Baroclinic waves observed on Mars from InSight data

IF 2.5 2区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Icarus Pub Date : 2024-10-29 DOI:10.1016/j.icarus.2024.116361

引用次数: 0

Abstract

Baroclinic waves has been observed in the Martian atmosphere, and their periods have been calculated by means of spectral analysis of the pressure and wind velocity data, provided by the InSight mission for the time periods of the spring and winter seasons. For the spring time, the pressure spectrum shows a peak at the frequency of 0.246 (4 sol). For the winter time, the spectra of the pressure and wind velocity show a dominant peak at the frequency of ∼0.15 (6.7 sol), and a smaller peak at the frequency of ∼0.435 (2.3 sol). The results of this study are consistent with those determined in previous studies from spectral analysis of the Viking 2 data, and it is expected that a further analysis of the results determined in this study will provide a valuable insight into the seasonal changes of the atmospheric structure and circulation, which may be useful to fit General Circulation Models of the Martian atmosphere. However, a general understanding of Martian baroclinic phenomena only will be achieved with a combination of data from multiple Martian midlatitude stations in future missions.

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根据 InSight 数据在火星上观测到的巴洛克波

在火星大气中观测到了巴罗克林波，并通过对 InSight 飞行任务提供的春季和冬季压力和风速数据进行频谱分析，计算出了它们的周期。在春季，压力频谱显示出频率为 0.246（4 索尔）的峰值。在冬季，压力和风速频谱在频率 ∼0.15 （6.7 个太阳）处显示出一个主峰，在频率 ∼0.435 （2.3 个太阳）处显示出一个较小的峰值。本研究的结果与以往研究中通过对海盗 2 号数据进行光谱分析而确定的结果相一致，预计对本研究确定的结果进行进一步分析将对大气结构和环流的季节性变化提供有价值的见解，这可能有助于拟合火星大气的一般环流模型。不过，只有在今后的飞行任务中结合多个火星中纬度站的数据，才能对火星的气压现象有一个总体的了解。

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.