Fig. 1: A comparison of total N2O emissions from the IsoTONE and CAMS models for the year 2020.

Modelled total terrestrial N2O fluxes from the IsoTONE model (a) and from CAMS (b) (R. Thompson, 2021; regridded to 0.5◦using linear interpolation) for the year 2019. Both panels use the same logarithmic colour scale. The difference between the IsoTONE and inversion estimates is shown in c; areas where the difference is significant compared to the uncertainty are highlighted with black outlines. Maps generated with Cartopy (Met Office, 2015,132).