Quantification of uncertainty ranges from European multi-model inversions and ways to benchmark inve rsion systems

This document reports on the work performed in Task 5.6 within the work package WP5 ‘Connecting scales and uncertainties’ of the CoCO2: Prototype system for a Copernicus CO2 service project. The aim of Task 5.6 ‘Assessment of uncertainties in European inversion of CO2 and CH4’ is essentially to perform multi-model intercomparisons to quantify the uncertainty range in European CO2 and CH4 land-atmosphere fluxes from atmospheric inversions. The work in this task also includes preparing a roadmap on benchmark atmospheric transport model inversions.