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Warm-air advection, air mass transformation and fog causes rapid ice melt
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2015
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Source: Geophysical Research Letters, 42(13), 5594-5602.
Details:
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Journal Title:Geophysical Research Letters
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Personal Author:
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NOAA Program & Office:
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Description:Direct observations during intense warm-air advection over the East Siberian Sea reveal a period of rapid sea-ice melt. A semistationary, high-pressure system north of the Bering Strait forced northward advection of warm, moist air from the continent. Air-mass transformation over melting sea ice formed a strong, surface-based temperature inversion in which dense fog formed. This induced a positive net longwave radiation at the surface while reducing net solar radiation only marginally; the inversion also resulted in downward turbulent heat flux. The sum of these processes enhanced the surface energy flux by an average of similar to 15Wm(-2) for a week. Satellite images before and after the episode show sea-ice concentrations decreasing from > 90% to similar to 50% over a large area affected by the air-mass transformation. We argue that this rapid melt was triggered by the increased heat flux from the atmosphere due to the warm-air advection.
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Source:Geophysical Research Letters, 42(13), 5594-5602.
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DOI:
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Document Type:
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Rights Information:CC BY
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Compliance:Submitted
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Main Document Checksum:urn:sha256:d4381a636068d97d0da75bbbadcba4b9bed03185398cd432d46a6076ba83c3ab
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