| NUMERICAL SIMULATIONS OF HEATING ANOMALY EFFECTS OF TIBETAN PLATEAU ON CIRCULATION IN SUMMER |
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| 作者姓名： | Qian Yongfu Liu Xiaodong Zhong Zhong |
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| 作者单位： | Department of Atmospheric Sciences Nanjing University，Nanjing，Present affiliation:Lanzhou Institute of Atmospheric Physics，Academia Sinica，Lanzhou，Present affiliation:Institute of Meteorology，PLA Air Force，Nanjing |
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| 摘 要： | A 5-layer numerical model with p-σ incorporated coordinate system and primitive equations is used to simulatethe effects of heating anomaly at and over the Tibetan(Qinghai-Xizang)Plateau on the circulations in East Asia in sum-mer,The model is described briefly in the text and the results are analysed in somewhat detail.Results show that the sur-face albedo,the drag coefficient,the evaporation rate and the ground temperature all have large influences on the circula-tion near the Plateau and in East Asia.When the heating at the surface increases,the Tibetan high in the uppertroposphere intensifies,too.Its area enlarges and its axis tilts to northwest.The upper tropical easterly increase andshifts to north.The southwesterly in the lower troposphere,in consistence,also increases.The cross-equatorial low-lev-el currents along Somali and South India are influenced to increase their speeds while those over North Australia de-crease.The land low over the Asian Continent deepens.Meanwhile the upward motions over the land of east China andover the Indo-China Peninsula intensify and therefore the precipitation over those areas increases.However,along thecoastal area of China the upward motions and therefore the precipitation decrease.Atmospheric heat source anomaly has large influence on the circulation,too.Simulated results indicate that heatsource anomaly in the lower atmosphere over the Plateau influences the intensity and the position of the monsoon circu-lation while that in the upper atmosphere only affects the intensity.The heating status over the Plateau has slight influ-ence on the westerly jet,north of the Plateau,while it has strong effect on the subtropical jet at the mid and low latitudes.
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| 收稿时间： | 1991/3/30 0:00:00 |
NUMERICAL SIMULATIONS OF HEATING ANOMALY EFFECTS OF TIBETAN PLATEAU ON CIRCULATION IN SUMMER |
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| Qian Yongfu,Liu Xiaodong,Zhong Zhong.NUMERICAL SIMULATIONS OF HEATING ANOMALY EFFECTS OF TIBETAN PLATEAU ON CIRCULATION IN SUMMER[J].Acta Meteorologica Sinica,1992,6(1):70-81. |
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| Authors: | Qian Yongfu Liu Xiaodong and Zhong Zhong |
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| Institution: | Department of Atmospheric Sciences, Nanjing University, Nanjing;Department of Atmospheric Sciences, Nanjing University, Nanjing;Department of Atmospheric Sciences, Nanjing University, Nanjing |
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| Abstract: | |
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| Keywords: | heating effects of the Tibetan Plateau numerical simulation of general circulation effects of heating anomalies on circulation effects of underlying surfaces |
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