DOI: 10.1007/s00382-014-2213-6
Scopus记录号: 2-s2.0-84939873439
论文题名: Precipitation pathways for five new ice core sites in Ellsworth Land, West Antarctica
作者: Thomas E.R. ; Bracegirdle T.J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 44, 期: 2017-07-08 起始页码: 2067
结束页码: 2078
语种: 英语
英文关键词: Antarctica
; Back trajectories
; Climate variability
; Ice cores
; Precipitation
英文摘要: Ice cores provide a wealth of information about past climate and atmospheric circulation however a good understanding of the precipitation patterns, potential source regions and transport pathways is essential in their interpretation. Here we investigate the precipitation pathways for a transect of five new ice cores drilled in the southern Antarctic Peninsula and Ellsworth Land. We utilize in situ observations from automatic weather stations to confirm that the European Centre for Medium-Range Weather Forecasts ERA-Interim reanalysis data adequately captures annual and sub-annual variability, with evidence of a slight cold bias in the 2 m temperatures. Back trajectory analysis, from the British Atmospheric Data Centre trajectory service, reveals that warm and snowy years are associated with air masses that originate (5 days before reaching the site) from the Amundsen-Bellingshausen Sea, while cold and dry years are associated with air masses from the Antarctic continent. There is a clear seasonal migration in the trajectories at each site, reflecting the east to west migration of the Amundsen Sea Low, known to have a strong influence on climate in this region. © 2014, Springer-Verlag Berlin Heidelberg. 资助项目: NERC, Natural Environment Research Council
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54141
Appears in Collections: 过去全球变化的重建
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作者单位: British Antarctic Survey, High Cross, Cambridge, United Kingdom
Recommended Citation:
Thomas E.R.,Bracegirdle T.J.. Precipitation pathways for five new ice core sites in Ellsworth Land, West Antarctica[J]. Climate Dynamics,2015-01-01,44(2017-07-08)