气候变化领域集成服务门户(CCPortal): Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station

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	Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station
	Qin, DH; Xiao, CD; Ian, A; Bian, LG; Ren, JW; Yan, M
发表日期	2004
ISSN	0260-3055
起始页码	181
结束页码	187
卷号	39
英文摘要	The net surface snow accumulation on the Antarctic ice sheet is determined by a combination of precipitation, sublimation and wind redistribution. We present a 1 year record of hourly snow-height measurements that shows its seasonal variability. The measurements were made with an ultrasonic sensor mounted on an automatic weather station (AWS) installed at LGB69, Princess Elizabeth Land, Antarctica (70.835 degrees S, 77.075 degrees E; 1850 m a.s.l.). The average accumulation at this site is approximately 0.70 m snow a(-1). Throughout the winter, between April and September, there was little change in surface snow height. The strongest accumulation occurred during the period October-March, with four episodic increases occurring during 2002. These episodic events coincided with obvious humidity 'pulses' and decreases of incoming solar radiation as recorded by the AWS. Observations of the total cloud amount at Davis station, 160 km north-northeast of LGB69, showed good correlation with major accumulation events recorded at LGB69. There was an obvious anticorrelation between the lowest cloud height at Davis and the daily accumulation rate at LGB69. Although there was no correlation over the total year between wind speed and accumulation at LGB69, large individual accumulation events are associated with episodes of strong wind. Strong accumulation events at LGB69 are associated with major storms in the region and inland transport of moist air masses from the coast.
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
来源期刊	ANNALS OF GLACIOLOGY, VOL 39, 2004
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158719
作者单位	Qin, DH (corresponding author), Chinese Acad Sci, Lab Ice Core & Cold Reg Environm, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Qin, DH,Xiao, CD,Ian, A,et al. Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station[J],2004,39.
APA	Qin, DH,Xiao, CD,Ian, A,Bian, LG,Ren, JW,&Yan, M.(2004).Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station.ANNALS OF GLACIOLOGY, VOL 39, 2004,39.
MLA	Qin, DH,et al."Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station".ANNALS OF GLACIOLOGY, VOL 39, 2004 39(2004).