Physics
Scientific paper
Mar 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jatp...39..317f&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 39, Mar. 1977, p. 317-331.
Physics
3
Airglow, Atmospheric Circulation, Mesosphere, Stratosphere, Stratospheric Warming, Thermosphere, Annual Variations, Geopotential Height, Hydroxyl Emission, Magnetic Disturbances, Nightglow, Solar Activity, Sudden Enhancement Of Atmospherics
Scientific paper
The 5577 A, Na and OH nightglow emissions observed at Haute Provence were examined for possible changes during the stratospheric warming events. It has been found that during the midwinter major warmings the emission intensities exhibit marked increases of the order of 100%, persisting for about a week. In addition, it has been shown by an analysis of the superposed epoch type that the sudden enhancement in the emission intensities occurs almost simultaneously with the splitting of the stratospheric polar vortex. The results may confirm that the influence of the circulation changes associated with the stratospheric warming extends up to at least the lower thermosphere, causing redistributions of photochemical minor constituents by the effect of transport processes and the change of aeronomic properties.
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