WP6 will lay the foundations for the prototype of an observation-based GHG monitoring and verification system with the database and data-management system at the project level and policy-relevant information developed from the synthesis of WP5, consisting in a web-based visualization of the evolving trends of GHG fluxes, and a geographic mapping of the emission uncertainty reduction potential from new observations. WP6 will focus not only on the reconciliation between UNFCCC inventories and observation-based estimates from WP5 for each EU country but also for EU as a whole, providing Product 4 in collaboration with WP1. The total observation-based GHG budget of the EU will be derived for 2005-2015 and then yearly updated/extended to the previous year. This will be taken up in the dynamic visualization tools that will embed historical time-series of UNFCCC inventories since 1990. The trends (and uncertainties) will be put in perspective with the NDC targets of 2030 (40% less GHG emissions than in 1990 for EU as a whole), so that policy makers can derive the climate action progress of GHG mitigation at MS and EU level.
The transition between the VERIFY pre-operational but research-based activities and the future operational Monitoring and Verification system being planned in the Copernicus programme, will be documented in the System Design Document (SDD) being Product 5. ECMWF, as the entrusted entity for the Copernicus Atmosphere Monitoirng Service and Copernicus Climate Change Service, will ensure a direct link with the Copernicus programme and facilitate uptake of the results from VERIFY in the Copernicus operational environment. The actionable policymaker support tool in this task will contribute in particular to the roadmap being elaborated by the Copernicus programme for a future operational monitoring system of GHG emissions, described by Ciais et al. (2015).

The VERIFY methodologies from WPs 2 to 5 will also be applied in collaboration with foreign partners for the US, China, and Indonesia to provide Product 6. Existing collaborations with US and Chinese experts in the scientific community and national inventory agencies will provide the additional regional data needed16. Workshops with official agencies and academic institutions are planned to bridge the gap between two communities: the one on emission inventory reporting and the other on observation-based monitoring of GHG sources and sinks. WP will build on the long-standing experience of several partners (the Inventory National Agencies, JRC) in supporting policy makers (e.g. DG Climate Action), and organise regular feedback between the “user requirements of policy makers” and the continued development of the observation-based GHG monitoring and verification system.