Springtime stratospheric NO2 in Antarctica

Details Springtime stratospheric NO2 in Antarctica Springtime stratospheric NO2 in Antarctica

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984georl..11...73m&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 11, Jan. 1984, p. 73-75.

Physics

41

Antarctic Regions, Atmospheric Composition, Nitrogen Dioxide, Spring (Season), Stratosphere, Vertical Distribution, Absorption Spectroscopy, Polar Regions, Sunlight

Scientific paper

Springtime measurements of column amounts of stratospheric nitrogen dioxide measured by ground based absorption spectroscopy from Scott Base, Antarctica (77.8 deg S, 166.7 deg E) are presented. There is a rapid build up from less than 1 x 10 to the 15th molecules/sq cm at the end of August to about 5 x 10 to the 15th molecules/sq cm by mid October. The period covered is the transition time between winter night, and summer day; and in general the 'overnight' decay of NO2 is small. The decay is most significant at times when the number of hours of sunlight per day exceeds 12 hours. There are large day to day variations in column amounts which indicate that transport is a significant factor.

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