干旱区生态环境知识资源中心(Arid): 中国降水量变化的空间分布特征与东亚夏季风

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	中国降水量变化的空间分布特征与东亚夏季风
其他题名	Spatial patterns of change trend in rainfall of China and the role of East Asia summer monsoon
	张国宏 1; 李智才 1; 宋燕 2; 武永利 1; 王晓丽 3
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2011
卷号	34 期号:1 页码:34-42
中文摘要	利用NCEP/NCAR海平面气压场和中国站点月降水量资料,研究了中国近47 a来的降水量变化空间分布特征及东亚夏季风与中国夏,秋季降水的关系.1961-2007年中国年降水量减少的区域主要在东北,华北,西北东部,西南东部和华南西部,形成一个东北-西南向的带状区域,其余大部为增加趋势,其中陕西北部和四川中南部减少趋势显著,增加趋势显著的地区主要在西部,特别是新疆西北部.冬季降水量中国大部分地区为增加趋势,只有华北和西南的少部分地区为减少趋势;春季降水量青藏高原东部显著增加,陕西南部显著减少;夏季东北,华北和西南地区降水量为减少趋势,东南和西北大部为增加趋势,其中新疆北部和青海北部增加显著;秋季降水量中国的西部大部为增加趋势,东部大部为减少趋势,在甘肃南部和四川东部减少趋势显著.年降水量为增加趋势的区域面积大于减少趋势的区域面积;冬,春,夏季为增加趋势的面积显著地大于减少趋势的面积,其中冬季差异最大,只有秋季减少趋势的面积大于增加趋势的面积.年降水量相对变率低值区主要在西南和华南,高值区主要在新疆南部的塔里木盆地(盆地中有著名的塔克拉玛干沙漠),其次是内蒙古西部的沙漠地带.四个季节的降水量相对变率与年的分布类似.近61 a来东亚夏季风强度分别在20世纪60年代中期和70年代中期出现了两次明显的减弱过程.东亚夏季风与中国夏,秋季的降水量相关明显.东亚夏季风的减弱可能是中国夏季东北,华北和西南地区以及秋季东部地区降水量减少的一个重要原因
英文摘要	On the basis of NCEP/NCAR Reanalysis 2.5°*2.5° monthly mean sea level pressure data and monthly rainfall data of 579 stations in China from National Climate Centre for period from 1961 to 2007, the spatial patterns of change trend in rainfall of China, and the relationships between East Asia summer monsoon and rainfall of China in summer and autumn are investigated by use of trend coefficient, relative variability and irregular domain gridding. Irregular domain gridding method means data is processed by China map boundary file after it is gridded by Kriging to rectangle domain including whole China domain. Results show that Northeast China, North China, eastern part of Northwest China, eastern part of Southwest China, and western part of South China, which form a northeast-southwest belt, present a falling trend, while western and southern part of China present a increasing trend. The falling trend over northern part of Shannxi and the increasing trend over northwest part of Xinjiang are significant. The report of rainfall falling trend in western part of South China, mainly in Guizhou, Guangdong and Hainan province, has no seen in previous literatures, this is a new drought tendency that we must pay attention to. In winter, increasingly tendency appear over most parts of China, only a few parts show falling trend, for example, North China and Southwest China;in spring, eastern area of Qinghai-Tibetan Plateau present a significant increasing trend while southern part of Shannxi present a significant falling tendency;in summer, falling trend can be seen over Northeast China, North China and Southwest China, while rainfall over Southeast China and Northwest China are increasing, and significant level is reached over northern part of Xinjiang and of Qinghai;in autumn, falling trend appears over East China, while increasing trend appears over western area and significant level of falling are reached over southern part of Gansu and eastern area of Sichuan. The rainfall area with increasing trend is greater than that with falling trend from 1961 to 2007;similarly, the rainfall area with increasing trend is greater than that with falling trend in winter, spring and summer, only the area percentage is reverse in autumn. The area of lowest relatively variability is distributed over Southwest China and South China, while the area of highest relatively variability is distributed over southern part of Xinjiang and western part of Inner Mongolia, which all is desert belt included Taklimakan Desert and Badain Jaran Desert;the seasonal distribution is similar;this is a meaningful discovery that highest rainfall relatively variability area is exactly fitted with famous desert belt,we can make use of rainfall relatively variability to predict future potential desert areas, and it is helpful to deal with desertification problem in China, even world. Two significant falling process of East Asia summer monsoon intensity can be seen in the last 61 years, which is in the middle of 1960s and 1970s.The relationships is significant between East Asia summer monsoon and rainfall of China in summer and autumn. The weakening of East Asia summer monsoon intensity may have a significant role in the process of rainfall falled in the regions of Northeast China, North China and Southwest China in summer,as well as East China in autumn
中文关键词	降水趋势 ; 相对变率 ; 东亚夏季风 ; 中国
英文关键词	precipitation trend relative variability East Asia summer monsoon China
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:4145107
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226442
作者单位	1.山西省气候中心, 太原, 山西 030006, 中国; 2.中国气象局培训中心, 北京 100081, 中国; 3.山西省气象科技服务中心, 太原, 山西 030002, 中国
推荐引用方式 GB/T 7714	张国宏,李智才,宋燕,等. 中国降水量变化的空间分布特征与东亚夏季风[J],2011,34(1):34-42.
APA	张国宏,李智才,宋燕,武永利,&王晓丽.(2011).中国降水量变化的空间分布特征与东亚夏季风.干旱区地理,34(1),34-42.
MLA	张国宏,et al."中国降水量变化的空间分布特征与东亚夏季风".干旱区地理 34.1(2011):34-42.