Transport and photochemical effects seen in stratospheric NO2 amounts

Details Transport and photochemical effects seen in stratospheric NO2 amounts Transport and photochemical effects seen in stratospheric NO2 amounts

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jatp...48.1093m&link_type=abstract

(International Association of Geomagnetism and Aeronomy, Scientific Assembly on Dynamics and Remote Sensing of the Middle Atmosp

Physics

2

Atmospheric Composition, Gas Transport, Nitrogen Dioxide, Photochemical Reactions, Stratosphere, Absorption Spectroscopy, Air Pollution, Annual Variations, Atmospheric Chemistry, Diurnal Variations

Scientific paper

Column contents amounts of NO2 were measured from sites at 45 deg S, 53 deg S, and 78 deg S using long path differential absorption spectroscopy. In spring, the two midlatitude sites exhibit essentially the same smooth winter to summer transition. While this trend is also present in the Antarctic data, large amplitude oscillations with a period of approximately 9 days are superimposed on this trend. These oscillations are explained in terms of transport of midstratospheric air from more poleward or more equatorial latitudes. The observed night-time decay of NO2 is shown to agree with a simple N2O5 chemical conversion scheme.

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