Analysis of the Surface Energy Closure for a Site in the Gobi Desert in Northwest China  

作　　者：王润元 张强 赵鸿 王鹤龄 王春玲 

机构地区：[1]Key Laboratory of Arid Climatic Change and Disaster Reduction of Gansu Province [2]Key Open Laboratory of Arid Climatic Change and Disaster Reduction of CMA [3]Institute of Arid Meteorology,CMA [4]Nanjing University of Information Science & Technology,Nanjing 210044 [5]Nanjing University of Information Science & Technology

出　　处：《Acta meteorologica Sinica》2012年第2期250-259,共10页

基　　金：Supported by the National Basic Research and Development (973) Program of China (2012CB955304);National Natural Science Foundation of China (40575006 and 40830957);China Meteorological Administration Special Public Welfare Research Fund(GYHY201106029 and GYHY200806021)

摘　　要：The heat storage terms over an ideal（non-vegetated） horizontal desert surface may be very important and easily neglected in surface energy balance studies.In this paper,based on a field experiment over the Gobi Desert in the middle part of the Hexi Corridor in Northwest China（39 05 N,100 16 E;1457-m elevation）,we studied the energy budget closure and evaluated the contribution of the heat storage terms to the closure of the surface energy balance.There were imbalances of 8% and 15% in summer and winter,respectively,if the heat storage terms were not taken into account.For both seasons,a nearly perfect result of the surface energy closure（99%） was obtained by inclusion of the estimates of heat storage terms.The soil heat storage term improved the surface energy imbalance by about 6% in summer and 13% in winter,and the air enthalpy storage term improved it by about 0.6% in summer and 1% in winter,while the contribution of the atmospheric moisture changes could be ignored.The heat storage terms over an ideal（non-vegetated） horizontal desert surface may be very important and easily neglected in surface energy balance studies.In this paper,based on a field experiment over the Gobi Desert in the middle part of the Hexi Corridor in Northwest China（39 05 N,100 16 E;1457-m elevation）,we studied the energy budget closure and evaluated the contribution of the heat storage terms to the closure of the surface energy balance.There were imbalances of 8% and 15% in summer and winter,respectively,if the heat storage terms were not taken into account.For both seasons,a nearly perfect result of the surface energy closure（99%） was obtained by inclusion of the estimates of heat storage terms.The soil heat storage term improved the surface energy imbalance by about 6% in summer and 13% in winter,and the air enthalpy storage term improved it by about 0.6% in summer and 1% in winter,while the contribution of the atmospheric moisture changes could be ignored.

关 键 词：surface energy balance storage terms Gobi Desert Northwest China 

分 类 号：P463.1[天文地球—大气科学及气象学]