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Article Dans Une Revue Geophysical Research Letters Année : 2024

Unveiling Unprecedented Methane Hotspots in China's Leading Coal Production Hub: A Satellite Mapping Revelation

Ge Han
Zhipeng Pei
Huiqin Mao
  • Fonction : Auteur
Siwei Li
  • Fonction : Auteur
Feiyue Mao
Xin Ma
  • Fonction : Auteur
Xingying Zhang
  • Fonction : Auteur
Wei Gong

Résumé

Abstract China is likely the world's largest anthropogenic source of methane emissions, with coal mine methane (CMM) being the predominant contributor. Here, we deploy 2 years of satellite observations to survey facility‐level CMM emitters in Shanxi, the most prolific coal mining province in China. A total of 138 detected episodic events at 82 facilities are estimated to emit 1.20 (+0.24/−0.20, 95% CI) million tons of methane per year (Mt CH 4 /yr) during 2021–2023, roughly equivalent to 4.2 times the integrated flux from the Permian plumes and four times of the integrated flux from the Four Corners plumes, two of the world's largest hotspots for oil and gas methane emissions. This work reveals the heavy‐tailed distribution characteristic of CMM emission sources for the first time, with 20% of emitters contributing approximately 50% of total emissions. Comparison with the Global Energy Monitor (GEM) inventory reveals that the GEM estimate is about 4.1 times our estimate.
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hal-04589034 , version 1 (27-05-2024)

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Ge Han, Zhipeng Pei, Tianqi Shi, Huiqin Mao, Siwei Li, et al.. Unveiling Unprecedented Methane Hotspots in China's Leading Coal Production Hub: A Satellite Mapping Revelation. Geophysical Research Letters, 2024, 51 (10), ⟨10.1029/2024gl109065⟩. ⟨hal-04589034⟩
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