Simulations of OH Nightglow at Sprite Temperature in the MLT Region

Details Simulations of OH Nightglow at Sprite Temperature in the MLT Region Simulations of OH Nightglow at Sprite Temperature in the MLT Region

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsa43a..06h&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #SA43A-06

Other

0300 Atmospheric Composition And Structure, 0310 Airglow And Aurora, 0317 Chemical Kinetic And Photochemical Properties

Scientific paper

Recent observations reveal that temperature in the intense lightning discharge channels during sprite events in the mesosphere could be as high as 20,000 K. As is well known, most of chemical reaction rates are highly dependent on temperature. High temperature may enhance some chemical reactions while at the same time suppress other reactions. This work is aimed to investigate how sensitive are the OH chemical reactions to a temperature as high as the sprite temperature at 20,000 K. Preliminary results, ignoring dynamical effects, seem to indicate that number density of atomic O near 70km is reduced by 13 percents and that of O3 is reduced by 15 percents while the production of OH is greatly enhanced. Further work is underway to refine the model to better match the sprite condition.

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