Global warming skeptics have often claimed that climate models exaggerate ongoing climate change. But the new study of Arctic sea ice and snow on land documented the opposite: Climate models, in this important area, underestimate the effects. The findings add urgency to demands that the U.S., China and other major greenhouse gas polluters curb their emissions and switch to cleaner fuels.
Flanner and his colleagues measured ice and snow between 1979 and 2008. They found that ice and snow in the Northern Hemisphere are now reflecting on average 3.3 watts of solar energy per square meter back to space, a reduction of 0.45 watts per square meter over three decades.
То есть - меньше льда, больше тепла поглощается, становится теплее. Потепление с ускорением.
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