The University of Leicester GOSAT-2 Proxy XCH4, v1.0 data set contains column-averaged dry-air mole fraction of methane (XCH4) generated from the Greenhouse Gas Observing Satellite (GOSAT-2) Level 1B data using the University of Leicester Full-Physics retrieval scheme (UoL-FP) using the Proxy retrieval approach.

This data is an Earth Observation Climate Information Service (EOCIS) funded version of the NCEO GOSAT-2 Proxy XCH4 v1.0 dataset. This dataset is consistent with the GOSAT-1 dataset (https://catalogue.ceda.ac.uk/uuid/54df57f3aaed4867bec35ebdb31f4a8b/). The latest version of the GOSAT-2 Level 1B files were processed with the Leicester Retrieval Preparation Toolset to extract the measured radiances along with all required sounding-specific ancillary information such as the measurement time, location and geometry. The data were processed through the UoL-FP retrieval algorithm where the Proxy retrieval approach is used to obtain the column-averaged dry-air mole fraction of methane (XCH4). Post-filtering and bias correction against the Total Carbon Column Observing Network is then performed, via the same methodology as used for the GOSAT-1 data. See process information and documentation for further details.