Role of snow depth in spring of Tibetan Plateau in onset of South China Sea summer monsoon

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Role of snow depth in spring of Tibetan Plateau in onset of South China Sea summer monsoon
	Yu Le-Jiang 1,2,3,4; Hu Dun-Xin 1,2
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2008-11-01
卷号	51 期号:6 页码:1682-1694
关键词	Tibetan Plateau Snow Depth South China Sea Summer Monsoon Enso
ISSN号	0001-5733
文献子类	Article
英文摘要	The role of snow depth of Tibetan Plateau in the onset of South China Sea summer monsoon and the influence of ENSO on snow depth of Tibetan Plateau are investigated with use of data from ECMWF reanalysis and NCEP/NCAR reanalysis. The results are as follows: (1) The snow depth data from ECMWF reanalysis are tested and reliable, and can be used to study the influence of snow depth of Tibetan Plateau on the onset of South China Sea summer monsoon; (2) Anomaly of snow depth of Tibetan Plateau causes anomaly in air temperature and its contrast between the Indian Ocean and the continent resulting in easterly wind anomaly over 500 hPa and hence as well as in the atmospheric circulation in the lower layer. For the year of negative anomaly of snow depth a westerly wind anomaly with a cyclone pair takes place, while for positive anomaly of snow depth an easterly anomaly occurs with an anticyclone pair; (3) While positive anomaly of SST occurs in the eastern Pacific Ocean, positive anomaly of air pressure also takes place over the eastern Indian Ocean and the South China Sea, causing stronger meridional pressure gradient between the ocean and continent and then westerly wind anomaly. At the same time, the atmospheric pressure increases in the northern Tibetan Plateau, northerly wind gets stronger, and subtropical front strengthens. All of these are favorable for snowfall over Tibetan Plateau.; The role of snow depth of Tibetan Plateau in the onset of South China Sea summer monsoon and the influence of ENSO on snow depth of Tibetan Plateau are investigated with use of data from ECMWF reanalysis and NCEP/NCAR reanalysis. The results are as follows: (1) The snow depth data from ECMWF reanalysis are tested and reliable, and can be used to study the influence of snow depth of Tibetan Plateau on the onset of South China Sea summer monsoon; (2) Anomaly of snow depth of Tibetan Plateau causes anomaly in air temperature and its contrast between the Indian Ocean and the continent resulting in easterly wind anomaly over 500 hPa and hence as well as in the atmospheric circulation in the lower layer. For the year of negative anomaly of snow depth a westerly wind anomaly with a cyclone pair takes place, while for positive anomaly of snow depth an easterly anomaly occurs with an anticyclone pair; (3) While positive anomaly of SST occurs in the eastern Pacific Ocean, positive anomaly of air pressure also takes place over the eastern Indian Ocean and the South China Sea, causing stronger meridional pressure gradient between the ocean and continent and then westerly wind anomaly. At the same time, the atmospheric pressure increases in the northern Tibetan Plateau, northerly wind gets stronger, and subtropical front strengthens. All of these are favorable for snowfall over Tibetan Plateau.
学科主题	Geochemistry & Geophysics
语种	英语
WOS记录号	WOS:000261313500008
公开日期	2010-12-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/5249]
专题	海洋研究所_海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Wave, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 4.Polar Res Inst China, Shanghai 200136, Peoples R China
推荐引用方式 GB/T 7714	Yu Le-Jiang,Hu Dun-Xin. Role of snow depth in spring of Tibetan Plateau in onset of South China Sea summer monsoon[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2008,51(6):1682-1694.
APA	Yu Le-Jiang,&Hu Dun-Xin.(2008).Role of snow depth in spring of Tibetan Plateau in onset of South China Sea summer monsoon.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,51(6),1682-1694.
MLA	Yu Le-Jiang,et al."Role of snow depth in spring of Tibetan Plateau in onset of South China Sea summer monsoon".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 51.6(2008):1682-1694.