Sound familiar? Ice-blog readers will remember methane is more than 20 times as powerful as CO2 as a greenhouse gas, and that scientists in the Arctic are measuring the extent of methane emissions from melting permafrost.
There are billions of tonnes of methane captured in the Arctic soil. As temperatures rise and the permafrost melts, more methane is released. It increases the greenhouse effect further, resulting in a “feedback loop”, with the increased warming melting more permafrost and releasing even more methane.
Zackenberg station in Greenland, which I visited this year, is one of the Arctic stations measuring methane. If you haven’t heard the programme I made including interviews with Prof. Morten Rasch, who heads the Greenland environment monitoring programme, it’s available under the “climate” banner on the right of DW’s environment page. There’s also a photo gallery with brief texts if you don’t have the time to listen to the full feature.
Climate Monitoring in Arctic Greenland
Now a study presented in the journal Nature reports a massive rise in the amount of methane being released from the Arctic permafrost.
See also today’s edition of the Guardian.
Guardian’s David Adam on rise in Arctic methane emissions
Although only 2% of global methane comes from the Arctic, the increase is highest in the Arctic, which is warming much faster than the rest of the planet.
The Guardian quotes Prof. Paul Palmer from Edinburgh University as saying the study “does not show the Arctic has passed a tipping point, but it should open people’s eyes. it shows there is a positive feedback and that higher temperatures bring higher emissions and faster warming”.
Edinburgh Climate Expert Paul Palmer

How’s this for a bizarre story to end the week:
Greenpeace has been protesting on Svalbard, Spitsbergen, which belongs to Norway, drawing attention to the fact that coal is still being mined there and fired – amongst other places – in German power stations!
60% of the island is still covered with glaciers – and they’re melting at a record rate. The whole Arctic, as we know, is being affected much worse and faster than the rest of the planet by climate change.
The Greenpeace protesters are targeting the German government and public in particular, given that a big German company is one of the ones using the coal. Their poltical point is also that Germany is still planning to build new coal-fired plants, in spite of the impact they will have on the climate. Greenpeace is calling on Chancellor Angela Merkel – re-elected just last weekend – to re-think the coal policy and put more of an effort into combatting climate change.
There are probably very few people who know there’s still coal being mined on Spitsbergen. Well, let’s see whether this gets onto German tv news this evening. “A hae’ ma doots”, as they say in Scotland (Translation: I have my doubts). Top marks for trying, though, it takes considerable effort to get up to Spitzbergen to mount a protest.
Greenpeace blogger from the Svalbard protest
World leaders block Arctic coal shipment??

(Greenland coastal glacier I photographed this summer)

More worrying news on the ice front. A study based on the analysis of millions of NASA satellite laser images has indicated that coastal ice in Greenland and Antarctica is thinning more extensively than expected. The biggest loss of ice is caused by glaciers speeding up when they flow into the sea, according to scientists from the British Antarctic Survey (BAS) and Bristol University. There is a clear pattern of glaciers thinning across large areas of coastline, sometimes extending hundreds of kilometres inland. The scientists think the cause is probably warm ocean currents reaching the coast and melting the glacier fronts.
Worryingly, the scientific community still does not have enough information to understand this fully and predict what impact it will have on sea level rise.
According to the study, 81 of 111 fast-moving glaciers in Greenland are thinning at twice the rate of slow-flowing ice at the same altitude. This is called “dynamic thinning”, which means loss of ice caused by a faster flow. Apparently, it is much more significant than people thought before. This fits with what scientists I talked to in Greenland a few weeks ago were saying.

Melting from below

It’s the time of reckoning again for the Arctic ice, as summer comes to an end and the freezing seasons starts. The scientists are constantly improving their measuring and forecasting, so the results come as no real surprise.

Germany’s Alfred Wegener Institute for Polar Research puts the ice extent figure at 5.1 million km2, which is only 70 percent of the longer-term average between 1979 and 2000. It is not as low as the schocking record low of 4.1 million km2 in 2007. But the experts stress that does not mean a recovery. The slight increase this year is fresh ice, which is less thick. The AWI’s Professor Ruediger Gerdes says the proportion of thicker perennial ice has been reduced so far that summer ice cover is much more sensitive to atmospheric anomalies than it was 10 or 20 years ago.

Two ships went through the north-east passage this summer. The Arctic is changing fast.

I got a mail today from Lars Holst Hansen, deputy station chief during the summer season at Zackenberg Ecological Research Station, the one I visited in July, and a biologist with NERI, the National Environment Research Institute.
It seems there have been several polar bear visits to the station, right up on to the beach. Lars, many thanks for your short report. Here is one of Lars’ pictures.

PHOTO BY LARS HOLST HANSEN
You may well ask what a polar bear is doing on land like this at this time of the year, no ice in sight anywhere. Presumably he is hungry. It seems he also went close to some Zackenberg kayakers. I’m hoping Lars will send me the scientist’s  view of the visit.
Thanks again Lars, and look forward to hearing more from you.