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2004~2005年宁夏特大干旱事件的诊断分析
Diagnosis analysis on prominent drought event in Ningxia during 2004~2005
【作者】 杨淑萍; 孙银川; 马力文; 赵光平; 苏占胜; 穆建华;
【Author】 Yang Shu-ping1,Sun Yin-chuan1,Ma Li-wen1,Zhao Guang-ping2,Su Zhan-sheng1,Mu Jian-hua1(1.Ningxia Key Laboratory of Meteorological Disaster Preventing and Reducing,Yinchuan 750002,China;2.Lanzhou Institute of Arid Meteorology,China Meteorological Bureau,Lanzhou 730020,China)
【机构】 宁夏气象防灾减灾重点实验室; 中国气象局兰州干旱气象研究所;
【摘要】 通过对2004年9月~2005年11月宁夏全区24个站连续15个月气温和降水资料分析,对干旱事件的气候特征、干旱环流特征以及造成干旱的成因进行初步诊断分析,结果表明:宁夏2004~2005年特大干旱事件是在全球气候变暖的条件下发生的,贝加尔湖阻高以及500hpa正高度距平持续维持是造成宁夏特大干旱事件发生的根本原因;同时,西太平洋副高与常年相比较弱也是其重要原因之一。
【Abstract】 By the analysis of temperature and precipitation data of Ningxia 24 observation stations in 15 months from September 2004 to November 2005,the climate character,atmospheric circulation character and the cause of drought in this drought event were analyzed,the result shows that:the prominent drought event in Ningxia between 2004 to 2005 occurred under the background of global warming,and the Baikal blocking high and the persistence of 500hpa positive height anomaly are the main cause of the prominent drought event occurred in Ningxia,meanwhile,the feebleness of Pacific subtropical high is also a important cause of drought event,too.
【Key words】 Drought events; Atmospheric circulation abnormity; Research; Ningxia;
- 【会议录名称】 中国气象学会2007年年会气候学分会场论文集
- 【会议名称】中国气象学会2007年年会
- 【会议时间】2007-11
- 【会议地点】中国广东广州
- 【分类号】P426.6
- 【主办单位】中国气象学会