Water vapor in Venus determined by airborne observations of the 8200 Å band
1974; Elsevier BV; Volume: 21; Issue: 3 Linguagem: Inglês
10.1016/0019-1035(74)90035-9
ISSN1090-2643
AutoresT. R. Gull, C. R. O’dell, Robert A. Parker,
Tópico(s)Space Exploration and Technology
ResumoThe region of the 8200 Å Band of H2O was studied in spectra of Venus obtained with an echelle grating spectrograph operated at an altitude of 14.6 km in the NASA Learjet research aircraft. Taking advantage of low foreground absorption, observing at a time of velocity quadrature, differential spectroscopy with respect to lunar spectra, and spectrum averaging, we establish a value of H2O of 3 ± 20 μ for the total path over the entire disk. This value differs from earlier studies of the integrated disk but supports the low values recently derived from infrared bands and by very high spectral resolution groundbased studies.
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