980s through the end of the 21st Century. Findings based on climate model assessments. Image source: Skeptical Science.)

To say that such a major burn for an Arctic region normally resistant to wildfires is extraordinary may well be an understatement. The blazes this year cast off smoke that covered much of the North American Continent, crossed Greenland and has ridden weather systems around the globe. Many fires have burned non-stop for more than a month, burning the soil and thawed permafrost once the forest fuels are exhausted.

Climate models show an increased prevalence of Arctic wildfires as human warming continues to advance into the Arctic this Century. As of the mid 2000s and throughout this decade, we have seen very intense wildfires raging in Arctic Canada, Alaska, Scandinavia, and Siberia.

(Massive wildfires still burning in Siberia on August 6, 2014. For reference, bottom edge of frame is about 300 miles. Image source: LANCE-MODIS.)

That these fires are an amplifier to human driven warming is probably a given. They dump extra CO2 and methane into the atmosphere, they burn both the more recent forest carbon store and the far older store in the soil, they break the permafrost cap, opening up new fuels for fires in subsequent years and providing avenues for methane and CO2 release, they dump dark carbon over low albedo surfaces such as ice sheets and sea ice, and they produce fire thunderstorms with the potential to inject dark carbon into the stratosphere.

While taking into account the entire Arctic system feedback to human caused climate change will likely be a monumental task, the mechanism of Arctic wildfires to tap and deliver the massive land-based Arctic carbon store to the atmosphere in various ways may be one of the critical elements in the overall feedback system. One that to any rational observer appears to be energetically emerging now. An expanding Arctic outburst of summer smoke and flame that is terrifying to watch.

Links:

NASA

LANCE-MODIS

NASA Captures Rare Pyrocumulus Image

Skeptical Science

193 Comments

by robertscribbler on August 7, 2014 • Permalink

Posted in Climate Change

Posted by robertscribbler on August 7, 2014

https://robertscribbler.wordpress.com/2014/08/07/terrible-thunderstorms-of-fire-over-canada-as-arctic-territory-continues-record-burn/

Hawaii in a Sea of Storms: Abnormally Warm Pacific To Serve Up Unprecedented Double Cyclone Strike?

(Iselle [center frame] and Julio [right frame] take aim on Hawaii [upper left] in most recent LANCE MODIS satellite shot.)

The Northern Pacific has been a very hot place this year. Above the Equator and stretching from Asia to the West Coast of North America, very few regions have witnessed below normal temperatures. And numerous very large hot zones continue to dominate off of Central and North America, between Alaska and Russia, and near Japan.

Overall, Pacific Ocean temperatures today are an excessive +0.93 degrees C above the, already hotter than normal, 1979 to 2000 average. And this extra heat, fueled by global warming, provides energy for the propagation of tropical cyclones well outside of their traditional ranges.

For Hawaii, this means falling under threat of two cyclone strikes within the period of as many days.

Hot Pacific Waters Projected to Spawn More Hawaiian Storms

Cyclone strikes in Hawaii are rare. The last time the island state was pummeled by a tropical storm was during the 1992 El Nino. But now it is threatened by not one, but two hurricanes. It is an event that is unprecedented in the entire satellite record. In other words, we’ve never seen this before.

(Global sea surface temperature anomaly on August 6, 2014, shows an extreme +1.11 C positive temperature departure for the globe and a very strong +0.93 positive temperature departure for the North Pacific. Current science shows that warming ocean waters are extending the northward ranges of tropical cyclones, bringing regions like Hawaii under increasing threat. Image source: University of Maine.)

A shift in hurricanes toward Hawaii wasn’t entirely unexpected, however.

In 2013, Hiroyuki Murakami, from the International Pacific Research Center at the University of Hawaii at Mano together with a team of ocean and atmospheric researchers produced a report for Nature entitled Projected Increases in Cyclones Near Hawaii. The study modeled expected increases in Pacific Ocean surface temperature driven by human-caused climate change in the region near Hawaii. What it discovered was a marked increase in storm formation near Hawaii due to warming waters and related atmospheric changes.

