FEISSO Demonstration Dataset for Urban CO₂ Flux Inversion in Weifang, Chengdu, and Xining, China

This dataset provides demonstration cases for the FEISSO urban-scale CO₂ flux inversion system applied to three representative Chinese cities: Weifang, Chengdu, and Xining. The dataset includes prior and posterior CO₂ flux fields generated from 10-day inversion experiments, together with corresponding OCO-2 XCO₂ observations and simulated XCO₂ concentrations used in the assimilation process. The data are intended to support the reproducibility and evaluation of the FEISSO inversion framework presented in the associated study. NetCDF files contain spatially distributed prior and posterior CO₂ fluxes, while text files provide observation and simulation records for each inversion case. Flux units are expressed in kg m⁻² s⁻¹.