Search Results for Tag: ocean acidification
Climate change is causing rapid, deeper and more extensive acidification in the Arctic Ocean
A new study reported in Nature Climate Change this week says ocean acidification is spreading rapidly in the western Arctic Ocean in both area and depth. That means a much wider, deeper area than before is becoming so acidic that many marine organisms of key importance to the food chain will no longer be able to survive there.
The study by an international team including scientists from the USA, China and Sweden, is based on data collected between the 1990s and 2010. Presumably, things have got worse rather than better since then. Unfortunately, it takes a long time for scientific research to be evaluated, reviewed and published, so current developments can easily overtake assessments which are already alarming enough in themselves. So yes, I would say this should make us sit up and listen, and lend even more urgency to the need for reducing emissions and combating climate change.
Acid bath for shellfish
Ocean acidification is a process that happens when carbon dioxide out of the air dissolves in the sea, lowering the pH of the water. This reduces the concentration of aragonite in the water, a form of calcium carbonate which shellfish and other marine organisms use to build their shells or skeletons. If the water becomes too acidic, this cannot be formed to the same extent, leaving the animals without their protective shells.
The latest published research shows that acidification is not only affecting much wider areas of the Arctic Ocean, but also that it is happening down to a much greater depth than before.
Between the 1990s and 2010, acidified waters expanded northward around 300 nautical miles from the Chukchi slope off the coast of northwestern Alaska, to just below the North Pole, the scientists write. At the same time the depth of acidified waters has increased from approximately 325 feet to over 800 feet, or from 100 to 250 metres.
“The Arctic Ocean is the first ocean where we see such a rapid and large-scale increase in acidification, at least twice as fast as that observed in the Pacific or Atlantic oceans”, said Professor Wei-Jun Cai from the University of Delaware and Mary A.S. Lighthipe, Professor of Earth, Ocean and Environment at the same University. Cai is the US lead principal investigator on the project.
“The rapid spread of ocean acidification in the western Arctic has implications for marine life, particularly clams, mussels and tiny sea snails that may have difficulty building or maintaining their shells in increasingly acidified waters”, said Richard Feely, senior scientist with NOAA and a co-author.
Tiny sea snails called pteropods are part of the Arctic food web and important to the diet of salmon and herring. Their decline could affect the larger marine ecosystem.
Among the Arctic species potentially at risk from ocean acidification are subsistence fisheries of shrimp and varieties of salmon and crab.
The polar regions are suffering more than others, because cold water absorbs CO2 faster.
Less ice to hold back warm water
The acidification study published this week used water samples taken during cruises by the Chinese ice breaker XueLong (snow dragon) in the summer 2008 and 2010 from the upper ocean of the Arctic’s marginal seas, right up to the North Pole, as well as data from three other cruises going back to 1994. The data, along with model simulations, suggest that increased Pacific Winter Water, driven by circulation patterns and retreating sea ice in the summer season, is primarily responsible for the expansion of ocean acidification, according to Di Qi, the lead author of the paper.
This water from the Pacific comes through the Bering Strait and shelf of the Chukchi Sea into the Arctic basin. Melting sea ice is one factor which allows more of the Pacific water to flow into the Arctic Ocean. The Pacific Ocean water is already high in carbon dioxide and has higher acidity. As it moves north, its acidity increases further for various reasons.
The melting and retreating of Arctic sea ice in the summer months also lets Pacific water move further north than in the past.
The scientists have observed that Arctic ocean ice melt in summer used to occur only in shallow waters with depths of less than 650 feet or 200 meters. But now, it spreads further into the Arctic Ocean.
“It’s like a melting pond floating on the Arctic Ocean. It’s a thin water mass that exchanges carbon dioxide rapidly with the atmosphere above, causing carbon dioxide and acidity to increase in the meltwater on top of the seawater”, said Cai. “When the ice forms in winter, acidified waters below the ice become dense and sink down into the water column, spreading into deeper waters.”
Climate chaos – not just for polar bears
In 2010, I spent some time with scientists conducting the world’s first experiments in nature, off the coast of Svalbard, to establish exactly how increasing acidification affects the flora and fauna in the Arctic Ocean.
Mesocosms, or giant test-tubes, were lowered into the sea to capture a water column with living organisms inside it. Different amounts of CO2 were added to simulate the effects of different emissions scenarios in the coming decades.
Similar experiments are still being conducted in different ocean areas. Results so far have been scary to say the least.
Mussels, snails, sea urchins, starfish, coral, fish, “some of these species will simply not be able to compete with others in the ocean of the future”, Ulf Riebesell from the Helmholtz Institute for Ocean Research in Kiel, GEOMAR, told me in an interview back in 2013, when he was a lead author of a report by the International Programme on the State of the Oceans (IPSO). He was also one of the scientists in charge of that first Arctic acidification in situ experiment I witnessed back in 2010. He is currently coordinator of the German national project Biological Impacts of Ocean ACIDification (BIOACID).
