Computer Science
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..451m&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.451
Computer Science
Scientific paper
The SOIR instrument (Solar Occultation in the IR) performs solar occultation measurements in the IR region (2.2 - 4.3 μm) at a resolution of 0.12 cm-1, the highest on board Venus Express. It combines an echelle spectrometer and an AOTF (Acousto-Optical Tunable Filter) for the order selection. The wavelength range probed by SOIR allows for a detailed chemical inventory of the Venus atmosphere at the terminators in the upper mesosphere and lower thermosphere (80 to 180 km) with an emphasis on vertical distribution of the gases. In particular, measurements of CO2 and CO density and rotational temperature vertical profiles have been routinely performed. Comparisons with the hydrostatic equilibrium allowed us to derive information concerning the dynamical behavior of the atmosphere at the terminators. The approach as well as some results will be described.
Bertaux Jean Loup
Carine Vandaele Ann
Drummond Rachel
Mahieux Arnaud
Robert Scott
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