大气科学2018，Vol.42Issue(2)：301-310,10.DOI:10.3878/j.issn.1006-9895.1709.17116
三种温湿参数下昆明准静止锋锋面位置及锋生函数诊断的对比分析
A Comparative Analysis of the Kunming Quasi-stationary Frontal Position and Frontogenesis Function with Three Different Temperature and Humidity Parameters
摘要
Abstract
This paper discusses potential temperature (PT), equivalent potential temperature (EPT), generalized potential temperature (GPT), and corresponding frontogenesis function during the weather process of Kunming quasi-stationary front (KQSF) in January and February 2008. Results are as follows. (1) Due to the large weighting factor of humidity in the GPT, it is not appropriate for analyzing the position and intensity of the KQSF, which is determined by temperature gradient. (2) In an ideal state, the dry atmospheric PT and the saturated atmospheric EPT are only related to temperature and pressure, and can better describe the characteristics of the atmospheric temperature field. Thus both PT and EPT can be applied for analyzing the KQSF, while the EPT can better describe temperature frontal zone. (3) Frontogenesis function calculated from PT or EPT can directly represent the situation of frontogenesis and frontolysis caused by changes in temperature, while the result of the GPT is able to indicate the temperature frontogenesis (frontolysis) and humidity frontogenesis (frontolysis) at the same time, yet it cannot be simply adopted to determine the front frontogenesis or frontolysis situation of the KQSF.关键词
位温/相当位温/广义位温/昆明准静止锋/锋生函数Key words
Potential temperature/Equivalent potential temperature/Generalized potential temperature/Kunming quasi-stationary front/Frontogenesis function分类
天文与地球科学引用本文复制引用
段旭,张亚男,梁红丽..三种温湿参数下昆明准静止锋锋面位置及锋生函数诊断的对比分析[J].大气科学,2018,42(2):301-310,10.基金项目
国家自然科学基金项目41365006、41665004,National Natural Science Foundation of China (Grants 41365006 and 41665004) （Grants 41365006 and 41665004）
