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JOURNAL OF DESERT RESEARCH ›› 2017, Vol. 37 ›› Issue (4): 749-754.DOI: 10.7522/j.issn.1000-694X.2015.00282

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Parameterization Improvement on Simulation of Surface Temperature and Energy Budget over Desert using BATS Model

Ma Di1, Lv Shihua1,2, Bao Yan3, Ao Yinhuan1, Han Bo1, Zhao Lin1   

  1. 1. Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Cold and Arid Regions Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. Chengdu University of Information Technology, Chengdu 610225, China;
    3. Nanjing University of Information Science & Technology, Nanjing 210044, China
  • Received:2015-11-26 Revised:2015-12-14 Online:2017-07-20 Published:2017-07-20

Abstract: An atmospheric emissivity parameterization scheme,two bare soil emissivity parameterization schemes and two surface roughness parameterization schemes are evaluated in a land surface model (BATS) over desert.It shows that Van's bare soil emissivity scheme and Chung's atmospheric emissivity scheme can significantly improve the simulation of surface temperature and upward longwave radiation.Compared with the control run,Chung's scheme reduces the negative bias in the simulated surface temperature and upward longwave radiation by 1℃ and 10 W·m-2,respectively.The simulations of surface temperature and upward longwave radiation on clear days are better than those on cloudy days.Moreover,the surface roughness parameterization,which is given by Zhang,can significantly improve the simulation of sensible heat flux.

Key words: land surface model, emissivity, surface roughness, surface temperature, energy budget

CLC Number: