首页|Two types of summertime heating over the Asian large-scale orography and excitation of potential-vorticity forcing I.Over Tibetan Plateau

Two types of summertime heating over the Asian large-scale orography and excitation of potential-vorticity forcing I.Over Tibetan Plateau

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Based on numerical simulation,this study explored the characteristics and interactions of surface sensible heating and atmospheric latent heating over the main part of the Tibetan Plateau,i.e.,terrain at elevations ＞2 km in summer.The impacts of these two types of heating on local vertical motion and monsoonal meridional circulation were compared.Theoretical analysis and numerical experimentation demonstrated that by changing the configuration of the upper-tropospheric air temperattre and circulation,the two types of heating could generate both minimum absolute vorticity and abnormal potential vorticity forcing near the tropopause,enhance the meridional circulation of the Asian summer monsoon,and produce an eastward-propagating Rossby wave train within the mid-latitude westerly flow.Consequently,the manifestations of these features were shown to influence the circulation of the Northern Hemisphere.

Tibetan PlateauSurface sensible heatingLatent heatingMonsoonal meridional circulationPotential vorticity forcing

WU GuoXiong、ZHUO HaiFeng、WANG ZiQian、LIU YiMin

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State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China

College of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou 510275, China

This study was supported by the Nsyionsl Natural Science Foundation of ChinaThis study was supported by the Nsyionsl Natural Science Foundation of Chinathe Special Fund for Public Welfare Industry (Meteorology) administered by the Chinese Ministry of Finance and the Ministry

Grant Nos.4127508891437219 & 41328006Grant No.GYHY201406001

2016

10.1007/s11430-016-5328-2

中国科学:地球科学(英文版)
中国科学院

中国科学:地球科学(英文版)

CSCDSCIEI
影响因子：1.002
ISSN：1674-7313
年,卷(期)：2016.59(10)
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