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| 大理州2005年初夏干旱成因探析 | |
| 引用本文： | 高安生,陈红玉,黄玮.大理州2005年初夏干旱成因探析[J].云南地理环境研究,2006,18(3):34-39,57. |
| 作者姓名： | 高安生 陈红玉 黄玮 |
| 作者单位： | 1. 云南省气象局,云南,昆明,650034 2. 云南省,大理州气象台,云南,大理,671000 3. 云南省气象台,云南,昆明,650034 |
| 摘 要： | 大理州2005年初夏出现了严重干旱气象事件.从500pHa高空环流特征、500pHa距平场特征、西太平洋副高特征量及北太平洋中低纬海温距平场、OLR距平场对这次干旱的成因进行了分析,分析结果表明：2005年初夏（4月1日～6月10日）降水异常偏少气温明显偏高是发生干旱的主要原因,高空大气环流异常、西太平洋副高持续偏强偏西、冷空气活动偏北是导致干旱的直接原因;孟加拉湾南部4月OLR场呈明显正距平,抑制低值系统的发展和东北移影响云南,是影响2005年大理初夏干旱重要原因;北太平洋中低纬海温特征与大理州初夏干旱有一定的遥相关性. |
| 关 键 词： | 大理 初夏干旱 高空环流 副热带高压 热带对流 |
| 文章编号： | 1001-7852（2006）03-0034-06 |
| 收稿时间： | 2005-11-28 |
| 修稿时间： | 2005-11-282005-12-27 |
A STUDY OF DROUGHT CAUSES OF FORMATION AT EARLY SUMMER 2005 IN DALI |
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| GAO An-sheng,CHEN Hong-yu,HUANG Wei.A STUDY OF DROUGHT CAUSES OF FORMATION AT EARLY SUMMER 2005 IN DALI[J].Yunnan Geographic Environment Research,2006,18(3):34-39,57. | |
| Authors: | GAO An-sheng CHEN Hong-yu HUANG Wei |
| Institution: | l.Yunnan Provincial Meteorological Bureau , Kunming 650034, Yunnan, China; 2.The Observatory of Dali Autonomous District, Dali 671000, Yunnan, China; 3.The Observatory ofYunnanProvince, Kunming 650034, Yunnan, China |
| Abstract: | Some causes of drought occurred in early summer 2005 in Dali are analyzed by 500h Pa high circulation,500 hPa anomaly fields,Western Pacific subtropical high,North Pacific Mid-low latitude SST anomaly and OLR anomaly.It is revealed that prediction is fewer than usual and temperature is higher than usual at early summer in 2005 from 1st April to 10th June),which is the primary reason causing drought.Upper-air atmospheric circulation abnormity,Western Pacific subtropical high is stronger and more west and cold air is more north,which is the direct reason causing drought.Obviously positive anomaly OLR in the south of the Bay of Bengal restrain the low system developing and north-east moving to impact Yunnan Province,which is the important reason causing drought.There is some telecorrelation between North Pacific Mid-low latitude SST characteristic and drought occurred in early summer 2005 in Dali. |
| Keywords: | Dali drought in early summer upper-air atmospheric circulation subtropical tropical convection |
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