Rapid deactivation of N(2D) by O - Impact on thermospheric and mesospheric odd nitrogen

Details Rapid deactivation of N(2D) by O - Impact on thermospheric and mesospheric odd nitrogen Rapid deactivation of N(2D) by O - Impact on thermospheric and mesospheric odd nitrogen

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.5419f&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, May 1, 1989, p. 5419-5426. Research supported by FNRS.

Physics

Atomic Physics

24

Atmospheric Chemistry, Deactivation, Mesosphere, Nitrogen, Oxygen, Thermosphere, Atmospheric Models, Odd-Odd Nuclei, Quenching (Atomic Physics), Solar Mesosphere Explorer

Scientific paper

One- and two-dimensional models of thermospheric odd nitrogen are used to explore the consequences of the recently measured fast quenching of N(2D) by O. A large rate coefficient for this reaction profoundly affects the odd-nitrogen chemistry by removing N(2D) as a source of NO and increasing the concentration of N(4S), which destroys NO. The model calculations show that, as the quenching rate increases, the NO and N(2D) densities decrease, while N(4S) densities increase. Comparisons with Atmosphere Explorer and Solar Mesosphere Explorer satellite observations are made. Use of the fast quenching rate in the models causes the NO peak altitude, typically observed near 110 km, to rise to 140 km.

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