The seasonal climatic simulation of 9000 years before present by using the IAP atmospheric general circulation model |
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| Authors: | Huijun Wang |
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| Institution: | LASG, Institute of Atmospheric Physics, Academia Sinica, Beijing 100080 |
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| Abstract: | The seasonal cycle of the climate of 9000 years before present was simulated with the IAP two-level atmospheric general circulation model. The incoming solar radiation was specified from the orbital parameters for 9000 years Ago. The boundary conditions of that time were prescribed to the present value because of the small differences between the two. The change in radiation makes temperature to be higher in summer and lower in winter over large areas of the land; and the increased temperature contrast between the land and the ocean strengthens the summer monsoon circulation and increases the precipitation over there. The asymmetry of temperature change between the Northern Hemisphere and the Southern Hemisphere and between summer and winter still exists, which agrees with that get from the previous perpetual experiments. |
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