Atmospheric Methane Growth Rate in 2020 and 2021

1. INVs.tar.gz – The global gridded surface methane fluxes (2019–2021) inferred from an ensemble of six atmospheric inversions by PYVAR-LMDZ-SACS, each using a combination of three different methane concentration observation datasets for constraints (SURF, GSNIES and GSUoL) and two physical parameterisations for the transport model LMDZ (LMDZ AR3 version and LMDZ AR6 version).2. LMDZ-INCA_OH.tar.gz – The prescribed OH and O(¹D) fields (2019–2021) used in atmospheric inversions, which were simulated by a chemistry-climate model LMDZ-INCA with a full tropospheric photochemistry scheme.3. ANTHROP_EMIS_2019-2021.nc – The global gridded anthropogenic methane emissions (2019–2021) compiled from a combination of existing inventories.4. WEMs.tar.gz – The global wetland methane emissions (2015–2021) simulated by two process-based wetland emission models (WEMs) ORCHIDEE-MICT and LPJ-wsl, forced by four climate forcing datasets (CRU, ERA5, MERRA2 and MSWEP). For ORCHIDEE-MICT in particular, two wetland maps (RFW and GIEMS-2) were used to calibrate the parameters in simulating the wetland area dynamics. Combining two wetland maps for ORCHIDEE-MICT and one for LPJ with four climate datasets, a total of 12 simulations of wetland methane emissions were included in our analyses.For more information, please refer to Lin et al. Recent methane surges reveal heightened emissions from tropical inundated areas.