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Aerial navigation on Mars requires vision-based pipelines that are robust to the diverse illumination conditions and terrain morphology of the Martian surface. A key bottleneck for training and evaluating such methods is the scarcity of…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Dario Pisanti , Georgios Georgakis

We extracted a Martian water-ice cloud climatology from OMEGA data covering 7 Martian years (MY 26-32). We derived two products, the Reversed Ice Cloud Index (ICIR) and the Percentage of Cloudy Pixels (PCP), indicating the mean cloud…

The Martian climate is governed by an annual cycle, that results in the condensation of CO$_{2}$ ice during winter, up to a meter thick at the pole and thousands of kilometers in extension. Water and dust may be trapped during the…

Earth and Planetary Astrophysics · Physics 2018-08-15 François Andrieu , Frédéric Schmidt , Sylvain Douté , Eric Chassefière

Condensation and sublimation of ices at the surface of the planet is a key part of both the Martian H$_2$O and CO$_2$ cycles, either from a seasonal or diurnal aspect. While most of the ice is located within the polar caps, surface frost is…

Observations of water ice clouds and aerosols on Mars can provide important insights into the complexity of the water cycle. Recent observations have indicated an important link between dust activity and the water cycle, as intense dust…

Recent discoveries of anomalously bright radar reflections below the Mars South Polar Layered Deposit (SPLD) have sparked new speculation that liquid water may be present below the ice cap. The reflections, discovered in data acquired by…

Earth and Planetary Astrophysics · Physics 2021-07-09 Daniel E. Lalich , Alexander G. Hayes , Valerio Poggiali

We use observations from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) of the north polar cap during late summer for two Martian years, to monitor the complete summer cycle of albedo and water ice grain size in order to…

Earth and Planetary Astrophysics · Physics 2015-01-12 Adrian J. Brown , Wendy M. Calvin , Patricio Becerra , Shane Byrne

We investigate the global seasonal variations of near-surface relative humidity and relevant attributes, like temperature and water vapor volume mixing ratio on Mars using calculations from modelled and measurement data. We focus on 2 am…

Earth and Planetary Astrophysics · Physics 2019-07-24 B. Pál , Á. Kereszturi , F. Forget , M. D. Smith

We use the Mars Regional Atmospheric Modeling System (MRAMS) to simulate lake storms on Mars, finding that intense localized precipitation will occur for lake size >=10^3 km^2. Mars has a low-density atmosphere, so deep convection can be…

Earth and Planetary Astrophysics · Physics 2011-07-28 Edwin S. Kite , Timothy I. Michaels , Scot Rafkin , Michael Manga , William E. Dietrich

The time evolution of atmospheric dust at high southern latitudes on Mars has been determined using observations of the south seasonal cap acquired in the near infrared (1-2.65 {\mu}m) by OMEGA/Mars Express in 2005. Observations at…

Earth and Planetary Astrophysics · Physics 2011-03-07 Mathieu Vincendon , Yves Langevin , François Poulet , Jean-Pierre Bibring , Brigitte Gondet , Denis Jouglet , OMEGA Team

We present a map of the near subsurface hydrogen distribution on Mars, based on epithermal neutron data from the Mars Odyssey Neutron Spectrometer. The map's spatial resolution is approximately improved two-fold via a new form of the pixon…

Channel networks on the plateau adjacent to Juventae Chasma have the highest drainage densities reported on Mars.We model frozen precipitation on the Juventae plateau,finding that the trigger for forming these channel networks could have…

Earth and Planetary Astrophysics · Physics 2015-05-20 Edwin S. Kite , Scot C. R. Rafkin , Timothy Michaels , William E. Dietrich , Michael Manga

In this paper we show that Sun-viewing images obtained by the Mars Science Laboratory (MSL) Navigation Cameras (Navcam) can be used for retrieving the dust optical depth and constrain the aerosol physical properties at Gale Crater by…

Earth and Planetary Astrophysics · Physics 2020-09-02 H. Chen-Chen , S. Perez-Hoyos , A. Sanchez-Lavega

Remote sensing observations and Mars rover missions have recorded the presence of beaches, salt lakes, and wind erosion landforms in Martian sediments. All these observations indicate that Mars was hydrated in its early history. There used…

Geophysics · Physics 2025-01-16 Fanwei Meng , Xiaopeng Wang , André Antunes , Jie Zhao , Guoliang Zhou , Biqiong Wu , Tianqi Hao

Here we discuss one of the current reservoirs of water on Mars, the regolith and rocks exposed at the surface. This reservoir is characterized by the presence of H_{2}O- and OH- bearing phases that produce a broad absorption at a wavelength…

We measure the visible and near-infrared reflectance of icy analogues of the Martian surface made of CO$_2$ ice associated in different ways with H$_2$O ice and the regolith simulant JSC Mars-1. Such experimental results obtained with…

Earth and Planetary Astrophysics · Physics 2022-07-29 Zuriñe Yoldi , Antoine Pommerol , Olivier Poch , Nicolas Thomas

We present the first systematic study of clouds observed during twilight on Mars. We analyze images obtained by the Visual Monitoring Camera (VMC) on Mars Express between 2007 and 2020. Using an automated retrieval algorithm we found 407…

Earth and Planetary Astrophysics · Physics 2021-04-07 J. Hernandez-Bernal , A. Sanchez-Lavega , T. del Rio-Gaztelurrutia , R. Hueso , E. Ravanis , A. Cardesin-Moinelo , S. Wood , D. Titov

The Martian atmosphere experiences large diurnal variations due to the ~24.6 h planetary rotation and its low heat capacity. Understanding such variations on a planetary scale is limited due to the lack of observations, which are greatly…

Seasonal frosting and defrosting on the surface of Mars is hypothesized to drive both climate processes and the formation and evolution of geomorphological features such as gullies. Past studies have focused on manually analyzing the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Gary Doran , Serina Diniega , Steven Lu , Mark Wronkiewicz , Kiri L. Wagstaff

Mars' tadpole craters are small, young craters whose crater rims are incised by one or more exit breaches but lack visible inlets. The tadpole forming climate records the poorly understood drying of Mars since the Early Hesperian. A third…

Earth and Planetary Astrophysics · Physics 2024-07-17 Alexandra O. Warren , Sharon A. Wilson , Alan Howard , Axel Noblet , Edwin S. Kite