Analysis of the Surface Energy Closure for a Site in the Gobi Desert in Northwest China |
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| Authors: | Runyuan Wang Qiang Zhang Hong Zhao Heling Wang Chunling Wang |
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| Institution: | 1,2 1 Key Laboratory of Arid Climatic Change and Disaster Reduction of Gansu Province;Key Open Laboratory of Arid Climatic Change and Disaster Reduction of CMA;Institute of Arid Meteorology,CMA,Lanzhou 730020 2 Nanjing University of Information Science & Technology,Nanjing 210044 |
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| Abstract: | 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. |
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| Keywords: | surface energy balance storage terms Gobi Desert Northwest China |
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