Mars water vapor abundance from SPICAM IR spectrometer: Seasonal and geographic distributions

Fedorova, Anna; Korablev, Oleg; Bertaux, Jean-Loup; Rodin, A. V.; Kiselev, Alexander V.; Perrier, S.

doi:10.1029/2006je002695

Cited by 92 publications

(95 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Seasonal water reservoirs include water ice on or within the seasonal or residual polar caps, surface or subsurface ice in high-latitude regions, physically adsorbed and chemically-bound water within the near-surface regolith, and possibly surface and subsurface liquid water in the form of liquid saline solutions (brine) (Jakosky 1985). Satellite and telescopic observations of variations in the integrated H 2 O column abundance (Conrath et al 1973;Jakosky and Farmer 1982;Sprague et al 1996;Smith 2004;Fedorova et al 2006;Fouchet et al 2007;Melchiorri et al 2006), in combination with numerical modeling, have been used to determine the relative importance of the various processes controlling the seasonal H 2 O cycle (Flasar and Goody 1976;Jakosky and Farmer 1982;Haberle and Jakosky 1990;Richardson and Wilson 2002;Böttger et al 2005). The seasonal H 2 O cycle is important for the Martian climate because it leads to the formation and affects the stability of water ice deposits on the surface and of water ice clouds in the atmosphere (Jakosky and Haberle 1992;Richardson and Wilson 2002;Smith et al 1997;Haberle et al 1999;Montmessin et al 2004;Madeleine et al 2012).…”

Section: Figmentioning

confidence: 99%

The Modern Near-Surface Martian Climate: A Review of In-situ Meteorological Data from Viking to Curiosity

et al. 2017

View full text Add to dashboard Cite

We analyze the complete set of in-situ meteorological data obtained from the Viking landers in the 1970s to today's Curiosity rover to review our understanding of the modern near-surface climate of Mars, with focus on the dust, CO 2 and H 2 O cycles and their impact on the radiative and thermodynamic conditions near the surface. In particular, we provide values of the highest confidence possible for atmospheric opacity, atmospheric pressure, near-surface air temperature, ground temperature, near-surface wind speed and direction, and near-surface air relative humidity and water vapor content. Then, we study the diurnal, seasonal and interannual variability of these quantities over a span of more thanThe original version of this article was revised because due to an unfortunate turn of events a wrong value was published in Table 1. The resolution of the PHX pressure sensor was published as "0.1 mbar" whereas this value has now been corrected to "0.1 Pa" which is the correct value and should be regarded as the final version by the reader. B G.M. Martínez

show abstract

Section: Figmentioning

confidence: 99%

The Modern Near-Surface Martian Climate: A Review of In-situ Meteorological Data from Viking to Curiosity

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The south summer is characterized by the presence of a maximum of water vapor ( Fedorova et al (2006); ; Sprague et al (2006)); Smith (2002)) which is supposed to be produced by the sublimation of the water ice in the SPR.…”

Section: Omega Observationsmentioning

confidence: 99%

“…Recent observations have shown a highly spatial and temporal variability (Fedorova et al (2006); Sprague et al (2006); Encrenaz et al (2005)), especially concerning the Polar Regions . It is not yet clear in which proportion these variabilities are locally produced or if they are redistributed dynamically in/by the atmosphere.…”

Section: Introductionmentioning

confidence: 99%

OMEGA/Mars Express: South Pole Region, water vapor daily variability

Melchiorri

Encrenaz

Drossart

et al. 2009

Icarus

View full text Add to dashboard Cite

Polar regions on Mars are the most suitable places to observe water vapor daily variability because in any observation crossing the Pole we can observe very different local time and because the poles are considered to be the main permanent and seasonal water reservoir of the planet.We report on a daily variability of water vapor in the south pole region (SPR), observed by OMEGA/Mars Express during the south spring-summer period (Ls∼250 • -270 • ) outside the CO 2 ice cap, that has never been observed before by other instruments. We have been able to estimate an increase of few precipitable microns during the day.A possible scenario includes the presence of regolith, or another component that could gather water from the atmosphere, adsorbing the water into the surface during the night time and desorbing it as soon as the sun reaches sufficient height to heat the ground. This hypothesis is even more plausible considering the presence of observed local enhancements in the morning sections associated with the illumination of the Sun and the We report on a daily variability of water vapor in the south pole region (SPR), observed by OMEGA/Mars Express during the south spring-summer period (Ls∼250 • -270 • ) outside the CO 2 ice cap, that has never been observed before by other instruments. We have been able to estimate an increase of few precipitable microns during the day.A possible scenario includes the presence of regolith, or another component that could gather water from the atmosphere, adsorbing the water into the surface during the night time and desorbing it as soon as the sun reaches sufficient height to heat the ground. This hypothesis is even more plausible considering the presence of observed local enhancements in the morning sections associated with the illumination of the Sun and the total absence in the data of water ice.

show abstract

“…The RH values that can be achieved are within the range of partial pressure of water vapor near the surface of Mars. [14] By way of an example, Table 1 shows the RH values that can be reached at given vacuum levels and sample temperatures inside the PEACh. A note must be made that the RH measured at pressure below than 10 mbar are subject to large instrumental error.…”

Section: Environmental Controlmentioning

confidence: 99%

A planetary environment and analysis chamber (PEACh) for coordinated Raman–LIBS–IR measurements under planetary surface environmental conditions

Sobrón¹,

Wang²

2011

J Raman Spectroscopy

View full text Add to dashboard Cite

A planetary environment and analysis chamber (PEACh) has been developed at Washington University in St. Louis, in order to perform in situ multiple spectroscopic measurements on geological samples under relevant planetary environmental conditions and to support future planetary missions, with particular interest on Mars. The pressure in the chamber can range from ambient to 3 × 10 −2 mbar. The simulated atmospheric composition and pressure are regulated via a combination of needle and ball valves connecting the chamber with containers filled with premixed gas. The temperature of the samples can be controlled in a range from ambient to −100 • C. The in situ analytical techniques implemented (and to be implemented) are laser Raman spectroscopy, laser-induced breakdown spectroscopy (LIBS), near-IR reflectance spectroscopy, mid-IR attenuated total reflectance spectroscopy, and microscopic imaging. The coordinated spectroscopic sensing on the same geological sample under well-controlled atmospheric conditions in the PEACh establishes a way to link the results from the laboratory experiments to the spectral data obtained by landed and orbital planetary exploration missions, which will facilitate understanding the surface processes by which mineral phases occur and their association with atmospheric changes.

show abstract

Mars water vapor abundance from SPICAM IR spectrometer: Seasonal and geographic distributions

Cited by 92 publications

References 53 publications

The Modern Near-Surface Martian Climate: A Review of In-situ Meteorological Data from Viking to Curiosity

The Modern Near-Surface Martian Climate: A Review of In-situ Meteorological Data from Viking to Curiosity

OMEGA/Mars Express: South Pole Region, water vapor daily variability

A planetary environment and analysis chamber (PEACh) for coordinated Raman–LIBS–IR measurements under planetary surface environmental conditions

Contact Info

Product

Resources

About