05/01/10

Permalink Melting sea ice has been shown to be a major cause of warming in the Arctic according to a University of Melbourne study.

Findings published in Nature today reveal the rapid melting of sea ice has dramatically increased the levels of warming in the region in the last two decades. Lead author Dr James Screen of the School of Earth Sciences at the University of Melbourne says the increased Arctic warming was due to a positive feedback between sea ice melting and atmospheric warming. “The sea ice acts like a shiny lid on the Arctic Ocean. When it is heated, it reflects most of the incoming sunlight back into space. When the sea ice melts, more heat is absorbed by the water. The warmer water then heats the atmosphere above it.” “What we found is this feedback system has warmed the atmosphere at a faster rate than it would otherwise,” he says.

WUWT: Is Melting Ice Warming The Arctic?

Yesterday, WUWT reported on a University of Melbourne study claiming that melting ice is behind the warming of the Arctic. If this were true, we would expect to see that months with the most ice loss would also show the most warming. In fact, we see the exact opposite.

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