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Temperature retrieval from stratospheric O 3 and NO 3 GOMOS data
Author(s) -
Marchand M.,
Bekki S.,
Lefèvre F.,
Hauchecorne A.
Publication year - 2007
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2007gl030280
Subject(s) - environmental science , data assimilation , atmospheric temperature , atmospheric temperature range , temperature measurement , atmospheric chemistry , ozone , atmospheric sciences , meteorology , remote sensing , physics , thermodynamics , geology
The chemistry of some species is strongly dependent on temperature. The typical example is the nighttime NO 3 chemistry. We use a simple steady state relationship for NO 3 to derive temperature from measurements of O 3 and NO 3 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 NO 2 + O 3 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.