Riebesell says the sea water in the Arctic could become corrosive within a few decades. “The shells and skeletons of some sea creatures would simply dissolve”, he told me.
Those feedback loops
February 27th was Polar Bear Day. Attention focused on how the decline of sea ice is having devastating impacts on those iconic creatures, who have become a key symbol of the effect of our human-induced climate change on the Arctic. Sea snails may not be quite as charismatic, but the related threat to all these tiny organisms in the water is no less worthy of our attention. Journalist Chelsea Harvey of The Washington Post writes:
“The Arctic is suffering so many consequences related to climate change, it’s hard to know where to begin anymore (…) The study highlights the interconnected nature of climate consequences in the Arctic – the way that greenhouse gas emissions, rising temperatures, ice melt and ocean acidification are all linked and help to reinforce one another. And it points to yet another example of a climate effect that’s not just a concern for the future, but is already an issue – and a growing one – today.”
Indeed, Chelsea. Climate change is already changing our lives and our planet. And, of course, what happens in the Arctic doesn’t stay in the Arctic. The scientists studying ocean acidification and its impacts are also concerned about a feedback effect that will further exacerbate global warming.
When the IPSO report on the state of the oceans was published, I interviewed the organisation’s scientific director Alex Rogers, a professor of conservation biology at the University of Oxford. He told me the oceans were already taking up about a third of the carbon dioxide we are producing. The report said sea water was already 26 percent more acidic than it was before the onset of the Industrial Revolution – and it could be 170 percent more acidic by 2100. In the long run, the ocean will become the biggest sink for human-produced CO2, but it will absorb it at a slower rate.
“Its buffer capacity will decrease, the more acidic the ocean becomes”, Kiel-based scientist Ulf Riebesell told me.
The IPSO report also drew a very unsettling comparison between conditions today and climate change events in the past that have resulted in mass extinctions:
“On a lot of these major extinction events we see the fingerprints of high temperatures and acidification, similar effects to the ones that we are experiencing today”.
Now there is a frightening possibility.
It is not too late to do something about this, although the experts stress the CO2 will remain in the oceans for thousands of years. The scientists tell us the key step would be to reduce greenhouse gas emissions, but also to reduce pollution and other pressures on the ocean ecosystem, which reduce its resilience. High time for the Clean Seas initiative, to reduce ocean pollution from marine litter, especially from plastic, launched this week by the United Nations Environment Programme.
DateMarch 2, 2017 | 10:11 am
Tags#CleanSeas, Arctic, BIOACID, Climate, Delaware, Emissions, ice, IFM-Geomar, mesocosm, Nature Climate Change, north pole, ocean acidification, polar bears, research, Svalbard
Will new climate scientist on board influence Exxon?
Last year I had an interesting guest in the studio here at Deutsche Welle. We talked for a good half hour about climate change and the ocean and the need for the Paris Agreement to be put into action, and whether we can still save the Arctic ice as we have known it in our lifetimes.
Excerpts from the interview were broadcast on Living Planet and published online.
Susan Avery is an atmospheric scientist. She was President and Director of the renowned Woods Hole Oceanographic Institute from 2008 to 2015, and became a member of the scientific advisory board to UN Secretary General Ban Ki Moon in 2013. She was in Bonn for a lecture organized by Björn Müller-Bohlen from the department of strategic partnerships at the Forum of International Academic Sciences in Bonn, to explain to people here how climate change is affecting the ocean.
I was surprised to say the least when I saw that from the beginning of February Dr. Susan K. Avery had been elected to the board of directors of ExxonMobil.
So the former Exxon chief Rex Tillerson has taken the key post of Secretary of State in the Trump administration, climate skeptic Scott Pruitt takes over the EPA, the world worries about the future of the climate and the environment – and a leading climate scientist has joined the “largest publicly traded international oil and gas company and one of the largest refiners and marketers of petroleum products”, as ExxonMobil describes itself. It is also at the centre of a huge controversy over claims that it denied climate change, covering up facts and funding climate skeptic bodies. Interesting times indeed. (The Dawn of the Trumpocene?) What are we to make of it all?
I emailed Dr. Avery to try to arrange another interview to discuss her motivation and expectations. She did respond swiftly, telling me she was “honored to be elected to the Board and look forward to serving in that capacity.” But interview requests are being handled by Exxon.
Reactions to her appointment have been mixed, ranging from those who see this as a mere greenwashing type of move by Exxon, and those who think this represents a gradual shift in thinking in the corporation (pragmatic shift to renewable energies given the problems ahead for fossil fuel companies?) and the optimists who think this could possibly even be a chance for a climate expert to influence the policies of the fossil fuel giant and a sign that the times are ‘a changin’.
