| 2004—2005年宁夏特大干旱事件的诊断分析 |
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| 引用本文： | 杨淑萍,赵光平,孙银川,马力文,苏占胜,穆建华.2004—2005年宁夏特大干旱事件的诊断分析[J].中国沙漠,2006,26(6):948-952. |
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| 作者姓名： | 杨淑萍 赵光平 孙银川 马力文 苏占胜 穆建华 |
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| 作者单位： | 1. 宁夏气象防灾减灾重点实验室,宁夏,银川,750002
2. 中国气象局,兰州干旱气象研究所,甘肃,兰州,730020 |
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| 基金项目： | 国家自然科学基金;科技部资助项目;宁夏科技攻关项目 |
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| 摘 要： | 通过对2004年9月至2005年11月宁夏全区24个站连续15个月气温和降水资料进行分析,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,其结果表明: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500 hPa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。
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| 关 键 词： | 干旱事件 环流异常 诊断分析 宁夏 |
| 文章编号： | 1000-694X（2006）06-0948-05 |
| 收稿时间： | 2006-04-12 |
| 修稿时间： | 2006-06-22 |
Diagnosis Analysis on Extremely Drought Events in Ningxia during 2004-2005 |
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| YANG Shu-ping,ZHAO Guang-ping,SUN Yin-chuan,MA Li-wen,SU Zhan-sheng,MU Jian-hua.Diagnosis Analysis on Extremely Drought Events in Ningxia during 2004-2005[J].Journal of Desert Research,2006,26(6):948-952. |
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| Authors: | YANG Shu-ping ZHAO Guang-ping SUN Yin-chuan MA Li-wen SU Zhan-sheng MU Jian-hua |
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| Institution: | 1 .Ningaia Key Laboratory of Meteorological Disaster Preventing and Reducing, Yinchuan 750002, China; 2 .l.anzhou Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China |
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| Abstract: | We have analyzed the climate characters,atmospheric circulation characters and the causes of drought events in Ningxia based on the temperature and precipitation data of 24 observation stations in continuously 15 months from September 2004 to November 2005.The results showed that the extremely drought events in Ningxia during 2004-2005 occurred under the background of global warming,and the Baikal Blocking High and the persistence of 500 hPa Positive Height Anomaly were the main causes.Meanwhile,the feeble Pacific Subtropical High compared with the normal was also an important cause of drought event. |
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| Keywords: | drought events atmospheric circulation abnormity diagnosis analysis Ningxia |
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