This is the second of three versions of this deliverable. In this version, the section on net land CO2 fluxes has been rewritten, the section on CH4 has had extensive updates and expansion, and the section on fossil CO2 emissions has been revised with the latest data available.
The aim of the deliverable is to identify, quantify and explain divergences between global inventories, atmospheric inversions, process models and national inventories submitted to the UNFCCC. We present consistent comparisons of CO2 and CH4 emission estimates based on inventories and observations for various countries to highlight interesting aspects. We cover fossil CO2 emissions, net land CO2 fluxes, and anthropogenic CH4 emissions. Most of the data products are from the VERIFY project, with a gradual inclusion of CoCO2 products as the project evolves. The first edition of this deliverable was December 2021, this is the second version (December 2022), with a third and final version due in December 2022. Each version of the deliverable is planned to be an evolution of the previous, with better discussions of the comparisons between the datasets.
Abstract