Equilibrium mechanism analysis on the physical processes of IAP3.0
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Based on the detection of the dynamic and thermodynamic functions of the physical processes in IAP3.0, the equilibrium mechanisms of the temperature, moisture and wind are analyzed. The negative feedback between the longwave radiation and temperature is verified. The cooling regulation of net radiation on temperature is mostly balanced by the heating of precipitation; the leading actions on temperature of other processes such as vertical diffusion, shallow cumulus convection and friction are merely available for lower air. The moisture consumption of precipitation is compensated on the whole by the provision of shallow cumulus convection, which sustains the moisture conservation to a high degree. The wind field is directly regulated by the momentum redistribution of cumulus, the dry adiabatic convection and vertical diffusion. Yet, the prominent influences of these processes are generally confined to the lower level. The east wind at low latitudes and the west wind at high latitudes are both weakened by the regulations and furthermore, by virtue of the transportation of mean meridional circulation, such a variation exactly maintains the angular momentum conservation.
Key wordsphysical processes equilibrium mechanism numerical simulation AGCM
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- Liao Dongxian, 1999:The Designing of Atmospheric Numerical Model. China Meteorological Press, 291pp. (in Chinese)Google Scholar
- Liao Dongxian, and Zou Xiaolei, 1986: Symmetric and asymmetric motion in barotropic filter model.Acta Meteorologica Sinica,44, 28–37. (in Chinese)Google Scholar
- Liao Dongxian, and Wang Shiwen, 1991: A qualitative method for detecting the reasonableness of the global atmospheric model.The Fourth Collection of the Medium-term Numerical Weather Forecast Study, China Meteorological Press, 53–70.Google Scholar
- Molinari, J., 1992: An overview of cumulus parameterization in mesoscale models.Ninth Conf on NWP, American Meteorological Society, 36–37.Google Scholar
- Wang Shiwen, and Liao Dongxian, 1991: An analysis of rationality on multi-layer primary equation model.The Fourth Collection of the Medium-term Numerical Weather Forecast Study, China Meteorological Press, 71–87. (in Chinese)Google Scholar
- Weygant, S. S., and N. L. Seaman, 1988: The relationship between forecast accuracy and grid resolution in simulations of mesoscale features accompanying cyclogenesis.Eighth Conf. on NWP, American Meteorological Society, 700–707.Google Scholar
- Zuo Ruiting, 2003: Development of New Generation Grid Point Atmospheric General Circulation Model with High Resolution. Ph. D. Dissertation, Meteorology Institute, Science and Engineering University of P.L.A., 328pp. (in Chinese)Google Scholar
- Zuo Ruiting, Zhang Ming, Zhang Donglin, Wang Aihui, and Zeng Qingcun, 2003a: The designing and testing on the dynamic framework of IAP21L AGCM.The Study on the Dynamic Theory, Model and Prediction of Climate System, China Meteorological Press, 37–49. (in Chinese)Google Scholar
- Zuo Ruiting, Zeng Qingcun, and Zhang Ming, 2003b: The designing and simulation of IAP21L AGCM: Simulation on the basic climatological state.The Study on the Dynamic Theory, Model and Prediction of Climate System, China Meteorological Press, 50–69. (in Chinese)Google Scholar
- Zuo Ruiting, Zhang Ming, Zhang Donglin, Wang Aihui, and Zeng Qingcun, 2004: The designing and numerical simulation of IAP3.0, Part I: Dynamic framework.Chinese J. Atmos. Sci.,28, 659–674. (in Chinese)Google Scholar