干旱区生态环境知识资源中心(Arid): 新疆北部汛期降水的变化特征

Arid

	新疆北部汛期降水的变化特征
其他题名	Analysis on Variation of Precipitation in Flood Season in North Xinjiang
	赵勇 1; 黄丹青 2; 杨青 1
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2012
卷号	29 期号:1 页码:35-40
中文摘要	基于新疆北部1961-2007年43站逐日降水资料,分析汛期降水的变化特征。结果表明:小雨、中雨和大雨的降水日数和降水强度均呈增加和增强的趋势,大雨日数和强度变化显著,尤其在2000年以后。进一步的研究发现,湿时期(1987-2007年)相对干时期(1961-1986年),新疆北部汛期的总降水量均是增多的,北疆西北部降水量的增多主要是由于小雨和中雨的增加所致,而天山山区及其北麓,伊犁河谷地区降水量的增多是由大雨增加主导。极端干旱事件呈减少趋势,尤其在近10 a处在低发期,极端湿润事件呈增多趋势。
英文摘要	It was pointed out by IPCCs fourth assessment report in 2007 that precipitation in many regions between 30° N and 80° N was in an obvious increase trend.With global warming,the extreme climate events occurred frequently in recent 20 years.Xinjiang is famous by its arid and semiarid regions,and precipitation occurs mainly in rainy season.Many research achievements showed that it had become warmer and wetter since 1987,but it needs to be further studied.In this paper,the variation of precipitation in flood season was analyzed based on the daily precipitation data from 43 meteorological stations in north Xinjiang during the period of 1961-2007.The results showed that the occurring days and intensity of slight,moderate and heavy precipitation in north Xinjiang were all in an increase trend,especially that of heavy precipitation after 2000.The analyzed results indicated that the total precipitation in flood season in north Xinjiang increased during the rainy period(1987-2007) compared with that during the dry period(1961-1986),and the precipitation increase was mainly caused by the increase of slight and moderate precipitation in northwest Xinjiang,but by heavy precipitation in the Tianshan Mountain and its northern piedmont as well as the Yili Valley.The long dry events were in a decreasing trend,especially in recent 10 years,but the long rainy ones were in an increasing trend.
中文关键词	降水日数 ; 降水强度 ; 汛期 ; 新疆
英文关键词	precipitation days precipitation intensity flood season Xinjiang
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:4438463
来源机构	中国气象局乌鲁木齐沙漠气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228023
作者单位	1.中国气象局乌鲁木齐沙漠气象研究所, 乌鲁木齐, 新疆 830002, 中国; 2.南京大学大气科学学院, 南京, 江苏 210093, 中国
推荐引用方式 GB/T 7714	赵勇,黄丹青,杨青. 新疆北部汛期降水的变化特征[J]. 中国气象局乌鲁木齐沙漠气象研究所,2012,29(1):35-40.
APA	赵勇,黄丹青,&杨青.(2012).新疆北部汛期降水的变化特征.干旱区研究,29(1),35-40.
MLA	赵勇,et al."新疆北部汛期降水的变化特征".干旱区研究 29.1(2012):35-40.