Simulation Effect Test of BCC_CSM Model of Gravel Parameterization Program in National Climate Center on Qinghai-Xizang Plateau

  • Yue XU ,
  • Shihua Lü ,
  • Cuili MA ,
  • Shaobo ZHANG ,
  • Yigang Liu
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  • <sup>1.</sup>Chengdu University of Information Technology,Chengdu 610225,Sichuan,China;<sup>2.</sup>Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions,Chinese Academy of Sciences,Lanzhou 730000,Gansu,China;<sup>3.</sup>Baotou Meteorological Bureau,Inner Mongolia,Baotou 014030,Inner-Mongolia,China

Received date: 2020-06-29

  Online published: 2020-12-28

Abstract

Using the BCC_AVIM land surface process model including the gravel parameterization scheme, and coupled to the National Climate Center Climate System Model (BCC_CSM), the simulation effect of the Qinghai-Xizang Plateau region was tested.Then, using the CRA-40 soil temperature and humidity products and the grid data of surface temperature and precipitation, by comparing the simulation effects of the original scheme and the new scheme on soil temperature and humidity, surface temperature and precipitation, the results show that the new scheme reduces the Qinghai-Xizang Plateau area The deviation of soil temperature and humidity, the root mean square error, increase the correlation coefficient, the simulated value of surface temperature in the plateau area of BCC_CSM is more consistent with the observation after adding gravel, especially in summer, the correlation coefficient between the surface temperature of the new scheme and the observation value increases, and the root mean square error is reduced.The new program in BCC_CSM has also improved the precipitation simulation effect in the Qinghai-Xizang Plateau, reducing the simulated peak value of precipitation in the original program, which is closer to the observation than the original program.

Cite this article

Yue XU , Shihua Lü , Cuili MA , Shaobo ZHANG , Yigang Liu . Simulation Effect Test of BCC_CSM Model of Gravel Parameterization Program in National Climate Center on Qinghai-Xizang Plateau[J]. Plateau Meteorology, 2020 , 39(6) : 1246 -1256 . DOI: 10.7522/j.issn.1000-0534.2019.00140

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