Search Results for Tag: Arctic
Arctic icon in decline
As I plan my coverage of this year’s annual UN climate conference, this time in Peru, a news item from WWF pops up in my mail box. The organization is concerned that the number of polar bears in the Beaufort See in Alaska and in north-western Canada has dropped by around 40 percent in the last ten years. Now that is a very worrying statistic.
It is based on a study published in the journal Ecological Applications: Polar bear population dynamics in the southern Beaufort Sea during a period of sea ice decline.
In 2004, it seems 1,500 polar bears were counted. The latest count showed just 900. Declining sea ice and a lack of prey seem to be the likeliest causes. Another piece of evidence to justify the decision in 2008 to list polar bears under the US Endangered Species Act.
WWF fears the worrying trend will continue if climate change is not halted. There are only between 20,000 and 25,000 polar bears left in the world. With the average air temperature in the Arctic a good five degrees centigrade higher than it was a hundred years ago, it is hardly surprising that nature is struggling to cope. As the sea ice declines, the bears are losing their habitat. You might also remember the pictures of all those walruses on the beach a few weeks ago. They too, were affected by the decline of the sea ice where they usually rest between dives.
So what can we do to halt the decline in the polar bear population? This brings me back to the forthcoming climate conference in Peru. I am finding it difficult to arouse interest in this year’s meeting. “Paris next year is the important one”, I hear. So does climate action just get put on hold for another 12 months? Tell that to the polar bears. One single conference cannot save the world from the climate catastrophes that could lie ahead if the world does not manage to reduce its emissions drastically in the next few years. UNEP’s “Emissions Gap Report 2014”, just published yesterday, says we have to be carbon-neutral by the 2nd half of this century to keep temperature rise below two degrees centigrade. There is still a huge gap between the pledges made by countries within the UNFCCC framework and what is necessary for that. Emissions would have to peak within the next ten years, says the UNEP report, based on the latest IPCC data. Otherwise we risk severe and irreversible climate change with all the droughts, floods and other impacts that come with it.
Given the need for urgent action, I fail to understand how anyone can say “forget Peru, wait for Paris”. I would be the first to stress that these conferences alone cannot halt climate change. The switch to renewable energy is already underway. But ultimately, governments have to agree to binding targets. We have seen encouraging signs from the top emitters China and the USA. Without those international negotiations, this is unlikely to have happened. Let us take the Peru conference as an opportunity to focus world interest on the urgency of climate action. Countries have to keep doing there homework. I don’t know if we will be able to turn our energy policies around in time to save the bears. But if they are to have any chance – at the risk of sounding clichéd: the time for action is now, and any major climate event is a chance to say so.
DateNovember 21, 2014 | 4:50 pm
The statement by veteran Arctic researcher Peter Wadhams that the Arctic could be ice-free in summer as early as 2020 sparked a lot of discussion. Recently I had the chance to talk to Professor Stefan Rahmsdorf, Professor of Physics of the Oceans and head of Earth System Analysis at Germany’s Potsdam Institute for Climate Impact Research (PIK) about Wadham’s forecast.
DateNovember 14, 2014 | 12:35 pm
TagsADN, Alaska, Arctic, Barrow, Berlin Wall, Climate, Craig Medred, PIK, Potsdam Institute, Rahmstorf, science, sea ice, UN talks, Wadhams, Warming
Acid Arctic Ocean and Russell Brand?
Is ocean acidification a term you are familiar with? If you are a regular Ice Blog reader, I would like to think you will be. But I am prompted to ask this question because the term came up during a discussion at a weekly evening class I attend, and I was flabbergasted that none of the people there had a clue what it meant. These were all university-educated professionals. That means we in the media have our work cut out for us explaining how climate change is making the seas more acidic, and why this is something we should be worried about.
This incident has reminded me that we journalists have to avoid assuming that everyone is familiar with the terms we use in our coverage on a regular basis. Climate change is the kind of topic where you want to reach a specialist audience, but also the vast majority of the population. We all have to change our habits to reduce CO2 emissions, and we all have to vote for the politicians who have the responsibility for energy and environment policy. That means we need to talk about the problems in a way everybody understands.
