摘要
利用NCEP逐日再分析资料、OLR资料和SST资料对2006年夏季重庆地区持续高温干旱过程的天气特征、环流背景及形成机理进行了初步分析,结果表明:造成重庆持续异常高温伏旱的主要原因是西太平洋副热带高压的异常,而它与南亚高压位置和强度的异常、极涡和副热带急流的变化、西太平洋暖池偏暖等因子都有较大关系。
The weather characteristics,circulation background and the formation mechanism of the abnormal lasting high temperature and drought event occurred in Chongqing in summer of 2006 are analyzed by using reanalysis data of NCEP,OLR and SST data.Results show that the abnormity of West Pacific Subtropical High resulted in this lasting high temperature and drought event,and this abnormity of West Pacific Subtropical High was greatly affected by such factors as the abnormal position and strength of Southern Asia High,changes of Polar vortex and subtropical jet stream,warming West Pacific Warm Pool and so on.
出处
《干旱气象》
2008年第1期1-7,共7页
Journal of Arid Meteorology
关键词
重庆
高温伏旱
天气特征
环流背景
形成机理
Chongqing
summer high temperature and drought
weather characteristics
circulation background
formation mechanism