The paper notes:

A key factor in projecting climate change is to derive robust signals of future changes in tropical cyclone activity across different model physical schemes and different future patterns in sea surface temperature. A suite of future warming experiments (2075–2099), using a state-of-the-art high-resolution global climate model^{1, 2, 3}, robustly predicts an increase in tropical cyclone frequency of occurrence around the Hawaiian Islands.

(Change in tropical cyclone frequency between now and 2075-2090 according to model projections produced in the Murakami Paper. Image source: Nature. See Also: Climate Change May Increase Number of Hawaiian Hurricanes)

What these researchers might not have expected was that a very warm Pacific during 2014 might well provide a prelude to what their models were predicting.

Iselle and Julio Barreling On In

For forecasts now show that Hawaii may well be in for a dose of double trouble — an extended period of stormy conditions starting early Friday and possibly not letting up until Monday as the unheard of storm pair barrels on in.

As of the most recent advisory, 85 mph hurricane Iselle was located about 650 miles to the east and southeast of Hilo. Iselle’s present and projected motion toward the west and northwest at around 15 miles per hour is expected to bring the storm, at a strong tropical storm intensity, over Hawaii’s Big Island by Friday. The storm is then projected to pass near the eastern islands before tracking back out into the open Pacific.

Coming directly behind Iselle, Julio is located about 1600 miles east-southeast of Hilo and packs maximum sustained winds of 75 miles per hour. The storm is also expected to weaken to strong to moderate tropical storm status before passing over or near the Hawaiian Island Chain along a track just to the north of Iselle’s path. This would bring the storm near the islands on Sunday, just two days after Iselle.

(Threat cones for Iselle, Julio and Genevieve, all developing in an unusual region near the Central Pacific. Image source: NOAA.)

It’s worth mentioning that a third storm, Genevieve, has also developed in the mid-Pacific within about 1,000 miles of the Hawaiian chain — also in a rather rare region for tropical cyclone formation. Genevieve, however, is not expected to threaten the islands as it tracks westward, taking a long journey toward Asia.

Conditions in Context

These three cyclones generated over warm waters near the central equatorial Pacific. The storms emerged from a convective pattern in a region that typically only shows robust storm development during El Nino.

Though El Nino is not officially ongoing, atmospheric conditions over the past few weeks have become more favorable even as a new warm Kelvin Wave appears to be forming in the waters of the Western Pacific. NOAA still forecasts a weak to moderate El Nino for 2014, but conditions, though somewhat more favorable, remain murky.

(Current sea surface temperatures in the region of Hawaii are a in rather warm and mostly above average range from 26 to 28 C [80 to 83 F], more than enough to sustain powerful tropical cyclones. Generally, water temperatures above 75 F are needed for tropical cyclone formation and strengthening. The primary limiters to both Eselle’s and Julio’s strength remains wind shear, which is expected to reduce both storms to tropical storm status over the coming days. Even so, Hawaii is in for an ongoing period of unprecedented weather. Image source: National Hurricane Center.)

It’s worth noting that a rash of storms in this region is unprecedented in the satellite era and is especially odd considering that ENSO remains neutral. It is very likely that the outbreak is in some way related to the larger Pacific Ocean warming trend associated with human-caused climate change acting together with an El Nino-like development trend.

UPDATE: Due to warm surface waters in the region of Hawaii and somewhat more favorable than expected atmospheric conditions, Iselle is expected to make landfall on the big island of Hawai’i near Hawaii City later today. Expected maximum sustained winds at the time of landfall are near 75 miles per hour.

Hurricane tracking from NOAA brings the storm directly over the Big Island at around midnight after which the storm is predicted to skirt Maui and Oahu:

(NOAA’s most recent projected storm track for Iselle. Image source: National Hurricane Center.)

