干旱区生态环境知识资源中心(Arid): 青藏高原年降水量的气候变化及其异常类型研究

Arid

	青藏高原年降水量的气候变化及其异常类型研究
其他题名	Studies on climatic variation and anomaly types of the annual precipitation over Qinghai-Xizang plateau
	朱西德; 李林; 秦宁生; 周陆生; 江青春
来源期刊	气象科学
ISSN	1009-0827
出版年	2003
卷号	23 期号:4 页码:452-459
中文摘要	利用青藏高原的80个气象台站近34 a来年降水量资料，采用EOF、REOF、气候趋势线性趋势分析以及累积距平法等方法对青藏高原年降水量的时空分布特征及其异常进行了分析。结果表明：EOF分解的前三个主向量的累积方差贡献占总方差的44.9%，地形特别是高原主体的阻挡和抬升作用对年降水量的空间变化影响显著；年降水量的时间变化在缓慢减少的过程中1982年和1995年发生了2次突变，并经历了减少、增多和再次减少的3个变化阶段；青藏高原年降水量的空间异常类型均可分为高原中东区、高原南部区、高原北部区、高原腹地区和西藏西南区共5个区，其分区主要受地形和低涡的影响较明显。
英文摘要	Temporal and spatial distribution features of the annual precipitaion and its a-nomaly over Qinghai-Xizang Plateau are analyzed with the use of precipitation data in the near 34 years from 80 stations there in combination with those methods such as EOF, RE-OF,, linear trend analysis of climatic trend and cumulative average deviation, etc. The results show that cumulative variance contribution of the first three load vector quantities from EOF resolution accounts ’for 44. 9 percent of the totol. Plateau orographic effects, especially the effects of its obstruction and lifting of the main plateau body,are remarkable on the spatial changes of the annual precipitation. During its slow decreasing changes with the time two jump changes of the annual precipittion occurred in 1982 and 1989 respectively. Also the changes spanned three stages as decreasing, increasing a little and a second decreasing. All spatial anomaly types of the annual precipitation over the plateau can be classified into five areas, such as in the center and east, in the south, in the north, in the plateau hinterland, arid in the southwest of Xizang, and that the dominating influence of the relief and the low-eddy are comparatively marked on this kind of classification.
中文关键词	青藏高原 ; 气候变化 ; 气候异常
英文关键词	FOF REOF Qinghai-Xizang plateau climatic variation climatic anomaly EOF REOF
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:1174798
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204243
作者单位	青海省气候资料中心, 西宁, 青海 810001, 中国
推荐引用方式 GB/T 7714	朱西德,李林,秦宁生,等. 青藏高原年降水量的气候变化及其异常类型研究[J],2003,23(4):452-459.
APA	朱西德,李林,秦宁生,周陆生,&江青春.(2003).青藏高原年降水量的气候变化及其异常类型研究.气象科学,23(4),452-459.
MLA	朱西德,et al."青藏高原年降水量的气候变化及其异常类型研究".气象科学 23.4(2003):452-459.