Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Chinese Journal of Atmospheric Sciences》 2011-03
Add to Favorite Get Latest Update

Contemporaneous Relationships between Summer Atmospheric Heat Source over the Tibetan Plateau and Drought/Flood in Eastern Southwest China

LI Yonghua1,2,LU Chuhan2,XU Haiming1,CHENG Bingyan1,and WANG Yong11 Chongqing Climate Center,Chongqing 4011472 Key Laboratory of Meteorological Disaster of Ministry of Education,Nanjing University of Information Science & Techno-logy,Nanjing 210044  
Based on the NCEP/NCAR reanalysis monthly data and daily precipitation data at 20 stations in eastern Southwest China from 1959 to 2006,the features of atmospheric heat source over the Tibetan Plateau and the key area associated with the drought/flood in summer over eastern Southwest China have been analyzed.Results show that there is a close relationship between the flood/drought over eastern Southwest China and the intensity of the atmospheric heat source over southeastern Tibetan Plateau(key area),i.e.,the rainfall is more than normal while the heat source is stronger.It is propitious to appearance of circulation making for the summer rainfall in eastern Southwest China;furthermore,the vapor transport and convergent upward velocity are strengthened,the East Asian summer monsoon is weaker,and the ridge positions of the western Pacific subtropical high and South Asia high lean to south when the intensity of the atmospheric heat source over eastern Tibetan Plateau(key area) is stronger than normal,vice versa.
【Fund】: 国家自然科学基金资助项目40975058;; 重庆市自然科学基金计划重点项目CSTC2008BA0022;; 公益性行业(气象)科研专项GYHY201006054
【CateGory Index】: P426.616
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved