Evaluation of Atmosphere–Land Interactions in an LES from the Perspective of Heterogeneity Propagation  

作　　者：Shaofeng LIU Michael HINTZ Xiaolong LI 

机构地区：[1]Institute of Geophysics and Meteorology, University of Cologne [2]National Satellite Meteorological Center,China Meteorological Administration

出　　处：《Advances in Atmospheric Sciences》2016年第5期571-578,共8页大气科学进展（英文版）

基　　金：supported by the DFG Transregional Cooperative Research Centre 32 "Patterns in Soil-Vegetation-Atmosphere-Systems: Monitoring, Modelling and Data Assimilation"

摘　　要：Atmosphere–land interactions simulated by an LES model are evaluated from the perspective of heterogeneity propagation by comparison with airborne measurements. It is found that the footprints of surface heterogeneity, though as 2D patterns can be dissipated quickly due to turbulent mixing, as 1D projections can persist and propagate to the top of the atmospheric boundary layer. Direct comparison and length scale analysis show that the simulated heterogeneity patterns are comparable to the observation. The results highlight the model＇s capability in simulating the complex effects of surface heterogeneity on atmosphere–land interactions.Atmosphere–land interactions simulated by an LES model are evaluated from the perspective of heterogeneity propagation by comparison with airborne measurements. It is found that the footprints of surface heterogeneity, though as 2D patterns can be dissipated quickly due to turbulent mixing, as 1D projections can persist and propagate to the top of the atmospheric boundary layer. Direct comparison and length scale analysis show that the simulated heterogeneity patterns are comparable to the observation. The results highlight the model＇s capability in simulating the complex effects of surface heterogeneity on atmosphere–land interactions.

关 键 词：atmosphere–land interaction heterogeneity large-eddy simulation 

分 类 号：P43[天文地球—大气科学及气象学]