Temperature retrieval from stratospheric O3 and NO3 GOMOS data

Details Temperature retrieval from stratospheric O3 and NO3 GOMOS data Temperature retrieval from stratospheric O3 and NO3 GOMOS data

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3424809m&link_type=abstract

Geophysical Research Letters, Volume 34, Issue 24, CiteID L24809

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Computation

6

Atmospheric Composition And Structure: Middle Atmosphere: Composition And Chemistry, Atmospheric Processes: Data Assimilation, Computational Geophysics: Data Presentation And Visualization

Scientific paper

The chemistry of some species is strongly dependent on temperature. The typical example is the nighttime NO3 chemistry. We use a simple steady state relationship for NO3 to derive temperature from measurements of O3 and NO3 by the satellite GOMOS (Global Ozone Monitoring by Occultation of Stars) instrument. GOMOS-retrieved temperatures are validated against ECMWF (European Centre for Medium range Weather Forecast) temperatures. The temperature between 30 and 40 km can be retrieved with a bias of 3°K and a precision of about 3°K. The small bias can easily be removed by slightly adjusting the temperature-dependency of the NO2 + O3 reaction in the steady state relationship. The results demonstrate that measurements of chemical species contain useful information on the temperature that can be extracted when the temperature-dependent chemistry is known accurately. This temperature-dependency of chemical systems could in the long term be exploited in weather data assimilation system.

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