April 20-22, 2026 / WMO / Global Atmosphere Watch Programme
The Integrated Global Greenhouse Gas Information System (IG3IS) brought together scientists, policymakers, and business representatives at its Stakeholder Consultation and User Summit in late April 2026. The three-day event underscored a growing consensus: atmospheric greenhouse gas monitoring has matured to the point where it can meaningfully support climate policy but getting data into the hands of decision-makers remains a central challenge.