Links:

Double Trouble: Hawaii Braces For Hurricanes Iselle and Julio

Climate Change May Increase Number of Hawaii Hurricanes

Projected Increases in Cyclones Near Hawai

NOAA

University of Maine

LANCE MODIS

National Hurricane Center

Hat tip to Eleggua

61 Comments

by robertscribbler on August 6, 2014 • Permalink

Posted in Climate Change

Tagged climate change, Dr Jeff Masters, environment, extreme weather, global warming, Hawaii, Hawaii hurricanes, Hiroyuki Murakami, human warming, hurricanes, Hurricanes near Hawaii, science, unprecedented number of Central Pacific Storms, weather

Posted by robertscribbler on August 6, 2014

https://robertscribbler.wordpress.com/2014/08/06/hawaii-in-a-sea-of-storms-abnormally-warm-pacific-to-serve-up-unprecedented-double-cyclone-strike/

Sala Burning: Worst Fire in 40 Years Rages in Sweltering Sweden

(Sala Fire on August 5, 2014 as seen in this LANCE-MODIS satellite shot. For reference the fire front in this shot is about ten miles wide, the smoke plume, two hundred miles long. Image source: LANCE-MODIS.)

It’s been scorching hot in Sweden this summer.

Throughout June, July and into August, the Arctic country has seen day after day of record heat. Thermometers hitting the upper 70s, 80s, and even 90s have become a common event in a land famous for its cooling mists, Arctic lights, and frozen fjords.

By Wednesday of last week, the heat had reached a tipping point. Fire erupted across a ridge line just to the northwest of Sala, Sweden and about 120 kilometers north of Stockholm. The fire rapidly intensified, expanding as nearby towns fell under its shadow.

By Sunday, the blaze spread to encroach upon homes as an all-time high of 33 C (91 F) was recorded in Visby, Gotland even as tumultuous and oddly dry storm clouds brought with them more than 47,000 thousand lightning strikes, shattering Sweden’s all-time one-day lightning record and igniting numerous smaller fires throughout the nation.

On Monday, the situation reached a new extreme as numerous communities were threatened with black smoke billowing into streets and neighborhoods.

By today, more than 1,000 people were evacuated and one soul lost as the blaze expanded to cover a region encompassing 15,000 hectares — about equal to 21,000 football fields or 57 square miles. It is now the largest fire in at least 40 years to affect Sweden.

“I feel deeply concerned for the people who have been asked to leave their homes. I also understand that it is a very tough situation for all those struggling to fight the fire.” — King Carl Gustaf, on Tuesday, August 5

(Forecast high temperatures for Europe on Tuesday, August 5 show readings above 26 C [80] F extending well past the Arctic Circle in Sweden. Image source: WeatherOnline.)

Reports from the scene are of chaos with eyewitnesses comparing the event to a war zone. In Norberg, fires threatened to enter city neighborhoods as residents were obliged to stop seeking help from over 100 volunteers to defend their homes due to risk of loss of life. The decision to halt volunteer efforts came after 9 of the workers were trapped by encroaching flames.

The fires are extraordinarily energetic and appear to have engaged the basement layer. As with other recent Arctic fires in permafrost or near permafrost zones, areas well below the surface soil zone are involved, resulting in risk of a very intense, long time-scale event:

“It’s burning deep down into the ground and across large surfaces,” fireman chief Per Hultman said in an interview with Expressen. “It’s going to take months to extinguish.”

Norberg had not yet issued evacuation orders but officials there were advising the town’s 4,500 residents to pack their bags and be ready to leave at a moment’s notice.

(Sala Fire races across a local hillside on Sunday, August 3rd. Image source: Here.)

A large scale response to the blaze includes a small army of fire fighters from three Swedish regions, the Swedish military and aid from the European Union nations France and Italy.

By Tuesday afternoon local time, the situation remained extremely dangerous with the blaze still raging out of control even as clouds and light rain moved in, providing firefighters with some hope that the fire might lose some of its extreme intensity. However, current reports still indicate that the situation at the site of Sweden’s worst fire in 40 years remained very tenuous with concerns that a shift in the wind to the north might sweep the fire on into Norberg.

Conditions in Context: Human Warming Means More Arctic Fires

Under an ongoing and repressive regime of human-caused climate change fires like the Sala blaze are expected to proliferate and intensify as time moves forward. A combined set of conditions including a permafrost thaw line moving rapidly northward, increasing record heat, temperatures that are rising at a rate twice that of the global average, and deadwood multiplying invasive species are just a few of the ways climate change enhances fire risk. The thawing basement permafrost is particularly vulnerable to fire once it thaws and dries. It creates a peat-like pile, in most places scores of feet deep, that can burn for extended periods and re-ignite long extinguished surface fires. Near or north of the Arctic Circle, there are almost no land zones not under-girded by a thick permafrost layer. It represents a very large pile of potential fuel for fires as it thaws.

