NO2/NO partitioning as a test of stratospheric ClO concentrations over Antarctica

Details NO2/NO partitioning as a test of stratospheric ClO concentrations over Antarctica NO2/NO partitioning as a test of stratospheric ClO concentrations over Antarctica

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987georl..14..704w&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 14, July 1987, p. 704-706.

Physics

Antarctic Regions, Atmospheric Composition, Chlorates, Nitrogen Dioxide, Nitrous Oxides, Stratosphere, Midlatitude Atmosphere, Photochemical Reactions, Photodissociation

Scientific paper

Physical conditions in the 10-20 km region of the Antarctic stratosphere make the (NO2)/(NO) ratio particularly sensitive to high chlorine levels in the form of ClO. According to simple known photochemical relationships between NO2, NO, ClO, and O3, high ClO levels of 1 ppbv over Antarctica must be accompanied by large values of the (NO2)/(NO) ratio. At high ClO abundances, the (NO2)/(NO) ratio is approximately proportional to the ClO concentration. It is proposed that in-situ measurements of the (NO2)/(NO) ratio could be used to test the high chlorine hypothesis.

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