From the “horse’s”mouth
I decided to have another look and listen to the interview I recorded with Dr. Avery last year, to remind myself and those who will be watching her actions with interest, of what she stands for when it comes to protecting the climate, the ocean and the Arctic.
She is certainly in no doubt about the human factor in climate change. When I mentioned that we humans had been “interfering” with the climate, she laughed good-naturedly at my under-statement, and went on to elaborate on how we are increasing the temperature of the atmosphere by infusing carbon into it. She clearly named fossil fuels as a cause. So what, I wonder, will she be telling the board of ExxonMobil?
Our subject was the effect of greenhouse gas emissions on the oceans in particular. She stressed that while 25 percent of the carbon dioxide we release goes into the atmosphere, a stunning 93 percent of the extra warming created is in the ocean. I went on to ask her about the impacts:
“The carbon dioxide we’ve put into the atmosphere already and the heating associated with that means that we’re already pre-destined for a certain amount of global temperature increase. Many people say we have already pre-destined at least one and a half degrees, some will say almost two degrees. That’s why it’s really important to address the warming questions. And I was really pleased to see the Paris Agreement finally signed off on.”
Fossil fuel threat to the ocean
With the future of US participation in implementing the Paris Agreement very much up in the air under the Trump administration, one wonders how Avery is going to push the decarbonisation of the economy necessary to keep anywhere near the two degree limit, on the board of one of the world’s biggest oil and petroleum concerns.
She also stressed in her talk with me the huge threat to the food chain posed by ocean acidification, as carbon dioxide emissions change the PH of the ocean.
“Our coral reef systems and a lot of our ecosystems in the ocean are having a battle with warming, and those ecosystems that involve shell production and reproduction, as in our reef systems, are also battling acidification issues. This is really critical, because it attacks a lot of the base of the food chain for a lot of these eco-systems. “
Another of the threats to the ocean and the creatures in it is pollution, and Avery told me her time as head of Woodshole was a time of “many crises in the ocean” – including the Deep Water Horizon oil spill:
“That was a real challenge for us in terms of looking at the technologies we have in a different way, solving a different type of problem, and from these crisis moments we learned a lot about our science and our technology, and how to improve it and go forward.”
Well, here’s hoping that knowledge and Dr. Avery’s expertise here will help the company where she is now on the board.
Kudos for the journos
Another point that came out of our interview was Avery’s firm belief in the key role the media have to play in explaining what is happening to our climate and environment to “ordinary people”.
“It is things like Living Planet and others that really begin to educate people and involve people in understanding their environment and their planet,” she said in the DW studio.
As host and producer of Living Planet together with my colleague Charlotta Lomas, it was good to have that acknowledgement from a leading scientist and adviser to the UN. Avery also mentioned progress in recent decades in raising public awareness of environmental issues, such as pollution or acid rain, thanks not least to media coverage.
Unfortunately that job is not made any easier – especially in the United States – with an administration that tries to gag journalists and, it seems, any organization that does not spread the information the government think should be spread.
Motives and methods
So what motivates someone like Susan Avery to take on a controversial position like board membership on a company whose main business results in harmful changes to the planet which she has been working for years to publicise? Perhaps another snippet from the interview can shed some light, when I asked my guest Avery how she had come to be a member of the board of advisors to Ban Ki Moon (not that I would compare that to joining ExxonMobil).
“I was intrigued by the opportunity to play on a stage level that was very high politically, and making sure that science was interfaced in a number of dimensions, into the policy and decision-making process at that level. The committee itself is a wonderful board in terms of the different disciplines represented, different countries represented, different perspectives we all have on the science and the environment, and on human health issues, that the UN needs to be cognizant of.”
Clearly, this is a woman who likes to be in influential positions – and to bring different camps and expertise together:
“We talked a lot about science, the policy-society interface, the role and engagement of stakeholders, those are governments at all levels, the business community, and conservation.
What about the Arctic?
Of course one of the Iceblogger’s most urgent concerns is what climate change is doing to the polar regions. With record temperatures in the Arctic and record low sea ice cover, I asked Avery to sum up the impacts for our Living Planet listeners. She expressed her concern that “we are beginning to see a very rapid increase in ice loss in the Arctic”. She cited the melting of the big land ice glaciers as a major contributor to sea level rise. She talked of how not only atmospheric temperature but warming ocean waters are degrounding glaciers and melting ice from below:
“That is a major concern for sea level rise, but also because when the land-based ice comes into the ocean, you get a freshening of certain parts of the ocean, so particularly the sub-polar north Atlantic, so you have a potential for interfacing with our normal thermohaline circulation systems and (this) could dramatically change that. Changes in salinity are beginning to be noticed. And changes in salinity are a signal that the water cycle is becoming more vigorous. So all of this is coupled together. What’s in the Arctic is not staying in the Arctic. What’s in the Antarctic is not staying in the Antarctic. I would say the polar regions are regions where we don’t have a lot of time before we see major, massive changes”.
