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Warm-air advection,...
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Tjernström, MichaelStockholms universitet,Meteorologiska institutionen (MISU)
(author)
Warm-air advection, air mass transformation and fog causes rapid ice melt
- Article/chapterEnglish2015
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LIBRIS-ID:oai:DiVA.org:su-120094
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-120094URI
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https://doi.org/10.1002/2015GL064373DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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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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Shupe, Matthew D.
(author)
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Brooks, Ian M.
(author)
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Persson, P. Ola G.
(author)
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Prytherch, John
(author)
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Salisbury, Dominic J.
(author)
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Sedlar, JosephStockholms universitet,Meteorologiska institutionen (MISU)(Swepub:su)jose7536
(author)
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Achtert, Peggy
(author)
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Brooks, Barbara J.
(author)
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Johnston, Paul E.
(author)
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Sotiropoulou, GeorgiaStockholms universitet,Meteorologiska institutionen (MISU)(Swepub:su)geso4462
(author)
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Wolfe, Dan
(author)
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Stockholms universitetMeteorologiska institutionen (MISU)
(creator_code:org_t)
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In:Geophysical Research Letters42:13, s. 5594-56020094-82761944-8007
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Sedlar, Joseph
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