Some characteristics of the atmosphere during an adiabatic process

Some important characteristics of the atmosphere during an adiabatic process are investigated, which include the invariability of atmospheric entropy range and local surface potential temperature, the conservation of the atmospheric mass intervened between any isentropic surface and the ground, and the isentropic surface intersecting with the ground. The analysis shows that the atmospheric reference state (ARS) for investigation on available potential energy (APE) should be defined objectively as the state which could be approached from the existing atmosphere by adiabatic adjustment, and be related to initial atmospheric state before adjustment. For the initial atmosphere state at any time, its corresponding ARS is different from the one at another time. Based on the above-mentioned conclusions,the reference state proposed by Lorenz cannot be obtained physically, so a new conception, the conditional minimum total potential energy, is put forward in order to objectively investigate atmospheric APE.

作 者： GAO Li LI Jianping REN Hongli   作者單位： GAO Li(LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;Graduate School of Chinese Academy of Sciences, Beijing 100049, China)

LI Jianping(LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China)

REN Hongli(National Climate Center, Laboratory of Climate Studies, China Meteorological Administration, Beijing 100081, China) 

刊 名： 自然科學進展（英文版）  SCI 英文刊名： PROGRESS IN NATURAL SCIENCE  年，卷(期)： 2006 16(6)  分類號： N1  關鍵詞： available potential energy   adiabatic   isentropic surface   atmospheric reference state   conditional minimum total po-tential energy  

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