Vertical distribution of Titan's atmospheric neutral constituents

Details Vertical distribution of Titan's atmospheric neutral constituents Vertical distribution of Titan's atmospheric neutral constituents

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996jgr...10123261l&link_type=abstract

Journal of Geophysical Research, Volume 101, Issue E10, p. 23261-23283

Mathematics

Logic

158

Oceanography: Biological And Chemical: Photochemistry

Scientific paper

The vertical distribution of Titan's neutral atmosphere compounds is calculated from a new photochemical model extending from 40 to 1432 km. This model makes use of many updated reaction rates, and of the new scheme for methane photolysis proposed by Mordaunt et al. [1993]. The model also includes a realistic treatment of the dissociation of N2, of the deposition of water in the atmosphere from meteoritic ablation, and of condensation processes. The sensitivity of the results to the eddy diffusion coefficient profile is investigated. Fitting the methane thermospheric profile and the stratospheric abundance of the major hydrocarbons requires a methane stratospheric mixing ratio of 1.5-2% rather than 3%. Fitting the HCN stratospheric profile requires an eddy diffusion coefficient at 100-300 km that is 5-20 times larger than that necessary for the hydrocarbons. Most species are reasonably well reproduced, with the exception of CH3C2H and HC3N. The formation of CH3CN may involve the reaction of CN with either CH4 or (preferably) C2H6. The observed CO2 profile can be modeled by assuming an external source of water of ~6×106 cm-2s-1. For a nominal CO mixing ratio of 5×10-5, the chemical loss of CO exceeds its production by ~15%, and equilibrium is achieved for CO=1×10-5.

Affiliated with

Also associated with

No associations

Rating

Vertical distribution of Titan's atmospheric neutral constituents 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 Vertical distribution of Titan's atmospheric neutral constituents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vertical distribution of Titan's atmospheric neutral constituents will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1136924