Stratospheric NO2. II - Global behavior

Details Stratospheric NO2. II - Global behavior Stratospheric NO2. II - Global behavior

Aug 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.5067n&link_type=abstract

Journal of Geophysical Research, vol. 84, Aug. 20, 1979, p. 5067-5076.

Physics

21

Abundance, Atmospheric Composition, Nitrogen Dioxide, Stratosphere, Annual Variations, Atmospheric Chemistry, Cliffs, Daytime, Distribution (Property), Northern Hemisphere, Polar Regions, Tropical Regions, Zonal Flow (Meteorology)

Scientific paper

This paper discusses observations of the total daytime stratospheric column abundance of NO2 made over the range in latitude from 40 deg S to the North Pole. The equatorial abundance is less by a factor of 2 than at midlatitude. A summer maximum in the Northern Hemisphere exists, and the amplitude of the seasonal variation increases from two at midlatitude to over six at 65 deg N. In winter, when there is not a warming in progress in the stratosphere and there is strong zonal flow, there is an abrupt drop in NO2 abundance near 50 deg N. The decrease occurs over only a few degrees of latitude where the temperature near 30 km exhibits a poleward drop as well. During a warming, the 'cliff' disappears as a result of rapid meridional transport of midlatitude stratospheric air into the Arctic.

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