干旱区生态环境知识资源中心(Arid): 河西走廊春季降水的空间异常分布及年代际变化

Arid

	河西走廊春季降水的空间异常分布及年代际变化
其他题名	Abnormal Spatial Distribution of Spring Precipitation and Its Decadal Variability in the Hexi Corridor in the Arid Area of Northwest China
	刘洪兰 1; 张强1 ; 王胜 2; 郭俊琴 3; 杨寰 4
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2014
卷号	34 期号:5 页码:1386-1392
中文摘要	利用河西走廊19个气象站建站至2012年35月降水量资料,分析了河西走廊春季降水的基本气候特征;通过EOF、REOF、小波分析等方法,对河西走廊春季降水的时空特性进行了研究,用Mann-Kendall检验法检验河西走廊春季降水序列是否存在突变现象。结果表明,河西走廊春季降水空间分布极不均匀,其空间分布特征是东南部为多雨区,西北部为少雨区。河西走廊春季降水在第一空间尺度上为全区一致,在第二空间尺度上可分为2个自然气候区,在第三空间尺度上可分为5个自然气候区。从年代际变化来看,21世纪初10年是近半个世纪来降水最多的10年,20世纪70年代是降水最少的10年;河西走廊春季降水的年际变化十分显著,降水最多的年份是最少年份的6倍多。19612012年间河西走廊春季降水发生了明显的突变:1985年出现了一次趋于增多的突变。3年的短周期和19年的长周期是其主要周期。
英文摘要	Using the precipitation data of 19 meteorological stations in the Hexi Corridor through 2012,we analyzed the climatic character of spring precipitation.EOF,REOF and power spectrum method were used to research the spatial and temporal characteristics of spring precipitation.Whether there was mutation in the spring precipitation sequence was tested by Mann-Kendall way.The results showed that the spatial distribution of spring precipitation in the Hexi Corridor was extremely uneven,the rainy area was located in the southeast,and the less rain area was located in the northwest.The spring precipitation was consistent in the entire region at the first space scale,and two natural precipitation zones at the second spatial scale,and five natural precipitation zones at the third spatial scale.The 2010s was a decade with the most precipitation for nearly half a century.The precipitation was the least during 1970s.The annual variability of the spring precipitation was significant in the Hexi Corridor.The year with the most precipitation was 6 times more than the least year.There was obvious mutation in 1985 for the spring precipitation in the Hexi Corridor from1961 to 2012.Short period of 3 years and long period of 19 years were the main cycle.
中文关键词	春季降水 ; 时空分布 ; 500hPa高度 ; 河西走廊
英文关键词	spring precipitation spatiotemporal distribution 500 hPa Hexi Corridor
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:5242464
来源机构	中国气象局兰州干旱气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232228
作者单位	1.中国气象局兰州干旱气象研究所, 甘肃省干旱气候变化与减灾重点实验室;;中国气象局干旱气候变化与减灾重点实验室, 兰州, 甘肃 730020, 中国; 2.肃北县气象局, 肃北, 甘肃 736300, 中国; 3.西北区域气候中心, 兰州, 甘肃 730020, 中国; 4.张掖市气象局, 张掖, 甘肃 734000, 中国
推荐引用方式 GB/T 7714	刘洪兰,张强,王胜,等. 河西走廊春季降水的空间异常分布及年代际变化[J]. 中国气象局兰州干旱气象研究所,2014,34(5):1386-1392.
APA	刘洪兰,张强,王胜,郭俊琴,&杨寰.(2014).河西走廊春季降水的空间异常分布及年代际变化.中国沙漠,34(5),1386-1392.
MLA	刘洪兰,et al."河西走廊春季降水的空间异常分布及年代际变化".中国沙漠 34.5(2014):1386-1392.