Search for spatial variations of the H2O abundance in the lower atmosphere of Venus from NIMS-Galileo

Details Search for spatial variations of the H2O abundance in the lower atmosphere of Venus from NIMS-Galileo Search for spatial variations of the H2O abundance in the lower atmosphere of Venus from NIMS-Galileo

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993p%26ss...41..495d&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 41, no. 7, p. 495-504

Astronomy and Astrophysics

Astronomy

40

Abundance, Emission Spectra, Fluorescence, Infrared Spectra, Near Infrared Radiation, Oxygen, Radiance, Venus (Planet), Venus Atmosphere, Water Vapor, Astronomical Spectroscopy, Carbon Monoxide, Galileo Spacecraft, Infrared Spectroscopy, Spaceborne Astronomy

Scientific paper

The spectroscopic data of the Near-Infrared Mapping Spectrometer (NIMS), recorded during the Galileo flyby of Venus, are analysed to retrieve the water vapor abundance variations in the lower atmosphere of Venus at night. The 1.18 micrometer spectral window, which probes altitude levels below 20 km, is used for this purpose. Constraints on the CO2 continuum and far-wing opacity from existing ground-based high-resolution observations are included in the modelling of the NIMS spectra. The NIMS measurements can be fitted with a water vapor mixing ratio of 30 +/- 15 ppm, in agreement with analyses of ground-based nightside observations. The water vapor abundance shows no horizontal variations exceeding 20% over a wide latitude range (40 deg S, 50 deg N) on the nightside of Venus. Within the same selection of NIMS spectra, a large enhancement in the O2 fluorescence emission at 1.27 micrometer is observed at a latitude of 40 deg S, over a spatial area about 100 km wide.

Affiliated with

Also associated with

No associations

Rating

Search for spatial variations of the H2O abundance in the lower atmosphere of Venus from NIMS-Galileo does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Search for spatial variations of the H2O abundance in the lower atmosphere of Venus from NIMS-Galileo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Search for spatial variations of the H2O abundance in the lower atmosphere of Venus from NIMS-Galileo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1073956