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contributor authorTjernström, Michael
contributor authorShupe, Matthew D.
contributor authorBrooks, Ian M.
contributor authorAchtert, Peggy
contributor authorPrytherch, John
contributor authorSedlar, Joseph
date accessioned2019-09-22T09:04:18Z
date available2019-09-22T09:04:18Z
date copyright11/29/2018 12:00:00 AM
date issued2018
identifier otherJCLI-D-18-0216.1.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4262737
description abstractDuring 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.
publisherAmerican Meteorological Society
titleArctic Summer Airmass Transformation, Surface Inversions, and the Surface Energy Budget
typeJournal Paper
journal volume32
journal issue3
journal titleJournal of Climate
identifier doi10.1175/JCLI-D-18-0216.1
journal fristpage769
journal lastpage789
treeJournal of Climate:;2018:;volume 032:;issue 003
contenttypeFulltext


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