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Methane Emission to the Atmosphere Bazhin N.M. Institute of Chemical Kinetics and Combustion Novosibirsk RUSSIA.

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Presentation on theme: "Methane Emission to the Atmosphere Bazhin N.M. Institute of Chemical Kinetics and Combustion Novosibirsk RUSSIA."— Presentation transcript:

1 Methane Emission to the Atmosphere Bazhin N.M. Institute of Chemical Kinetics and Combustion Novosibirsk RUSSIA

2 Methane in Atmosphere – Concentration 1.8 ppm Content in Atmosphere 5000 Tg (1 Tg = g = 1 mln of tons) Flux 500 Tg /year

3 Methane concentration dependence on time

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5 Methane concentration and world population

6 Methane sources Emission from Swamps, Rice fields, Lakes and Oceans - 44%

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8 Active layer

9 Bubbles formation in rice field model

10 Methane concentrations

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12 Upper border of bubbles position Dimensionless unit of depth

13 Artificial atmospheres: nitrogen - oxygen Kuzmin et all, Limnology and Oceanology

14 If W 1 (z) = W 10 then Transport in region I Border conditions N2N2

15 Transport in region II Main idea: - sink to the bubbles - molar part in the bubbles

16 Border conditions

17 Exponential approximation to W(z) W 1 (z) = W 10 exp(-νz)

18 CH 4 and N 2 concentrations on depth, W 1 (z) = W 10 exp(-νz)

19 Bubbles composition on depth

20 on X1BX1B

21 Active layer

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23 Methane concentration on depth

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