Atmospheric observations suggest methane emissions in north-eastern China growing with natural gas use

Autor: Fenjuan Wang, Shamil Maksyutov, Rajesh Janardanan, Aki Tsuruta, Akihiko Ito, Isamu Morino, Yukio Yoshida, Yasunori Tohjima, Johannes W. Kaiser, Xin Lan, Yong Zhang, Ivan Mammarella, Jost V. Lavric, Tsuneo Matsunaga
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Druh dokumentu: article
ISSN: 2045-2322
DOI: 10.1038/s41598-022-19462-4
Popis: Abstract The dramatic increase of natural gas use in China, as a substitute for coal, helps to reduce CO2 emissions and air pollution, but the climate mitigation benefit can be offset by methane leakage into the atmosphere. We estimate methane emissions from 2010 to 2018 in four regions of China using the GOSAT satellite data and in-situ observations with a high-resolution (0.1° × 0.1°) inverse model and analyze interannual changes of emissions by source sectors. We find that estimated methane emission over the north-eastern China region contributes the largest part (0.77 Tg CH4 yr−1) of the methane emission growth rate of China (0.87 Tg CH4 yr−1) and is largely attributable to the growth in natural gas use. The results provide evidence of a detectable impact on atmospheric methane observations by the increasing natural gas use in China and call for methane emission reductions throughout the gas supply chain and promotion of low emission end-use facilities.
Databáze: Directory of Open Access Journals
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