安徽农业科学2011，Vol.39Issue(20)：12358-12360,3.
阿拉善盟2010年夏季干旱成因探讨
Discussion on the Causes of Drought in Summer in Alashan League in 2010
多福学 1多海伟 2刘志宁 1马文超1
作者信息
- 1. 内蒙古阿拉善盟气象局,内蒙古,阿拉善盟,750300
- 2. 江苏省连云港市气象局,江苏,连云港,222000
- 折叠
摘要
Abstract
[Objective]The causes of drought in summer in Alashan League in 2010 were discussed.[Method]Through the discussiom of elimate background,circulation cjharacteristics,subtropical high and ocean temperature of the severe drought in Alashan League in Inner Mongolia during the flooding time,the potential causes of drought in Alashan League in summer in 2010 were discussed.[Result] The cireulation around Alashan League and surroundings in 850 hPa was weak.Especially the southerly was extremely wesak and it restricted the transportation of southerly water vapor towards Inner Mongolia,which was one of the direct reasons of drought;the 500 hPa high pressure ride eontrolled Alashan League,and resulted into long-term drought and lasting high temperature.The summer seasonal wind was weak and arrived land in Alashan League.The northwest pacific subtropical high was large and strong.Only when subtropical high was strong and merged as well as strengthened with high pressure ridge around middle and high latitude in the lower reaches 130°-140°E,can rain be generated.However,the latter condition was limited in summer in 2010.When the ocean temperature around 30°-50°N and 140°-150°E was low in the north and high in the south,there would be less rain in Alashan League.[Conclusion]The study provided relevant information and technological support for the drought disaster warning forecast,drought observation system,and disaster prowention and mitigation measures.关键词
干旱/成因分析/夏季/阿拉善盟Key words
Drought/Causes analsis/Summer/Alashan League分类
农业科技引用本文复制引用
多福学,多海伟,刘志宁,马文超..阿拉善盟2010年夏季干旱成因探讨[J].安徽农业科学,2011,39(20):12358-12360,3.
