Carbon Sequestration in Permafrost (right) by "Cryoturbination" from Charles Tarnocai

Permafrost (permanently frozen ground) has not been on the radar screen very often in the national conversation about global climate change (GCC). When I started reading about the science underlying GCC a few years ago, I came across brief, scattered descriptions about permafrost; my tendency then was to skip over the pages describing the problem, which wasn’t difficult, as there were few in number and fewer still were the number of scientists who considered the issue to be an emergency situation or a major component of GCC. Indeed, until recently, it was widely assumed that the warming of the permafrost would stimulate new plant growth, such that the net impact would be a sink for carbon, not a source and hence, a protective mechanism for absorbing the carbon hiccups of GCC.  The 2007 report from the Intergovernmental Panel on Climate Change (IPCC; Fourth Report: working group I: The Physical Science Basis, p 340) stated “The maximum extent of seasonally frozen ground has decreased by about 7% in the NH from 1901 to 2002, with a decrease in spring of up to 15%. Its maximum depth has decreased about 0.3 m in Eurasia since the mid-20th century. In addition, maximum seasonal thaw depth over permafrost has increased about 0.2 m in the Russian Arctic from 1956 to 1990. Onset dates of thaw in spring and freeze in autumn advanced five to seven days in Eurasia from 1988 to 2002, leading to an earlier growing season but no change in duration:” there was little hint from the report that permafrost was a serious, hidden threat anymore than that attributed to greenhouse gas emissions in general. Thus, until very recently, any special reference to permafrost as a problem seemed to be traveling under the radar screen.  Observers and scientists alike have all been rightly focused on the more significant issue of coal-burning power plants, the number one polluter and green house gas emitter and the single biggest danger to our planetary future.  But in the last few years, reports started to appear which suggested that permafrost could no longer be ignored in calculations and models about climate change, because more extensive measurements suggested that it is potentially a major source of greenhouse gases, including carbon dioxide and methane and that permafrost may be a storage source for huge quantities of carbon, in the form of plant material that got buried long ago in the layers of permafrost–a source that is now in the process of being “liberated” through exposure to planetary warming. One of the revelations that changed our views on this topic came from recent studies that measured permafrost carbon content at soil depths deeper than 100 cm, revealing that for some permafrost regions, up to 2/3 of the carbon deposits in the soil were deeper than the 100 cm limit used in many previous studies. More measurements and additional studies of this problem are acutely needed to evaluate the significance of this newly revealed, potentially dangerous source of carbon. It could form another positive feedback mechanism for GCC, at a time when we have a hard time dealing with coal-burning power plants.

Recently, Justin Gillis wrote an article in the New York timeswhich provided  an excellent, fairly detailed front page story on permafrost, together with information about ongoing studies in Alaska, Canada and other parts of the Northern Hemisphere. These studies are alarming because they indicate that the Northern Hemisphere could become a source of carbon rather than a sink (indeed, it may be there already, though we don’t know this with certainty), created by warming conditions which stimulate bacterial breakdown of dormant sources of carbon.

Permafrost of Circumpolar Region (from Charles Tarnocai)

When oxygen is plentiful, as in the bacterial breakdown of plant material in air,  the stored permafrost vegetation is generally broken down into carbon dioxide, but when the region is oxygen-poor, usually when it is submerged in water, bacteria can generate methane gas from this carbon source, which forms bubbles in lakes and ponds as it rises to the surface and ultimately into the atmosphere. Methane gas has been reported in locations in Alaska: once in the atmosphere, it is 33 times more potent than carbon dioxide as a greenhouse gas when measured over a 100 year period. It is far better to burn it off into carbon dioxide than let it reach the atmosphere as methane, even though its half life in the atmosphere is less than that of carbon dioxide.  Recent estimates of the amount of carbon that currently exists in the permafrost is about twice the amount that’s in the atmosphere already and could eventually constitute up to 35 percent of today’s annual human emissions. The danger of this source, is that once the process of degradation begins, though it may take 100 years or more to biodegrade its way through the available sources of carbon, it will be impossible to stop. Now is the time to alertly invest in research to evaluate with more certainty the true impact of this new addition to the GCC orchestra. Is it a single instrument or a new section of the band!

The first question of interest of course is what is permafrost? A dictionary definition is that of a subsurface material that remains below zero degrees Centigrade (32 degrees Fahrenheit) for a least two consecutive years. More practically, it’s the area in the Northern Hemisphere that is largely frozen, but some regions of the permafrost have a surface layer which has seasonal plant growth. The permafrost areas, like the rest of the planet, are beginning to warm and there is new cause for concern about the consequences. The earth is heating up more rapidly in the Northern Hemisphere than any other region of the planet. As the reflective glaciers (albedo effect) retreat, the area exposes itself as a less reflective environment, in the form of water and land, and more of the sun ‘s energy is absorbed and accelerates the warming trend; this constitutes a positive feedback system which further accelerates the loss of snow and ice in the region–>more heat–>less ice–>more heat absorbed–>more melting of ice–>where will it all end?  Thus, GCC is already generating one positive feedback system in the form of the albedo effect, especially evident in the Northern Hemisphere. Though permafrost also exists within the Antarctic region, it has been less well studied. As glaciers and ice pack formation retreat, more  permafrost gets exposed, but the warming of the exposed permafrost appears to be adding another source of carbon that we should seriously worry about. This issue has become of interest lately because studies have shown that permafrost is a rich source of sequestered carbon that has been trapped in the soil for hundreds to thousands of years.