I am encouraged to see the BBC website had a longer article on the threat of ocean acidification a few days ago. I don’t think it has made its way into the tabloids though, correct me if I am wrong.
I was made very aware of the issue during a trip to Arctic Spitzbergen in 2010 with a team of scientists monitoring just what happens to the life forms in the sea when it becomes more acidic because it is absorbing so much of the CO2 we emit. The polar regions are suffering more than others, as cold water absorbs CO2 faster.
Towards the end of last year, I interviewed Professor Alex Rogers from the University of Oxford, who is also the scientific director of the International Programme on the State of the Oceans, which had just published a major study on acidification.
Listen to the interview:
He told me: “The oceans are taking up about a third of the carbon dioxide we’re producing at the moment. While this is slowing the rate of earth temperature rise, it is also changing the chemistry of the ocean in a very profound way.”
Carbon dioxide reacts with sea water to form carbonic acid. Gradually, this makes oceans more acidic.
Threat to marine life
Sea water is already 26 percent more acidic than it was before the onset of the Industrial Revolution. According to the IPSO report, it could be 170 percent more acidic by 2100.
Over the last 20 years, scientists around the world have been conducting laboratory experiments to find out what that would mean for the flora and fauna of the oceans. Ulf Riebesell of the Helmholtz Institute for Ocean Research in Kiel, a lead author of the report, conducted the world’s first experiments in nature, off the coast of the Arctic island of Svalbard in 2010. This was the project I visited.
Giant test-tubes were lowered into the ocean 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. The experiments showed that increasing acidification decreases the amount of calcium carbonate in the sea water, making life very difficult for sea creatures that use it to form their skeletons or shells. This will affect coral, mussels, snails, sea urchins, starfish as well as fish and other organisms. Scientists say some of these species will simply not be able to compete with others in the ocean of the future.
Hard times for coastal residents
All this will have severe economic and social consequences. Ultimately, acidification will affect the food chain. Tropical and sub-tropical areas with warm-water corals are going to suffer. Coral reefs are home to numerous species, serve as nurseries for fish and are a valuable tourist attraction. They also protect coastlines against waves and storms.
At the same time, the polar regions are suffering more than others, as cold water absorbs CO2 faster. Riebesell told me the experiments in the Arctic indicate that the sea water there could become corrosive within a few decades. “That means the shells and skeletons of some sea creatures would simply dissolve.” What a horrific prospect.
The Antarctic is already affected. IPSO’s Alex Rogers told me: “We’re seeing instances where we’re finding tiny shelled molluscs, tiny snails that swim in the surface of the oceans, with corroded shells.”
These creatures play a key role in the marine food chain, supporting everything from tiny fish to whales. “One of our primary sources of marine-derived protein is in rapid decline,” says Monty Halls, manager of the UK-based Shark and Coral Conservation Trust. He describes ocean acidification as the “most serious threat to our children’s welfare.” Monty is working to produce video and cartoon material to interest the younger generation in the need to change our behavior to protect marine life.
Two German scientists Antje Funcke and Konstantin Mewes have written and illustrated a children’s story called Tipo and Tessi to make kids aware of the need to protect the ocean. So far, it has only been published in German. The English translation is available, but so far there is a lack of funding for publication.
Vicious circle of climate change
Scientists are also concerned about a feedback effect that will further exacerbate global warming. In the long run, the ocean will become the biggest sink for human-produced CO2, but it will absorb it at a slower rate. That means the more acidic the ocean becomes, the less capacity is has to act as a buffer.
Alex Rogers sees a further problem: “Carbonate structures actually weigh down particular organic carbon. In other words, they help carbon to sink out of the surface layers of the ocean into the deep sea. Anything that interferes in that process can potentially accelerate the rate of CO2 increase in the atmosphere.”
And that would be very dangerous. “The rates of CO2 increase we are seeing at the moment are probably as high as they’ve been for the last 300 million years,” says Rogers.
The IPSO scientists draw an unsettling comparison between conditions today and climate change events in the past that have resulted in mass extinctions. They say a lot of these major extinction events occurred in connection with high temperatures and acidification, similar effects to the ones that we are experiencing today.
The BBC article I mentioned earlier also mentions new research by scientists at Exeter University, indicating that increasing acidity creates conditions for animals to take up more coastal pollution, like copper. That would mean not only creatures with calcium-based shells would be endangered.
Find a celebrity champion?
The experts stress that it is not too late to halt the acidification process, although the CO2 will remain in the oceans for thousands of years. This brings me back to the topics of recent Ice Blog posts: the UN climate negotiations and the need for urgent action. And of course, to the mention in the title above of the British comedian Russell Brand. This relates to another issue I have been writing about recently: the question of celebrity involvement and whether that can help inform people about and interest them in topics like climate change and the acidification of our oceans. My commentary on this, with regard to Leonardo di Caprio at Ban Ki-moon’s September summit in New York, sparked some interesting discussions.
Just this morning I was reading about Russell Brand and how his new book calling for a revolution on all kinds of issues is attracting huge interest. I have noticed that people otherwise completely uninterested in politics and social issues are at least paying some attention because their favourite comedian is talking about them. Maybe we have to get Russell Brand on board. I’m not sure what kind of action he would advocate, but there would certainly be a lot fewer people who could say they’d never heard of ocean acidification.
DateOctober 31, 2014 | 12:27 pm
It is with a heavy heart that I write this first blog post since my holiday, catching up with the latest climate news. A piece by Alex Kirby of Climate News Network drews my attention to the fact that temperatures in Barrow, Alaska, one of the first places to feature on the Ice Blog when it was created in 2008, have risen by an astonishing 7°C in the last 34 years (looking at the average October temperature). As Alex Kirby puts it, “an increase that, on its own, makes a mockery of international efforts to prevent global temperatures from rising more than 2°C above their pre-industrial level”. We need more climate action
DateOctober 24, 2014 | 2:54 pm
The Arctic on the UN agenda
To those of us who deal with the Arctic on a regular basis, the significance of the melting ice for the UN climate negotiations and vice versa is abundantly clear. But not everybody understands all the connections. A major media event like this week’s New York climate summit hosted by the UN Secretary General Ban Ki Moon in person was a fine chance to focus attention on the need to protect the Arctic. Greenpeace made good use of it, handing over a petition with six million signatures just ahead of the big event, and with hundreds of thousands gathered in New York for the Climate March.
It was timely in more ways than one, just as the latest sea ice figures were published to confirm the melting trend.
The petition calls for long-term protection of the Arctic, with the region warming more than twice as fast as the global average and opening the high north to shipping and commercial exploitation. Greenpeace and other groups are calling for a ban on oil exploration, which could endanger the fragile ecosystem. Experts also have safety concerns about increased shipping.
Commercial development versus environment
Earlier this month, a survey showed that 74% of people in 30 countries support the creation of a protected Arctic Sanctuary in the international waters surrounding the North Pole. The study was commissioned by Greenpeace and carried out by Canadian company, RIWI. Around the same time, the Arctic Council, which combines the Arctic states and indigenous peoples’ representatives, currently chaired by Canada, supported the founding of a new business grouping, the Arctic Economic Council. Its aim is to promote the commercial development of the Arctic region. I wrote about this here on the Ice Blog and on the DW website.
Global responsibility for the Arctic
The UN Secretary General accepted the Greenpeace petition saying:
“I receive this as a common commitment toward our common future, protecting our environment, not only in the Arctic, but all over the world.”
Ban Ki-moon said he would consider convening an international summit to discuss the issue of Arctic protection. He also expressed a desire to travel aboard one of the organisation’s campaigning ships in the Arctic in the near future.
Greenpeace Executive Director Kumi Naidoo, who was part of the delegation, said: “The Arctic represents a defining test for those attending the summit in New York”.
