干旱区生态环境知识资源中心(Arid): 2013年夏季内蒙古干旱- 半干旱区两次极端降水事件对比

Arid

	2013年夏季内蒙古干旱- 半干旱区两次极端降水事件对比
其他题名	Two Extreme Rainstorms in the Arid-semiarid Zone of Inner Mongolia in Summer 2013
	宋桂英 1; 李孝泽 2; 江靖 1; 刘林春 1
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2016
卷号	33 期号:4 页码:747-757
中文摘要	2013年夏季,内蒙古中西部干旱- 半干旱区多次出现极端降水事件,引发气象灾害。为探寻其特征及成因,选择6·30、7·14两次典型极端降水事件,从天气尺度系统、中尺度对流系统、热力动力条件、水汽来源等方面进行对比分析,得到以下结论: ①6·30暴雨是华北小高压前的切变线产生; 7·14暴雨是北槽南涡与台风北上共同作用的结果。② 两次暴雨都是中尺度对流复合体(MCS)发展的结果。6·30暴雨突发性强,具有局地特点; 7·14暴雨具有列车效应,持续时间长。③ 两次暴雨水汽来源不同。6·30暴雨水汽来源于南海;7·14暴雨是北槽南涡加上远距离台风输送的结果。④6·30暴雨是高压切变线西侧干、东侧湿,在锋区附近产生上升运动促发不稳定能量释放; 高空干侵入是7·14暴雨的促发机制。⑤ 东亚夏季风偏强,西北太平洋副热带高压脊线位置偏北,是内蒙古中西部干旱- 半干旱区极端降水事件的重要原因。
英文摘要	In summer 2013,there were multiple occurrences of extreme precipitation events in the arid and semiarid zones of Inner Mongolia,thus the meteorological disasters were triggered. In order to investigate their characteristics and causes,the rainstorms occurred on June 30 and July 14 were chosen as two typical extreme precipitation events to analyze. The two processes were compared in terms of synoptic scale systems,mesoscale convective systems,thermal dynamic conditions,water vapor sources,etc. Conclusions are as follows: ① The rainstorm occurred on June 30 was caused by the shear line of north small high pressure,and that occurred on July 14 was jointly affected by a trough over the north,a vortex over the south and a typhoon northward; ② Both of them were caused by the development of mesoscale convective complex (MCS). The rainstorm occurred on June 30 had the characteristics of sudden outburst and occurrence in local area. The rainstorm occurred on July 14 had a train effect and long duration; ③ The water vapor sources of the two rainstorms were different: water vapor of the rainstorm occurred on June 30 was from South China Sea,but the one occurred on July 14 was affected jointly by a trough over the north,a vortex over the south and a typhoon northward; ④ Trigger mechanisms of the two rainstorms were different: the main reasons for the rainstorm occurred on June 30 were that it was dry on the west side of high shear line but wet on the east side,and the unstable energy was released under the upward motion near the frontal zone. Thedry intrusionwas the trigger mechanism of the rainstorm occurred on July 14; ⑤ Summer monsoon is strong in East Asia,and the northwest Pacific subtropical ridge is northward. Both of them are the important reasons resulting in the extreme rainstorms in the arid and semiarid zones in west Inner Mongolia.
中文关键词	干旱- 半干旱区 ; 极端降水 ; 大气湿度 ; 空间分布 ; 夏季 ; 内蒙古
英文关键词	arid and semi-arid zones extreme rainstorm atmospheric humidity spatial distribution summer Inner Mongolia
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:5759456
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/2XILL650/234312
作者单位	1.内蒙古自治区气象台, 呼和浩特, 内蒙古 010051, 中国; 2.中国科学院寒区旱区环境与工程研究所, 中国科学院沙漠与沙漠化重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	宋桂英,李孝泽,江靖,等. 2013年夏季内蒙古干旱- 半干旱区两次极端降水事件对比[J]. 中国科学院西北生态环境资源研究院,2016,33(4):747-757.
APA	宋桂英,李孝泽,江靖,&刘林春.(2016).2013年夏季内蒙古干旱- 半干旱区两次极端降水事件对比.干旱区研究,33(4),747-757.
MLA	宋桂英,et al."2013年夏季内蒙古干旱- 半干旱区两次极端降水事件对比".干旱区研究 33.4(2016):747-757.