来自火星科学实验室的4个火星年的ACB相位函数观测显示年际和日变化很小，并表明不规则的水-冰晶几何形状

IF 3.2 2区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS Icarus Pub Date : 2025-03-15 Epub Date: 2024-12-21 DOI:10.1016/j.icarus.2024.116437

A.C. Innanen, C.W. Hayes, B.E. Koch Nichol, J.E. Moores

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引用次数: 0

摘要

我们利用火星科学实验室在远日点云带季节进行的观测，将先前研究水冰云相函数的工作扩展到4年（火星年34-37）。从这些相位函数中，我们继续看到火星35-37年的年际或日变化很小，但p=MY 34年的潜在日变化尚未得到很好的理解。我们通过拟合两项Henyey-Greenstein函数，并将我们的结果与模拟水冰晶和尘埃的结果进行比较，使用我们的推导相函数来评论可能的冰晶几何形状。这些结果表明，火星上的云粒子可能具有不规则的几何形状。

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Four Mars Years of ACB Phase Function Observations from the Mars Science Laboratory Show Low Interannual and Diurnal Variability and Suggest Irregular Water–ice Crystal Geometry

We extend previous work examining the water–ice cloud phase function to four years (Mars years 34-37) using observations taken during the Aphelion Cloud Belt season by the Mars Science Laboratory. From these phase functions, we continue to see little interannual or diurnal variability in Mars years 35-37, but potential diurnal variability in p=MY 34, which is not well understood. We use our derived phase functions to comment upon possible ice-crystal geometry by fitting a two-term Henyey–Greenstein function and comparing our results with those of modeled water–ice crystals and dust. These results suggest that cloud particles on Mars could have irregular geometry.

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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.