干旱区生态环境知识资源中心(Arid): 我国东,西部夏季水汽输送特征及其差异

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	我国东,西部夏季水汽输送特征及其差异
其他题名	Characteristics of the Summertime Water Vapor Transports over the Eastern Part of China and Those over the Western Part of China and Their Difference
	黄荣辉; 陈际龙
来源期刊	大气科学
ISSN	1006-9895
出版年	2010
卷号	34 期号:6 页码:1035-1045
中文摘要	本文利用ERA-40再分析每日资料分析了我国东部季风区与西北干旱--半干旱区夏季1971~2000年气候平均的水汽输送特征及其差异,分析结果表明我国东部季风区与西北干旱--半干旱区夏季气候平均的水汽输送特征有明显的差异.由于亚洲夏季风从孟加拉湾,南海和热带西太平洋输送大量水汽到我国东部季风区,故在东部季风区夏季经向水汽输送通量比纬向水汽输送通量大.而西北干旱--半干旱区受中纬度西风带的影响,夏季纬向水汽输送通量比经向水汽输送通量大,且此区域夏季无论纬向或者经向水汽输送通量均比东部季风区的水汽输送通量小一量级.并且,分析结果还表明:我国东部季风区由于湿度大,故夏季水汽输送通量的散度不仅依赖于湿度平流,而且依赖于风场的辐合,辐散,而西北干旱--半干旱区夏季水汽输送通量的散度主要依赖于湿度平流.此外,分析结果还表明了我国东部季风区的水分平衡与西北干旱--半干旱区的水分平衡也有明显的不同
英文摘要	Characteristics of the climatological mean summertime water vapor transports for 1971-2000 over the monsoon region of eastern China and those over the arid and semi-arid regions of Northeast China and their differences are analyzed by using the daily data of the ERA-40 reanalysis. The results show that there are some obvious differences between the summertime water vapor transports over the monsoon region of East China and those over the arid and semi-arid regions of Northwest China. Since a large amount of water vapor is transported by the Asian summer monsoon flow from the Bay of Bengal, the South China Sea, and the tropical western Pacific into the monsoon region of eastern China, the meridional water vapor transport fluxes are larger than the zonal water vapor transport fluxes in the monsoon region of eastern China in summer. But influenced by the westerly zone over midlatitudes, the summertime zonal water vapor transport fluxes are larger than the meridional water vapor transportfluxes in the arid and semi-arid regions of Northwest China, and either zonal or meridional water vapor transport fluxes in the region are one order of magnitude smaller than those in the monsoon region of East China. Moreover, the results show that the divergence of the summertime water vapor transport fluxes in the monsoon region of East China depends on not only the moisture advection, but also the convergence or divergence of wind field over this region, but it mainly depends on the moisture advection in the arid and semi-arid regions of Northwest China. Besides, the results also show that the water balance in the monsoon region of eastern China is obviously different from that in the arid and semi-arid regions of Northwest China
中文关键词	水汽输送 ; 通量 ; 季风区 ; 干旱--半干旱区
英文关键词	water vapor transport flux monsoon region arid and semi-arid regions
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:4051130
来源机构	中国科学院大气物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224778
作者单位	中国科学院大气物理研究所季风系统研究中心, 北京 100190, 中国
推荐引用方式 GB/T 7714	黄荣辉,陈际龙. 我国东,西部夏季水汽输送特征及其差异[J]. 中国科学院大气物理研究所,2010,34(6):1035-1045.
APA	黄荣辉,&陈际龙.(2010).我国东,西部夏季水汽输送特征及其差异.大气科学,34(6),1035-1045.
MLA	黄荣辉,et al."我国东,西部夏季水汽输送特征及其差异".大气科学 34.6(2010):1035-1045.