29 November 2016 Methane emission from Western Siberia’s wetland ecosystems in the first half of the XXI century
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Proceedings Volume 10035, 22nd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 1003565 (2016) https://doi.org/10.1117/12.2248894
Event: XXII International Symposium Atmospheric and Ocean Optics. Atmospheric Physics, 2016, Tomsk, Russian Federation
Abstract
Interannual variability of methane (CH4) emission from wetland ecosystems of Western Siberia in 2000-2050 has been investigated. Calculations of CH4 emission were performed using an approach, in which the total daily methane flux was determined by degree days of the soil and its moisture content as well as available supply of organic substance. Required characteristics of the soil were obtained using the Community Land Model (CLM4.5), coupled with the Regional Climate Model (RegCM4). The model was driven by the data of NCEP-DOE Atmospheric Model Intercomparison Project reanalysis (NCEP-DOE AMIP-II (R2)) and Hadley Global Environment Model 2 - Earth System (HadGEM2- ES) within the Representative Concentration Pathway 4.5 (RCP 4.5) and RCP 8.5 radiative forcing scenarios as initial and lateral boundary conditions. It was found that the average value of the emission in 2000-2013 is 4.34 Tg/yr. Expected increase of methane emission in 2041-2050 relative to the 2001-2010 period is 0.58 Tg/yr with 0.18±0.06 Tg/10 yrs trend for the RCP 8.5 scenario. For the scenario RCP 4.5, increase of methane emission is negligible.
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Konstantin M. Makushev, Konstantin M. Makushev, Anatoly A. Lagutin, Anatoly A. Lagutin, Nikolay V. Volkov, Nikolay V. Volkov, Egor Yu. Mordvin, Egor Yu. Mordvin, } "Methane emission from Western Siberia’s wetland ecosystems in the first half of the XXI century", Proc. SPIE 10035, 22nd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 1003565 (29 November 2016); doi: 10.1117/12.2248894; https://doi.org/10.1117/12.2248894
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