Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005dps....37.5408m&link_type=abstract
American Astronomical Society, DPS meeting #37, #54.08; Bulletin of the American Astronomical Society, Vol. 37, p.742
Astronomy and Astrophysics
Astronomy
1
Scientific paper
Near-infrared spectroscopy of Venus' nightside provides a unique means of probing the lower atmosphere of the planet. Shortward of 2.4 microns, thermal emission from beneath the clouds can be detected in narrow atmospheric windows between the strong CO2 and H2O bands. We observed the night side of Venus in the K-band at the NASA/IRTF using the SpeX spectro-imager, during two Venusian quadratures in Feb. 2003 and Aug. 2004. Our goal is to map the abundances of the gaseous absorbers present in the 2.3-μ m window in order to study the dynamics of the Venusian atmosphere below the cloud layers, and to search for possible sources of sulphur-bearing gases. Latitudinal variations of CO and OCS in the 25-40 km region have been derived and a similar study on H2O is in progress. The CO abundance shows an increase of about 15% from the equatorial region to higher latitudes. Wherever the S/N ratio is good enough, there appears to be an anticorrelation of the CO and OCS distributions.
Bezard Bruno
Birlan Mirel
Encrenaz Th.
Marcq Emmanuel
No associations
LandOfFree
A Preliminary Work to Venus Express : Near IR Spectro-Imagery of the Lower Atmosphere . 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 A Preliminary Work to Venus Express : Near IR Spectro-Imagery of the Lower Atmosphere ., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Preliminary Work to Venus Express : Near IR Spectro-Imagery of the Lower Atmosphere . will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-952580