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- Title
Estimating the global flux of methane into the atmosphere and its seasonal variations.
- Authors
Adushkin, V.; Kudryavtsev, V.
- Abstract
A new method of estimating the global fluxes of methane into the Earth's atmosphere is proposed. This method allows one to take into account the whole spectrum of methane sources irrespectively of their location and calculate seasonal variations in methane fluxes. The results of numerical calculations of the amount of methane emitted into the atmosphere on the basis of this method are supported by data obtained from field measurements. In the Northern Hemisphere (NH), during fall, maximum concentrations of CH are due to methane sources in the arctic region which have not been taken into account before. For the condition of balance between the emission and sink of methane to be fulfilled, the total capacity of its sources amounts to no less than ∼530 Tg/year for the NH and ∼470 Tg/year for the Southern Hemisphere (SH). The results of our calculations and an analysis of the behavior of the concentration and mass of methane in the Earth's hemispheres show that the global flux of methane from the surfaces of the lithosphere and ocean into the atmosphere may amount to more than ∼1000 Tg/year.
- Subjects
NORTHERN Hemisphere; ESTIMATION theory; NUMERICAL calculations; DATA analysis; METHANE; SINKS (Atmospheric chemistry)
- Publication
Izvestiya, Atmospheric & Oceanic Physics, 2013, Vol 49, Issue 2, p128
- ISSN
0001-4338
- Publication type
Article
- DOI
10.1134/S0001433813020023