Determination of hydrocarbon abundances and the strength of eddy mixing in the stratosphere of Neptune: Analysis of UVS solar occultation lightcurves

Details Determination of hydrocarbon abundances and the strength of eddy mixing in the stratosphere of Neptune: Analysis of UVS solar occultation lightcurves Determination of hydrocarbon abundances and the strength of eddy mixing in the stratosphere of Neptune: Analysis of UVS solar occultation lightcurves

Nov 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995cpi..rept.....b&link_type=abstract

Final Report Computational Physics, Inc., Fairfax, VA.

Statistics

Computation

Abundance, Atmospheric Circulation, Atmospheric Models, Hydrocarbons, Neptune (Planet), Neptune Atmosphere, Photochemical Reactions, Infrared Radiation, Light Curve, Lyman Alpha Radiation, Methane Stratosphere, Vortices

Scientific paper

Work on completing our analysis of the Voyager UVS solar occultation data acquired during Neptune encounter is essentially complete, as testified by the attached poster materials. The photochemical modeling addresses the recent revision in branching ratios for radical production in the photolysis of methane at H Lyman alpha implied by the lab measurements of Mordaunt et al. (1993). The software generated in this effort has been useful for checking the degree to which photochemical models addressing other datasets (mainly infrared) are consistent with the UVS data. This work complements the UVS modeling results in that the IR data refer to deeper pressure levels; as regards the modeling of UVS data, the most significant result is the convincing support for the presence of a stagnant lower stratosphere. Evidence for strong dynamical (mixing) transport of minor constituents at shallower pressures is provided by the UVS data analysis.

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