So, unfortunately for Sweden and for other Arctic nations, the fire situation is bound to worsen as warming continues to progress.

Links:

LANCE-MODIS

WeatherOnline

Emergency Crews Ready for Fire to Spread

One Dead, Hundreds Evacuated as Swedish Forest Fire Rages

One Dead as Swedish Fire Rages on

New Heat Record Sizzles and Strikes Sweden

Hat tip to Colorado Bob

Hat tip to John Lonningdal

158 Comments

by robertscribbler on August 5, 2014 • Permalink

Posted in Climate Change

Tagged amplifying feedbacks, Arctic wildfires, burning ground, climate change, environment, extreme weather, global warming, human warming, Near Arctic Wildfires, Permafrost Wildfires, Record Fire, Sala Fire, science, Swedish Fire, weather, wildfires, Worst Fire in 40 years

Posted by robertscribbler on August 5, 2014

https://robertscribbler.wordpress.com/2014/08/05/sala-burning-worst-fire-in-40-years-rages-in-sweltering-sweden/

Large Algae Bloom Still Ongoing As Toledo Officials Declare Water Safe to Drink

(Large algae bloom still visible in Lake Erie satellite shot on August 4, 2014. Image source: LANCE-MODIS.)

Warming, more toxic waters. It’s a problem directly driven by human-caused climate change. And for Toledo, Ohio, this weekend, it’s a reality that was starkly driven home as water services to half a million residents were suddenly shut off. There, in the waters of Lake Erie, a massive bloom of freshwater cyanobacteria pumped out enough poison to put human health at risk and force Ohio officials to declare a state of emergency.

Emerging Threat to Public Health

In Northern Ohio, water safety officials have been nervously testing Lake Erie supplies for many years now. Microbial blooms in western Lake Eerie were on the rise and the worry was that the new blooms may pose a future health threat as both climate change and agricultural run-off intensified.

By 2011, the wettest summer on record and warm waters in Lake Erie helped trigger a major outbreak of cyanobacteria blooms which ultimately resulted in more than 10 billion dollars in damage due to fouled waters, toxic beaches, and losses to the fishing and tourism industries of Lake Erie’s bordering states. Last year, a massive bloom caused some small northern Ohio towns to temporarily cut off water supplies. By last weekend, the entire water supply of Toledo, Ohio was under threat from the microbe-produced toxin called microcystin.

Water Poisoning by Microbes

Microcystin is a potent toxin produced by the small-celled, fresh water cyanobacteria. The substance is unsafe at levels greater than 1 part per billion in drinking water (according to the World Health Organization). Consumption of the toxin results in headaches, nausea and vomiting. Microcystin is directly toxic to the liver with exposure resulting in severe damage. It also results in damage to the digestive system and low levels of exposure have been linked in studies to various forms of abdominal cancer.

Since the toxin is a chemical that has already been produced by bacteria, usual sanitation methods, such as boiling water, are ineffective and may even help to concentrate the poison, making it more potent. So the toxin must be prevented from entering the water supply at the source — which can be difficult if much of the water source is contaminated, as is the case with Lake Erie.

A Threat Driven By Climate Change and Human Activity

As waters warm, they host larger and larger blooms of cyanobacteria harmful to animal life, including humans. The microbes thrive in warm, nutrient-rich water. And under climate change waters both warm even as runoff in certain regions increases due to more frequent bursts of heavy rainfall. This has especially been the case for the central and north central sections of the US, this year, which have suffered extensive and frequent downpours together with record hourly and daily rainfall totals in many areas.

The deluges flush nutrients down streams and into major bodies of water. The water, warmed by human-caused climate change, are already a haven for the cyanobacteria. So the blooms come to dominate surface waters. In addition, the runoff contains added nutrients due to large amounts of phosphorus and other agriculture-based fertilizers. It’s a combination that really gives these dangerous microbes a boost. Under such conditions, the massive resulting blooms can turn the surface lake water into green sludge.

Dead Zones, Anoxic Waters

(Green cyanobacteria in Lake Erie during the large algae bloom of 2013. Image source: University of Michigan.)

