Modeling the surface energy fluxes and ground thermal regime at Lhasa,Tibet
作者单位：Software SchoolZhaoqing University National Snow and Ice Data CenterCIRESUniversity of Colorado Department of Earth and Environment ScienceChengdu University of Information Technology
会议名称：《Asian Conference on Permafrost》
会议日期：1000年
学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学]
关 键 词：Surface energy balance ground thermal regime finite difference method Qinghai-Tibet Plateau
摘 要：Ground surface energy balance in cold regions is a complex function of seasonal snow cover,vegetation,atmospheric radiation,surface moisture content,and atmosphere ***,the accurate approach for describing ground surface temperature and ground thermal regime should be through the physically-based models which account for the relevant processes occurring within,and at the boundaries of permafrost,snow,and atmospheric components of the natural *** study models the surface energy balance components and ground temperature at different depths at Lhasa,Tibet,by using a surface energy balance approach based heat transfer *** influence of unfrozen water on the ground thermal regime was considered,and the effect of snow was included in the model by extending the heat conduction solution into the snow layer and computing the surface heat balance and the snow surface *** baseline inputs for the meteorological characteristics are observed data at a weather station at Lhasa on the Tibetan Plateau during *** net solar radiation,net longwave radiation,sensitive heat flux,latent heat flux and conductive heat flux were *** surface and ground soil temperature at different depths also were calculated.