干旱区生态环境知识资源中心(Arid): 西北区西部夏半年强降水分布与变化特征

Arid

	西北区西部夏半年强降水分布与变化特征
其他题名	Distribution and Change Feature of Intense Precipitation in the West Part of Northwestern China during Summer Half Years
	栾晨 1; 宋敏红 1; 蔡英 1; 钱正安 2
来源期刊	高原气象
ISSN	1000-0534
出版年	2012
卷号	31 期号:3 页码:629-637
中文摘要	利用国家气象信息中心西北区西部104个测站19612007年5-10月逐日降水量资料,分析了近47年该区夏半年强降水的时空分布特征与变化趋势。结果表明:(1)西北区西部强降水日数东多西少。最多出现在半湿润的青海高原东缘,次多出现在半干旱区的天山和祁连山区,位于干旱和极端干旱区的南、北疆盆地边缘及柴达木盆地西部,很少或从未出现过强降水日。(2)更干旱的该区西部比青海高原似更易出现强降水极大值,特别是位于峡谷、山口及冷空气通道的巴仑台、乌鲁木齐、阿合奇、若羌及阿左旗等地。(3)该区强降水日出现的最早时间呈"东、西两头早,中间晚"的格局,而最迟时间则反之。(4)该区强降水日出现频数虽呈增长态势(特别是中天山地区),但增长趋势并不显著。
英文摘要	Utilizing the daily precipitation data of 104 stations in the west part of Northwestern China(W-NWC) from May to October during 1961 to 2007,the temporal and spatial distribution and change tendency of intense rainfall during summer half year of nearly 47 years are analyzed.The results show that:(1) Intense rainfall frequency is more in the east of W-NWC than that in the west.The most intense rainfall days occurs in the east of Qinghai plateau which belongs to sub-humid areas,and the second one occurs in Tianshan Mountains and Qilian Mountains which belongs to semiarid region,and it rarely occurs and even has never occurred in the arid and extreme arid regions including the edge of South and North Xinjiang Basin and the west of Qaidam Basin.(2) It seems to be easier for maximum precipitation to appear in the west of W-NWC where is more arid than Qinghai Plateau,especially in Balguntay,Urumqi,Akqi,Charkhlik and Alxa Left Banner.(3) The earliest date occurred intense rainfall day presents that it is earlier in the east of W-NWC and the west and later in the middle,while the latest one is opposite.(4) Intense rainfall frequency in this region(especially Tianshan Mountains) has a growing trend,but increasing intensity is not obvious.
中文关键词	强降水日 ; 西北区西部 ; 强降水频数 ; 极端雨量 ; 山口地形
英文关键词	The west of Northwestern China Intense rainfall day Intense rainfall frequency Maximum precipitation Terrain of mountain pass
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:4573403
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228163
作者单位	1.中国科学院寒区旱区环境与工程研究所, 中国科学院寒旱区陆面过程和气候变化重点实验室, 兰州, 甘肃 730000, 中国; 2.中国科学院寒区旱区环境与工程研究所, 中国科学院寒旱区陆面过程和气候变化重点实验室;;甘肃省干旱气候变化与减灾重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	栾晨,宋敏红,蔡英,等. 西北区西部夏半年强降水分布与变化特征[J]. 中国科学院西北生态环境资源研究院,2012,31(3):629-637.
APA	栾晨,宋敏红,蔡英,&钱正安.(2012).西北区西部夏半年强降水分布与变化特征.高原气象,31(3),629-637.
MLA	栾晨,et al."西北区西部夏半年强降水分布与变化特征".高原气象 31.3(2012):629-637.