Equilibrium Mechanism Analysis on the Physical Processes of IAP3.0

• Published in: Advances in atmospheric sciences Vol. 22; no. 4; pp. 525 - 533
• Main Author: 左瑞亭 王丽琼 曾庆存 张铭
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Nature B.V 01.07.2005
• Subjects: Atmospheric circulation; Convection; Meteorology; Net radiation; Thermodynamics; Wind; 平衡机制; 数值模拟; 物理过程; equilibrium mechanism; numerical simulation; AGCM; physical processes
• ISSN: 0256-1530; 1861-9533
• DOI: 10.1007/bf02918485

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.