Gravel Parameterization Schemes for Regional Climate Model RegCM and Analysis of Its Simulation of Soil Moisture Transportation over the Different Areas of Qinghai-Xizang Plateau

Yigang LIU; Shihua Lü; Cuili MA; Yue XU; Jiangxin LUO

doi:10.7522/j.issn.1000-0534.2020.00086

2022 , Vol. 41 >Issue 1: 79 - 92

DOI: https://doi.org/10.7522/j.issn.1000-0534.2020.00086

Gravel Parameterization Schemes for Regional Climate Model RegCM and Analysis of Its Simulation of Soil Moisture Transportation over the Different Areas of Qinghai-Xizang Plateau

Yigang LIU ,
Shihua Lü ,
Cuili MA ,
Yue XU ,
Jiangxin LUO

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1. Plateau Atmosphere and Environment Key Laboratory of Sichuan Province，College of Atmosphere Sciences，Chengdu University of Information Technology，Chengdu 610225，Sichuan，China
2. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters （CIC-FEMD），Nanjing University of Information Science & Technology，Nanjing 210044，Jiangsu，China
3. Baotou Meteorological Bureau，Baotou 014030，Inner-Mongolia，China

Received date: 2020-08-17

Revised date: 2020-10-26

Online published: 2022-03-17

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Abstract

In the regional climate model RegCM4.7 coupled with CLM4.5， the original soil hydrothermal parameterization schemes and the improved gravel parameterization schemes were applied respectively over the western， central， and southeastern Qinghai-Xizang Plateau， and a site over each area was selected to analyze the mechanism for the discrepancy between the simulation of the two schemes according to the distribution characteristics of the gravel.Based on this， the simulation effect of the gravel parameterization schemes with soil moisture content was validated using China land surface integration reanalysis data （CRA-40）.Results showed that In the RegCM4.7 using the gravel parameterization schemes： the surface moisture input is the major factor affecting the surface ground-soil hydrological process； Lower gravel content facilitates the downward transportation of soil water， whereas the impact of higher gravel content on the downward transportation of soil water varies with different areas of the plateau.the simulation effect on the soil moisture of the gravel parameterization schemes varies with different areas of the plateau， the simulation effect over the southeast plateau has been improved most significantly.

Key words： Qinghai-Xizang Plateau; RegCM4.7; soil gravel parameterization; regional simulation effect

Cite this article

Yigang LIU , Shihua Lü , Cuili MA , Yue XU , Jiangxin LUO . Gravel Parameterization Schemes for Regional Climate Model RegCM and Analysis of Its Simulation of Soil Moisture Transportation over the Different Areas of Qinghai-Xizang Plateau[J]. Plateau Meteorology, 2022 , 41(1) : 79 -92 . DOI: 10.7522/j.issn.1000-0534.2020.00086

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