He said leaders should bear in mind that concern for the rapid warming of the world was not consistent with planning oil and gas development in the melting Arctic.
The small delegation that met Ban Ki Moon included Indigenous rights activist and Saami politician Josefina Skerk, who last year trekked to the North Pole to declare the top of the world ‘the common heritage of everyone on earth’.
Skerk, a member of the Saami Parliament, said: “We, who want to continue living in the North, are gravely concerned about climate change and the destructive industries that are closing in. My people know and understand the Arctic, and it is changing in a manner, which threatens not just our survival, but the survival of people all over the world.”
Skerk said humans had created the crisis and had to take action to solve it.
“I urge the Arctic countries in particular to take a giant step up and I think the world needs to pay much closer attention to ensure that it happens. They might as well start here in New York.”
From Kiribati to Svalbard and New York
Melting ice especially from the Arctic Greenland ice sheet is raising sea levels around the globe, endangering low-lying areas. At the weekend, the President of Kiribati, Anote Tong, ended a Greenpeace-organized tour of glaciers in Norway’s Svalbard Archipelago. He said the trip to the Arctic ice had made a deep impression on him, which he would share with world leaders at the U.N. climate summit:
“It’s a very fascinating sight. In spite of that, what I feel very deeply is the sense of threat,” Tong said. “If all of that ice would disappear, it would end up eroding our shores.”
Kiribati is a group of 33 coral atolls located about halfway between Hawaii and Australia. Many of its atolls rise just a few feet above sea level.
In last year’s report by the Intergovernmental Panel on Climate Change (IPCC), experts concluded oceans could rise by as much as 1 meter (3.3 feet) by the end of this century if no action is taken to cut the greenhouse gas emissions causing global warming.
“It won’t take a lot of sea level rise to affect our islands,” Tong said. “We are already having problems.”
Sea ice minimum confirms melting trend
The New York summit coincides with the annual announcement of the minimum sea ice for the year, as the summer season comes to an end. The sea ice – in contrast to glaciers on land – does not influence global sea level, but is regarded as a key indicator of how climate change is affecting the region. This year the figure announced by the US National Snow and Ice Data Centre (NSIDC) was 5.01 million square kilometers. The figure is the sixth lowest extent since records began.
The minimum ever recorded at the North Pole was 3.29m sq km in 2012 – and the eight lowest years have been the last eight years.
Ice levels in the Arctic have recovered from their all-time low, but are still on a shrinking trend, said Julienne Stroeve of the National Snow and Ice Data Centre. ”We have been telling this story for a long time, and we are still telling it,” she said.
NSIDC records showed that, this year, ice momentarily dipped below 5million sq km to 4.98m on 16 September, but the official figure is taken from a five day average.
Satellite data shows that one part of the Laptev Sea was completely clear from sea ice for the first time this summer. One of the most important questions for climate scientists is how soon the Arctic will experience its first sea ice-free summer.
Rod Downie, head of WWF UK’s polar programme, said that this year’s new Arctic minimum should prompt new action from the leaders meeting in New York. He stressed the connection between the Arctic and weather conditions in other parts of the world:
“As David Cameron prepares to meet other global leaders at the UN climate change summit in New York, the increased frequency of extreme weather that is predicted for the UK as a result of a warming Arctic should serve as a reminder that we need urgent action now to tackle climate change,” he said.
The summit was a major PR event to draw attention to the need for urgent and substantial climate action. The accompanying protests around the globe show people are not happy with the slow pace of the climate talks and their governments’ efforts to reduce emissions. Of course there was little in the way of concrete pledges. Still, on the whole, I see it as a successful step on the way to a new climate agreement because it has put the spotlight on climate change at a time where international conflicts are dominating the news agenda.
More commentary on the summit from me here:
DateSeptember 24, 2014 | 2:22 pm
TagsArctic, Ban Ki-Moon, Climate, CO2, Emissions, Greenpeace, ice, New York, sea ice, Sea level, UN, UN talks, WWF