It is counter-intuitive to imagine that permafrost might be a type of soil that holds rich deposits of carbon. One’s first impression is that soils exposed to frozen conditions will  be poor in nutritional value and contain less vegetation than that of more temperate soils. But extensive measurements from many different regions of the permafrost indicate that overall, the permafrost can contain higher levels of carbon than more temperate soils and that deep down in the soil, rich carbon deposits can exist.  The first figure illustrates how the permafrost becomes increasingly carbonized by a process referred to as  “crytoturbination,” (right figure) as if a giant Hobart machine circulated plant deposits  (and a few dead animals) from near the surface deeper into the soil, such that very deep layers contain high levels of carbon when compared to soils from more temperate regions (left figure). This process of permafrost carbonation has been going on for thousands of years but it is still surprising that they contain such high levels and deep layers of carbon deposits.  The second figure shows, in a color-coded map, the areas of permafrost that presently exist in the Northern Circumpolar regions, based on carbon soil content derived from borehole analysis.  If the permafrost source of carbon dioxide/methane gains momentum, it will become another positive feedback mechanism with sufficient potential power to make a big contribution to global warming. Whereas climatologists and plant biologists once considered the exposure of the permafrost to have a positive influence through carbon sequestration, with the new higher estimates of the permafrost carbon content, the process may well have started and whatever benefit we might have derived may be turning into an additional problem for the future of the planet. When you look at it in the following way, you can appreciate the problem: for hundreds of millions of years, the earth accumulated carbon in the form of coal, oil and natural gas. Through man’s ingenious nature, a portion of this carbon  has been put into the atmosphere as carbon dioxide and other greenhouse gases, but on a time scale of a few centuries. Since we now understand that the planet is in a delicate balance of carbon dioxide and other greenhouse gases, with the Earth’s ice and snow content, shouldn’t it alarm all of us when we imagine that our actions cannot do anything other than change our planetary weather? What new philosophical form of inquiry is required for man to properly gaze into the future that he has created for himself? Scientific inquiry so far doesn’t seem to work.

RFM

Mountaintop removal eliminates the mountain and fills the valley below

I have been waiting for the documentary “The Last Mountain” to be released to my  Netflix streaming queue for sometime and then it suddenly showed up, so I watched it a few nights ago. Directed by Bill Haney, it tells the gripping story of the fight to keep Coal River Mountain West Virginia from being destroyed by the Massey Energy  Company.  The residents of Coal River Valley have been threatened for years by mountain top removal in a region of the state that has breath-taking, tree-covered hills and valleys; this region however has been progressively destroyed by coal mining through the technique of  mountaintop removal, based on massive, mechanized  machinery and explosives. Although Robert Kennedy played a major role as an activist and adviser in the documentary, and clearly adds a sense of national urgency to the issues addressed, the story is also about how local residents of Coal River Valley got together and formed an activist resistance to the Massey Coal Company’s plan to remove Coal River Mountain, a mountain that serves as a watershed for residents of the valleys below.  Many other mountains in the region have already been destroyed by coal mining, such that Coal River Mountain was and is the “last mountain standing”  of significance for the region. The removal of this mountain will destroy the water system of people living downstream and increase the severity of flooding, two well-known, obligatory features of mountaintop removal.  Many residents believe that Massey Coal wants to depopulate the Coal River Valley and eliminate downstream community occupancy, to give them more space for strip-mining. It is a very ugly process.

While the Obama administration has been more sensitive to the destruction of the water supply by mountaintop coal mining and violations of environmental laws, the original permits to remove Coal River Mountain were given during the Bush administration and Massey Coal has proceeded to execute its march towards mountain destruction. However, in a somewhat duplicitous manner, the Obama administration continues to issue permits for more mountaintop removal in the region. An interesting feature of this controversy was revealed in the documentary based on studies  that raise the feasibility of putting windmill generators across the top of Coal River Mountain. Those who have studied this suggest that wind power generation would produce more jobs and give the neighboring communities more long-term income through power generation and improvements in the tax base, when compared to the resources generated by the Massey mountaintop removal project,  which  of course will end at some time in the future. The demonstrations, sit-ins and tree sitting by environmentalists and residents are greeted with hostility by the miners who still have jobs working for Massey Coal. Oddly enough, I didn’t see many of the mountain top removal defenders (50 percent of our electricity comes from coal) argue that the future of the industry depends on the development of new clean coal technologies, none of which were on display or even discussed. Many coal-based power plants claim that they are ready for “carbon-capture” technology when it becomes available. But that possibility is very remote because once in service, the public will not tolerate retrofitting for carbon-capture, even if the technique becomes feasible, as it would add enormous costs to existing energy production. If carbon-capture or some similar clean coal technology ever comes along, it is likely to increase the cost of coal-based power plants to a prohibitively high level. Coal is currently the worst source of air pollution and the long list of its pollution offenses  goes beyond carbon dioxide and includes such things as mercury contamination, which accounts for warnings we get about eating fish too often because of their high mercury content. Mercury is toxic to the brain and impacts on brain development. It might be that Republicans have been eating too much fish.

Robert Kennedy is articulate in pointing out that the impact of Massey Coal has been to increase the poverty of the region, first by destroying the unions in the 1980s (companies close mines, send unionized workers home and then reopened the mines with non-union miners, complete with reduced salary and benefits) and second, by reducing the labor force through automation and modernization of equipment and techniques: strip mining is replacing deep hole mining, with a reduction in the labor force needed.  But if the true cost of coal mining was reflected in the price of coal, including the serious health care costs and safety issues, the cost of this form of energy would be prohibitively expensive. We are not just trapped by the history of the region as a long-standing coal-mining center, but also by the powerful lobbying interests of coal mining and transportation (trains) that thrive on their operations in West Virginia and other coal-intensive states.  One can add that Wall Street has billions invested in these companies because they are profitable and seem to be free from serious regulatory control. Add to that formula the corrupt organization of the state’s environmental protection agency, which allows coal companies to violate water and air quality standards without fines, and you have an updated version of “Love Canal.”

The environmental damage does not stop with a disappearing mountain top. The heavy coal mining leads to toxic waste sites in the mountain regions above the valleys, created from the water used to wash the coal before it is shipped and these sites leak and pollute the water supply downstream, carrying highly toxic material.  Several websites have been put up to monitor the mining operation, but the state and Federal Government seem to collude as obstacles for better environmental regulation. The trouble is that while wind energy might be successful for the future of local inhabitants, how will the energy needs of others be met who receive the coal over long distance railroad shipments? You have to decommission these coal plants one at a time, when you have a suitable alternative and until that can be achieved, the forces promoting mountaintop removal will keep going with few obstacles in sight that can stop them. If you had only two solutions to our energy needs, nuclear power and coal mining, the preferred choice would be obvious.  The solution at hand is to build a new, modern transcontinental power grid that collects electricity from all forms of power generated in different ways and distribute that power efficiently to homes and businesses. This is an infrastructure issue. Yes, it would be better to replace coal-fired power plants with natural gas in the short-run, and it seems obvious that the wind turbine option for the people of Coal River Valley makes far more economic and environmental sense, but how to resolve the challenges of implementing this new technology in place of coal is something we can only achieve through the force of a national government, not a state government, which, in the case of West Virginia seems hopelessly corrupt and entirely devoted to the private, rather than the public interest.

RFM

• From Engelhardt’s summary of the poll: “In the latest NBC News/Wall Street Journal poll in which 61% of Americans interviewed considered “things in the nation” to be “on the wrong track,” 66% did “not feel confident that life for our children’s generation will be better than it has been for us.” (Seven percent were “not sure,” and only 27% “felt confident.”)  But here was the polling question you’re least likely to see discussed in your local newspaper or by Washington-based pundits: “Do you think America is in a state of decline, or do you feel that this is not the case?” Sixty-five percent of respondents chose as their answer: “in a state of decline.”

These kinds of numbers in the 50, 60 and 70% for questions asked about our county’s  future, have been present in polling data for many years and stretch back at least as far as the early GW Bush years. Engelhardt’s point is that the country cannot sustain itself with this kind of public opposition and Chalmers Johnson’s point would be that we can’t financially afford it. According to Johnson, we should look forward to following the British lead, as they gave up their empire (turned things over to us and thought we would be the new Romans and they would be our Greeks) and more or less created a soft landing for themselves. Everyone abroad realizes we are sick at home and the polling data now consistently  shows that the majority of us feel similarly, we just lack the national leadership to provide a new pathway, though I must confess, the soft landing idea gets harder and harder to imagine. The Republicans want to destroy our social fabric so that we will be better at fighting new wars (Republicans haven’t forgotten Iran, even though the Arab Spring has momentarily displaced their attention), while the Democrats want to keep fighting the wars we have but also keep a modest level of support for our citizens. Perhaps this will end, or should I say begin, with the mayors of each city, who are learning the hard way, as they are/will be the first responders, that they must begin to organize for the coming challenges of global warming. Katrina was the starting point for many cities of the world and already in America, Seattle, Chicago and New York have initiated plans to deal with the coming crisis, in a serious planning-ahead manner. It will take a nation of wise people and a wise government, not the fools we have now that pose as leaders, to understand the gravity of what we have in front of us during this century of dealing with a problem we created for ourselves. For more information on what cities in America are doing, you can find an illustration from a King County Washington meeting whose website is here.

RFM

From National Geographic

Week before last, temperatures in International Falls Minnesota reached 46 degrees below zero and that was the air temperature, without the windchill.  An Arctic blast of cold air broke free from its northern moorings and spread rapidly into Minnesota and nearby states. At those temperatures, breathing through your nose is a challenge, as ice crystals form within the nasal cavity and you quickly find it best to breathe through a scarf or some other device, like a face mask that quickly gets warmed by your breath. But in time, even these filters develop ice crystals and breathing through them can become more labored. Most Minnesotans know what to do under these conditions–they go outside only when they have to and spend more time indoors. Air hockey anyone?

All humans share a short nasal cavity; sufficient time has not elapsed to see if evolutionary adaptations might arise in Minnesotans, such as a longer nasal cavity that would serve to mitigate nasal ice crystal formation.  In response to this dry arctic air that crept into Minnesota week before last, I found myself shuttered inside, thinking about polar bears and the special adaptive features they have developed to make it through winters that actually don’t get a lot colder than what we observed recently in Minnesota (January temperatures in the Arctic get to about 58 degrees below zero, so we truly got a blast of real Arctic air), though they stay that way much longer. Polar bears are insulated by about 4 inches of blubber, lying immediately underneath their skin. They also have a larger head and a longer nasal cavity when compared to Brown bears. The longer nasal cavity is probably better at warming the cold air when breathing through the nostrils and polar bears have an olfactory apparatus that can detect minute odor levels miles away.  You have heard of the infrared cameras that one uses to gauge heat loss and identify areas in your home that are losing heat through poor insulation. Well, the polar bear is so well insulated that they are virtually invisible to an infrared camera. They are one of the most efficient animals for heat retention we know of.

Polar bears are the largest land-dwelling carnivores, with males reaching up to 1500 pounds; the largest polar bear on record weighed 2210 pounds. Yet, while they are the dominant predator of the Arctic circle, they are slated for extinction perhaps within the next 50 years. A guaranteed disappearance of a predator at the top of the food chain should bother the Hell of out of all of us, because we are predators at the top the biggest and widest food chain in the world. So if polar bears can disappear with the speed of essentially dimming a switch, why can’t this happen to us just as easily? Well of course, for one thing there are more of us–humans number more than 6 billion and by the middle of this century we are scheduled to reach 9 billion, while polar bears, restricted to the Arctic circle region, number about 20,000 to 25,000; their numbers are already declining while human numbers continue to grow. Then too, we occupy a different niche than polar bears and occupy more temperate zones and insure ourselves an adequate supply of food through agriculture and animal cultivation; most of us don’t have to hunt to eat. In contrast, the polar bears have an established a food chain niche that is critically dependent on the retention of sea ice for foraging. This projected elimination of the species is not because of threats from hunting or factors other than the expected conditions that will be brought about by global climate change and the early seasonal loss of sea ice that polar bears depend on for hunting their primary prey–seals. Persistent sea ice is essential for polar bears to hunt. Normally, the sea ice doesn’t break up until September, at which time polar bears are forced by circumstances to move off the sea ice onto land. In the fall, a pregnant female creates a hibernation den within the snow and enters into a state of semi-hibernation during which time, her cubs are born (2-4) and they feed exclusively on mother’s milk for three to four and a half months.

When a mother polar bear comes out of her winter hibernation, with cubs in tow, she will have lost several hundred of pounds of weight, as she had fattened up before hibernation in order to nurse her cubs that are born during the hibernation period. After the birth of the cubs, but still during the hibernation period, mother’s milk is the exclusive source of nourishment used to feed the cubs. So when she emerges with her cubs in the spring, they are old enough to have some mobility and her first need is to get food to nourish herself and keep producing mile to feed her cubs. It’s as if the termination of the hibernation period brings on a food crisis. Normally, when polar bears emerge from hibernation,  the arctic sea ice is still intact, which is far more conducive for catching seals, the main diet of polar bears.  Even when the sea ice begins to break up in the summer, large chunks of ice allow polar bears to hunt on the ice when seals break through their holes to breathe. But if the sea ice becomes too thin and breaks up into smaller chunks or disappears altogether, seals are no longer constrained to breathe through the ice and polar bears can no longer hunt efficiently.  There are reports of polar bears mating with grizzlies, the result of which is to produce hybrids that are less efficient as swimmers and at greater risk when marginal sea ice conditions appear.  So, the earlier that the sea ice melts or breaks up, the greater is the risk for polar bears. Reports of polar bear drownings have already appeared, presumably as a result of too much ice melting and making swimming distances between ice flows too great.

The story behind the threat of polar bear extinction began  in 2007 and was provided by a report from the U.S. Geological Survey (USGS), indicating that within 50 years, the shrinking sea ice will leave only a small remnant of polar bear populations on the islands of the Canadian Arctic; those along the Alaskan and Russian coasts, which are the populations most often studied, will all be gone. These reports were provided to Congress; a year later, the polar bear was listed as a threatened species under the Endangered Species Act by the United States Department of the Interior.

The report of 2007 made the news in the Anchorage Daily News (article written by  Tom Kizzia, September 8, 2007) and, until recently, nothing had changed to alter these grim projections, based on scientific expectations derived from climate change modeling studies, using what is known as a general circulation model (GCM). Those studies indicated that sufficient carbon dioxide had already accumulated such that a “tipping point” had been reached and nothing could be done to reverse the fate of sea ice in the Arctic as it was shrinking at a much faster rate than earlier models had predicted. In a relatively short time, it was predicted that sea ice would disappear and get broken up earlier and earlier in the year, putting more pressure on polar bears. In these studies, the tipping point concept was based on the idea that ice normally provides a reflection of sunlight and thus returns energy from the surface of the earth, preventing some solar radiation from warming the oceans and land surfaces. But as ice surfaces diminish in area, earth and water surfaces get more sunlight exposure. This phenomenon is referred to as the “albedo” effect; it constitutes a positive feedback from melting ice–the more ice that melts, the more sunlight hits the earth and water surfaces and in turn melts more ice. The ice melt of 2007 was especially worrisome. Thus, USGA report of 2007 suggested that this positive feedback system, had already reached a point that future sea ice would melt, perhaps very rapidly, and eliminate most of the polar bear population within 50 years. According to that report a tipping point had already been reached so that no matter what future reductions in carbon emissions might be achieved, the polar bears were doomed.

The 2007 USGA report was not seriously challenged until a recent article appeared in Nature in December 2010 (volume 468, p. 955-958). This report re-examined the idea of a tipping point for sea ice and the future of polar bears. However, in these new modeling studies, the issue was examined based on the assumption that some reduction in greenhouse gases would take place in the future. Using a similar model to that used to project a poor outcome for polar bears, the paper by Amstrup et al accepted different levels of reductions in green house gases as a basis for generating different models that simulated whether or not a normal  sea ice pattern could be retained under these conditions of reduced carbon dioxide emissions. Five different models of reduced carbon emissions were used, including one proposal to keep the carbon dioxide levels the same as those of the year 2000 (Y2K model); other models used different scenarios for reducing the level of carbon emissions. First, this study confirmed the 2007 USGA results, strongly supporting the idea that if nothing is done, most polar bears are either doomed or will have to dramatically change their hunting habits (and are probably poorly equipped to do so).  However, with reductions in atmospheric carbon dioxide, the Amstrup modeling studies showed that the sea ice could be retained sufficiently to give safe harbor for polar bears. They did not find a “tipping point” that doomed the polar bears and for that reason alone, the study was very encouraging and carried an obviously reduced doomsday prediction. The December 2010 study is exemplary for several reasons. In addition to giving new hope to the polar bears if humans begin to reduce carbon emissions, the Amstrup paper also demonstrates the power of the internet. In a high impact journal such as Nature, papers are given a relatively small amount of space for a single paper–typically three pages or less for an article. But, because information can be stored on the internet, referred to and linked/downloaded while reading the on-line paper, the so called supplemental material can increase the length of the paper by several fold. The polar bear paper referred to was less than three double-sided printed pages in the magazine, but the supplemental material, which contained additional information on the models used, including more color figures and references, was 26 double-sided pages. A second mode of expansion can be seen in the reference section, where if you click on the section, it expands so that each reference has a “show content” link that takes you to an expanded explanation of the reference that has been quoted, what the reference says and why it may or may not be a source of valid observations and conclusions. In short, the Nature paper just described shows why there are no short papers anymore, particularly on a complex subject and within a high impact journal. Now we have three different levels of readership. First, there’s the casual reader, trying to get the general concept of the article, then there’s the serious reader who evaluates the main figures and can talk somewhat intelligently about the article and then there are the global climate change people and serious polar bear biologists who scour through the main article, all the figures, the material in the supplemental section and the expansion of the references, a sort of “why did I use this reference” section. The take home message of all this complexity is that first and foremost, the best and worst case for the future of our polar bears are both based on models–that is all we have to go on. But, increasingly, the models are fed by better and better data and such models are trying to reach down and resolve time limits not achieved in previous work. Instead of centuries long outcomes, models are getting down to half-century and even decades of time. We will see some of these changes within a single human lifetime. But, a single year of weather means nothing–the variables making up our annual weather patterns are too great to project our future from the weather that unfolds in a single season, tempting though it may be to project them forward in time. I seriously doubt that humans have the capacity to remember and log the long-term weather patterns, such that we can become reliable reporters of weather patterns that change over decades: most of us can’t really remember with certainty the weather events of last year. We remember really tough winters and hot summers and there is a sense that we are moving towards warmer conditions, but these transitions are not smooth hyperbolic curves we ride on and that’s why, as much as we like to talk about the weather, we rely on measurements to reveal the true weather trends. Those measurements show, that as the carbon dioxide emissions have increased, the air temperatures are rising, our oceans are warming and expanding, the ice masses are receding and species are threatened. Globally, 25% of mammalian species are threatened with extinction. Habitat loss is the main reason and for the polar bears, the threat of loss of sea ice is also a case of habitat loss, even though it is first and foremost attributed to global climate change and humanoid activity.

RFM

California said "NO"

During most of the GW Bush years, the response of our government to the threat of global climate change was largely one of denial. To aid in this posture of deception, the Republican-controlled Congress used author Michael Crighton and more recently George Will as their poster children to promote false, delusional stories against the overwhelming evidence that man is heating up the planet, with potentially dire consequences for our long-term and perhaps even our short-term future. I have commented many times on the anti-science policies of the Bush administration and the Republican Party’s undeclared, but very real war on science.  While the GW Bush years are now behind us, we are faced with Deja vu as the Republican Party is about to take power once again in the House of Representatives; as a result, we will see more anti-science propaganda and obfuscation in the place of clarity on an issue that should by now be part of our American reflexes and known by the youngest members of our culture. Knowledge of the science of global climate change and its implications for our future should be taught in every school at every level and be among the most common elements of discussion in our society–not just when we are about to lose the Polar bears. We live on a small planet in which everything is in a dynamic state of change, impacted by multiple factors, not all of which are currently understood. But with atmospheric carbon dioxide reaching 380 ppm, we are approaching the levels at which the ice trapped in the Arctic, Antarctic and Greenland ice masses could melt, giving rise to an elevation of sea levels of more than 200 feet. But Republicans will once again try to make sure that discussion of global climate change does not become part of our national dialog.  We can rest assured that the Republican Party, while out of House control for four years, has not repented from its past sins of denying science and the objectivity required for its successful implementation.  Because of this, we can expect to see more anti-science behavior coming out of the House and more anti-science propaganda coming through the air waves, courtesy of Faux News.  The House is planning hearings and investigations which are intended to cloud the issue and the science of global climate change  rather than add some desperately needed clarity to this very complex, but unavoidable problem lying in our present trajectory.

In the desert years of the Bush administration, environmentalists concerned with anthropogenic greenhouse-gas emissions, took up the issue with state governments and largely abandoned efforts directed at the Federal level. Four years ago, through the state Assembly Bill 32, the Global Warming Solutions Act of 2006, Californians decided to cultivate an environment that would benefit all human and other biological organisms. This California law was one of the most important state laws ever passed to protect the environment and it set a bold new trajectory for reducing greenhouse-gas emissions by 25% of the 1990 levels by the year 2020. But in the last election, this law was directly challenged by the oil and gas industries who poured huge sums of money into California to force rejection of the emissions law by voting for proposition 23.  So, despite the distractions provided by the Tea Party, the 2010 election in California included the boldest attempt by any American entity to reduce greenhouse-gas emissions and corporate America tried to make sure the environmental mechanisms established by the law would never see the light of day.  But, in the election of November 2010, 61% of Californians voted against proposition 23 and preserved the state’s strong greenhouse-gas emissions standards that will soon begin to take hold.  The California Air Resources Board is in the process of implementing the law and introducing a cap-and-trade system that will allow industries to decide where to make reductions in emissions. To me, cap-and-trade is not really a solution to greenhouse-gas emissions, but we have to start somewhere. Since California, with about 12% of the U.S. population, generally leads the nation in environmental laws, we can expect that other state governments will follow suit and that eventually the Federal Government, regardless of its political composition, will also have to bend to the growing public recognition of the problem. In fact, at the present time, seven other western states and four Canadian provinces have joined in the Western Climate Initiative and six other states and one Canadian province have formed the Midwestern Greenhouse-Gas Reduction Accord. These two programs promise to reduce greenhouse-gas emissions by 15% and 20% respectively. In addition, ten northeastern states have joined in the Regional Greenhouse Gas Initiative and committed themselves to a reduction of current emission levels by 10% in 2018. Thus, a total of 23 states and five Canadian provinces have recognized the problem of greenhouse-gas emissions and are doing something about it. Estimates are that the region covered by these states includes about half the US population and three quarters of the Canadian population.

The Obama administration is planning to introduce Federal greenhouse-gas emission regulations next year that will result in a 28% reduction from the 2008 levels by 2020. Unfortunately, with the House in control of the Republicans and the Senate unlikely to overcome a filibuster on greenhouse-gas legislation, Obama will have to use the power of the Federal purse in order to achieve such reductions. But we shouldn’t dismiss these efforts, particularly since the EPA is now in charge of CO2 regulation and the President’s control of the military budget can also be used to bring greenhouse-gas technologies on line. The success of this strategy will rely on being mostly clever but strong-willed action.

We must salute the state of California that sometimes does things in a crazy way, like electing Arnold Schwarzenegger, but with respect to proposition 23, they got it right.  We now face the intriguing  possibility that beating back proposition 23, may begin a small avalanche leading to an improved intellectual climate for more action on global climate change. The rejection of proposition 23 was not merely a victory for environmentalists; it showed that giant multinational corporations can sometimes be beaten back and lose on important issues that will affect our future existence and health. We have a President who appears primed for action on this topic and may, if carried out with sufficient cleverness, actually achieve major results on reductions of greenhouse-gas emissions. At least we have new hope that something might get done. Indeed we can further speculate that if done properly, it could be the beginning of the new economy that we desperately need to pull us out of the most serious recession since the Great Depression. Although not anticipated, the single bright spot produced by California’s action on proposition 23, could be the beginning of a fascinating year in politics. We should all perk up and stay tuned. Perhaps the environment will have a good year.

[Data for this posting was taken from a Nature editorial "States or the Union," , 468, p. 133, 2010]

RFM

So, if we wanted to conduct an experiment on the environmental impact of a major oil spill–now is our chance. But BP is attempting to silence the scientists who are examining the impact of the spill, as I wrote earlier. Whatever we have done to the ecology of the region will not be known for decades and many issues will probably never be fully understood. Right now, thanks to the use of Corexit, there is a layer of oil on the bottom of the Gulf, the magnitude and distribution of which is presently unknown: I seriously doubt there is any method that can measure it.  But that is the area where many fish breed (including some species of blue fin tuna), so the future of fish that spawn in the gulf is unknown and since the number of fish caught is rapidly diminishing world wide (virtually all Atlantic salmon that we buy in the store is farmed fish), it will be hard to pin any change in fish numbers on the Gulf oil spill of 2010.  Not entirely unrelated is how we destroyed the cod fishing in the North Atlantic: once fishing trawlers came along that could reach with their nets down to the bottom of the ocean, the cod started to disappear because that’s where the big cod go down to breed and where the newly hatched cod stay to grow. So, while cod was once considered to be an inexhaustible source of seafood, and built the early economy of New England, the major cod fisheries have been closed since the early 1990s. Will oil on the bottom of the gulf achieve what the trawlers did to the cod fishing industry in the Atlantic?   Williams’ article also reveals that many residents of the Gulf region have been tested for contamination and show up with elevated levels of benzene and cadmium. So, we haven’t just intoxicated the wild life of the region, we must also think about the long-term impact on humans. Williams adds another point that should spark instantaneous sobriety: the five million barrels of oil spilled into the gulf would have provided the United States with about four hours of our daily oil diet. It is government collusion with the oil industry that produces this kind of outcome, though many feel that BP is an outlier when it comes to safety issues. The PBS program FRONTLINE did a major documentary on the safety record of BP and its convoluted history. You can watch it here. I have also commented on BP and the Gulf oil spill in articles here and here.

Who can lead us out of this toxic quagmire of excessive, American-style capitalism that puts humans below profits and stock values over human safety and protection of the environment? It is as if our frontal lobes, the region of our brain where we stand the best chance of evoking some longitudinal thinking and perhaps realizing that we are on an unsustainable path–that region of the brain has died of the atrophy of disuse, especially by our government and its collusion with international corporate objectives. But, as the saying goes, “we have met the enemy and it is us.” If we demanded a change and forced refocus of our culture on a sustainable path, compatible with the environment and the other animals that live within it, we could change things beginning now. We are too late to avoid impact from global climate change and we are too late to avoid a rise in sea levels, but we are not too late to save the planet from an insurmountable catastrophe that lies in our path if we do nothing. If we should lose the Greenland, Antarctic and Arctic ice, the ocean levels will rise by about 70 meters, Florida will be completely underwater and the Mississippi River will drain into the Gulf at Tennessee. While the earlier projections did not foresee this kind of catastrophe during the 21st century, the ice is melting faster than we thought, by mechanisms we cannot yet model, nor do we understand. So, while it is still true that we control our own destiny, that is probably only true today for a subset of the global population. It doesn’t mean we can’t improve, but we are already late.

RFM

A recent  NYT article describes a possible major breakthrough in the disovering the etiology of CCD.  The Times article was based on an extensive study described in the on-line science journal Plos One (public access is available). The combined force of academic researchers and a group of army researchers studying proteomics, extensively analyzed  and compared stable, unstable and collapsed bee colonies. They used a very powerful method of mass-spectrometry based proteomics. With this approach, instead of looking for genomic evidence, they were able to analyze thousands of different proteins and infer back to identify the organisms that generated them. The field of proteomics has exploded in the last decade and is becoming an increasingly powerful way of looking at gene control through analysis of the proteins they generate. Although many pathogens have already been detected in bees and many were also discovered in the Plos One study, two different organisms seemed to consistently track one another and correlate best with CCD, including a large DNA virus, not described in bees previously, and referred to as the invertebrate iridescent virus (IIV; Iridoviridae); however samples also consistently contained a microsporidia Nosema apis (fungus); the co-localization of these two pathogens was more consistent with CCD than either one alone. Once a hive was infected, forager flights began to decline, as dead honey bee samples showed increasingly high peptide counts from the two pathogens. Using pathogen injections into single bees (see figure), they were able to show that bee toxicity was far more evident when both pathogens were injected as opposed to either one alone.

Injection of single bees

The take home message from this study is twofold: first MSP is a powerful tool for studying the pathogenic origins of bee infections and secondly, perhaps a dual infection with a previously unknown (in bees) large DNA virus (Iridoviridae) and a  fungal agent (Nosema apis) accounts for beehive collapse in America. The authors are quick to point out that  CCD in other countries may be attributed to different pathogens and that their analysis may only account for the problem in North America. It is still not clear whether the dual infection is the cause of CCD or whether it is a sign of imminent colony collapse, but the injection studies certainly point to these two pathogens as the cause rather than an indicator. The obvious question is that if the double pathogen theory is correct, how can CCD be treated and can beehives be restored to centers of industry and productivity? Many workers in the field seem to believe that treating the fungus may be the best approach, but as the graph shows, fungus control alone may not solve the entire problem. Iinjections with either pathogen reduced bee lifespan over controls. Perhaps on the way to recovering normal beehive function, we may have a period in which beehive lifespan is reduced, while still serving a pollinating function. The other possibility that is difficult to eliminate is that healthy bees can effectively fight off these infections, while bees that are environmentally intoxicated through other means cannot. Thus, one can ask whether CCD in North American bee colonies reflects the globalization of pathogen exposure or have these pathogens always been in the environment and now have opportune moments for bee infection, because their hosts decline in health through other mechanisms? Only time and a lot more research can answer these questions. The good thing about the Plos One report is that a new bee pathogen has been discovered and it may hold important clues to the future of pollination and the security of our own food supply.

Let’s see now, how would the free market  respond to the pollination problem we are facing in America? No, they would not invest in the development of electronic pollinators because the development time is too long (remember that the lifespan of a CEO is about five years, so investment must yield something substantial within that time frame).  Only the shaky and uncertain thrust of venture capitalism would respond with long-term investments and the hope of a payoff down the road. That sector of our financial repertoire  is about the only healthy element  that remains, but it is too small to be a broadly effective source of financing.  In the meantime, thank God we have a government who will support these studies, though I find it worrisome that a U.S. Army MSD apparatus was necessary, rather than having one available to the scientists on their own, together with the expertise required to run the machine and interpret the data. This is what happens when grants get cut to the bone and research is limited because of limited funding. I counted eighteen authors on the Plos One article and thirteen different institutional locations. A problem of the depth and magnitude of CCD can only be approached through highly collaborative scientific efforts.  CCD is truly one of the more profoundly disturbing components of our modern culture and, in my view,  should be ranked with global climate change as a looming threat for which we need to mobilize a strong research effort, preferably one that doesn’t require the American military. On the other hand this story represents a good union of vital resources and technologies that proved essential to unravel this part of what remains as a serious whodunit problem.

RFM

Fig 1. A description of this figure is found at the bottom of this posting

Recently I was reading about the Oregon coast and discovered that, since 2002, the region has experienced sudden periods during the summer months in which the shallow ocean water dramatically loses oxygen levels below those required to sustain normal marine life. The first occurrence of this event took place between Newport and Florence along the Oregon coast, and included Yachats, the small town where we stayed. Though I did not personally see any evidence of fish or invertebrate kills, these surges of hypoxic coastal ocean water take place further out in the shallow ocean water beyond the shores and are evident at depths up to about 50 meters or so: because of the intense wave action, tidal pools probably get effective oxygenation through wave aeration; its an excellent mechanism for mixing water and air and the Pacific ocean seems very adept at creating intense wave activity. I have always appreciated how much better the Pacific ocean is at generating large, strong waves when compared to its Atlantic cousin.

When hypoxic events occur, many fish are able to swim out of oxygen depleted regions into more sustainable water, whereas the slower invertebrates are stuck, and in the case of the Oregon coast, thousands of invertebrates have been dying every summer when the ocean becomes intolerably hypoxic. You can view a Quick Time video clip of a fish/invertebrate kill photographed underwater along the Oregon coast here: it amounts to a massive kill.

Marine biologists tell us that normal ocean surface water contains 5 to 8 ml of oxygen per liter of ocean. But during these anoxic spells in Oregon, the measured oxygen level was as low as 1.4 ml/l, too low for most fish and invertebrate survival. Many regions of the world have hypoxic ocean waters, some of which have been created by eutrophication, or fertilizer runoff from intense agriculture, which produces blooms of plankton that reduce the oxygen content of the water. But the scientists who initially investigated the Oregon coast hypoxia knew that it was unlikely to be caused by eutrophication, simply because farming along the Oregon coast didn’t seem sufficient to generate significant fertilizer runoff.  Initially, marine biologists thought that they were viewing a once-in-a-lifetime event, but anoxic waters along the coast of Oregon are now an annual event and have been detected each summer since the first large scale fish and invertebrate kills of 2002. From as early as mid-April to mid-October, hypoxic water has been the rule, though fluctuations in the intensity of oxygen depletion give variance to its magnitude. To this day, the cause of this phasic oxygen deprivation is unknown, though several theories seem to be prominent among oceanographers and marine biologists. Some have even considered this phenomenon to be part of a natural, long-term cycle of ocean behavior.  But, no significant letup has occurred and in 2006, the most extreme case of anoxia took place in which coastal waters lost all detectable oxygen levels for four weeks. In that instance starfish, mussels and rockfish died in large numbers, while other, more mobile fish were able to flee the hypoxic zone, which grew to 3,000 square kilometers. Furthermore the region has been monitored for oxygen content at different depths going back to 1950 and from 1950 to 1999, no anoxic events were recorded (see Fig 1).

The fishing industry along the coast of Oregon has been understandably alarmed about this recurrent hypoxic condition, as fishing brings in hundreds of millions of dollars each year into the economy. But Oregon’s hypoxic summer coastal waters are part a global problem, though the causes of ocean hypoxia vary for each region and always have a local component as well. Increasingly the oxygen content of our ocean waters has been receiving more attention and there is broad agreement on the impact that global climate change may have on ocean oxygenation levels, including i)  a failure to properly mix the water column through changes in oceanic currents, that could be seriously impacted by global climate change and its effect on the natural oceanic currents which exchange cool norther waters with warmer waters near the equatorial zones and ii) the warming of the ocean water itself reduces its capacity to dissolve oxygen, a strict reality of chemical reactions.  According to the 2007 IPCC report, from the period 1961 to 2003, global ocean temperature have risen by 0.10°C from the surface to a depth of 700 meters.

Biologists believe that the magic number for oxygen comes in at about 2 ml/l, below which much of the ocean fauna cannot exist; there are now large regions of our ocean, particularly those near tropical areas, where the intermediate depths of the water have reached this level of incompatibility.  While there is plenty of evidence for an increase in the temperature of the ocean over the last fifty years, so far, there is no evidence that the normal ocean currents have been altered by global climate change conditions, at least not for the major currents we concern ourselves with. If there is a compensatory side to global climate change, it is that tropical storms, whose frequency and magnitude can be correlated with ocean water temperature, help to force mixing of the ocean water with the more oxygen rich air, serving to overcome other tendencies to form oxygen-depleted zones, though the significance of this so called “benefit” has been hard to guesstimate. Who wants to be on the sidelines cheering on another Katrina?

The Oregon coast is part of a large West Coast ocean ecosystem, in which shallow, oxygen-rich ocean water, found at depths up to about 50 meters, leads to much deeper, oxygen deficient water found beyond the continental shelf, where depths become hundreds of meters or more. Those deeper regions are poor in oxygen but rich in nutrients. Measurements of oxygen levels as deep as 600 meters have been ongoing in the Oregon region for decades, which, until 2002, did not reveal coastal water hypoxia (Fig 1, left). So, if eutrophication doesn’t explain Oregon’s coastal oxygen deficiency, what does?

The most parsimonious explanation for Oregon’s summer anoxia seems to be that the deeper oxygen minimum zone (OMZ) has been upwelling at higher rates than normal and mixing with the more superficial oxygen-enriched waters in disproportionate ways that did not happen before, but might still be part of a very long periodic cycle that could last for decades or more. Others suggest the more obvious,  that what’s going on in Oregon is a perfect storm created by changes in weather, climate and ocean currents. If so, this should alarm all of us, because it illustrates how quickly the ocean environment can change. We must remember that 71% of the surface of the earth is covered by ocean water.

This new mixing between the two pools of ocean water not only tells us that the oceans can change quickly, but that they can do so with a surprisingly quick lethal outcome. There is clearly a balance force at work here in nature with ocean water mixing that is difficult to comprehend, but mind-numbing to appreciate when it doesn’t work to its historic perfection. It’s hard not to get analytical about this observation without thinking how finely tuned it all is, how interdependent the global system is and then wonder how badly out of tune we have forced mother nature’s engine for sustaining life on the land as well as the ocean. Surely we need to learn better than we ever have that land and ocean are joined at the hip. Excessive carbon dioxide in the atmosphere is acidifying the ocean, but doing so much more and in so many different ways, most of which we cannot yet articulate. Perhaps our very survival is the biological experiment. But for this experiment, mother nature is sitting on the sidelines, as we started the ball rolling on this one.

We use models to predict the impact of global climate change, but with the oceans, we have a laboratory. We should all be jumping into the oceans and making measurements! If we can’t save the country, let’s put everyone to work saving the planet!

RFM

(below is a copy of the figure illustration taken from the Chan et al Science article (note: hydrocasts are water samples obtained from a group bottles that are coupled to one another and sunk to get samples of water at different depths)

Fig. 1. Taken from a Science Brevia paper by Chan et al (Science, 319, 920, 2008). Dissolved oxygen profiles during the upwelling season (mid-April to mid-October) in the upper 800 m of the continental shelf and slope of Oregon (42.00°N to 46.00°N). (A) 1950 to 1999 from the World Ocean Database and Oregon State University archives (n = 3101 hydrocasts, blue). (B) (A) with additional data for 2000 to 2005 (n = 834 hydrocasts, green). (C) (A) and (B) plus data for 2006 (n = 220 hydrocasts,red). The black vertical line denotes the 0.5 ml/l threshold. (Insets) Overlapping locations of hydrographic (blue, green, and red) and remotely operated vehicle (black) stations through time and the 100-m and 1000-m isobaths.

In case you haven’t heard, bottled water is not regulated and, in many cases, it is merely tap water or worse (one example pointed out in the documentary was one in which a small company drilled a hole for water next to a Superfund site for hazardous waste removal). Bottled water in this country is already a $10 billion business and worldwide the sales are more than $ 100 billion. The United Nations has estimated that for $30 billion, the entire population of the world could be provided with sufficient water for their daily  human needs. In the credit section of the documentary, they urge viewers join in signing a petition and contribute to a movement within the U.N. to provide safe, fresh water for all human inhabitants of the world, as an innate right of global  citizenship (that should extend to animals as well, but that’s getting a little ahead of the game). Doesn’t that sound simple and right?

The full wording of UN Article 31 is  “Everyone has the right to clean and accessible water, adequate for the health and well-being of the individual and family, and no one shall be deprived of such access or quality of water due to individual economic circumstance.” You can sign the petition by going here. This pursuit of privatized water is a growing multinational corporate menace created by the sinister for-profit drive by the amoral free market economy, the force that is increasingly impoverishing the globe, with no major obstacles yet standing in its way. The economic crash we are still enjoying, given to us by corporate greed, is being used to accelerate the move towards complete privatization of our water supply. Our public water supply is under a threat that extends to all corners of the globe.

I previously commented on how Bolivia managed to drive out Bechtel, a corporate giant, who had privatized the local water supply of Cochabamba (as one condition for receiving a World Bank loan), but had to leave one step ahead of the hangman when their enterprise went sour because of rapid increases in local water charges. Then too, I raised the issue a while ago about why bottled water is an unnecessary ripoff and serves to remove pressure to keep our drinking water supply safe and continuously evaluated.
This documentary on water is an easy, but disturbing introduction to the vast scope of our water supply future.  The impact of trapping water by damning rivers goes far deeper than we might think. By creating huge numbers of ever larger damns, we massively reduce the normal flow of nutrients that eventually find their way to the ocean and help sustain both river and ocean sea life.  Creating damns not only reduces the capacity of our oceans to support life, but the nutrients that are trapped by the damn sink and rot and contribute methane gas to our environment, one of the greenhouse gases that we have to worry about. The High Aswan damn built on the Nile in the 1960s, has reduced the flow of nutrients to farmers, such that some of the electricity generated by the damn has gone into the production of fertilizer to replace what was lost when the damn became operational. But the replacement fertilizer is very rich in phosphates, which in turn generate large algae blooms. While the high Aswan damn provides a large fraction of electricity to the region, many who have studied the impact of the damn over its 40 plus year history,  have concluded that its net effect for the population has been negative.

Global climate change, combined with poor distribution and conservation of our water supply (more golf courses in Arizona?) are creating a crisis of water distribution, that, like global climate change, many of us will increasingly experience as one component of our future life on this shrinking planet during the advancing decades of this century. It seems that nature picked this century to test our wisdom in managing natural resources and, in response to this dilemma, we selected GW Bush as the first leader of this potentially dangerous new century. Good choice America! You probably thought I would not be able to squeeze in a reference to GWB in this short article, but there you have it! You may recall that GWB has purchased a huge piece of property in Paraguay, near one of the largest aquifers (the Guarani aquifer) in South America. What do you think a free marketeer like GWB is planning for his property development? It has the added feature that it is protected by a nearby secret U.S. military base.

RFM

While it looks as though this salmon may soon be in the marketplace,  it is unclear whether the fish will be given special labeling indicative of its genetic makeup. While the public has not been in on the decision-making process during the approval  by the FDA, they will have an opportunity to evaluate the fish once it enters into the market place.  Although AquaBounty claims that these fish will help bring fish to market with fewer resources, it is not entirely clear in which way that works. A fish that gets larger, faster will require more food to get there, though the human effort in supplying that food will presumably be reduced, hence the savings.  But, will the genetically-altered salmon be as resistant to infection and parasitic disease compared to their normal genomic cousins? Only time will tell whether these changes are maladaptive when the entire panoply of generational  life’s experiences are taken into account. But the fact is that virtually all Atlantic salmon that we eat today come from commercial fish farms.

The FDA has already signed off on the idea that the animal has a stable genetic makeup  and that the fish are not harmed if you follow multiple generations. AquaBounty is expecting approval in the next few months to begin selling the eggs to fish farmers. What a super-voracious salmon will to do the environment is not clear.  AquaBounty has indicated that all of their fish will be grown in inland tanks, so that they cannot escape into the wild. This arrangement will be different from other commercial salmon fish farms that have their fish cages inserted into bays and inlets to take advantage of natural water conditions. Such arrangements have been criticized for the influence they have on normal migrating salmon and especially on the salmon fry that come back from fresh water hatching, heading for the sea. Such fry often get infested with parasites that flourish in the overcrowded fish farm cages as they pass through, often with a lethal outcome.

This is only the beginning of the brave new world of genetically modified commercial  farm animals. Look next for the “enviropig” which has been genetically modified to produce less phosphorus pollution in its manure.  The American public already seems to have accepted genetically modified plant food sources, while our European cousins remain skeptical.  It remains to be seen whether we will accept genetically modified meat sources; it appears that the AquaBounty salmon will be the first public test of the acceptability of such animals. Will they have less mercury? However, since it is possible that these fish will not be labeled to indicate their genetic status, we may never know from whence they came. That’s the way AquaBounty wants it and there are some indications that’s they way it will be.

RFM