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Dynamical influences on atomic oxygen and 5577 Å emission rates in the lower thermosphere
Author(s) -
Angelats i Coll M.,
Forbes J. M.
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/98gl00130
Subject(s) - thermosphere , atmospheric sciences , zonal and meridional , airglow , diffusion , eddy diffusion , atmospheric tide , oxygen , environmental science , atomic oxygen , physics , ionosphere , meteorology , geophysics , thermodynamics , turbulence , quantum mechanics
Effects of the mean meridional circulation, diurnal and semidiurnal tides, and eddy and molecular diffusion on O concentrations and 5577 Å emission rates are examined. Vertical winds play an important role in producing variations in these quantites, and accounting for the equatorial emission rate structures inferred from the WINDII experiment on UARS. Smaller secondary effects are produced by tidal variations in the major species concentrations and in temperature‐dependent chemical reaction rates.