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shared by bparksj28 on 23 Sep 12 - No Cached

The summer sea ice is shrinking so much mostly because greenhouse warming is raising Arctic temperatures. This has direct effects: when the air is warmer, more ice melts. It also has indirect effects. Warm, salty water from the North Atlantic sliding below the cold, fresh upper layers of the Barents Sea may be one of them. Another could be that warmer air is often moister. Moist air traps more heat in summer. In winter it tends to create more clouds, which keeps the surface below warm.
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ice-albedo effect:
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The melt is happening much faster in reality than it does in computer programs.
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The effects in the Arctic, on fisheries and trade, may be easier to measure.
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On the other side of the ocean the Parry Channel, a part of the Northwest Passage which has been ice-free in previous years, this year stayed resolutely impassable.
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Such quirks will make the Arctic an unpredictable place to work. But if the details are tricky, the big picture is clear. Clear as an open ocean.
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shared by bparksj28 on 19 Feb 13 - No Cached

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