So let us hope Dr. Avery will be able to convince her fellow board-members and the decision makers at ExxonMobil about that – and about what has to happen. Fossil fuel emissions in general have got to go down. And the fragile Arctic in particular is in need of protection. Clearly, she has her work cut out for her.
Is there still time?
Reporting Avery’s appointment to the ExxonMobil board, the news agency AFP quotes her as saying:
“Clearly climate science is telling us (to) get off fossil fuels as much as possible.”
I asked her whether she believed, given that we have already put so much extra CO2 into the atmosphere and the ocean, that there was any way we would be able to reverse what is happening in the Arctic. Her reply – unsurprisingly – was not too reassuring:
“I don’t have an answer, to be honest. I think we’re still learning a lot about the Arctic and its interface with lower latitudes, how that water basically changes circulation systems, and on what scale. (…)We know so little, about the Arctic, the life forms underneath the ice (…) And I think it’s really important, because the Arctic will be a major economic zone. We’ve already seen the North-West Passage through the Arctic waters, we’re going to see migration of certain fisheries around the world, and we don’t even know completely what kind of biological life we have below that ice. We have the ability to get underneath the ice now. I call these the frontiers, of the ocean, and that includes looking under ice. It’s a really exciting time.”
If that excitement can be put into protecting the fragile polar ecosystems rather than taking advantage of our emissions misdeeds to date to use easier access for commercial exploitation, I am all for it.
ExxonMobil remains a primary target of environmentalists. It has been the subject of investigative reports by environmental news nonprofit Inside Climate News and others, saying it “manufactured doubt” about climate science even while contradicted by research by its own climate scientists. The company says the reports are biased, but faces government investigations over the controversy. In January, a Massachusetts court ruled the oil giant must turn over 40 years of documents on climate change, in a win for Massachusetts Attorney General Maura Healey, who has described the probe as a fraud investigation. ExxonMobil has countersued against Healey, arguing she lacks jurisdiction in the matter.
As I indicated above, there are environmentalists who were not impressed by the appointment of a climate scientist to the fossil fuel giant’s board. AFP quotes Shanna Cleveland of Ceres, a nonprofit group that works on shareholder actions to pressure companies to address climate change. She called the move a “really good first step, but not much more than that”, and fears Susan Avery could be a “lone vote in the wilderness” on climate change given ExxonMobil’s record on the issue.
The climate advocacy group 350.org dismissed the appointment as “little more than a PR stunt.”
Scientists to the fore
But at a time when some critics say the Trump administration is threatening environmental democracy in the USA, I would prefer to see Dr. Avery’s new position as a move in the right direction, if a tiny one.
With scientists gearing up to march on Washington in the not-too-distant future, we can do with experts who acknowledge, understand and call for action on climate change on every level, in every corner.
Susan Avery described her time on the UN scientific advisory board in her interview with me here in Bonn as as “a fun exercise.” In the current climate, I cannot imagine the same will apply to being the climate advocate on the board of a controversial fossil fuels giant like ExxonMobil.
DateFebruary 8, 2017 | 3:45 pm
TagsArctic, CERES, Climate, Emissions, EPA, Exxon, ExxonMobil, fossil fuel, Inside Climate News, Living Planet, ocean acidification, Oil, Paris Agreement, Susan Avery, Trump, Warming
“Cheers” to a cool Arctic in 2017
As 2016 draws to an end, the shortest day has passed in the northern hemisphere, and it should normally be a “cool” time of the year, in more ways than one, especially in the Arctic. But with temperatures at a record high, sea ice at a record low and feedback loops springing into action, the Arctic is hotting up – and I wish I could say the same for efforts to halt climate change.
Ice expert Jason Box tweeted this morning:
— Jason Box (@climate_ice) December 23, 2016
Meteorologist Scott Sutherland writes on Dec. 22nd:
“(…) North Pole temperatures have climbed to 30oC hotter than normal for this time of year.
(…) Now, in late December, in the darkness of the Arctic winter, air temperatures at the North Pole have actually reached the freezing point, as recorded by weather buoys floating within a few degrees of the pole. As of the morning of Thursday, December 22 (3 a.m. EST), the International Arctic Buoy Programme (IABP), operated out of the University of Washington, recorded temperatures from these buoy up to 0oC or slightly higher.”
“(…) Right now, Arctic sea ice extent is at the lowest level ever recorded.”
Arctic in need of tlc?
It looks like the Arctic is urgently in need of some tlc – or maybe intensive care would be more fitting.
The Arctic Report Card for 2016 recently published by NOAA should have set alarm bells ringing. Based on environmental observations throughout the Arctic, it notes a 3.5 degree C increase since the beginning of the 20th century. The Arctic sea ice minimum extent tied with 2007 for the second lowest value in the satellite record – 33 percent lower than the 1981-2010 average. That sea ice is relatively young and thin compared to the past.
