气象2017，Vol.43Issue(3)：268-277,10.DOI:10.7519/j.issn.1000-0526.2017.03.002
2013年湖北一次大暴雨β中尺度分析和模拟诊断
Simulation and Diagnosis of the Evolution Characteristics of a Meso-β Scale Heavy Rainstorm Event in Hubei in 2013
摘要
Abstract
Based on a variety of densely observed data from automatic surface weather observation system, NCEP/GFS 0.5°×0.5°analysis data,the temperature of black bold (TBB)observed by FY-2E satellite, the evolution of the heavy rainstorm process in Hubei Province during 5-6 July 2013 is analyzed.Using the high-resolution output from WRF model,the evolution of the meso-βscale systems is diagnosed.The results show that the severe convection took place in the overlay zone of positive vorticity in front of trough at 500 hPa,the shear line of low layer near jet flow nucleus,the upper divergence and the instability ener-gy.There were three meso-βscale systems in the large-scale favorable weather situations,and the heavy rainfall groups were associated with the development of the convective systems.Considering the coales-cence growth of droplets of the saturated water vapor,cloud water and cloud ice,the WRF model diagno-sis is discussed through the precipitation rate of flux divergences.We have found four meso-γscale sys-tems in rain-bands from the evening of 5 July to the morning of 6 July 2013,and the physical quantity val-ue could quantitatively estimate the hourly rainfall intensity to some extent.Maximum probable convective precipitation rate could be a better physical quantity value to reflect the relations of the vapor condition in mesoscale rain cluster,thermodynamic condition and rainfall.Thus,it could be applied to the Doppler weather radar nowcasting.关键词
暴雨/对流系统/模拟诊断/通量散度/对流可降水率Key words
rainstorm/convective system/simulation and diagnosis/flux divergence/convective precipita-tion rate分类
天文与地球科学引用本文复制引用
祁海霞,辜旭赞,白永清,钟敏,王晓玲..2013年湖北一次大暴雨β中尺度分析和模拟诊断[J].气象,2017,43(3):268-277,10.基金项目
国家自然科学基金项目(41275106)和公益性行业(气象)科研专项(GYHY201106003)共同资助 （41275106）
