Dynamics of the greenhouse gas concentrations in Western Siberia
O.Yu. Antokhina1, P.N. Antokhin1, V.G. Arshinova1, M.Yu. Arshinov1, B.D. Belan1, S.B. Belan1, D.K. Davydov1, N.V. Dudorova1, G.A. Ivlev1, A.V. Kozlov1, O.A. Krasnov1, Sh.Sh. Maksutov2, T. Machida2, M.V. Panchenko1, D.A. Pestunov1, T.M. Rasskazchikova1, D.E. Savkin1, M. Sasakawa2, D.V. Simonenkov1, T.K. Sklyadneva1, G.N. Tolmachev1, A.V. Fofonov1
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
2National Institute for Environmental Studies, Onogawa, Tsukuba, Japan
Keywords: атмосфера, газ, воздух, диоксид углерода, закись азота, метан, озон, примеси, вертикальное распределение, atmosphere, gas, air, carbon dioxide, nitrous oxide, methane, ozone, impurity, vertical distribution
Abstract
According to long-term measurements of concentrations of greenhouse gases in the surface air layer and the free atmosphere trends of changes in their concentrations in Siberia are estimated. It is established that change of concentration of CO2 in a ground layer of air changes across the territory of Siberia from 2.13 to 2.45 ppm/year, concentration of a methane increases with a speed from 5.7 to 16.3 ppb/year. Increase in concentration of greenhouse gases in the free atmosphere happens for CO2 to speed of 2.09 ppm/year in a layer from 0.5 to 7.0 km. A methane increases on average in a layer of 0.5-7.0 km with the rate of 5.1 ppb/year. Concentration of nitrous oxide grows at all heights on average with a trend of 0.78 ppb/year. In comparison with global average rates, the established trends exceed them on CO2 and CH4, and appear less for N2O.
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