Change search
ReferencesLink to record
Permanent link

Direct link
Warm-air advection, air mass transformation and fog causes rapid ice melt
Stockholm University, Faculty of Science, Department of Meteorology .
Show others and affiliations
Number of Authors: 12
2015 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 42, no 13, 5594-5602 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2015. Vol. 42, no 13, 5594-5602 p.
Keyword [en]
warm-air advection, surface inversion, fog, surface energy balance, sea-ice melt, Arctic
National Category
Earth and Related Environmental Sciences
Research subject
Atmospheric Sciences and Oceanography
URN: urn:nbn:se:su:diva-120094DOI: 10.1002/2015GL064373ISI: 000358691300064OAI: diva2:851156
Available from: 2015-09-03 Created: 2015-09-01 Last updated: 2016-10-06Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Tjernström, MichaelSedlar, JosephSotiropoulou, Georgia
By organisation
Department of Meteorology
In the same journal
Geophysical Research Letters
Earth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 145 hits
ReferencesLink to record
Permanent link

Direct link