2005年初夏云南严重干旱的诊断分析

基金项目: 国家自然科学基金项目(40365001)

DIAGNOSTIC ANALYSIS OF THE SEVERE DROUGHT OVER YUNNAN AREA IN THE EARLY SUMMER OF 2005

1.
Climate Center of Yunnan, Kunming 650034, China
2.
Meteorological Science & Technology Services Center of Yunnan, Kunming 650034, China
3.
Department of Atmospheric Science, Yunnan university, Kunming 650091, China
4.
China Meteorological Administration Training Center, Beijing 100081, China

摘要: 2005年春末夏初云南出现了55年来最严重的高温干旱天气。通过诊断分析发现,造成此异常气候主要原因是中高层大气环流季节转换滞后,冷空气活动偏北;南海夏季风爆发偏晚;热带对流偏弱;西太平洋副高偏南、偏强、偏西。
- 云南 /
- 高温干旱 /
- 南海季风 /
- 副热带高压 /
- 热带对流
Abstract: High temperature and drought occurred in Yunnan province during the late spring and early summer of 2005,which is the most severe event in this region since the 1950's.Based on the observational data and relevant diagnoses,this extreme weather event was studied and discussed.The results show that the occurrence of this event could be due to the following observational facts that happened in 2005.(1) The seasonal adjustment of middle-and high-level atmospheric circulation was delayed.(2) The cold air activity center was deviated north.(3) The onset of summer monsoon over the South China Sea was delayed.(4) The tropical convection was much weaker than usual.(5) The subtropical high over the western Pacific was located southwestwards and relatively strong.
- Yunnan high temperature and drought /
- summer monsoon of South China Sea /
- subtropical high /
- tropical convection /

[1]	国家气候中心.气候系统监测公报[Z].2005(5).
[2]	国家气候中心.东亚季风监测简报[Z].2005(6).
[3]	秦剑,琚建华,解明恩.低纬高原天气气候[M].北京:气象出版社,1997:51-60.
[4]	秦剑,解明恩,刘瑜,等.云南气象灾害总论[M].北京:气象出版社,2000:16-64.
[5]	严华生,李艳,晏红明,等.热带海温变化对云南初夏干旱干湿转换季节雨量的影响[J].热带气象学报,2002,18(2):165-172.
[6]	刘瑜,马振峰,陶云,等.云南2002年雨季偏早的环流特征分析[J].高原气象,2003,22(增刊):102-109.
[7]	琚建华,赵尔旭.东亚夏季风区的低频振荡对长江中下游旱涝的影响[J].热带气象学报,2005,21(2):163-172.
[8]	赵振国.中国夏季旱涝及环境场[M].北京:气象出版社,1999:28-50.
[9]	刘瑜,解明恩.1997年云南严重初夏干旱的诊断分析[J].气象,1998,24(8):50-56.
[10]	刘瑜.云南雨季早迟的气候特征分析[J].气象,2000,26(7):45-49.
[11]	解明恩,刘瑜.1997年的强ENSO事件[J].热带气象学报,1998,14(2):186-192.
[12]	谭桂容,孙照渤.西太平洋副高与华北旱涝的关系[J].热带气象学报,2004,20(2):206-212.
[13]	王黎娟,何金海,管兆明.苏门答腊地区对流活动及其与南海夏季风建立的关系[J].南京气象学院学报,27(4):451-460.