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Slowdown in China's methane emission growth.
- Source :
-
National Science Review . Aug2024, Vol. 11 Issue 8, p1-11. 11p. - Publication Year :
- 2024
-
Abstract
- The unprecedented surge in global methane levels has raised global concerns in recent years, casting a spotlight on China as a pivotal emitter. China has taken several actions to curb the methane emissions, but their effects remain unclear. Here, we developed the Global ObservatioN-based system for monitoring Greenhouse GAses for methane (GONGGA-CH4) and assimilate GOSAT XCH4 observations to assess changes in China's methane emissions. We find the average rate of increase in China's methane emissions (0.1 ± 0.3 Tg CH4 yr−2) during 2016–2021 slowed down compared to the preceding years (2011–2015) (0.9 ± 0.5 Tg CH4 yr−2), in contrast to the concurrent acceleration of global methane emissions. As a result, the contribution of China to global methane emissions dropped significantly. Notably, the slowdown of China's methane emission is mainly attributable to a reduction in biogenic emissions from wetlands and agriculture, associated with the drying trend in South China and the transition from double-season to single-season rice cropping, while fossil fuel emissions are still increasing. Our results suggest that GONGGA-CH4 provides the opportunity for independent assessment of China's methane emissions from an atmospheric perspective, providing insights into the implementation of methane-related policies that align with its ambitious climate objectives. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GREENHOUSE gases
*GREENHOUSE gas mitigation
*FOSSIL fuels
*METHANE
*RICE
Subjects
Details
- Language :
- English
- ISSN :
- 20955138
- Volume :
- 11
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- National Science Review
- Publication Type :
- Academic Journal
- Accession number :
- 179665141
- Full Text :
- https://doi.org/10.1093/nsr/nwae223