Through the Ice, Darkly

Watts Up With That?

Guest Post by Willis Eschenbach

As always, I get distracted by the daily news. The weather news today is a lovely rainy morning here in drought-plagued California, we got just under an inch (2cm) in last night’s storm, and the outer world is green and happy. Regarding the climate news, Anthony highlighted a claimed recent darkening of the Greenland ice cap.  This is said to be reducing the ice cap’s albedo, which is the percentage of sunshine reflected back to space, and thus leading to more solar absorption and more melting.

Being an inherently suspectful type oif fellow, I thought I’d take a look at the albedo and other anatomical features of Greenland. First, the big view. Let me start with a map showing the global “all-sky” albedo from the CERES satellite data. It shows the average of all satellite observations, both when the sky is clear and when it…

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