Investigation of Titan's meteorology in the light of the Cassini/Huygens mission by means of a general circulation model

土星S最大的卫星土卫六被厚厚的富含氮气的大气层所包围，具有类似地球的热结构。泰坦S大气代表了在比较行星学背景下研究气象学的杰出自然实验室。综合大气模式，如大气环流模式(GCMS)，已经为理解泰坦S大气引擎的工作原理做出了很大贡献，但低层大气和地面资料的匮乏往往造成数据解释上的模糊。正在进行的卡西尼号/惠更斯号土卫六任务开始揭开低层大气之谜，并为探索土卫六S大气层和地表开辟了新的视角。本次调查的目的是为了了解泰坦动力气象观测资料及其对泰坦S地表和外源地质的意义。这项研究包括利用卡西尼/惠更斯数据对现有的GCM进行重大更新，研究观测到的风廓线和地面与大气之间相互作用的可能机制，以及对现有的泰坦GCM进行基准比较。

Saturn s largest moon Titan is surrounded by a thick nitrogen-rich atmosphere with an Earth-like thermal structure. Titan s atmosphere represents an outstanding natural laboratory to investigate the meteorology in the context of comparative planetology. Comprehensive atmospheric models such as general circulation models (GCMs) have already contributed much to the understanding of how Titan s atmospheric engine may be working, but the scarcity of data from the lower atmosphere and surface often caused ambiguity in the data interpretation. The ongoing Cassini/Huygens mission at Titan is beginning to unveil the enigma of the lower atmosphere and opens new perspectives in the exploration of Titan s atmosphere and surface. The proposed investigation aims at understanding the observed data concerning the dynamic meteorology of Titan and its implication for Titan s surface and exogeneous geology. The study comprises a major update of the existing GCM with Cassini/Huygens data, investigating the possible mechanism of the observed wind profile and the interaction between the surface and atmosphere as well as benchmarking of existing Titan GCMs.