SENSITIVITY OF LANDFALLING TYPHOON STRUCTURE AND PRECIPITATION TO VARYING CLOUD MICROPHYSICAL PROCESSES  

作　　者：花丛 刘奇俊 

机构地区：[1]National Meteorological Center, Beijing 100081 China

出　　处：《Journal of Tropical Meteorology》2016年第3期341-351,共11页热带气象学报（英文版）

基　　金：Special Found for Meteorological Research in the Public Interest(GYHY201506008);Study on Parameterization of Boundary Layer Stratocumulus Process of GRAPES Model

摘　　要：Typhoon KROSA in 2007 is simulated using GRAPES,a mesoscale numerical model,in which a two-parameter mixed-phase microphysics scheme is implanted.A series of numerical experiments are designed to test the sensitivity of landfalling typhoon structure and precipitation to varying cloud microphysics and latent heat release.It is found that typhoon track is sensitive to different microphysical processes and latent heat release.The cloud structures of simulated cyclones can be quite different with that of varying microphysical processes.Graupel particles play an important role in the formation of local heavy rainfall and the maintenance of spiral rainbands.Analysis reveals that the feedback of latent heat to dynamic fields can significantly change the content and distribution of cloud hydrometeors,thus having an impact on surface precipitation.Typhoon KROSA in 2007 is simulated using GRAPES, a mesoscale numerical model, in which a two-parameter mixed-phase microphysics scheme is implanted. A series of numerical experiments are designed to test the sensitivity of landfalling typhoon structure and precipitation to varying cloud microphysics and latent heat release. It is found that typhoon track is sensitive to different microphysical processes and latent heat release. The cloud structures of simulated cyclones can be quite different with that of varying microphysical processes. Graupel particles play an important role in the formation of local heavy rainfall and the maintenance of spiral rainbands. Analysis reveals that the feedback of latent heat to dynamic fields can significantly change the content and distribution of cloud hydrometeors, thus having an impact on surface precipitation.

关 键 词：CLOUD MICROPHYSICS GRAPES model landfalling TYPHOON LATENT heat 

分 类 号：P444[天文地球—大气科学及气象学]