气象科学2017，Vol.37Issue(1)：60-69,10.DOI:10.3969/2015jms.0072
2013年长江中下游地区夏季高温事件的环流特征及成因
Circulation characteristics and causes of the summer extreme high temperature event in the middle and lower reaches of the Yangtze River of 2013
摘要
Abstract
Based on the ERA-interim,NCEP CFSR daily reanalysis data and daily observation temperature data from 29 stations over middle and low reaches of Yangtze River,the characteristics of the extreme high temperature event,circulation features and its causes over the middle and lower reaches of the Yangtze River during 23 July to 14 August,2013 were analyzed.Results show that the intensity of the Western Pacific Subtropical High (WPSH) was extremely strong in summer of 2013,and the atmospheric adiabatic heating caused by the enhancing sinking motion in the WPSH controlling zone is the main cause for this high temperature event.Moreover,the extremely enhanced WPSH-related anticyclonic circulation leads to an increasing outflow of the water vapor over the middle and lower reaches of the Yangtze River area to the east,which causes the decreasing of the water vapor content,increasing of downward solar radiation flux at the surface,so this is another cause for this high temperature event.Further analysis indicates that an anomalous enhanced atmospheric heating source over the Maritime Continent is probably the main reason why the WPSH is extremely strong in summer of 2013.关键词
西太平洋副热带高压/极端高温/海洋性大陆/大气热源Key words
Western Pacific subtropical high/Extreme high temperature/Maritime continent/Atmospheric heating source分类
天文与地球科学引用本文复制引用
夏扬,徐海明..2013年长江中下游地区夏季高温事件的环流特征及成因[J].气象科学,2017,37(1):60-69,10.基金项目
国家自然科学基金资助项目(41275094,41490643,41575077) （41275094,41490643,41575077）
国家重点基础研究发展计划(973计划)项目(2012CB955602) （973计划）
江苏高校优势学科建设工程资助项目(PAPD) （PAPD）
江苏省高校“青蓝工程”资助项目 （）
