干旱区生态环境知识资源中心(Arid): 新疆降水与环流场演变研究

Arid

	新疆降水与环流场演变研究
其他题名	Study on the Change of Precipitation and General Circulation in Xinjiang
	王娇 1; 任宜勇 2
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2005
卷号	22 期号:3 页码:326-331
中文摘要	通过分析南、北疆地区近50 a来的降水演变特征,将南、北疆地区降水多寡典型年份对应的 500 hPa高度场和海平面气压场的距平进行合成,讨论了多雨和少雨期大气环流的气候背景特征.结果表明,近20多年南、北疆降水较20世纪60-70年代均有显著增加.南、北疆夏季降水与大气环流之间亦存在一定的联系,尤其是乌拉尔山高压脊的增强明显有利于南、北疆降水.
英文摘要	Located in the hinterland of Eurasia, Xinjiang is far away from oceans, it is surrounded by high mountains and is a well-known arid and semiarid region, and its precipitation is significantly less than that in other provinces and autonomous regions. According to the observation data, however, the climate change in Xinjiang has shifted from warming-drying type towards warming-wetting type since the late-1980s, which is re-flected by the significant increase of precipitation, shrinkage of modern glaciers, increase of runoff volumes of the rivers, enlargement of water areas of the lakes, rise of groundwater level, and improvement of natural vege-tation status. In this paper, the change of precipitation in south Xinjiang and north Xinjiang is analyzed, the anomalies of 500 hPa and sea-level air-pressure fields about precipitation are composed, and the climatic back-ground characteristics of general circulation are discussed. The results are as follows: (1) Precipitation in both south Xinjiang and north Xinjiang was slowly increased during the period of 1951 -2000, and the increase trend has been more significantly since recent 20 years; (2) The monthly precipitation in south Xinjiang in February, May, November and December during the period of 1978 - 1998 was reduced than that during the period of 1956 - 1976, and the monthly precipitation in other months was increased, especially in June; the monthly pre-cipitation in north Xinjiang in February, March April and August during the period of 1978 - 1998 was reduced than that during the period of 1956 - 1976, and the monthly precipitation in other months was increased, espe-cially in October; (3) The enhancement of the Ural wedge is advantageous for the increase of precipitation in both south Xinjiang and north Xinjiang; (4) The increase of the sea-level air pressure in the regions near the U-ral Mountains is advantageous for the increase of precipitation in both south Xinjiang and north Xinjiang.
中文关键词	新疆 ; 降水量 ; 环流场 ; 气候背景
英文关键词	Xinjiang precipitation change of general circulation composition analysis
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:2018301
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206237
作者单位	1.兰州大学,大气科学学院, 兰州, 甘肃 730000, 中国; 2.新疆气象局, 乌鲁木齐, 新疆 830002, 中国
推荐引用方式 GB/T 7714	王娇,任宜勇. 新疆降水与环流场演变研究[J]. 兰州大学,2005,22(3):326-331.
APA	王娇,&任宜勇.(2005).新疆降水与环流场演变研究.干旱区研究,22(3),326-331.
MLA	王娇,et al."新疆降水与环流场演变研究".干旱区研究 22.3(2005):326-331.