气候变化领域集成服务门户(CCPortal): Assessment of surface pressure between Zhongshan and Dome A in East Antarctica from different meteorological reanalyses

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DOI	10.1657/1938-4246-46.3.669
	Assessment of surface pressure between Zhongshan and Dome A in East Antarctica from different meteorological reanalyses
	Xie, Aihong; Allison, Ian; Xiao, Cunde; Wang, Shimeng; Ren, Jiawen; Qin, Dahe
发表日期	2014
ISSN	1523-0430
起始页码	669
结束页码	681
卷号	46 期号:3
英文摘要	The accuracy of daily mean surface pressure from five meteorological reanalyses is assessed against in situ observations from automatic weather stations in East Antarctica for 2005 to 2008. The in situ observations are from Zhongshan, LGB69, EAGLE, and Dome A. The five reanalyses all explain more than 87% of the average variance and have annual root mean square errors between 15 hPa and 45 hPa. The ERA Interim reanalysis performs best against both criteria. The NCEP-1, NCEP-2, and 20CRv2 reanalyses have negative biases of 29.7 hPa, 25.9 hPa, and 11.1 hPa, respectively, while ERA Interim and JCDAS have positive biases of 4.9 hPa and 14.9 hPa. The reanalyses do not show obvious seasonal differences. The errors generally tend to decrease from the coast to the interior of the East Antarctic ice sheet, although there are regional differences between the performance of the different reanalyses. ERA Interim is superior to other reanalyses, probably because of its 4D assimilation scheme, which is strongly guided by satellite observations. The three NCEP reanalyses perform worst; their assimilation scheme is more constrained by limited observations and 20CRy2 has less input data, assimilating only surface pressure observations. Despite deficiencies and limitations, the reanalyses are still powerful tools for climate studies in the Antarctic region. However, more in situ observations are required, especially from the vast interior of Antarctica.
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
WOS类目	Environmental Sciences ; Geography, Physical
来源期刊	ARCTIC ANTARCTIC AND ALPINE RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158588
作者单位	Xie, AH (corresponding author), Chinese Acad Sci, Cold & Arid Regions Environm & Engn Res Inst, State Key Lab Cryospher Sci, 320 Donggang Western Rd, Lanzhou 730000, Gansu, Peoples R China.
推荐引用方式 GB/T 7714	Xie, Aihong,Allison, Ian,Xiao, Cunde,et al. Assessment of surface pressure between Zhongshan and Dome A in East Antarctica from different meteorological reanalyses[J],2014,46(3).
APA	Xie, Aihong,Allison, Ian,Xiao, Cunde,Wang, Shimeng,Ren, Jiawen,&Qin, Dahe.(2014).Assessment of surface pressure between Zhongshan and Dome A in East Antarctica from different meteorological reanalyses.ARCTIC ANTARCTIC AND ALPINE RESEARCH,46(3).
MLA	Xie, Aihong,et al."Assessment of surface pressure between Zhongshan and Dome A in East Antarctica from different meteorological reanalyses".ARCTIC ANTARCTIC AND ALPINE RESEARCH 46.3(2014).