Fossil Fuel CO₂ Emissions for the OCO2 Model Intercomparison Project (MIP)

These are fossil CO2 fluxes updated through February 2024 for atmospheric CO2 modeling. They were constructed primarily to be used for the OCO2 Model Intercomparison Project (MIP). For 2000-2021, they're based on ODIAC 2022, which in turn uses BP's energy use statistics for 2020 and 2021. ODIAC monthly emissions have been disaggregated to hourly using the TIMES emission factors for day of week and time of day (https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2012JD018196). For 2022-2024, ODIAC's 2021 emissions have been scaled by the ratio of that year to 2021 emissions reported by Carbon Monitor, downloaded on April 4, 2024 from https://carbonmonitor.org/. ODIAC does not have sectoral decomposition to the degree provided by Carbon Monitor, so total ODIAC emissions for each region have been scaled by the total emission change between 2021 and each extended year reported by Carbon Monitor, i.e., power, ground transport, etc. have not been separately scaled. Carbon Monitor data are daily, but ODIAC emissions are monthly. So Carbon Monitor data have been aggregated to monthly totals before deriving scaling factors between 2021 and the extended years. Carbon Monitor reports international aviation emissions by country of origin, while ODIAC reports aviation emissions on a grid. Since there is no way to derive the points of emission for Carbon Monitor aviation emissions , all Carbon Monitor international aviation was aggregated to create a single number for each month, then that number was used to scale ODIAC's bunker fuel for each month in 2022-2024. Hourly global totals are given in the files as a check, in case you want to verify your units and file reading.本数据集为更新至2024年2月的化石燃料二氧化碳（CO₂）通量数据，适用于大气CO₂模拟研究。本数据集主要为OCO2模式比对计划（Model Intercomparison Project, 简称MIP）构建所用。2000年至2021年的通量数据基于ODIAC（人为二氧化碳排放开放数据清单，Open Data Inventory of Anthropogenic CO2 Emissions）2022版构建，该数据集同时采用了英国石油公司（BP）2020年与2021年的能源使用统计数据。ODIAC的月度排放数据已通过TIMES星期与时段排放因子拆解为逐小时数据，相关方法可参见文献：https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2012JD018196。针对2022年至2024年的数据，以碳监测（Carbon Monitor）发布的各年份与2021年的排放比值，对ODIAC 2021年的排放数据进行比例缩放，以此得到对应年份的通量数据。该碳监测数据于2024年4月4日从https://carbonmonitor.org/下载获取。由于ODIAC未提供碳监测那般细致的行业分解数据，因此各区域的ODIAC总排放量仅依据碳监测公布的2021年至各扩展年份的总排放变化量进行比例缩放，并未对电力、地面交通等细分行业排放单独调整。碳监测提供的排放数据为逐日尺度，而ODIAC数据为月度尺度，因此在推导2021年与各扩展年份的缩放因子前，已将碳监测的逐日数据聚合为月度总量。碳监测按排放国公布国际航空排放量，而ODIAC则以网格形式呈现航空排放数据。由于无法获取碳监测航空排放的具体排放点位，因此将所有碳监测公布的国际航空排放量按月聚合为单一总量，再用该总量对2022年至2024年各月的ODIAC航空燃油排放数据进行比例缩放。数据文件中同时提供全球逐小时排放总量作为校验项，便于使用者验证单位一致性与文件读取正确性。

搜集汇总

背景与挑战

背景概述

该数据集为OCO2模型比较项目提供化石燃料CO₂排放数据，更新至2024年2月，适用于大气CO₂建模。数据基于ODIAC 2022（2000-2021年）和Carbon Monitor（2022-2024年），通过时间分解（小时级）和区域缩放方法处理，确保了排放数据的连续性和一致性，特别关注了国际航空排放的调整。