Eventually, the cyanobacteria leech the surface waters of nutrients and begin to die out. As they do, they undergo decay which strips oxygen from the waters. Through this process, dangerous, anoxic dead zones radiate from areas previously dominated by large cyanobacteria blooms. The dead zone and toxin producing bacteria often result in large-scale fish kills and the wide-scale fouling of waters that can be so damaging to various industries. However, the dead zones themselves are havens for other toxic microbes — the hydrogen sulfide producing kind.

Water is Declared Safe — Information Still Unavailable to the Public

Today, water safety officials lifted the ban on water use for Toledo, claiming that water was now safe to use and drink after the water system was properly flushed. Officials apparently conducted six tests to confirm water supply safety but have not yet made results public. Personnel with the EPA unofficially stated that microcystin levels were at 3 parts per billion on the day the water was declared unsafe but that water was now safe for residents.

The declaration was met with widespread criticism due to the fact that data on water testing was not made publicly available, reducing confidence in the safety officials’ assertions and causing many residents to question their veracity. State and city water officials say they plan to post the data on their website, but have yet to confirm a time.

Meanwhile, the large cyanobacteria bloom is still ongoing. Experts expect the bloom to peak sometime in mid September and then begin to recede with the advent of fall and cooler weather. With more than a month and a half still to go, Lake Erie water troubles may just be starting to ramp up.

Links:

Toledo Water Ban Lifted, Results Kept Secret

Don’t Drink the Water

LANCE-MODIS

University of Michigan

Spring Rain, Foul Algae in Ailing Lake Eerie

Toxins in Water Lead to State of Emergency

65 Comments

by robertscribbler on August 4, 2014 • Permalink

Posted in Climate Change

Tagged alage bloom, anoxic water, climate change, cyanobacteria, dead zone, global warming, Human caused warming, human warming, hydrogen sulfide, Lake Eerie water, microcystin, Ohio water, state of emergency, Toledo water, toxic water, water emergency, water supply at risk

Posted by robertscribbler on August 4, 2014

https://robertscribbler.wordpress.com/2014/08/04/large-algae-bloom-still-ongoing-as-toledo-officials-declare-water-safe-to-drink/

Arctic Emergency: Top Scientists Explain How Arctic Warming is Wrecking Our Weather and Pushing World To Rapidly Cross Climate Tipping Points

(Must-watch video that includes direct observation and analysis of Arctic tipping points provided by a number of the world’s top climate scientists.)

You don’t want to mess with Arctic warming. It’s an engine of destruction straining to be set loose. A mad burning beast of a thing. One whose fires we are now in the process of stoking to dangerous extremes.

Don’t believe me? Then just listen to top scientists like Dr. Jennifer Francis, Dr. Jason Box, Dr. Jeff Masters, Dr. Natalia Shakhova, Dr. Igor Semiletov, Dr. Peter Wadhams, Dr. James Hansen, Dr. Steve Vavrus, Dr. Ron Prinn, Dr. Kevin Schaefer, Dr. Nikita Zimov, Dr. Jorien Vonk, and a growing list of many, many more (also see above video).

An Arctic that Appears on the Verge of Large Carbon Emissions Adding to an Already Dangerous Human Warming

At issue is the fact that the Arctic is very sensitive to global heat forcing. And any small warming there can rapidly trigger a number of feedbacks that generate more warming for the Arctic and the globe. These feedbacks include but are not limited to:

Snow and sea ice melt resulting in darker surfaces absorbing more sunlight during summer times, a warming global ocean system transporting a high percentage of the added heat north and southward along the ocean bottom and at the surface, rising temperatures in the Arctic slowing and increasing the waviness of the Jet Stream which generates more south to north transfer of temperate and tropical warmth into the Arctic together with a greater export of Arctic cold to the lower latitudes, added greenhouse gasses resulting in much warmer Arctic winters during the times of darkness when greenhouse gas trapping of long wave radiation is most efficient, and an increasing release of carbon from stores sequestered in the Arctic for millions of years, adding to the overall greenhouse gas burden in this, very sensitive, region.

Many of these feedbacks and resulting weather alterations are now in play.

