我国重点区域（长三角区域）2018-2022年甲烷排放月度数据库

基于2018–2022年TROPOMI卫星观测数据，通过大气反演方法，利用GEOS-Chem模型在中国区域的高分辨率化学传输模拟，结合贝叶斯优化和空间降尺度算法，估算了中国甲烷排放通量。栅格的空间分辨率为0.1°´0.1°，数据包括2018-2022年逐月平均排放通量，数据单位：kg/m2/s。

Based on TROPOMI satellite observations from 2018 to 2022, this dataset estimates methane emission fluxes in China by applying atmospheric inversion methods, combined with high-resolution chemical transport simulations of the GEOS-Chem model over the Chinese region, as well as Bayesian optimization and spatial downscaling algorithms. The spatial resolution of the raster grid is 0.1° × 0.1°. The dataset contains monthly mean emission fluxes for the period 2018–2022, with the unit of kg/m²/s.