Arctic Sea Ice: going, going, gone?
July 15th is Arctic Sea Ice Day. You might be forgiven for not realizing that. Every day is the day of something (usually more than just one), the initiator, Polar Bears International, is popular, but maybe not yet a household name, and the world is in turmoil, with terrorist attacks, refugees, Brexit and no shortage of other topics dominating the news agenda.
Still, the Arctic sea ice deserves all the attention it can get.
Another record low
The latest data released by the US-based National Snow and Ice Data Center (NSIDC) for the month of June shows the Arctic sea ice reached yet another record low, the lowest extent for June ever measured since satellite records began in 1979. So far this year, every month except March has seen a record low in the extent of the Arctic sea ice.
Alaska is experiencing a massive heatwave after an amazingly warm first half of the year.
An article on RCI’s Eye on the Arctic says the sea ice melt seems to be attributable to unusual weather patterns over the Arctic. It seems the temperature reached an incredible 29.2 degrees in Kugluktuk, Nunavut on June 5th, 27 on July 6th. Normally, the article tells us, the temperature in western Nunavut varies between 8 and 15 degrees. It is not hard to imagine how this is making the sea ice ooze away. The reflective white ice is replaced by dark ocean, which absorbs even more heat, exacerbating the warming further.
Ice, sea, sky on Living Planet
That is just one of the issues I talked about in my interview with UN science and oceans advisor Susan Avery, which featured in the last Iceblog post. The interview is broadcast in full (well not quite full, but at length), in the latest edition of DW’s Living Planet programme: Ice, Sea and Sky, which I hosted in our Bonn studio. Avery talks about how climate change affects the ocean in general, as well as focusing in particular on what is happening in the Arctic.
“I would say the polar regions are regions where we don’t have a lot of time before we see major, massive changes, where we really need to get our observations and science and models working together”, Avery told me.
Message from Iqaluit
Actually, major, massive changes seem to be already there. Marking Arctic Sea Ice Day, the Living Planet program includes a story by Canadian reporter Elyse Skura, based at Iqaluit, in the northern territory of Nunavut. She talks to local Inuit people about how climate change is affecting their daily lives, and especially traditional livelihoods like hunting and fishing. Hearing the voices of people there talking about the changes in the sea ice and the extent to which their traditional livelihoods are inter-connected with nature, with the environment, land, ocean, ice, atmosphere, I was reminded of my own encounter with the Inupiat people in Barrow, Alaska, back in 2008. The observations are similar. The only difference seems to be that the ice is melting even faster as the Arctic warms more rapidly.
The story ends on a kind of optimistic note, suggesting that the Inuit have always been able to adapt to changing environments. Ultimately, people have no choice but to adapt to a climate that is already changing. Susan Avery told me the extra heat produced by our CO2 emissions ends up mostly in the ocean. 93 percent was the figure she quoted. And she explained how it does not stay at the surface, where it will likely hang around for 40 or 50 years, but is also pumped down to the depths in the course of circulation patterns. And there, she says, it will stay for centuries. It is frightening to think that some scientists believe this means we are already committed to a temperature rise of up to two degrees Celsius.
“No job for an optimist”
I remember discussing the issues of “mitigation and adaptation” in detail in connection with climate change – in an interview with the “new” head of the UNFCCC, the climate secretariat, Yvo de Boer, in 2006. I have always been worried that adaptation could mean abandoning the need to mitigate, to change our behavior and lifestyles and shift to a low-carbon (and ultimately zero-carbon) economy. De Boer convinced me then that adaptation was essential, with climate impacts already visible and tangible. He stressed it was not a case of either-or, but of doing both. How right he was.
But of course he resigned in frustration after the disastrous Copenhagen conference. “No job for an optimist” was the title I gave my commentary at that time.
(Looking back at that, it’s interesting to see how web design has changed since then!)
When the abnormal becomes the norm
So, back to the Arctic Sea Ice, this July 15. A group of scientists studying Arctic systems met in Washington D.C. earlier in the week at an event in the National Press Club sponsored by SEARCH (the Study of Environmental Arctic Change).
Chris Mooney reports on it in The Washington Post, under the title ‘The extraordinary years have become the normal years’. This is something I also hear repeatedly from experts I interview on extreme weather events and similar occurrences.
Mooney quotes Marco Tedesco from Columbia University, a Greenland scientist:
“I see the situation as a train going downhill. And the feedback mechanisms in the Arctic are the slope of your hill. And it gets harder and harder to stop it.”
NASA scientist Walt Meier, who studies Arctic sea ice in particular, is quoted as saying we have lost about twice the size of Alaska in terms of area. He also notes we’ve lost about 50 percent of the thickness. The particularly alarming thing is that all this is happening faster than “even the most aggressive climate models”, says Meier.
Mooney also mentions a 2014 study indicating that in the past three decades, the loss of Arctic sea ice has added 25 percent to the warming caused by carbon dioxide in the atmosphere. A stunning figure! That indicates the extent of the feedback effects coming out of the high North – which should really make us sit up, pay attention and then get moving on cutting greenhouse gas emissions this ArcticSeaIceDay.
DateJuly 15, 2016 | 12:07 pm
Tags#ArcticSeaIceDay, Alaska, Arctic, Canada, Climate, Emissions, ice, Living Planet, polar bears, Polar Bears International, science, sea ice, USA, Warming, weather