Recommendations to WMO • Consensus on the need for a fully integrated, globally coordinated

Copernicus), will be key; • A comprehensive “landscape analysis” of roles and responsibilities in greenhouse gas monitoring should be undertaken; • Invite GCOS to lead consideration of whether the Carbon Cycle observations set out in its latest IP are comprehensive in terms of observational requirements for such an overall GHG Watch; Recommendations to WMO (II) • Consensus that this initiative mus. [...] Service and stakeholder engagement: [GGW] should: • Accommodate multiple range of timescales and scope of services relevant to daily/monthly/annual/decadal phenomena; • Take due note of need to define services and information needs early in process; • Provide support to ETF process in UNFCCC in a collaborative, useful and inclusive manner; • Pay attention to user/policy interface (WMO IG3IS, GFOI/. [...] Comments on overall architecture • System architecture to be designed with the aim of improving our fundamental understanding of global biogeochemical cycles (CO2, CH4, N2O); • Scope to intercompare products between service centres, as well as comparison/coherence of input data/models; WMO to support systematic verification of products, and intercomparison of skills measures (cf NWP); • Need for m. [...] Way Forward • Clarify the requirements intended to be met by the [GGW], including the primary target applications (e.g., anthropogenic fluxes, natural sources/sinks); • Develop a time-line for the establishment of the overall infrastructure; • Develop roadmap for design of comprehensive, integrated global GHG observing system consisting of both surface- and space-based assets, incorporating and bu. [...] use of new infrastructure applications aided by working with development agencies in the region • Immediate actions: • WMO to call for round table discussion with relevant parties ; • Seek to expand observing networks in priority regions including the tropics, the Southern Ocean and the Arctic; • Establish collaboration between existing GHG modeling centers to provide access to common observationa.