DOI: 10.1175/JCLI-D-18-0216.1
Scopus记录号: 2-s2.0-85060533539
论文题名: Arctic summer airmass transformation, surface inversions, and the surface energy budget
作者: Tjernström M. ; Shupe M.D. ; Brooks I.M. ; Achtert P. ; Prytherch J. ; Sedlar J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2019
卷: 32, 期: 3 起始页码: 769
结束页码: 789
语种: 英语
英文关键词: Advection
; Arctic
; Clouds
; Inversions
; Sea ice
; Surface fluxes
Scopus关键词: Advection
; Budget control
; Clouds
; Interfacial energy
; Moisture
; Sea ice
; Arctic
; Inversions
; Long-wave radiation
; Surface energy budget
; Surface flux
; Surface heat fluxes
; Surface temperatures
; Turbulent heat fluxes
; Heat flux
英文摘要: During the Arctic Clouds in Summer Experiment (ACSE) in summer 2014 a weeklong period of warm-air advection over melting sea ice, with the formation of a strong surface temperature inversion and dense fog, was observed. Based on an analysis of the surface energy budget, we formulated the hypothesis that, because of the airmass transformation, additional surface heating occurs during warm-air intrusions in a zone near the ice edge. To test this hypothesis, we explore all cases with surface inversions occurring during ACSE and then characterize the inversions in detail. We find that they always occur with advection from the south and are associated with subsidence. Analyzing only inversion cases over sea ice, we find two categories: one with increasing moisture in the inversion and one with constant or decreasing moisture with height. During surface inversions with increasing moisture with height, an extra 10-25 W m-2 of surface heating was observed, compared to cases without surface inversions; the surface turbulent heat flux was the largest single term. Cases with less moisture in the inversion were often cloud free and the extra solar radiation plus the turbulent surface heat flux caused by the inversion was roughly balanced by the loss of net longwave radiation. © 2019 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117230
Appears in Collections: 气候变化与战略
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Recommended Citation:
Tjernström M.,Shupe M.D.,Brooks I.M.,et al. Arctic summer airmass transformation, surface inversions, and the surface energy budget[J]. Journal of Climate,2019-01-01,32(3)