气候变化领域集成服务门户(CCPortal): Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability

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DOI	10.5194/tc-11-2595-2017
	Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability
	Fyke J.; Lenaerts J.T.M.; Wang H.
发表日期	2017
ISSN	19940416
卷号	11 期号:6
英文摘要	Annually averaged precipitation in the form of snow, the dominant term of the Antarctic Ice Sheet surface mass balance, displays large spatial and temporal variability. Here we present an analysis of spatial patterns of regional Antarctic precipitation variability and their impact on integrated Antarctic surface mass balance variability simulated as part of a preindustrial 1800-year global, fully coupled Community Earth System Model simulation. Correlation and composite analyses based on this output allow for a robust exploration of Antarctic precipitation variability. We identify statistically significant relationships between precipitation patterns across Antarctica that are corroborated by climate reanalyses, regional modeling and ice core records. These patterns are driven by variability in large-scale atmospheric moisture transport, which itself is characterized by decadal- to centennial-scale oscillations around the long-term mean. We suggest that this heterogeneity in Antarctic precipitation variability has a dampening effect on overall Antarctic surface mass balance variability, with implications for regulation of Antarctic-sourced sea level variability, detection of an emergent anthropogenic signal in Antarctic mass trends and identification of Antarctic mass loss accelerations.
学科领域	air-sea interaction; anthropogenic effect; atmospheric moisture; atmospheric transport; climate modeling; ice core; precipitation (climatology); sea level change; snow cover; spatial variation; temporal variation; Antarctic Ice Sheet; Antarctica
语种	英语
scopus关键词	air-sea interaction; anthropogenic effect; atmospheric moisture; atmospheric transport; climate modeling; ice core; precipitation (climatology); sea level change; snow cover; spatial variation; temporal variation; Antarctic Ice Sheet; Antarctica
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119309
作者单位	Los Alamos National Laboratory, Los Alamos, NM, United States; Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, United States; Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, Netherlands; Pacific Northwest National Laboratory, Richland, WA, United States
推荐引用方式 GB/T 7714	Fyke J.,Lenaerts J.T.M.,Wang H.. Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability[J],2017,11(6).
APA	Fyke J.,Lenaerts J.T.M.,&Wang H..(2017).Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability.Cryosphere,11(6).
MLA	Fyke J.,et al."Basin-scale heterogeneity in Antarctic precipitation and its impact on surface mass variability".Cryosphere 11.6(2017).