Moisture cycles in Jezero crater, Mars

IF 2.5 2区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS Icarus Pub Date : 2024-08-28 DOI:10.1016/j.icarus.2024.116283

引用次数: 0

Abstract

Diurnal and annual water cycles are studied during the first year of Perseverance rover in Jezero, using observations from the Mars Environmental Dynamics Analyzer (MEDA) and column modeling. Areal values for the ground thermal inertia (TI) and albedo are first found at one site by fitting model temperatures to the observed air temperatures. Areal soil porosity and the initial water vapor volume mixing ratios (vmr) are next found via model-vmr fits to the observation-based vmr. The meteorology and physics of the modeled air and subsurface diurnal moisture cycle at the site is then discussed in detail. The process of fit to observations is finally extended to fourteen sites along the Perseverance track, resulting in estimates for areal TI, albedo and porosity at these sites, and in MEDA-based initial estimates for the annual and diurnal moisture cycles at Jezero during MY36.

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火星杰泽罗环形山的水分循环

利用火星环境动力学分析仪（MEDA）的观测数据和柱状模型，研究了毅力号漫游车在杰泽罗第一年的昼夜和年水循环情况。通过将模型温度与观测到的气温进行拟合，首先在一个站点找到了地面热惯性（TI）和反照率的平均值。然后，详细讨论了该站点模型空气和地下昼夜湿度循环的气象学和物理学。最后，将观测数据的拟合过程扩展到沿 Perseverance 轨道的 14 个站点，从而估算出这些站点的面积 TI、反照率和孔隙度，以及基于 MEDA 的杰泽罗在 MY36 期间的年水汽循环和日水汽循环的初步估算值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Icarus 地学天文-天文与天体物理

CiteScore

6.30

自引率

18.80%

发文量

356

审稿时长

2-4 weeks

期刊介绍： Icarus is devoted to the publication of original contributions in the field of Solar System studies. Manuscripts reporting the results of new research - observational, experimental, or theoretical - concerning the astronomy, geology, meteorology, physics, chemistry, biology, and other scientific aspects of our Solar System or extrasolar systems are welcome. The journal generally does not publish papers devoted exclusively to the Sun, the Earth, celestial mechanics, meteoritics, or astrophysics. Icarus does not publish papers that provide "improved" versions of Bode''s law, or other numerical relations, without a sound physical basis. Icarus does not publish meeting announcements or general notices. Reviews, historical papers, and manuscripts describing spacecraft instrumentation may be considered, but only with prior approval of the editor. An entire issue of the journal is occasionally devoted to a single subject, usually arising from a conference on the same topic. The language of publication is English. American or British usage is accepted, but not a mixture of these.