Mars’ water vapor mapping by the SPICAM IR spectrometer: Five martian years of observations

Trokhimovskiy, Alexander; Fedorova, Anna; Korablev, Oleg; Montmessin, Franck; Bertaux, Jean-Loup; Rodin, A. V.; Smith, M. D.

doi:10.1016/j.icarus.2014.10.007

Cited by 108 publications

(79 citation statements)

References 67 publications

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“…However, Phoenix measurements showed no significant difference in H 2 O abundance between 9 h and 16 h (Smith et al, 2009b). Moreover, recent remote-sensing studies by MEX/SPICAM and MGS/TES show that local time variation of total H 2 O column is small at this season (e.g., Pankine and Tamppari, 2015;Trokhimovskiy et al, 2015). The systematic error in the HDO/H 2 O ratio can be estimated to be less than $10%.…”

Section: Latitude [Degrees]mentioning

confidence: 82%

Seasonal variation of the HDO/H2O ratio in the atmosphere of Mars at the middle of northern spring and beginning of northern summer

Aoki

Nakagawa

Sagawa

et al. 2015

Icarus

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Section: Latitude [Degrees]mentioning

confidence: 82%

Seasonal variation of the HDO/H2O ratio in the atmosphere of Mars at the middle of northern spring and beginning of northern summer

Aoki

Nakagawa

Sagawa

et al. 2015

Icarus

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“…The retrieved H 2 O abundances are compared in Fig. 3 with the TES and SPICAM (Trokhimovskiy et al, 2015) data at the same season averaged for three and five martian years, respectively. The H 2 O distribution from the Mars Climate Database (Navarro et al, 2014) is shown as well.…”

Section: Resultsmentioning

confidence: 99%

Variations of the HDO/H2O ratio in the martian atmosphere and loss of water from Mars

Krasnopolsky

2015

Icarus

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“…Observations of annual water vapor column abundances at Mars show seasonal patterns with hemispherical differences (Fedorova et al, ; Maltagliati et al, , ). In the southern hemisphere, water abundances peak between 250° and 300° L s (Trokhimovskiy et al, ). This is attributed to transport from the northern summertime reservoirs during their peak abundance as well as to the sublimation of the southern polar cap.…”

Section: Discussionmentioning

confidence: 99%

The Variability of Atmospheric Deuterium Brightness at Mars: Evidence for Seasonal Dependence

et al. 2017

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The enhanced ratio of deuterium to hydrogen on Mars has been widely interpreted as indicating the loss of a large column of water into space, and the hydrogen content of the upper atmosphere is now known to be highly variable. The variation in the properties of both deuterium and hydrogen in the upper atmosphere of Mars is indicative of the dynamical processes that produce these species and propagate them to altitudes where they can escape the planet. Understanding the seasonal variability of D is key to understanding the variability of the escape rate of water from Mars. Data from a 15 month observing campaign, made by the Mars Atmosphere and Volatile Evolution Imaging Ultraviolet Spectrograph high‐resolution echelle channel, are used to determine the brightness of deuterium as observed at the limb of Mars. The D emission is highly variable, with a peak in brightness just after southern summer solstice. The trends of D brightness are examined against extrinsic as well as intrinsic sources. It is found that the fluctuations in deuterium brightness in the upper atmosphere of Mars (up to 400 km), corrected for periodic solar variations, vary on timescales that are similar to those of water vapor fluctuations lower in the atmosphere (20–80 km). The observed variability in deuterium may be attributed to seasonal factors such as regional dust storm activity and subsequent circulation lower in the atmosphere.

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Mars’ water vapor mapping by the SPICAM IR spectrometer: Five martian years of observations

Cited by 108 publications

References 67 publications

Seasonal variation of the HDO/H2O ratio in the atmosphere of Mars at the middle of northern spring and beginning of northern summer

Seasonal variation of the HDO/H2O ratio in the atmosphere of Mars at the middle of northern spring and beginning of northern summer

Variations of the HDO/H2O ratio in the martian atmosphere and loss of water from Mars

The Variability of Atmospheric Deuterium Brightness at Mars: Evidence for Seasonal Dependence

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