Replication data for: Trends and seasonality of 2019–2023 global methane emissions inferred from a localized ensemble transform Kalman filter (CHEEREIO v1.3.1) applied to TROPOMI satellite observations
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This dataset contains the following: Posterior best estimate methane emissions at monthly 2°x2.5° resolution for 2019-2023, produced in this work (posterior_best_ estimate_ch4_emis.nc). "Total" refers to the total emissions excluding soil absorption (i.e. this is not a flux). Source disaggregation is equivalent to the paper and includes the subgrid correction. Cite this paper (Pendergrass et al., 2025) if using. Global 3-D monthly mean OH fields from GEOS-Chem, scaled so that methane's lifetime due to loss to tropospheric OH matches the best estimate of 11.2 years derived from methyl chloroform observations (OH_3Dglobal.geos5.47L.4x5.SCALED.nc). Cite East et al., 2024 from paper if using. Stratospheric methane loss frequencies (GCC14_72LM.ch4loss.4x5.1985.nc4). Cite Mooring et al., 2024 from paper if using. GEOS-Chem restart with properly initialized stratosphere (GEOSChem.Restart.20180101_0000z.nc4). Cite Mooring et al., 2024 from paper if using. Representative HEMCO configuration file for inversion ensemble member emissions (HEMCO_Config.rc). Cite this paper (Pendergrass et al., 2025) if using. CHEERIO configuration files for the four inversion ensemble members (ens _config_* ison. Here file naming specifies which wetland inventory is used (WetCHARTs or LP.J) and whether emissions and concentrations (Emis+Cong) or emissions alone (Emis) are included in the state vector. Cite this paper (Pendergrass et al.. 2025) if using.
本数据集包含以下内容: 1. 本研究生成的2019-2023年月度2°×2.5°分辨率甲烷排放后验最优估计(posterior best estimate)文件(posterior_best_estimate_ch4_emis.nc)。此处的“总排放量”指扣除土壤吸收后的总排放(该数据并非通量项)。源项分解方案与论文一致,且包含次网格校正。若使用该数据集,请引用本论文(Pendergrass等人,2025)。 2. 来自GEOS-Chem的全球三维月度平均羟基(OH)场文件(OH_3Dglobal.geos5.47L.4x5.SCALED.nc),经缩放处理后,使甲烷因对流层羟基(OH)损耗的寿命匹配基于甲基氯仿观测得到的11.2年最优估计值。若使用该数据集,请引用论文中East等人,2024的成果。 3. 平流层甲烷损耗频率数据文件(GCC14_72LM.ch4loss.4x5.1985.nc4)。若使用该数据集,请引用论文中Mooring等人,2024的成果。 4. 已正确初始化平流层的GEOS-Chem重启文件(GEOSChem.Restart.20180101_0000z.nc4)。若使用该数据集,请引用论文中Mooring等人,2024的成果。 5. 用于反演集合成员排放的代表性HEMCO配置文件(HEMCO_Config.rc)。若使用该数据集,请引用本论文(Pendergrass等人,2025)。 6. 针对4个反演集合成员的CHEERIO配置文件(命名格式为ens_config_*.ison),其文件名可指明所使用的湿地清单(WetCHARTs或LP.J),以及状态向量中是否纳入排放量与浓度(Emis+Cong)或仅纳入排放量(Emis)。若使用该数据集,请引用本论文(Pendergrass等人,2025)。



