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《Journal of PLA University of Science and Technology(Natural Science Edition)》 2009-04
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Numerical sensitivity effect of heavy precipitation case on disturbance of land surface parameters

ZENG Xin-min1,2,ZHANG Qiang 1(1.Institute of Meteorology,PLA Univ.of Sci.& Tech.,Nanjing 211101,China;2.Key Lab.of Mesoscale Severe Weather of Ministry of Education,Nanjing 210093,China)  
To test the sensitivity of the heavy rainfall simulation to the disturbance of land surface parameters,WRFV2.2 simulations for heavy rainfall events occurring during 7~9 July of 2007 were conducted by prescribing the disturbances of surface albedo,roughness length,the minimum stomatal resistance and the maximum volumetric soil water.The results indicate that this weather process is sensitive to the disturbances,especially to the disturbance of the maximum volumetric soil water and surface albedo.These disturbances firstly induce the change in the surfaces fluxes(e.g.,sensible and latent heat fluxes,and momentum flux),and more importantly,through the change in the low-level circulations for the transportation of water vapor due to land-atmosphere interactions,they can greatly influence the intensity and area of the heavy rainfall.
【Fund】: 国家自然科学基金资助项目(40875067 40675040);; 国家重点基础研究发展计划资助项目(2006CB400505)
【CateGory Index】: P458.121.1
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