Other
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005dps....37.5716w&link_type=abstract
American Astronomical Society, DPS meeting #37, #57.16; Bulletin of the American Astronomical Society, Vol. 37, p.750
Other
1
Scientific paper
The atmospheric chemistry of Venus is dominated by sulfur species, whereas no trace of sulfur in any form has yet been been found in the Martian atmosphere. Nevertheless, possibility of localized plumes of SO2 or H2S, or both on Mars cannot be ruled out, especially in view of the recent detection of trace quantities of methane. Wong et al. (2003, 2005) studied the fate and distribution of sulfur species from any such ``hotspots" on Mars using a photochemical model. We now extend this model to Venus. Due to the large opacity, solar UV photons do not penetrate to denser parts of the Venusian atmosphere to dissociate SO2/H2S/COS. Hence, on Venus the sulfur ``photochemistry" occurs primarily above 50 km. On the other hand, thermochemical processes near the surface of Venus are responsible for supplying the SO2, H2S, and COS gases to the upper atmosphere. In this presentation we compare the photochemical modeling results of Venus with Mars, emphasizing the sulfur chemistry as it might have relevance also to primordial Martian atmosphere.
Wong, A.S, Atreya S.K., Encrenaz, T., JGR 108(E4), 5026, 2003; Wong, A.S, Atreya S.K., Encrenaz, T., (an update of above), JGR, 2005, in press.
Atreya Sushil K.
Wong Ah San
No associations
LandOfFree
Comparative sulfur chemistry of Venus and Mars 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 Comparative sulfur chemistry of Venus and Mars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparative sulfur chemistry of Venus and Mars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-952838