Mars Atmosphere: Modeling and Observations (2008) 9092.pdf A COMPARISON OF MEASUREMENTS OF O2 ( 1 Δ) AND NO AIRGLOW WITH CALCULATIONS

• Main Authors: J. W. Kaminski, A. Akingunola, M. Labbas, F. Daerden, S. Hirst
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Ice cap; polar night
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.217.8594; http://www.lpi.usra.edu/meetings/modeling2008/pdf/9092.pdf

Abstract: GM3 is a multiscale global Mars general circulation model with a vertical domain from the surface to about 160 km [1,2]. It has a water cycle that includes covered ice cap and regolith as well as bulk ice clouds. A simple water, CO2, Ox, HOx, NOx chemistry scheme has first added by Moudden and McConnell [3] and H2O2 chemistry has been investigated by Moudden [4]. We present here a more recent version of the chemistry and focus on airglow as a means of evaluating the chemistry and dynamics of the model. In this case we focus on the O2 ( 1 Δ) airglow and its sources, photolysis of O3 and O self recombination together with its sinks of emission and quenching. We find large values of O2 ( 1 Δ) from O recombination in the polar night with the descent of O rich air from the thermosphere. For NO we note that there is thermospheric production from the ioniszation of N2 and subsequent reactions. As in Moudden and McConnell [3] we have used a N and N ( 2 D) source function based on the work of Jane Fox to calculate NO densities and also NO emission based on recombination. We have compared the GM3 results with the SPICAM observations based on the NO airglow measurements of Bertaux et al [5,6] and related publications and for ozone and O2 ( 1 Δ) the comparisons are based on the work of Federova et al. [7], Pierrier et al. [8] and Bertaix et al. [9]. dayglow by SPICAM IRL seasonal distribution for the first