Origin and advances in implementing blowing-snow effects in the Community Land Model

作者：ZeYong Hu,ZhiPeng Xie

摘要：Snow cover on the Tibetan Plateau(TP)is closely related to regional and continental biological and hydrological processes.The vast snow cover,special climatic conditions,and sparse vegetative cover over the TP facilitate the occurrence of blowing snow,leading to substantial heterogeneities in the snow cover and great promotion in the moisture supply from the land surface to the overlying atmospheric boundary layer.However,blowing-snow processes are significantly misrepresented or even neglected in current models,which causes considerable uncertainties of numerical model simulations and leads to erroneous estimates of snow-related processes in mountainous terrain.We present in this paper a brief review of our work in the past 5 years to serve as a basis for further development and improvement of the land-surface model.These studies can be divided into three parts:detection of the problems,development of the land-surface model,and application of the coupled model over the TP(the logical framework is presented in Figure 1).The origin and advances in the development of a land-surface model with consideration of blowing-snow effects are described herein;and the importance of blowing-snow processes in the land-surface model,especially over the TP,is highlighted.We expect that the blowingsnow studies over the TP will play a key role in documenting and understanding the land-surface processes(LSPs)and the cryospheric changes over the TP.

发文机构：Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions Key Laboratory of Tibetan Environment Changes and Land Surface Processes CAS Center for Excellence in Tibetan Plateau Earth Sciences

关键词：BLOWINGSNOWLANDsurfaceprocessCOMMUNITYLANDMODELTibetanPlateau

分类号： P40[天文地球—大气科学及气象学]