Satellite observations of high nighttime ozone at the equatorial mesopause

Anne Smith, Daniel Marsh, III Russell J. M., M. G. Mlynczak, F. Javier Martin-Torres, Erkki Kyrola

Research output: Contribution to conferencePaper

Abstract

Measurements by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument enable the characterization of the seasonal variation of ozone and temperature in the upper mesosphere. These are the first global measurements that resolve both the structure of the secondary ozone maximum at night and the temperature. The average nighttime mixing ratios at the altitude of the maximum vary with latitude and season. Analysis shows that the highest mixing ratios are clustered near the equator during equinoxes. The high ozone mixing ratios are observed in exactly the place and time at which the diurnal tide is largest. The diurnal tidal phase is such that coldest temperatures at 95 km occur near midnight. The high ozone is coincident with local regions that have both low temperature and low amounts of atomic hydrogen. The same seasonal and latitudinal characteristics are seen in ozone density measured by GOMOS (Global Ozone Monitoring by Occultation of Stars).

Original languageEnglish
Publication statusPublished - 1 Jan 2008
Event37th Scientific Assembly of the Committee on Space Research and Associated Events: COSPAR 2008 - Palais des Congrès de Montréal, Montreal, Canada
Duration: 14 Jul 2008 → …

Conference

Conference37th Scientific Assembly of the Committee on Space Research and Associated Events
CountryCanada
CityMontreal
Period14/07/08 → …

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    Smith, A., Marsh, D., Russell J. M., III., Mlynczak, M. G., Martin-Torres, F. J., & Kyrola, E. (2008). Satellite observations of high nighttime ozone at the equatorial mesopause. Paper presented at 37th Scientific Assembly of the Committee on Space Research and Associated Events, Montreal, Canada. https://ui.adsabs.harvard.edu/abs/2008cosp...37.2960S