Rocket observations of atomic oxygen density and airglow emission rate in the WAVE2000 campaign

Details Rocket observations of atomic oxygen density and airglow emission rate in the WAVE2000 campaign Rocket observations of atomic oxygen density and airglow emission rate in the WAVE2000 campaign

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jastp..65.1349i&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 65, Issue 16-18, p. 1349-1360.

Physics

4

Night Airglow, Atomic Oxygen, Rocket Experiment, Atmospheric Wave

Scientific paper

Atomic oxygen density and airglow volume emission rate profiles measured in the rocket experiment S-310-29 carried out as a part of the Waves in Airglow Structures Experiment over Kagoshima in 2000 (WAVE2000) campaign are presented, and the excitation processes of the atomic oxygen 557.7nm line and the molecular oxygen atmospheric band airglow emissions are discussed. The volume emission rate profiles calculated from the measured atomic oxygen densities using the methods and parameters proposed by the ETON campaign (EATON model) are found to well represent the shapes of measured twin-peak emission rate profiles seen during this campaign suggesting that the EATON model is valid for a perturbed atmosphere. There is some discrepancy in the modeled absolute values for the emissions. Applying the model to the current O density measurements results in predicted emission rates that are a factor of 3.2 and 1.5 too high for the 557.7nm line and Atmospheric band, respectively. This suggests either that the atomic oxygen densities of the present campaign are too large by a factor of 1.2(=1.51/2) to 1.5(=3.21/3), or that those of the ETON campaign were too small by the same factor or that the combined errors in both campaigns can account for the discrepancy (the modeled volume emission rates of the 557.7nm line and atmospheric band are roughly in proportion to [O]3 and [O]2, respectively). Our present data findings do not favor the 2-step more than the 1-step excitation process for the atmospheric band because a calculation of the quantum efficiency based on the observed O density does not show a steep gradient around 100km.

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