High-resolution, near-infrared (1.09 to 2.5 micrometers) spectra of the night side of Venus have been obtained in 1990 and 1991 using the Fourier Transform Spectrometer at the 3.6-m Canada-France-Hawaii telescope. Absorptions due to H2O were detected in spectral windows near 2.3, 1.74, and 1.18 micrometers. Our analysis of these absorptions constrains the abundance of water vapor in three different altitude ranges located between the clouds and the surface: 30-40 km, 15-25 km and 0-15 km. A constant water vapor mixing ratio of 30 +/- 15 ppm below the clouds can fit the observations. These values are consistent with recent near-infrared studies of the night side of Venus at lower spectral resolution. The atmosphere of Venus appears to be dryer than originally suggested by the in-situ measurements made by the Pioneer Venus and Venera mass-spectrometers and gas-chromatographs.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Water in the deep atmosphere of Venus from high-resolution spectra of the night side


    Beteiligte:
    De Bergh, C. (Autor:in) / Bezard, B. (Autor:in) / Crisp, D. (Autor:in) / Maillard, J. P. (Autor:in) / Owen, T. (Autor:in) / Pollack, J. (Autor:in) / Grinspoon, D. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1995-04-01



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Water in the Deep Atmosphere of Venus from High-Resolution Spectra of the Night Side

    De Bergh, C. / Bezard, B. / Crisp, D. et al. | British Library Conference Proceedings | 1995


    Gondola Design for Venus Deep-Atmosphere Aerobot Operations

    Jones, Jack A. / Heun, Matthew Kuperus | NTRS | 1997


    Carbon Monoxide in the Deep Atmosphere of Venus

    Taylor, F. W. / International Council of Scientific Unions; Committee on Space Research | British Library Conference Proceedings | 1995


    Carbon Monoxide in the Deep Atmosphere of Venus

    Taylor, F.W. | Online Contents | 1995


    Gondola design for Venus deep-atmosphere aerobot operation

    Heun, Matthew / Jones, Jack / Hall, Jeffery | AIAA | 1998