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Related Experiment Video

Updated: May 21, 2025

Design and Use of a Full Flow Sampling System FFS for the Quantification of Methane Emissions
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Global coal trade induces large CH4 emissions.

Jinling Guo1, Junlian Gao1, Kejia Yan2

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|March 19, 2025
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Summary
This summary is machine-generated.

Global coal trade emissions of methane (CH4) surged 3.5 times between 1990-2021. Key exporting nations like Australia, Indonesia, and Russia significantly contribute to these climate-changing emissions.

Keywords:
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Area of Science:

  • Environmental Science
  • Climate Change Research
  • Anthropogenic Emissions Analysis

Background:

  • Coal mining is a significant source of global methane (CH4) emissions, a potent greenhouse gas.
  • Previous research has overlooked methane emissions directly linked to the international coal trade.
  • The global coal trade has experienced substantial growth, necessitating an evaluation of its climate impact.

Purpose of the Study:

  • To investigate the spatiotemporal trends of global coal trade-related methane (CH4) emissions from 1990 to 2021.
  • To identify key regions and nations driving these emissions.
  • To explore potential mitigation strategies for trade-induced CH4 emissions.

Main Methods:

  • Analysis of global coal trade data from 1990 to 2021.
  • Quantification and mapping of methane (CH4) emissions associated with coal trade.
  • Identification of dominant exporting countries and regional emission patterns.

Main Results:

  • Global coal trade-related CH4 emissions increased 3.5-fold, from approximately 1.4 Tg to 6.1 Tg between 1990 and 2021.
  • The Asia-Pacific region shows remarkable growth and prominence in coal trade emissions.
  • Australia, Indonesia, and Russia were the dominant emitters, responsible for 80.4% of trade-related CH4 in 2021.

Conclusions:

  • Coal trade is a substantial and growing contributor to global methane emissions.
  • Hub economies play a critical role in mitigating trade-induced CH4 emissions through energy transitions and technological adoption.
  • Addressing coal trade emissions is crucial for effective climate change mitigation and identifying emission hotspots.