DOI: 10.1038/ngeo1661
论文题名: The impact of polar mesoscale storms on northeast Atlantic Ocean circulation
作者: Condron A. ; Renfrew I.A.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2013
卷: 6, 期: 1 起始页码: 34
结束页码: 37
语种: 英语
Scopus关键词: air-sea interaction
; climate prediction
; deep water
; meridional circulation
; mesoscale eddy
; meteorology
; numerical model
; sea ice
; storm
; Arctic
; Arctic Ocean
; Atlantic Ocean
; Atlantic Ocean (Northeast)
; Denmark Strait
; Norwegian Sea
英文摘要: Atmospheric processes regulate the formation of deep water in the subpolar North Atlantic Ocean and hence influence the large-scale ocean circulation. Every year thousands of mesoscale storms, termed polar lows, cross this climatically sensitive region of the ocean. These storms are often either too small or too short-lived to be captured in meteorological reanalyses or numerical models. Here we present simulations with a global, eddy-permitting ocean/sea-ice circulation model, run with and without a parameterization of polar lows. The parameterization reproduces the high wind speeds and heat fluxes observed in polar lows as well as their integrated effects, and leads to increases in the simulated depth, frequency and area of deep convection in the Nordic seas, which in turn leads to a larger northward transport of heat into the region, and southward transport of deep water through Denmark Strait. We conclude that polar lows are important for the large-scale ocean circulation and should be accounted for in short-term climate predictions. Recent studies predict a decrease in the number of polar lows over the northeast Atlantic in the twenty-first century that would imply a reduction in deep convection and a potential weakening of the Atlantic meridional overturning circulation. © 2013 Macmillan Publishers Limited. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106914
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: Climate System Research Center, Department of Geosciences, University of Massachusetts, Amherst, MA 01003-9297, United States; School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom
Recommended Citation:
Condron A.,Renfrew I.A.. The impact of polar mesoscale storms on northeast Atlantic Ocean circulation[J]. Nature Geoscience,2013-01-01,6(1)