Optika Atmosfery i Okeana Journal

Vol. 22, issue 02, article # 11

Arshinov M. Yu., Belan B. D., Davydov D. K., Inoue Gen., Maksyutov Sh. Sh., Machida Toshinobu., Fofonov A. V. Spatio-temporal variability of CO₂ and CH₄ concentration in the surface atmospheric layer over West Siberia. // Optika Atmosfery i Okeana. 2009. V. 22. No. 02. P. 183-192 [in Russian].
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Abstract:

In this paper the results of the study of CO₂ and CH₄ spatial distribution over West Siberia, diurnal and annual behavior of their concentrations are presented. This study is based on the data of monitoring network established in recent years. Concentration gradient between northern and southern regions keeps during the whole year. Diurnal behavior of the CH₄ mixing ratio is mainly neutral during the year except for the late spring early summer, when significant amplitude is observed. Carbon dioxide concentration has a pronounced annual behavior with a maximum in December and a minimum in July-August. Two maxima and two minima in the annual behavior of CH₄ concentration are observed in the center of the region under study (maxima: July and December-January; minima: April-May and October). The most interannual variability is observed during main and secondary maxima.

Keywords:

amplitude; year and diurnal behavior; carbon dioxide; methane; site