Methane Emission Estimates by the Global High-Resolution Inverse Model Using National Inventories

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http://hdl.handle.net/10138/312128

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Wang , F , Maksyutov , S , Tsuruta , A , Janardanan , R , Ito , A , Sasakawa , M , Machida , T , Morino , I , Yoshida , Y , Kaiser , J W , Janssens-Maenhout , G , Dlugokencky , E J , Mammarella , I , Lavric , J V & Matsunaga , T 2019 , ' Methane Emission Estimates by the Global High-Resolution Inverse Model Using National Inventories ' , Remote Sensing , vol. 11 , no. 21 , 2489 . https://doi.org/10.3390/rs11212489

Title: Methane Emission Estimates by the Global High-Resolution Inverse Model Using National Inventories
Author: Wang, Fenjuan; Maksyutov, Shamil; Tsuruta, Aki; Janardanan, Rajesh; Ito, Akihiko; Sasakawa, Motoki; Machida, Toshinobu; Morino, Isamu; Yoshida, Yukio; Kaiser, Johannes W.; Janssens-Maenhout, Greet; Dlugokencky, Edward J.; Mammarella, Ivan; Lavric, Jost Valentin; Matsunaga, Tsuneo
Contributor: University of Helsinki, Finnish Meteorological Institute
University of Helsinki, INAR Physics
Date: 2019-11
Language: eng
Number of pages: 19
Belongs to series: Remote Sensing
ISSN: 2072-4292
URI: http://hdl.handle.net/10138/312128
Abstract: We present a global 0.1° × 0.1° high-resolution inverse model, NIES-TM-FLEXPART-VAR (NTFVAR), and a methane emission evaluation using the Greenhouse Gas Observing Satellite (GOSAT) satellite and ground-based observations from 2010–2012. Prior fluxes contained two variants of anthropogenic emissions, Emissions Database for Global Atmospheric Research (EDGAR) v4.3.2 and adjusted EDGAR v4.3.2 which were scaled to match the country totals by national reports to the United Nations Framework Convention on Climate Change (UNFCCC), augmented by biomass burning emissions from Global Fire Assimilation System (GFASv1.2) and wetlands Vegetation Integrative Simulator for Trace Gases (VISIT). The ratio of the UNFCCC-adjusted global anthropogenic emissions to EDGAR is 98%. This varies by region: 200% in Russia, 84% in China, and 62% in India. By changing prior emissions from EDGAR to UNFCCC-adjusted values, the optimized total emissions increased from 36.2 to 46 Tg CH4 yr−1 for Russia, 12.8 to 14.3 Tg CH4 yr−1 for temperate South America, and 43.2 to 44.9 Tg CH4 yr−1 for contiguous USA, and the values decrease from 54 to 51.3 Tg CH4 yr−1 for China, 26.2 to 25.5 Tg CH4 yr−1 for Europe, and by 12.4 Tg CH4 yr−1 for India. The use of the national report to scale EDGAR emissions allows more detailed statistical data and country-specific emission factors to be gathered in place compared to those available for EDGAR inventory. This serves policy needs by evaluating the national or regional emission totals reported to the UNFCCC.
Subject: 114 Physical sciences
methane emissions
NTFVAR
GOSAT
EDGARv4.3.2
UNFCCC reports
methane emissions
NTFVAR
GOSAT
EDGARv4.3.2
UNFCCC reports
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