Water Vapor Abundances over Mars North High Latitude Regions: 1996–1999

Sprague, A. L.; Hunten, D. M.; Hill, R. E.; Doose, L. R.; Rizk, B.

doi:10.1006/icar.2001.6652

Cited by 18 publications

(17 citation statements)

References 27 publications

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“…Our measurements (Table 1) are consistent with those taken byViking MAWD (Jakosky and Farmer 1982) and TES (M. Smith, personal communicaion, 2001) for the same season (but different years) and with ground-based measurements of H 2 O taken on dates near our observations (Sprague et al 2001). The HDO observations were taken approximately 1 h after the ozone (above ∼20 km) observations, and the vertical water content derived from them is also presented in Fig.…”

Section: Figmentioning

confidence: 59%

“…According to Viking results (Jakosky and Farmer 1982), recent TES results (Smith 2001), and ground-based observations (Sprague et al 2001), water vapor in the northern hemisphere substantially increases in a short period of time; for instance, near 60…”

Section: Resultsmentioning

confidence: 89%

“…• (Sprague et al 2001). The daily insolation increases rapidly in the northern polar region, raising local temperatures and permitting more water vapor to enter the middle atmosphere.…”

Section: Resultsmentioning

confidence: 99%

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Mapping of Ozone and Water in the Atmosphere of Mars near the 1997 Aphelion

Novak

Mumma

DiSanti

et al. 2002

Icarus

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Section: Figmentioning

confidence: 59%

Section: Resultsmentioning

confidence: 89%

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Mapping of Ozone and Water in the Atmosphere of Mars near the 1997 Aphelion

Novak

Mumma

DiSanti

et al. 2002

Icarus

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“…µm at latitudes between about 60-80 • N both before and after the summer solstice (Sprague et al, 2003). At the same time of TES operations in MY 24 Sprague et al (2001) found 43-76 pr. µm at 75 • N during L S = 105-115 • and 9-17 pr.…”

Section: Introductionmentioning

confidence: 99%

Investigation of water vapor on Mars with PFS/SW of Mars Express

Tschimmel

Ignatiev

Титов

et al. 2008

Icarus

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“…Not long ago, Hunten et al (2000) and Sprague et al (2001) corrected the ground-based observations in the 820-nm band with the aim of taking into account the aerosol scattering. The Earth-based measurements were performed at large phase angles; as a result, the correction turned out to be significant.…”

Section: A a Fedorova A V Rodin And I V Baklanovamentioning

confidence: 99%

Seasonal cycle of water vapor in the atmosphere of mars as revealed from the MAWD/Viking 1 and 2 experiment

2004

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The most detailed information on the seasonal evolution of water vapor distribution in the Martian atmosphere was obtained by the Mars Atmospheric Water Detector (MAWD), which was a five-channel spectrometer operating aboard the Viking 1 and 2 spacecraft in 1977-1980, and from the very recent observations by the Thermal Emission Spectrometer (TES) on the Mars Global Surveyor spacecraft. The TES results show a considerably larger amount of water vapor near the perihelion of Mars (summer in the southern hemisphere) than the estimates based on the MAWD data for this season, which is characterized by the development of global dust storms. The TES and MAWD instruments operated in different spectral regions (20-50 µ m and 1.38 µ m, respectively), and this could result in the aforementioned difference because of the effect of aerosol scattering on the intensity of the H 2 O bands, which becomes significant at short wavelengths. We considered the effect of aerosol scattering on the water vapor content measured in the 1.38-µ m band, taking into account the different geometries of observations, and restored the H 2 O content from the MAWD data with allowance for multiple scattering. We obtained a seasonal and spatial distribution of water vapor that showed better agreement with the TES data and, thus, indicated the stability of the hydrological cycle on Mars. Periodic structures, which could possibly be associated with the influence of the stationary planetary waves, are reliably revealed in the zonal distribution of the atmospheric water vapor. The seasonal variability of the wave structures correlates with variations of the latitude gradient of water vapor. This could indicate that wave processes contribute considerably to the meridional water transport in the Martian atmosphere.

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Water Vapor Abundances over Mars North High Latitude Regions: 1996–1999

Cited by 18 publications

References 27 publications

Mapping of Ozone and Water in the Atmosphere of Mars near the 1997 Aphelion

Mapping of Ozone and Water in the Atmosphere of Mars near the 1997 Aphelion

Investigation of water vapor on Mars with PFS/SW of Mars Express

Seasonal cycle of water vapor in the atmosphere of mars as revealed from the MAWD/Viking 1 and 2 experiment

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