A Brief Report of Graphic Explanations for Generalized Potential Temperature in the Non-Uniformly Saturated Atmosphere  

作　　者：CAO Jie ZHOU Yu-Shu GAO Shou-Ting 

机构地区：[1]Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China [2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Atmospheric and Oceanic Science Letters》2011年第3期162-167,共6页大气和海洋科学快报（英文版）

基　　金：supported by the National Basic Research Program of China (2009CB421505);the National Natural Science Foundation of China (41075044 and 41075079)

摘　　要：Compared to potential temperature （θ） in the dry atmosphere and equivalent potential temperature （θc） in the saturated atmosphere, generalized potential tem- perature （θ＂） has already proven a better thermodynamic parameter in describing the non-uniformly saturated real atmosphere. To add otherwise absent graphic explanations, this paper first presents the physical definition of θ through a tephigram. Then, the utility of the measurement in identifying and forecasting the locations of precipita- tion maxima and heat wave areas with diagnostic com- parison studies and traditionally used thermodynamic parameters is shown.Compared to potential temperature(θ) in the dry atmosphere and equivalent potential temperature(θe) in the saturated atmosphere,generalized potential temperature(θ*) has already proven a better thermodynamic parameter in describing the non-uniformly saturated real atmosphere.To add otherwise absent graphic explanations,this paper first presents the physical definition of θ* through a tephigram.Then,the utility of the measurement in identifying and forecasting the locations of precipitation maxima and heat wave areas with diagnostic comparison studies and traditionally used thermodynamic parameters is shown.

关 键 词：generalized potential temperature physicalgraph thermodynamic parameters 

分 类 号：O316[理学—一般力学与力学基础] TU323.301[理学—力学]