新一代火星大气模式GoPlanet-Mars V1的研制  

A new global open planetary atmospheric model for Mars:GoPlanet-Mars V1

作　　者：董理 普业[1] 李艺苑[1] 刘鸿波[1] 刘娟娟[1,2] 邓世雅 黄叶薇 刘明宇 刘帅 王斌 Li Dong;Ye Pu;Yiyuan Li;Hongbo Liu;Juanjuan Liu;Shiya Deng;Yewei Huang;Mingyu Liu;Shuai Liu;Bin Wang(State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China;College of Marine Sciences,University of Chinese Academy of Sciences,Qingdao 266400,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院大气物理研究所,大气科学和地球流体力学数值模拟国家重点实验室,北京100029 [2]中国科学院大学海洋学院,青岛266400 [3]中国科学院大学地球与行星科学学院,北京100049

出　　处：《科学通报》2024年第10期1343-1350,共8页Chinese Science Bulletin

基　　金：国家自然科学基金(42075153)资助。

摘　　要：火星探测是当前国家高科技竞争力的标志,世界航天强国均研制火星大气模式,为登陆探测提供气象环境保障.本文描述了我国新一代火星大气模式(global open planetary atmospheric model for Mars,缩写GoPlanet-Mars,简称GoMars)的研制,其中的动力框架完全自主研发,具有二阶精度、能保证质量守恒.GoMars引进并耦合了美国宇航局艾姆斯研究中心的火星物理过程,具备模拟沙尘、水和CO_(2)的能力.基于我国“祝融号”、美国“维京1号、2号”的实测数据以及国际火星大气全球数据集评估了GoMars,结果表明:GoMars能成功再现3个探测器记录的火星大气独特的地表气压“两峰两谷”特征;在全球地表温度、纬向急流、极区CO_(2)冰和沙尘方面,GoMars也具备良好的模拟性能,可为我国火星探测计划实施提供新的气象环境保障手段.Mars exploration requires a high degree of scientific and technological capability,particularly in the development of a Martian atmospheric model to provide information on the meteorological conditions for landing.In addition,China has planned to implement the“Tianwen-3”exploration mission,with the goal of completing the human’s first sampling return from Mars.Based on these requirements,we developed a new global open planetary atmospheric model for Mars,abbreviated as GoPlanet-Mars(short name:GoMars),in China.We first independently designed the dynamic core of GoMars and then coupled it with the physical parameterizations developed by the National Aeronautics and Space Administration(NASA)’s Ames Research Center in United States of America.Moreover,the dynamic core of GoMars model conserves mass,potential temperature and has second-order accuracy.It solves the fully compressible nonhydrostatic equations of motion using the spherical longitude and latitude grids with mixed finite difference and finite volume discretization.In addition,for the singularity problem caused by the convergence of the meridians of the longitude and latitude grid at the north and south poles,the GoMars model uses a zonal Gaussian convolution filter on the temporal tendency of the predicted quantity.Compared with the traditional zonal fast Fourier transform or digital recursive filtering,the Gaussian convolution kernel width used by GoMars model changes continuously with latitude according to the linear numerical stability condition,which overcomes the problem of computational distortion caused by the discontinuous change,thereby greatly improving the computational stability and efficiency of the explicit scheme.In addition,the GoMars model can stably run without filtering the extremely high Martian topography and has high efficiency for parallel computing.The GoMars model has the ability to simulate the three critical cycles of the Martian atmosphere:Dust,water,and CO_(2) cycles.We preliminarily validated the GoMars model based o

关 键 词：火星 大气模式 气象环境 祝融号 

分 类 号：P185.3[天文地球—天文学] V476.4[航空宇航科学与技术—飞行器设计]