Anthropogenic methane emissions from China are likely greater than in any other country in the world. The largest fraction of China’s anthropogenic emissions is attributable to coal mining, but these emissions may be changing; China enacted a suite of regulations for coal mine methane (CMM) drainage and utilization that came into full effect in 2010. Here, we use methane observations from the GOSAT satellite to evaluate recent trends in total anthropogenic and natural emissions from Asia with a particular focus on China. We find that emissions from China rose by 1.1 ± 0.4 Tg CH4 yr−1 from 2010 to 2015, culminating in total anthropogenic and natural emissions of 61.5 ± 2.7 Tg CH4 in 2015. The observed trend is consistent with pre-2010 trends and is largely attributable to coal mining. These results indicate that China’s CMM regulations have had no discernible impact on the continued increase in Chinese methane emissions.
展开▼
机译：中国的人为甲烷排放量可能超过世界上任何其他国家。中国人为排放量的最大部分归因于煤矿开采，但这些排放量可能正在发生变化。中国颁布了一套有关煤矿瓦斯排放和利用的法规，该法规于2010年全面生效。在这里，我们使用GOSAT卫星的甲烷观测资料来评估亚洲人为和自然排放总量的近期趋势，重点是在中国。我们发现，从2010年到2015年，中国的排放量增加了1.1％±0.4％Tg CH4 yr −1 ，到2015年人为和自然排放总量达到61.5％±2.7 Tg CH4。观测到的趋势与2010年以前的趋势，主要归因于煤炭开采。这些结果表明，中国的CMM法规对中国甲烷排放量的持续增长没有明显的影响。
展开▼
