PRELIMINARY STUDY ON RELATIONSHIP BETWEEN DOUBLE VORTICES SELF-ORGANIZATION AND TYPHOON FORMATION IN BAROCLINIC ENVIRONMENT  

作　　者：滕代高 罗哲贤 潘劲松 余晖 

机构地区：[1]Zhejiang Meteorological Observatory [2]School of Remote Sensing, NUIST [3]Shanghai Typhoon Institute of CMA

出　　处：《Journal of Tropical Meteorology》2010年第4期372-379,共8页热带气象学报（英文版）

基　　金：National Nature Science Foundation of China (40333028);key project of Science and Technology Department of Zhejiang Province (2007C13G1610002);Chinese Meterological Administration’s Special Funds (Meterology) for Scientific Research on Public Causes (GYHY(QX)2007-6-37)

摘　　要：The relationship between the self-organization of double vortices （SODVs） and the formation of typhoons was discussed based on six numerical experiments with the Fifth-Generation National Center for Atmospheric Research/Penn State Mesoscale Model （MM5） and further discussion was made with a real typhoon case. The results showed that there is a critical distance dc for SODVs in baroclinic atmosphere. When the distance between separated vortices is smaller than or equal to d~, the double vortices self-organize into a typhoon-like vortex with two spiral bands. But the double vortices cannot have such organization if the distance between them is larger than de. The value of dc is about 380 km in the context of ideal conditions in this paper, larger than that achieved in a barotropic model. A typical typhoon case in 2005 （Haitang） was selected to verify the above-mentioned conclusions. It was found that the SODV is one of the important and typical ways for the formation of typhoons.The relationship between the self-organization of double vortices (SODVs) and the formation of typhoons was discussed based on six numerical experiments with the Fifth-Generation National Center for Atmospheric Research/Penn State Mesoscale Model (MM5) and further discussion was made with a real typhoon case. The results showed that there is a critical distance dc for SODVs in baroclinic atmosphere. When the distance between separated vortices is smaller than or equal to dc, the double vortices self-organize into a typhoon-like vortex with two spiral bands. But the double vortices cannot have such organization if the distance between them is larger than dc. The value of dc is about 380 km in the context of ideal conditions in this paper, larger than that achieved in a barotropic model. A typical typhoon case in 2005 (Haitang) was selected to verify the above-mentioned conclusions. It was found that the SODV is one of the important and typical ways for the formation of typhoons.

关 键 词：baroclinic atmosphere self-organization of double vortices typhoon formation 

分 类 号：P444[天文地球—大气科学及气象学]