Stratospheric NO and HNO3 observations in the Northern Hemisphere for three seasons

Details Stratospheric NO and HNO3 observations in the Northern Hemisphere for three seasons Stratospheric NO and HNO3 observations in the Northern Hemisphere for three seasons

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978georl...5..531l&link_type=abstract

Geophysical Research Letters, vol. 5, June 1978, p. 531-534.

Physics

5

Annual Variations, Atmospheric Composition, Nitric Acid, Nitric Oxide, Northern Hemisphere, Ozone, Stratosphere, Atmospheric Models, Atmospheric Temperature, Equatorial Atmosphere, Midlatitude Atmosphere, Polar Regions, Vertical Distribution

Scientific paper

NO, HNO3, and O3 levels and air temperature were measured as a function of latitude in the 18 to 21 km region of the stratosphere, and the sum of odd nitrogen, equal to NO + NO2 + HNO3, was calculated and compared with model predictions. (NO2 values were inferred from photochemical equilibrium characteristics.) The data show that NO measurements generally exhibit good agreement with model predictions for low and midlatitudes but poor agreement at high latitudes. The experimental sum of odd nitrogen mixing ratios and model predictions agree within a factor of 2-1/2 or better at both 20 and 40 deg N, and show excellent agreement for latitudinal dependence.

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