globalchange  > 气候减缓与适应
DOI: 10.1175/JCLI-D-17-0622.1
Scopus记录号: 2-s2.0-85047061962
论文题名:
Southeast greenland winter precipitation strongly linked to the Icelandic Low position
作者: Berdahl M.; Rennermalm A.; Hammann A.; Mioduszweski J.; Hameed S.; Tedesco M.; Stroeve J.; Mote T.; Koyama T.; McConnell J.R.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期:11
起始页码: 4483
结束页码: 4500
语种: 英语
英文关键词: Arctic ; Atmosphere ; North Atlantic Oscillation ; Regional models ; Snow cover ; Surface observations
Scopus关键词: Atmospheric pressure ; Catchments ; Earth atmosphere ; Glaciers ; Ice ; Sea level ; Snow ; Weather information services ; Arctic ; North Atlantic oscillations ; Regional model ; Snow covers ; Surface observation ; Climate models ; atmospheric pressure ; climate modeling ; ice sheet ; moisture transfer ; North Atlantic Oscillation ; observational method ; precipitation (climatology) ; snow cover ; winter ; Arctic ; Arctic ; Atlantic Ocean ; Atlantic Ocean (North) ; Greenland ; Greenland Ice Sheet
英文摘要: Greenland's largest precipitation flux occurs in its southeast (SE) region during the winter, controlled primarily by easterly winds and frequent cyclogenesis in the North Atlantic. Several studies have attempted to link SE Greenland precipitation to the North Atlantic Oscillation (NAO) but results are inconsistent. This work uses reanalysis, automatic weather station data, and regional climate model output to show that the east-west position of the Icelandic low is a better predictor of SE Greenland precipitation (average correlation of r = -0.48 in DJF) than climate indices such as the NAO (r = -0.06 in DJF). In years when the Icelandic low is positioned extremely west, moisture transport increases up to ~40% (or up to 40 kg m-1 s-1) off the SE Greenland coast compared to when the low is in an extreme east position. Furthermore, in years when the Icelandic low is positioned extremely west, storm track density and intensity increase just off the SE coast of Greenland. Thus, the Icelandic low's longitudinal position dominates SE Greenland ice sheet's wintertime precipitation, a positive term in the ice sheet mass balance. Given SE Greenland's importance in the overall ice sheet mass balance, the position of the Icelandic low is therefore important for making projections of future sea level. © 2018 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111510
Appears in Collections:气候减缓与适应

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作者单位: Department of Geography, Rutgers, The State University of New Jersey, Piscataway, NJ, United States; Center for Climatic Research, University of Wisconsin-Madison, Madison, WI, United States; School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, United States; Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States; NASA Goddard Institute of Space Studies, New York, NY, United States; National Snow and Ice Data Center, University of Colorado, Boulder, CO, United States; Centre for Polar Observation and Modelling, University College London, London, United Kingdom; Department of Geography, University of Georgia, Athens, GA, United States; Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, United States; Desert Research Institute, Reno, NV, United States; Centro de Estudios Avanzados en Zonas áridas, La Serena, Chile; Computational Physics and Methods (CCS-2), Los Alamos National Laboratory, Los Alamos, NM, United States

Recommended Citation:
Berdahl M.,Rennermalm A.,Hammann A.,et al. Southeast greenland winter precipitation strongly linked to the Icelandic Low position[J]. Journal of Climate,2018-01-01,31(11)
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