We have observed sea ice reductions of up to 80 percent in total volume losses together with major snow cover reductions since the 1970s. We have observed substantial and growing releases of methane from the Arctic environment in the form of emissions in the region of the submerged permafrost on the East Siberian Arctic Shelf. We have witnessed strange methane emissions emerging in the smoke of major wildfires that have spread over large regions of the Arctic during summer. We’ve seen very troubling emissions in the form of methane eruptions coming from the permafrost and possibly reaching as deep as the methane clathrate layer beneath the permafrost. We’ve seen increasing methane releases from permafrost melt lakes. And we’ve seen increasing CO2 emissions from the dry decay of permafrost and from the direct burning of permafrost and boreal forests by Arctic wildfires.

(Trio of massive Siberian Wildfires raging on August 3, 2014. Burn scar size ranges from 90 to 350+ square miles. Image source: LANCE-MODIS.)

In total, according to scientists in the above video, under an unmitigated and continuously rising heat forcing from human greenhouse gas emissions, the Arctic could release 120 gigatons of carbon or more by the end of this century. Given that humans now dump 13 gigatons of carbon into the atmosphere each year, the Arctic emission would be like adding another decade of current human emissions on top of an already rapidly warming system. Even worse, a significant portion of the Arctic carbon emission could appear in the form of methane — a gas that traps heat far more rapidly than CO2, equaling a heat forcing that is about 60 times CO2 by volume.

A Call From Scientists For Rapid Mitigation

It is important to note that, though strange and terrifying as they may be, current Arctic feedbacks and related carbon emissions are minor when compared to the changes we will unlock if we continue to release greenhouse gasses into the atmosphere. Under BAU, it is possible that we will set in place a regime of Arctic carbon emissions that is equal to 30% or more of the current human greenhouse gas emission. This sizeable release would likely then last for centuries until much of the Arctic carbon store of 1,500+ gigatons locked in permafrost and untold other gigatons locked in clathrates were exhausted. Such releases would result in a mini-runaway that could lock in dangerous hothouse climate conditions for millions of years to come.

Due to the extreme nature of the current situation, some damage is now unavoidable, as we probably hit at least 2-3 C warming long term even if human greenhouse gas emissions suddenly halt. But major damage can still be prevented through direct and coordinated action on the part of nations. For this reason, climate scientists are calling for an 80% or greater reduction in near term human greenhouse gas emissions. A strong direct urging from some of the best scientists in the world and one that we should take very seriously as it is becoming increasingly obvious that the Arctic is now in the process of crossing a number of extremely dangerous tipping points.

I implore you to watch the above video and to do everything in your power to support policies that rapidly draw down the human greenhouse gas emission. Our timeframe window for effective response is rapidly closing and we need swift, direct action now.

Links:

Arctic Emergency — Scientists Speak

The Arctic Methane Monster Exhales

LANCE-MODIS

79 Comments

by robertscribbler on August 4, 2014 • Permalink

Posted in Climate Change

Posted by robertscribbler on August 4, 2014

https://robertscribbler.wordpress.com/2014/08/04/arctic-emergency-top-scientists-explain-how-arctic-warming-is-wrecking-our-weather-and-pushing-world-to-rapidly-cross-climate-tipping-points/

Permafrost Fires Advancing Toward Arctic Ocean Shores

(Smoke from Siberian permafrost fires entrained in wind pattern blowing over the East Siberian and Laptev seas. What can best be described as a synoptic pattern of smoke stretching for more than 2000 miles. For reference, we are looking at the heart of Siberia, the bottom edge of frame touches the Arctic Ocean. Total width of frame is more than 2000 miles. Image source: LANCE-MODIS.)

From the Northwest Territory of Canada to a broad central section of Russian Siberia called Yedoma, the permafrost fires this year have been vicious, powerful and colossal. They have burned deep into the basement soil and permafrost layer, casting out billows of dense, smokey material that, at times, has blanketed a majority of both Siberia and the North American Continent.

