Coupling of the Calculated Freezing and Thawing Front Parameterization in the Earth System Model CAS-ESM

作     者：Ruichao LI Jinbo XIE Zhenghui XIE Binghao JIA Junqiang GAO Peihua QIN Longhuan WANG Si CHEN Ruichao LI;Jinbo XIE;Zhenghui XIE;Binghao JIA;Junqiang GAO;Peihua QIN;Longhuan WANG;Si CHEN

作者机构：State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid DynamicsInstitute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary SciencesUniversity of Chinese Academy of SciencesBeijing 101408China School of Mathematics and StatisticsNanjing University of Information Science and TechnologyNanjing 210044China 

出 版 物：《Advances in Atmospheric Sciences》 (大气科学进展（英文版）)

年 卷 期：2023年第40卷第9期

页      面：1671-1688页

核心收录：

学科分类：07[理学] 0705[理学-地理学] 070501[理学-自然地理学] 

基　　金：This work was jointly funded by the National Natural Science Foundation of China(Grant Nos.42205168,41830967,and 42175163) the Youth Innovation Promotion Association CAS(2021073) the National Key Scientific and Technological Infrastructure project“Earth System Science Numerical Simulator Facility”(EarthLab) 

主　　题：frozen ground freezing and thawing fronts maximum freezing depth active layer thickness earth system model CAS-ESM 

摘      要：The soil freezing and thawing process affects soil physical properties,such as heat conductivity,heat capacity,and hydraulic conductivity in frozen ground regions,and further affects the processes of soil energy,hydrology,and carbon and nitrogen *** this study,the calculation of freezing and thawing front parameterization was implemented into the earth system model of the Chinese Academy of Sciences(CAS-ESM)and its land component,the Common Land Model(CoLM),to investigate the dynamic change of freezing and thawing fronts and their *** results showed that the developed models could reproduce the soil freezing and thawing process and the dynamic change of freezing and thawing *** regionally averaged value of active layer thickness in the permafrost regions was 1.92 m,and the regionally averaged trend value was 0.35 cm yr–*** regionally averaged value of maximum freezing depth in the seasonally frozen ground regions was 2.15 m,and the regionally averaged trend value was–0.48 cm yr–*** active layer thickness increased while the maximum freezing depth decreased year by *** results contribute to a better understanding of the freezing and thawing cycle process.