Measurements of the atmospheric water vapor on Mars by the Imager for Mars Pathfinder

D. V. Titov, W. J. Markiewicz, N. Thomas, H. U. Keller, R. M. Sablotny, Martin G Tomasko, M. T. Lemmon, Peter Smith

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

The Imager for Mars Pathfinder (IMP) was the first instrument to measure the atmospheric water on Mars from its surface. It took the images of the Sun through the Martian atmosphere in five narrowband filters, two in the 0.94 μm H2O band and three in the continuum around it. The observations were carried out in the mornings and in the evenings when the Sun was between 3° and 8° above the horizon. The absorption due to the atmospheric water vapor did not exceed 2%. An average column density of 6±4 precipitated microns (pr μm) was derived from the IMP data. The dependence of the observed H2O transmittance on Sun elevation tentatively implies that the water vapor is not uniformly mixed in the atmosphere but is rather confined to a layer 1-3 km thick near the surface. IMP observations also indicate a horizontal inhomogeneity of the layer but show no significant morning-to-evening variations of the water vapor amount.

Original languageEnglish (US)
Pages (from-to)9019-9026
Number of pages8
JournalJournal of Geophysical Research: Space Physics
Volume104
Issue numberE4
StatePublished - Apr 25 1999

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Mars Pathfinder
Steam
Image sensors
Sun
mars
water vapor
Mars
sun
evening
morning
atmospheres
Martian atmosphere
transmittance
inhomogeneity
horizon
narrowband
continuums
filter
filters
Water

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Atmospheric Science
  • Geochemistry and Petrology
  • Geophysics
  • Oceanography
  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Titov, D. V., Markiewicz, W. J., Thomas, N., Keller, H. U., Sablotny, R. M., Tomasko, M. G., ... Smith, P. (1999). Measurements of the atmospheric water vapor on Mars by the Imager for Mars Pathfinder. Journal of Geophysical Research: Space Physics, 104(E4), 9019-9026.

Measurements of the atmospheric water vapor on Mars by the Imager for Mars Pathfinder. / Titov, D. V.; Markiewicz, W. J.; Thomas, N.; Keller, H. U.; Sablotny, R. M.; Tomasko, Martin G; Lemmon, M. T.; Smith, Peter.

In: Journal of Geophysical Research: Space Physics, Vol. 104, No. E4, 25.04.1999, p. 9019-9026.

Research output: Contribution to journalArticle

Titov, DV, Markiewicz, WJ, Thomas, N, Keller, HU, Sablotny, RM, Tomasko, MG, Lemmon, MT & Smith, P 1999, 'Measurements of the atmospheric water vapor on Mars by the Imager for Mars Pathfinder', Journal of Geophysical Research: Space Physics, vol. 104, no. E4, pp. 9019-9026.
Titov DV, Markiewicz WJ, Thomas N, Keller HU, Sablotny RM, Tomasko MG et al. Measurements of the atmospheric water vapor on Mars by the Imager for Mars Pathfinder. Journal of Geophysical Research: Space Physics. 1999 Apr 25;104(E4):9019-9026.
Titov, D. V. ; Markiewicz, W. J. ; Thomas, N. ; Keller, H. U. ; Sablotny, R. M. ; Tomasko, Martin G ; Lemmon, M. T. ; Smith, Peter. / Measurements of the atmospheric water vapor on Mars by the Imager for Mars Pathfinder. In: Journal of Geophysical Research: Space Physics. 1999 ; Vol. 104, No. E4. pp. 9019-9026.
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