In Minnesota, two thousand miles away from the still raging Northwest Territory fires, James Cole, who comments here frequently, noted:

Forest fire smoke here in N.E. Minnesota was off the charts yesterday! I went out to watch the blazing red sun sink below the green hills. This almost invisible red ball brought back an old memory from watching a sun set in San Diego County during a very bad fire out break back when I was home ported with my ship there. These Alberta fires are a huge distance from here, but I can guess at their size by the thick gray haze, the smell and a sunset just like one in an active fire zone. (In confirmation to this eye-witness report, the Minnesota Star Tribune’s Meteorologist Paul Douglas reports Heat, Smoke, and Thunder)

(GOES satellite shot of smoke plume from Arctic fires crossing Minnesota late yesterday evening. Image source: GOES.)

You can see the vast plume of filtering across Minnesota in the above GOES satellite shot.

Fires that Burn Soil

These fires aren’t anything normal. They burn the land as well as the trees. They cast off an inordinately high volume of smoke, such that they are far more visible in the satellite shot than more southerly fires of similar size. And they continue to burn for weeks and weeks — with lands that were lit nearly a month ago still casting off smoke and fire from the same locations.

The quantity of material necessary to keep such fires burning from the same location day in, day out, must be immense and it is becoming increasingly obvious to this observer that woodland as well as the soil and, likely, the thawing permafrost itself have become involved. It is a basement layer that, when fully thawed can be scores of feet deep. A set of peat-like material that, were it to be sequestered, would likely turn into a hundreds foot deep seam of coal over ages of heat and pressure. Instead, it is now being liberated as fuel for fires by human-caused warming.

(Wildfire burning near Laptev Sea on August 1, 2014. The terrain in this region is tundra and tundra lakes, similar to the Yamal region where methane outburst sites where recently discovered. Wildfire is the comet like feature in upper center frame. The shoreline of the Laptev is visible along the lower frame border. Note the steely gray pallor of smoke running south to north [top to bottom] through the image frame. For reference, bottom edge of frame is about 150 miles, fire front is approximately three miles. Image source: LANCE-MODIS.)

On the Canadian side, the fires have primarily remained in the same region, simply continuing to burn from mostly the same sources or spreading only to local areas. But on the Russian side, the fires have leapt from their original cauldrons to ignite in massive blazes along regions both east and west, north and south.

Over recent days, fires have been creeping northward along a ridge line toward the Laptev Sea. Yesterday, a large fire ignited in the treeless tundra just 70 miles south of Arctic Ocean waters. You can see a close up image of this fire in the MODIS shot above.

So we have hard tundra burning just 70 miles south of the Arctic Ocean. No trees here, just an endless expanse of thawing ground.

Links:

LANCE-MODIS

Heat, Smoke, and Thunder

Hat tip to Colorado Bob (First Observation)

Hat tip to James Cole

135 Comments

by robertscribbler on August 2, 2014 • Permalink

Posted in Climate Change

Tagged burning frozen ground, burning ground, climate change, environment, extreme fires, extreme weather, global warming, human warming, Permafrost fires, science, tundra fires, weather, wildfires

Posted by robertscribbler on August 2, 2014

https://robertscribbler.wordpress.com/2014/08/02/permafrost-fires-are-advancing-toward-arctic-ocean-shores/

Smokey Greenland Sees Another Summer of Substantial Melt

(Smoke from Record Northwest Territory Wildfires on August 1, 2014 crossing Baffin Bay and the West Coast of Greenland. Image source: LANCE-MODIS.)

According to our best understanding of paleoclimate, at current greenhouse gas levels of 402 parts per million CO2 and 481 parts per million CO2e, the Greenland Ice Sheet eventually melts out entirely. It’s a level of atmospheric heat forcing we’ve already set in place, a level that keeps rising at a rate of about 2.2 parts per million CO2 and 3 parts per million CO2e each and every year due to our ongoing and reckless carbon emissions. And it’s a level that is already starting to receive substantial additions from destabilizing permafrost carbon together with likely increasing releases from sea bed methane stores.

In this, rather stark, geological, climatological and physical context, we ask the question — is it possible for us to stop a wholesale collapse of Greenland’s ice? And we wonder, how long can the ice sheet last as human greenhouse gas forcings together with ongoing releases from some of Earth’s largest carbon stores continue to rise?

(Extensive melt ponds, Dark Snow on West Face of Greenland Ice Sheet near the Jakobshavn Glacier on July 30, 2014. Extensive darkening of the ice sheet surface, especially near the ice sheet edge, is resulting in more solar energy being absorbed by the ice sheet. Recent studies have shown that edge melt results in rapid destabilization and speeds glacier flows due to the fact that edge ice traditionally acts like a wall holding the more central and denser ice pack back. Notably, the Jakobshavn is currently Greenland’s fastest glacier. Image source: LANCE-MODIS.)

For ultimately, our ability or inability to rapidly mitigate and then draw down extreme levels of atmospheric greenhouse gasses will provide an answer these key questions. And whether we realize it or not, we are already in a race against a growing Earth Systems response that may eventually overwhelm our efforts, if we continue to delay for too long.

But there’s a lot of inertia in the ice. It represents aeons and aeons of ancient cold locked in great, mountain-high blocks. And its eventual release, which is likely to continue to ramp higher and higher this century, is bound to result in a temporary and weather-wrecking outrush of that cold causing dramatic swings in temperature and climate states to be the rule of the day for Greenland as time moves forward.

(Large melt ponds, extensive surface water over Zachariae Glacier in Northeast Greenland on July 25 of 2014. For reference, the larger melt ponds in this image range from 1 to 4 kilometers at their widest points. The Zachariae Glacier sits atop a deep, below sea level channel that runs all the way to a massive below sea level basin at the center of the Greenland Ice Sheet. This Glacier is now one of more than 13 massive ice blocks that are moving at ever increasing velocity toward the ocean. Image source: LANCE-MODIS)

So we should not expect any melt to follow a neat or smooth trend, but to instead include large variations along an incline toward greater losses. In short, we’ve likely locked in centuries of great instability and variability during which the great ice sheets are softened up and eventually wither away.

Another Year of Strong Greenland Melt

In the context of the past two decades, the 2014 summer melt has trended well above the 30 year average in both melt extent and surface mass losses. Though somewhat behind melt during 2012, 2014 may rank in the top 10 melt years with continued strong melt in various regions and an overall substantial loss of ice mass.

Surface melt extent appears to be overall above 2013 values, ranging well above the 1981-2010 average, but significantly below extents seen during the record 2012 melt:

(Last three years of surface melt extent with the most current melt graph for the 2014 melt season at the top and the preceeding years 2013 and 2012 following chronologically. Dotted blue line indicates 1981-2010 average. Top three surface melt years in the record are 2012, 2010 and 2007, respectively. Image source: NSIDC.)

Overall, 2014 showed four melt spikes above 35% melt coverage with three spikes nearing the 40% melt extent coverage mark. By contrast, 2013 only showed two such melt spikes, though the later spike was slightly more intense than those seen during 2014. 2012’s 150 year melt, on the other hand, showed melt extents ranging above 40 percent from mid June to early August with two spikes above 60% and one spike above 80%.

Losses of mass at the surface also showed above average melt trends, but with net melt still below both 2013 and 2012:

(Greenland surface mass balance trend for 2014 [blue line] compared to mean for 1990 to 2011 [gray line] and record melt year of 2012 [red line]. Image source: DMI.)

2012 was a strong record year and, on average, we’d expect to see the record jump back to lower levels after such a severe event. However, there’s little to indicate that either 2013 or 2014 have bucked the trend of ongoing and increasing surface melt over Greenland. To the contrary, that trend is now well established with yearly surface mass losses now taking place during all but one of the last 13 years. And there is every indication that 2014 will be a continuation of this trend.

Basal, Interior Melt Not Taken Into Account in the Surface Measure

While surface measures are a good measure of melt on the top of the ice sheet, it doesn’t give much of an idea of what’s happening below the first few feet. There, during recent years, sub surface melt lakes have been forming even as warming ocean waters have eaten away at the ice sheet’s base. And since more than 90% of human-caused warming ends up in the world’s oceans even as many of Greenland’s glaciers plunge hundreds of feet into these warming waters, one might expect an additional significant melt to be coming from the ocean-contacting ice faces.

We can see an indication of the severe combined impact of basal, interior and surface melt in the GRACE mass measurements of the Greenland Ice Sheet since 2002. A record that finds a precipitous and increasing rate of decline: