The core dataset for the study ''<b>Tracing China’s methane emissions: 10,000 coal mines for ten years</b>''

Methane is the second most abundant anthropogenic greenhouse gas. China is the largest methane emitting country in the world, greater than the combination of Europe and America. While coal mining represents half of China’s methane emissions, the amount and the trend of emissions remain controversial since 2010. With China stopping updating emission data after 2014, this compromises the accuracy of the trajectory of global methane emissions. Here, we provide a comprehensive inventory of coal mine methane (CMM) emissions from 2011 to 2020, by independently quantifying the weighted emission factors of more than 10000 mines.We would like to clarify that all data sources for this study are publicly available. The core dataset used in this study comes from the <b><i>Compilation of National Coal Mine Gas Level Identification for 2011</i></b>, which is a publicly available book published by the Chinese National Coal Mine Safety Inspection Bureau. This compilation includes detailed data on gas levels in over 10000 coal mines across China, which serves as the basis for our analysis of methane emission factors. Additionally, the provincial coal production data was sourced from the <b><i>China Energy Statistical Yearbook</i></b>, a widely accessible government publication that compiles annual statistics on coal production at the provincial level.We have uploaded the complete dataset to Figshare, which can be accessed via the DOI link. This ensures that all interested researchers can access the full data used in our study for replication and further analysis. We believe that these measures have improved the transparency and repeatability of our work.

甲烷是全球第二大人为温室气体。中国是全球最大的甲烷排放国，其排放量超过欧美两国排放总量之和。尽管煤矿开采占中国甲烷排放量的一半，但自2010年以来，相关排放规模与变化趋势始终存在争议。由于中国在2014年后停止更新排放数据，这削弱了全球甲烷排放轨迹估算的准确性。为此，本研究通过对逾1万家煤矿的加权排放因子进行独立量化，构建了2011至2020年的煤矿甲烷（coal mine methane, CMM）综合排放清单。需明确的是，本研究的所有数据来源均为公开可获取渠道。本研究使用的核心数据集源自《2011年全国煤矿瓦斯等级鉴定汇编》，该书由中国国家煤矿安全监察局公开出版，收录了全国超1万家煤矿的瓦斯等级详细数据，为本研究的甲烷排放因子分析提供了核心依据。此外，省级煤炭产量数据源自《中国能源统计年鉴》——这是一份广为流通的官方出版物，汇编了各省年度煤炭产量统计数据。本研究的完整数据集已上传至Figshare平台，可通过DOI链接获取，确保所有感兴趣的研究人员均可获取本研究使用的全部数据，用于结果复现与后续分析。我们认为，上述举措提升了本研究的透明度与可重复性。

搜集汇总

背景与挑战

背景概述

该数据集是研究“追踪中国甲烷排放：10,000个煤矿十年数据”的核心数据，包含2011年至2020年中国煤矿甲烷排放分析所需的基础信息。数据集基于公开的《2011年全国煤矿瓦斯等级鉴定汇编》和《中国能源统计年鉴》，提供了超过10,000个煤矿的瓦斯等级数据及省级煤炭产量统计，用于构建加权甲烷排放因子和排放清单，以解决中国甲烷排放数据缺失问题并提高全球排放轨迹的准确性。