Relationship between the atmospheric heat source over Tibetan Plateau and the heat source and general circulation over East Asia

On the basis of NCEP/NCAR version I daily reanalysis data from 1971 to 2000 and by the methods of inverse calculation,correlation analysis and comparative analysis,the influences of atmospheric heat source(AHS) over the Tibetan Plateau on the large-scale AHS and the general circulation in summer are studied in this paper.The results show that AHS over the plateau in summer may trigger a heat source wavetrain propagating northeastward along the coast from the East Asian continent and West Pacific to Bering Strait-Arctic or even North America.In addition,if AHS over the eastern plateau is intense,South Asian High moves to southeast and West Pacific subtropical high moves to southwest;on the contrary,if AHS over the eastern plateau is weak,South Asian High moves to northwest and West Pacific subtropical high moves to northeast.Therefore,South Asian High and West Pacific sub-tropical high move in the horizontally-opposite directions in terms of interannual variation,for which AHS over the eastern plateau seems to be thermodynamically responsible.