A “shrew”d indicator of Arctic warming
Let me quote what are described as the “Highlights”:
“The average surface air temperature for the year ending September 2016 is by far the highest since 1900, and new monthly record highs were recorded for January, February, October and November 2016.
After only modest changes from 2013-2015, minimum sea ice extent at the end of summer 2016 tied with 2007 for the second lowest in the satellite record, which started in 1979.
Spring snow cover extent in the North American Arctic was the lowest in the satellite record, which started in 1967.
In 37 years of Greenland ice sheet observations, only one year had earlier onset of spring melting than 2016.
The Arctic Ocean is especially prone to ocean acidification, due to water temperatures that are colder than those further south. The short Arctic food chain leaves Arctic marine ecosystems vulnerable to ocean acidification events.
Thawing permafrost releases carbon into the atmosphere, whereas greening tundra absorbs atmospheric carbon. Overall, tundra is presently releasing net carbon into the atmosphere.
Small Arctic mammals, such as shrews, and their parasites, serve as indicators for present and historical environmental variability. Newly acquired parasites indicate northward shifts of sub-Arctic species and increases in Arctic biodiversity. “
Getting the message across
The NOAA website sums it up in a video, saying:
“…Rapid and unprecedented rates of change mean that the Arctic today is home to and a cause for a global suite of trillion dollar impacts ranging from global trade, increased or impeded access to land and ocean resources, changing ecosystems and fisheries, upheaval in subsistence resources, damaged infrastructure due to fragile coastlines, permafrost melt and sea level rise, and national security concerns.
In summary, new observations indicate that the entire, interconnected Arctic environmental system is continuing to be influenced by long-term upward trends in global carbon dioxide and air temperatures, modulated by regional and seasonal variability.”
Margaret Williams, the managing director for WWF’s US Arctic programme had this to say:
“We are witnessing changes in the Arctic that will impact generations to come. Warmer temperatures and dwindling sea ice not only threaten the future of Arctic wildlife, but also its local cultures and communities. These changes are impacting our entire planet, causing weather patterns to shift and sea levels to rise. Americans from California to Virginia will come to realize the Arctic’s importance in their daily lives.
“The science cannot be clearer. The Arctic is dramatically changing and the culprit is our growing carbon emissions. The report card is a red flashing light, and now the way forward is to turn away from fossil fuels and embrace clean energy solutions. Protecting the future of the top of the world requires us to reduce emissions all around it.”
Sack the teacher, kill the messenger?
That was her response to the Arctic Report Card. In my school days, the report card was a business to be taken seriously. A bad report meant you were in trouble and would have to smarten up your act or you would be in big trouble with mum and dad.
The question is – who gets the report, and who has to smarten up their act?
This one should make the governments of this world speed up action on mitigating climate change and getting ready for the impacts we will not be able to halt.
Then again, they could just try to get rid of the messengers who come up with the bad news. If your kid’s report card is bad, do you try to improve his performance – or get rid of the teacher who came up with the negative assessment – based on collected data?
I am concerned that the administration in the wings of the US political stage could be more likely to do the latter. As I wrote in the last Ice Blog post, the new Trump administration is threatening to cut funding for climate research. The proposed new Cabinet is well stocked with climate skeptics.
Concern about research
Financial support for the Arctic Report Card is provided by the Arctic Research Program in the NOAA Climate Program Office. Its preparation was directed by a “US inter-agency editorial team of representatives from the NOAA Pacific marine Environmental Laboratory, NOAA Arctic Resarch Program and the US Army Corps of Engineers, Cold Regions Research and Engineering laboratory.
Yereth Rosen, writing for Alaska Dispatch News, quotes Jeremy Mathis, the director of NOAA’S Arctic research program and one of the editors of the report card.
“The report card this year clearly shows a stronger and more pronounced signal of persistent warming than in any previous year in our observational record”.
“We hope going into the future that our scientists and researchers still have the opportunity to contribute and make possible the summary that we’re able to present. So we have every intention of continuing to publish the Arctic Report Card as we have in the past and pulling together the resources and the right people that allow us to do that”.
Livid and acrimonious
The debate over President Obama’s announcement that he was making a vast area of the Arctic Ocean off-limits to drilling for oil or gas, shows the dilemma of our times – and .. which could influence the living conditions on our planet for generations to come.
Erica Martinson, writing for the Alaska Dispatch News, provides interesting insights into the debate for those of us who do not live in Alaska.
She quotes Alaska’s Republican Congressman Don Young, saying he used “livid language” in his response. Obama’s move means “locking away our resources and wuffocating our already weakened economy”. He goes on “Alaska is not and shuld not be used as the poster child for a pandering environmental agenda”.
Ooh. Livid indeed.
She also quotes Republican Senator Dan Sullivan as describing the move as “one final Christmas gift to coastal environmental elites”. So would those be the indigenous communities being forced to relocate because climate changes are destroying their homes, Senator?
The administration, on the other hand, says it is protecting the region from the risk of a catastrophic oil spill, Martinson writes.
It seems to me that Obama’s parting gift goes rather to the “Alaska Native communities of the North Slope” who “depend largely on the natural environment, especially the marine environment, for food and materials”, and to the many endangered and protected species in the area, “including bowhead and fin whales, Pacific walrus, polar bear and others”.
What about the Paris Agreement?
But as well as that regional aspect, the decision not to open up new regions to drilling for oil and gas is in line with the global need to cut fossil fuel emissions to halt the warming of the world.
Jamie Rappaport Clark, CEO of “Defenders of Widife”, puts it:
“It marks the important recognition that we cannot achieve the nation’s climate-change goals if we continue to expand oil and gas development into new, protine environments like the Arctic and Atlantic Oceans”.
This is not just about Alaska, not just about the Arctic, but the future of the planet as a whole.
The World Meteorological Organization (WMO) says 2016 is on track to be the hottest year on record. According to UN estimates, the global temperature in 2016 was 14.88 degrees C – 1.2 degrees higher than before the industrial revolution began in the mid-19th century.
In an article for the New York Times on December 22, Henry Fountain and John Schwartz quote NOAA’s Arctic Research Program director Jeremy Mathis.
“Warming effects in the Arctic have had a cascading effect through the environment” “We need people to know and understand that the Arctic is going to have an impact on their lives no matter where they live”. That includes the oil-industry-friendly and climate skeptical team that is set to enter the White House in the New Year,
So when I propose a toast to a cool Arctic in 2017, I am not just thinking of my friends in the high north. For all our sakes, we have to kick our fossil fuel habits, save energy and cut the emissions which keep the giant refrigerator that helps make our world a viable place to live well chilled.
DateDecember 23, 2016 | 2:58 pm
Tags2017, Alaska, Arctic, Arctic Economic Council, Climate, Emissions, Greenland, ice, New Year, Obama, ocean acidification, Oil, polar bears, research, science, Svalbard, Trump, Warming, wildlife, WWF
Alpine ice – no more than a memory? New archive of ice cores
Alpine glacier – endangered species? (Pic: I.Quaile)
It was with mixed feelings that I read an article drawn to my attention by a colleague earlier in the week.
“Protecting Ice Memory” is the subject –a description of a new project to create a “global archive of glacial ice for future generations”.
I am generally enthusiastic about all projects concerning ice. The worrying thing is the reason why this project has been deemed necessary.
“The goal is to build the world’s first library of ice archives extracted from glaciers which are threatened by global warming”. There we have it. Another frightening acknowledgement of the extent and speed of global change.
How sad that our human-induced warming is threatening our ice, especially here in the European Alps, where we do not have as much ice as in some other parts of the globe. How good that we have the technology to save some of it for posterity. How frustrating that while we also have the technology to shift to a zero-carbon economy and stop the ice melting, we are not actually doing it anything like fast enough.
Starting on Monday August 15th and carrying on until early September, an international team of glaciologists and engineers (French, Italian, Russian and American) will be travelling to Mont Blanc, in particular to the “Col du Dome” glacier area, which is 4,300 metres or 14,108 feet up. They will be drilling the first ice cores for the “Protecting Ice Memory” project.
Saving the cores
The team will be coordinated by Patrick Ginot from the French Research Institute for Development (IRD), working within the UGA-CNRS Laboratory of Glaciology and Environmental Geophysics (LGGE), and Jerome Chappelaz, director of Research at the CMRS and working within ths same laboratory.
The team will be extracting three ice cores each 130 metres long. These will be taken down by helicopter and taken to the LGGE in Grenoble. Clearly they will have to kept very cold during the process.
In 2019 (why only then, I wonder?), one core will be analysed to start a database which is ultimately to be made available to the whole world scientific community.
The other two will be transported by ship to ANTARCTICA. Yes, you read correctly. There, they will be taken on tracked vehicles across the high plateaus to be stored at the Concordia station, which is run by the French Paul-Emile-Victor Polar Institute (IPEV) and its Italian partner, the National Antarctic Research Programme (PNRA)
In the long term, dozens of ice cores are to be stored in a snow cave at -54° Celsius, which the project describes as “the most reliable and natural freezer in the world”.
The Mont Blanc glacier is the first step. The next will be carried out in 2017 on the Illimani glacier in the Bolivian Andes.
It seems other countries with access to glaciers are also hoping to join the project, including Germany, Austria, Switzerland, Brazil, the USA, Russia, China, Nepal and Canada. That sounds like a real mega-project.
