| 2011年4月江西降水异常偏少的初步诊断分析 |
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| 引用本文： | 马锋敏,张超美,张传江,廖敏.2011年4月江西降水异常偏少的初步诊断分析[J].气象与减灾研究,2011(4):16-22. |
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| 作者姓名： | 马锋敏 张超美 张传江 廖敏 |
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| 作者单位： | [1]江西省气候中心,江西南昌330046 [2]宜春市气象局,江西宜春336000 |
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| 基金项目： | 江西省科技支撑计划项目（编号：2008BB30700） |
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| 摘 要： | 利用1959-2011年北半球500 hPa高度格点资料、74项环流特征量资料和1974-2011年NOAA OLR月平均资料,结合江西83个气象观测站的1959-2011年4月降水资料,对2011年4月江西降水异常偏少成因进行了初步诊断分析.结果表明:江西省4月降水有一定的周期性,2011年4月降水处于少雨期；La ...
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| 关 键 词： | 降水异常 La Ni(~n)a 副热带高压 OLR |
DIAGNOSTIC ANALYSIS ON PRECIPITATION ANOMALY IN JIANGXI IN APRIL 2011 |
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| Ma Fengmin,Zhang Chaomei,Zhang Chuanjiang,Liao Min.DIAGNOSTIC ANALYSIS ON PRECIPITATION ANOMALY IN JIANGXI IN APRIL 2011[J].Meteorology and Disaster Reduction Research,2011(4):16-22. |
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| Authors: | Ma Fengmin Zhang Chaomei Zhang Chuanjiang Liao Min |
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| Institution: | 1.Jiangxi Climate Center,Nanchang 330046,China 2.Yichun Meteorological Bureau,Yichun 336000,China |
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| Abstract: | Using 1959—2011 500 hPa height data,74 circulation parameters,1974—2011 monthly average outgoing long-wave radiation（OLR） data of NOAA,and 83 stations rainfall data of Jiangxi in April,the cause of precipitation less than normal is analyzed.The results show that the rainfall in April varies periodically,and the rainfall in April 2011 was in the dry period.The western Pacific subtropical high lay to the east or south of the normal position and its intensity was always weaker,which resulted weaker warm and humid air transporting northward.The Atlantic-Europe circulation pattern showed E shape and the potential height over the Tibetan Plateau was relatively higher.The negative OLR anomaly region appeared over the west tropical Pacific,and the positive OLR region was over east of the equatorial central Pacific and the southeast of China. |
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| Keywords: | Precipitation anomaly La Nia Subtropical high Outgoing long-wave radiation（OLR） |
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