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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

Publisher, publication year, extent ...

  • 2015
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-120094
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-120094URI
  • https://doi.org/10.1002/2015GL064373DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • 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.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Shupe, Matthew D. (author)
  • Brooks, Ian M. (author)
  • Persson, P. Ola G. (author)
  • Prytherch, John (author)
  • Salisbury, Dominic J. (author)
  • Sedlar, JosephStockholms universitet,Meteorologiska institutionen (MISU)(Swepub:su)jose7536 (author)
  • Achtert, Peggy (author)
  • Brooks, Barbara J. (author)
  • Johnston, Paul E. (author)
  • Sotiropoulou, GeorgiaStockholms universitet,Meteorologiska institutionen (MISU)(Swepub:su)geso4462 (author)
  • Wolfe, Dan (author)
  • Stockholms universitetMeteorologiska institutionen (MISU) (creator_code:org_t)

Related titles

  • In:Geophysical Research Letters42:13, s. 5594-56020094-82761944-8007

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