I have commented often enough here on the Ice Blog on the dwindling ice in my own favourite hiking territory in the German and Swiss Alps. Last week it was the turn of the New Zealand Alps to be the focus of this rather sadly motivated attention.
The scientists who came up with the project had the idea after observing a rise in temperatures on several glaciers. At ten year intervals, they say the temperature near the glaciers on the Col du Dome and Illimani in the Andes has risen between 1.5 degrees and 2 degrees (Those figures sound familiar from somewhere…)
“At the current rate, we are forecasting that their surface will undergo systematic melting over the summer in the next few years and decades. Due to this melting and the percolation of meltwater through the underlying layers of snow, these are unique pages in the history of our environment which will be lost forever”, says the project description.
The scientists compare their project to the Svalbard Global Seed Vault on the Norwegian Arctic island of Spitsbergen. Before I read that part, this very comparison had already come to my mind. I had a rare opportunity to visit that vault a couple of years ago.
Svalbard to Antarctica
But one of the very worrying things in that connection is that even that “secure coldspot” has in turn been affected by permafrost melt – at least at a level close to the surface, which caused damage to the entrance area in the early stages.
Will the Svalbard vault ultimately have to be moved to the even colder Antarctic at some point in the future, one might wonder?
I remember a visit to the Alfred-Wegener Institute in Bremerhaven, Germany’s polar agency. One of the highlights was a look into the laboratory where ice cores are processed. Clearly, these provide invaluable evidence of how our planet and life on it have developed. Climate and environmental archives of a quite unique nature.
“Our generation of scientists, which bears witness to global warming, has a particular responsibility to future generations. That is why we will be donating these ice samples from the world’s most fragile glaciers to the scientific community of the decades and centuries to come, when these glaciers will have disappeared or lost their data quality”, says Carlo Barbante, the Italian project initiator and Director of the Instutite for the Dynamics of Environmental Processes – CNS, Ca’Foscari University of Venice”. What a sobering thought – and a daunting task.
And what an inspiring campaign to rescue what it seems we will not be able to save in time in the natural world.
Projects like this cost a lot of money. It is relying on private sponsors. The current European project has funding. The Université Grenoble Alpes foundation is now running a campaign to fund the Bolivian expedition.
Here’s hoping the money will be forthcoming.
And here’s hoping the international community will speed up efforts to halt global warming before we have to create archives to try to document all the ecosystems, species and habitats we are losing faster than we can count them.
DateAugust 5, 2016 | 2:05 pm
TagsAlps, Climate, glaciers, ice, Ny Alesund, ocean acidification, Protecting Ice Memory, research, science, Svalbard, Warming
Can we halt Arctic melt? Hard question for UN advisor
I had a very interesting high-profile visitor here at Deutsche Welle this week. Bonn, John Le Carré’s “Small Town in Germany” is this country’s UN city nowadays, home to organizations like the climate secretariat UNFCCC and the Convention on Migratory Species, CMS. This year marks 20 years of the former German capital in that new UN role. Fortunately for me and my colleagues, it brings a lot of interesting people to the city.
The University and the City of Bonn have been running a series of lectures by members of the Scientific Advisory Board of the United Nations Secretary-General Ban Ki-Moon this year, under the heading “Global Solutions for Sustainable Development”. This week, it was the turn of Susan Avery, who was President and Director of the Woodshole Oceanographic Institution in the USA until last year. She has been on the advisory board to Ban Ki-Moon for the last three years and she and the other advisors are just finishing their report, so it was great to have the opportunity to talk in length.
Sea and sky as dancing partners
Her lecture was about the importance of the ocean with regard to climate, but she also talked to me about a whole range of ocean-related issues in an interview to be broadcast on our Living Planet programme, starting next week.
Susan Avery is an atmospheric scientist, (the first to head a major oceanographic institution, she told me). She has a very attractive image to describe how the atmosphere and the ocean relate to each other:
“In our planetary system we have two major fluids, the ocean and the atmosphere, and think of them as two dance partners… moving along, but in order to get a choreographic dance, they have to talk to each other. They do that through the ocean-atmosphere interface, which is wave motion, spray, all the things that help them communicate. These two create different dances… an El Nino dance, or a hurricane dance, for example. In reality what they do together is transport heat, carbon and water, which are the major global cycles in our planetary system.”
Since the onset of industrialization, we humans have been introducing some different steps to the dance, it seems:
“When you take it to the climate scale, we talk a lot about the temperature of the atmosphere, increases associated with the infusion of carbon, that is human produced. The thing is that the extra carbon dioxide that gets released into the atmosphere through our fossil fuels and deforestation is associated with extra heat. Of the carbon dioxide we release into the atmosphere, half will stay in the atmosphere, 25% will go into the ocean, 25% will be taken up by the land. But if you look at the heating or warming, 93% of the extra warming is actually in the ocean. There are only very small amounts in the atmosphere.”
