Simulation of the Martian Water Cycle with a Coupled Interactive Dust Cycle
周剑超 副教授
澳门科技大学
邀请人 : 董 理 正高级工程师
2024年8月14日(周三)14:30
3号楼1218会议室
报告摘要:
Dust particles are the primary media for the nucleation of water cloud ice, and the radiative effects of dust and ice particles could affect the atmospheric circulation and so the spatial distribution of dust and water ice, the dust and water cycles are indeed coupled together. However, in most existing GCM simulations of the water cycle, the dust cycle is implemented either by the prescription of observed dust optical depth, or by dust injection based on observations; i.e., the water cycle is not coupled with the dust cycle. In this study, we try to simulate the Martian water cycle with an interactive dust approach, i.e., dust particles in the atmosphere are provided by the dust lifting processes at the ground surface and distributed by the atmospheric circulation. It turns out that the distribution of dust particles may determine that of water ice particles. The radiative effects of both dust and ice particles are considered in the present approach.
报告人简介:
周剑超,澳门科技大学月球与行星科学国家重点实验室副教授。2001年获得应用数学博士学位,研究兴趣主要是火星沙尘暴的数值模拟。自2016年1月加入澳科大以来,这八年间建立了中国第一个火星大气研究和数值模拟的研究组,并和国外的火星研究机构(如法国国家研究所LMD)建立紧密合作关系。这几年的研究成果解答了一些重要的关于火星沙尘暴大气过程和环流的问题,并在该领域重要的国际期刊上发表论文。周博士的研究组在澳科大开发的多尺度火星气候数值模式可以模拟火星上高分辨率的大气条件—当时是国内唯一一家系统研究火星大气条件及沙尘活动和数值模拟的团队。因此,中国航天局邀请团队为中国首次火星探测任务“天问一号”作高分辨率的大气条件分析,对尘暴发生时的大气条件作评估,复核了航天五院的火星大气设计参数,并为计划提供最优着陆时间的意见。