作者: Claire L. Parkinson
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摘要: Polar sea ice is a key element of the climate system and has now been monitored through satellite observations for over three half decades. The reveal considerable information about polar its changes since late 1970s, including prominent downward trend in Arctic coverage much lesser upward Antarctic coverage, illustrative important fact that change entails spatial contrasts. decreasing corresponds well with contemporaneous warming exhibited particularly large decreases summers 2007 2012, influenced by both preconditioning atmospheric conditions. increasing not as readily explained, but differences trends suggest possible connection circulation have perhaps ozone hole. covers issues surrounding those many commonalities broader their issues, allowing to be viewed some ways microcosm global change.