ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2010, Vol. 7, No. 4, pp. 204-211

Monitoring of carbon dioxide mean tropospheric concentration over Siberian ecosystems from satellite-based high-resolution infrared sounders data

A.V. Kukharsky , A.B. Uspensky 
State Research Center Planeta, Moscow
Due to sparse network of ground-based carbon dioxide (CO2) observations the capabilities and limitations to retrieve
atmospheric column-average CO2 mixing ratio XCO2 from satellite measurements with high-resolution infrared
sounder AIRS (EOS/Aqua) have been investigated. The sensitivity studies have been carried out and a set of the
most informative channels was selected for XCO2 retrieval. The original method to derive mid to high tropospheric
XCO2 from cloud-free AIRS measurements has been developed and tested based on physical inversion algorithm.
The validation exercise carried out with actual AIRS data for two areas in Western Siberia (Novosibirsk and Surgut
regions) and for 10 months of year 2003 demonstrates that the retrieved monthly averaged XCO2 values reproduce
seasonal variations of sought quantities with a precision about 1-2 % comparing to in-situ airborne observations.
AIRS data together with necessary information have been downloaded from NASA site for vast Siberia region (for
July 2003). The developed methodology have been applied to these data for producing the map of spatial ХСО2 distribution
over Siberia.
Keywords: Atmospheric carbon dioxide, IR sounder, AIRS, mixing ratio, inverse problem, radiative model
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