Centuries of warming pre-programmed
That means a huge amount of heat is actually being stored in our seas:
“And you can understand why, because the atmosphere is a gas, the ocean is a mass of liquid, which covers two thirds of our planet, and it has a huge heat capacity to store that, but that heat doesn’t just stay at the surface. So (..) when you only talk about heat and temperatures at the surface, you’re ignoring what’s happening below the surface in the ocean, and once the ocean gets heated it’s not going to stay there, because there is this fluid motion. So we’re getting to see greater and greater temperature increases at greater and greater depths. And once that heat gets into the ocean, it can stay there for centuries. Whereas in the upper ocean, it might stay 40 or 50 years, when you get into the deeper parts, because of the density and capacity, it stays there for a long time.”
So, she explained, the carbon dioxide we’ve put into the atmosphere already – and the heating associated with that – means that “we’re already pre-destined for a certain amount of global temperature increase. Many people say we have already pre-destined at least one and a half degree, some will say almost two degrees.”
Now if that is not a sobering thought.
And on top of that comes the acidification of the oceans caused by the extra carbon dioxide, which is playing havoc with coral reef systems and shell-based ocean life forms.
“This is really critical, because it attacks a lot of the base of the food chain for a lot of these eco-systems”.
“What’s in the Arctic is not staying in the Arctic”
Susan Avery’s work has included research on the Arctic and Antarctic, so of course I took the opportunity to ask how she sees all this affecting the polar regions.
She explained how the rapid increase in ice melt in the Arctic – both sea-ice and land ice – caused by atmospheric warming above and warmer ocean waters below, is of great concern for two reasons. The more obvious one is the contribution of land ice melt to sea-level-rise. The other, she explained, is that the melting of the land-based ice results in “a freshening of certain parts of the ocean, so particularly the sub-polar north Atlantic, so you have a potential for interfacing with our normal thermohaline circulation systems which could dramatically change that.” The changes in salinity currently being observed, are a “signal that the water cycle is becoming more vigorous”. This, of course, has major implications for ocean circulation and, in turn, the climate, not just in the region where the ice has been melting:
“What’s in the Arctic is not staying in the Arctic. What’s in the Antarctic is not staying in the Antarctic. I would say the polar regions are regions where we don’t have a lot of time before we see major, massive changes”.
What I find particularly worrying is that Susan Avery confirmed there is still so much we do not know about what is happening in the polar regions and in the ocean in general.
“We really need to get our observations and science and models working together”, she told me. “The new knowledge we have created on processes in the Arctic has to be incorporated into climate system models”.
Paris and the poles
So, given that temperature rise of 1,5 to two degrees Celsius could already be a “given”, and the Arctic is being affected much faster and more strongly than the planet on average, is there any real hope that we can hold up these developments and halt the melting of ice in the Arctic? This was clearly a very difficult question for my guest. She told me she had been very relieved that the Paris Climate Agreement was signed and was sure humankind could still “make things better”. But when I asked whether we will really be able to reverse what is happening in the Arctic or halt climate change in the Antarctic, this was what she replied:
“I don’t have an answer, to be honest. I think we’re still learning a lot about the Arctic and its interface with lower latitudes, how that water basically changes circulation systems, and on what scale. But I think what’s really critically needed right now to get a better sense of the evolution of the Arctic, and of sea level rise, is a real concerted observing network. We know so little, about the Arctic, the life forms underneath the ice. We have the technology. What I really see now is a confluence of new technologies, new analytical approaches, new ways to do ocean science, and all it takes is money to really get those robots there, get the genomic studies that you need, the analysis. We are at the stage where we can do so much, to further our understanding, and I would really put a lot into the Arctic right now, if I had the money to do so.”
Me too, Susan.
Ice: the final frontier?
This brings us back to a key problem I have worried about ever since I started to work on how climate change is affecting the Arctic. That change is speeding up so fast, it is virtually impossible for our research to keep pace. As Susan Avery put it:
“The Arctic will be a major economic zone, we’ve already seen the North-West Passage through the Arctic waters, we’re going to see migration of certain fisheries around the world – and we don’t even know completely what kind of biological life we have below that ice. We have the ability to get underneath the ice now. I call these the frontiers, of the ocean, and that includes looking under ice.”
I am reminded of my trip on board the Helmer Hanssen last year, accompanying a research mission to find out what happens under that ice and down in the deep ocean during the cold, dark season.
(Listen to the audio feature here). There is still so much we do not know about life in the ocean – and it might disappear before we even knew it was there.
DateJuly 8, 2016 | 12:07 pm
TagsArctic, Avery, Ban Ki-Moon, Bonn, Climate, Emissions, ocean, ocean acidification, science, Sea level, UN, Universität Bonn, Warming, Woodshole