Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.4509y&link_type=abstract
American Astronomical Society, DPS meeting #39, #45.09; Bulletin of the American Astronomical Society, Vol. 39, p.503
Astronomy and Astrophysics
Astronomy
Scientific paper
Recent high quality data of OCS from ground-based and Venus Express observations provide a unique opportunity to test our understanding of chemistry and transport in the atmosphere of Venus. OCS is produced by heterogeneous reactions on the surface; the middle atmosphere is a net sink for OCS. Thus, the spatial distribution of OCS in the middle atmosphere of Venus reflects a sensitive balance between chemistry and transport. A simple two-dimensional chemistry and transport (CTM) model is used to study the spatial distribution of OCS in the lower atmosphere of Venus. The residual circulation and horizontal eddy diffusivities are derived from winds from Lee et al's (2007) general circulation model. The results from our 2-D CTM are compared to recent observations. There is generally good agreement between the model and data. The sulfur chemistry in the lower atmosphere of Venus remains highly uncertain. New laboratory experiments and observations are urgently needed.
Bezard Bruno
Jiang Xudong
Lee Chaohong
Liang Manlai
Marcq Emmanuel
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