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本文用热力学方程和水汽连续方程反算了南海附近地区1983年10月大气热源和水汽汇的分布,分析了大气热源的结构及其演变过程与西南季风的关系。分析表明:大气热源的分布与ITCZ的活动有密切的关系,最大热源中心出现在ITCZ南侧。随着西南季风的撤退,ITCZ的南移,大气热源中心亦由南海北部逐渐向南海西部及中南半岛南端移动。西南季风与ITCZ的活动,对大气热源的形成和维持具有重要的作用。
In this paper, the distributions of atmospheric heat and water vapor in October 1983 in the area around the South China Sea are inversely calculated by the thermodynamic equation and water vapor continuity equation, and the relationship between the structure of atmospheric heat source and the evolution of southwest monsoon is analyzed. The analysis shows that the distribution of atmospheric heat sources is closely related to the activity of ITCZ, and the largest heat source center appears on the south side of ITCZ. With the retreat of the southwest monsoon, ITCZ moved southwards and the Center for Atmospheric Heat also moved gradually from the northern part of the South China Sea to the west of the South China Sea and the southern part of Indochina. The activities of the southwest monsoon and ITCZ play an important role in the formation and maintenance of atmospheric heat sources.