Mesospheric Nitric Oxide and Ozone Measurements in Polar Winter at 69°N

Details Mesospheric Nitric Oxide and Ozone Measurements in Polar Winter at 69°N Mesospheric Nitric Oxide and Ozone Measurements in Polar Winter at 69°N

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999adspr..24.1665i&link_type=abstract

Advances in Space Research, Volume 24, Issue 12, p. 1665-1668.

Computer Science

Scientific paper

Two rocket experiments were carried out just before and after the polar night at Andoya (69°N), Norway to investigate transport of nitric oxide produced by auroral processes into the middle atmosphere and its influence on the ozone chemistry. Nitric oxide densities of (2-5) × 108cm-3 found in the 70-90 km region are one to two orders of magnitude larger than those at middle latitudes. The influence on ozone densities in the 70-90 km region due to such enhanced nitric oxide abundance is found to be insignificant as compared to that due to transport in the middle of February. The larger ozone densities found in February (in spite of longer sunlit duration) than in November in the 40-60 km region again support predominance of transport over photochemical loss

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