全球煤炭贸易导致大量的CH4排放
Jinling Guo1, Junlian Gao1, Kejia Yan2
1School of Management, China University of Mining and Technology (Beijing), Beijing 100083, China.
iScience
|March 19, 2025
概括
在1990年至2021年期间,全球煤炭贸易的甲 (CH4) 排放量增加了3.5倍. 澳大利亚,印度尼西亚和俄罗斯等主要出口国对这些气候变化排放有重大贡献.
科学领域:
- 环境科学 环境科学
- 气候变化研究 气候变化研究
- 人类产生的排放分析分析
背景情况:
- 煤炭开采是全球甲 (CH4) 排放的重要来源,甲是一种强大的温室气体.
- 之前的研究忽略了与国际煤炭贸易直接相关的甲排放.
- 全球煤炭贸易经历了大幅增长,需要对其气候影响进行评估.
研究的目的:
- 研究1990年至2021年全球煤炭贸易相关的甲 (CH4) 排放的时空趋势.
- 确定推动这些排放的关键地区和国家.
- 探索贸易引起的CH4排放的潜在缓解策略.
主要方法:
- 对1990年至2021年全球煤炭贸易数据的分析.
- 量化和绘制与煤炭贸易相关的甲 (CH4) 排放量.
- 确定占主导地位的出口国和区域排放模式.
主要成果:
- 与全球煤炭贸易相关的CH4排放量增加了3.5倍,从1990年至2021年期间的约1.4Tg增加到6.1Tg.
- 亚太地区在煤炭贸易排放方面显示出显著的增长和突出地位.
- 澳大利亚,印度尼西亚和俄罗斯是主要的排放国,在2021年占贸易相关CH4的80.4%.
结论:
- 煤炭贸易是全球甲排放的重要和不断增长的贡献者.
- 枢纽经济体在通过能源转型和技术采用来缓解贸易引起的CH4排放方面发挥着至关重要的作用.
- 解决煤炭贸易排放问题对于有效减缓气候变化和确定排放热点至关重要.
相关概念视频
01:14The Carbon Cycle
36.8K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
36.8K
01:50Global Climate Change
24.0K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
24.0K
01:22The Sulfur Cycle
43.5K
Sulfur, an important element in the chemical makeup of proteins, is recycled through the atmosphere and aquatic and terrestrial environments. Found in the atmosphere as sulfur dioxide (SO2), sulfur is released by decaying organisms, weathered rocks, geothermal vents, volcanos, and burning fossil fuels. It is deposited into the ecosystem, cycled through the biotic community, and either released back into the atmosphere as gas or deposited in marine sediment for long-term storage and eventual...
43.5K
02:14Combustion Energy: A Measure of Stability in Alkanes and Cycloalkanes
6.2K
The low reactivity in alkanes can be attributed to the non-polar nature of C–C and C–H σ bonds. Alkanes, therefore, were initially termed as “paraffins,” derived from the Latin words: parum, meaning “too little,” and affinis, meaning “affinity.”
Alkanes undergo combustion in the presence of excess oxygen and high-temperature conditions to give carbon dioxide and water. A combustion reaction is the energy source in natural gas, liquified...
Alkanes undergo combustion in the presence of excess oxygen and high-temperature conditions to give carbon dioxide and water. A combustion reaction is the energy source in natural gas, liquified...
6.2K
02:12Enthalpy and Heat of Reaction
8.2K
Combustion, commonly known as burning, is a reaction in which a substance reacts with an oxidizing agent, which in most cases is molecular oxygen, to liberate energy in the form of heat, light, or sound. The heat of combustion is also known as the enthalpy of combustion. The energy released when one mole of a substance undergoes complete combustion at constant pressure is called molar heat of combustion. Combustion reactions are exothermic; that is, they release energy, and their...
8.2K