DOI: 10.1002/2015GL064373
论文题名: Warm-air advection, air mass transformation and fog causes rapid ice melt
作者: Tjernström M. ; Shupe M.D. ; Brooks I.M. ; Persson P.O.G. ; Prytherch J. ; Salisbury D.J. ; Sedlar J. ; Achtert P. ; Brooks B.J. ; Johnston P.E. ; Sotiropoulou G. ; Wolfe D.
刊名: Geophysical Research Letters
ISSN: 0094-9474
EISSN: 1944-9205
出版年: 2015
卷: 42, 期: 13 起始页码: 5594
结束页码: 5602
语种: 英语
英文关键词: Arctic
; fog
; sea-ice melt
; surface energy balance
; surface inversion
; warm-air advection
Scopus关键词: Advection
; Fog
; Heat flux
; Interfacial energy
; Sea ice
; Arctic
; High pressure system
; Ice melts
; Sea ice concentration
; Surface energy fluxes
; Temperature inversions
; Turbulent heat fluxes
; Warm air
; Ice
; advection
; air mass
; air-sea interaction
; energy balance
; fog
; heat flux
; inversion layer
; longwave radiation
; satellite imagery
; sea ice
; solar radiation
; surface energy
; warm front
; Arctic Ocean
; Bering Strait
; East Siberian Sea
英文摘要: 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 ∼15Wm-2 for a week. Satellite images before and after the episode show sea-ice concentrations decreasing from > 90% 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. Key Points The importance of both large-scale dynamics and local feedback for sea-ice melt The location of extra melt near the ice edge, due to the air-mass transformation The role of clouds, longwave radiation and turbulent heat flux for sea-ice melt. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938209822&doi=10.1002%2f2015GL064373&partnerID=40&md5=24bb711584954b454367fef5b8835c08
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9089
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Meteorology, Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
Recommended Citation:
Tjernström M.,Shupe M.D.,Brooks I.M.,et al. Warm-air advection, air mass transformation and fog causes rapid ice melt[J]. Geophysical Research Letters,2015-01-01,42(13).