arctic sea ice

Tag archives for arctic sea ice

As it does every summer, the Arctic Sea ice is melting off. Over the last several years, the amount of sea ice that melts by the time it hits minimum in September has generally been increasing. So, how’s it doing now? The graph above shows the 1981-2010 average plus or minus two standard deviations. Before…

Earth’s northern ice cap is heating up and melting down at an alarming, not previously predicted, rate. A paper just out in Wiley Interndisciplary Reviews: Climate Change, by Josefino Comiso and Dorothy Hall looks at recent historic transformations in the Arctic using satellite imagery, mainly from 1979 to the present. The decline of Arctic ice…

I’m going to update this graph every now and then. There are 12 lines on this graph. The colorful squiggles up along the top are the first ten years of Arctic Sea ice extent for the period for which we have really good data. So this is 1979 – 1988. There is reason to believe…

Tracking Arctic Sea Ice

A few days ago I made a prediction for this year’s minimum Arctic Sea Ice extent. That’s still valid. Or not. Either way, it’s still my prediction. But looking at the ice over the last few days, we see that for the first time in a while the extent of ice estimated by the NSICD…

The Recovery of Arctic Sea Ice Extent

During the northern Winter, much of the Arctic is covered with sea ice. Some of this ice melts during the summer, then it regrows. Over recent years, the amount of ice loss in the summer has tended to increase, almost every year, year after year. In 2012 the loss of sea ice was extreme, falling…

Andrew Revkin thinks so: It is hard to interpret this as meaning anything other than the crisis of Arctic Sea ice melting too much and too fast is over. This is an important thing, because the rapid and widespread melting of sea ice in the Arctic seems to be causing a thing called Arctic Amplification,…

The Recovery of Arctic Sea Ice

Every northern summer Arctic Sea ice melts away and reforms for winter, but how much melts away seems to be increasing on average, at a rate that surprises climate scientists. But there are some who see variation from year to year, and there is variation, in a rather unrealistic way. Here is a graph comparing…

Remember those puddles at the North Pole that at first everyone said were not important, then when someone realized that they were only puddles so a new meme formed and everyone said they are not important? They’re important. From the abstract of a new study, just out: The surface albedo of the Arctic sea-ice zone…

Since 2001 the amount of Arctic Sea ice that has melted during the summer has generally increased. There may have been a long term trend in melting of ice in the northern hemisphere generally, including mountain glaciers, the Greenland glaciers, and seasonally, Arctic Sea Ice. But the seasonal melting of Arctic Sea ice seems to…

Arctic Sea Ice Update

Time to start watching the Arctic Sea Ice breakup. This happens every year, but as you know, the total amount of ice left each summer has been reducing, and the “old ice” which forms a basis for the arctic ice refreeze is disappearing. The result of this change in arctic ice patterns has been a…