| Some characteristics of the atmosphere during an adiabatic process |
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| 作者姓名： | GAO Li LI Jianping REN Hongli |
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| 作者单位： | 1. LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029， China; 2. Graduate School of Chinese Academy of Sciences, Beijing 100049, China; 3. National Climate Center, Laboratory of Climate Studies, China Meteorological Administration, Beijing 100081, China |
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| 基金项目： | 国家优秀青年学者奖励计划;国家重点基础研究发展计划(973计划) |
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| 摘 要： | 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.
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| 关 键 词： | available potential energy adiabatic isentropic surface atmospheric reference state conditional minimum total potential energy. |
Some characteristics of the atmosphere during an adiabatic process |
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| GAO Li,LI Jianping,REN Hongli.Some characteristics of the atmosphere during an adiabatic process[J].Progress in Natural Science,2006,16(6):644-648. |
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| Authors: | GAO Li LI Jianping REN Hongli |
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| Abstract: | 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. |
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| Keywords: | available potential energy adiabatic isentropic surface atmospheric reference state conditional minimum total po-tential energy |
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