Mathematics – Logic
Scientific paper
Jan 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jgra..10901308s&link_type=abstract
Journal of Geophysical Research, Volume 109, Issue A1, CiteID A01308
Mathematics
Logic
4
Atmospheric Composition And Structure: Airglow And Aurora, Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Atmospheric Composition And Structure: Middle Atmosphere-Constituent Transport And Chemistry (3334), Atmospheric Composition And Structure: Ion Chemistry Of The Atmosphere (2419, 2427), Atmospheric Composition And Structure: Thermosphere-Composition And Chemistry
Scientific paper
The present paper deals with the morphological (volume emission rate as a function of altitude and latitude) study of greenline dayglow emission under equinox conditions. The morphology is obtained from the emission profiles of greenline dayglow emission using the/glow model. The/glow model is updated by incorporating newly discovered temperature dependent rate coefficient of the reaction N2 (A3Σu+) + O. The recently proposed correction for the atomic oxygen density in MSIS 90 neutral atmosphere model is also included at mesospheric altitudes to achieve the consistency with the WINDII measurements in this altitude region. The modeled morphology of greenline dayglow emission is presented between 50°S and 50°N latitudes for the months of March and April. It has been found that this emission shows asymmetry between the northern and the southern hemispheres. The uneven transport of atomic oxygen due to dynamical processes in both the hemispheres plays an important role in producing the asymmetry in the mesospheric region. The asymmetry in the thermospheric region is likely due to the changing contributions with altitude of the various sources which are responsible for the production of O(1S) during the daytime.
Singh Vir
Upadhayaya Arun Kumar
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