World Meteorological Organization WMO OMM Working together in

World Meteorological Organization WMO OMM Working together in weather, climate and water Introduction: Need for OSCAR in WIGOS and the RRR Wenjian Zhang, D/OBS World Meteorological Organization (WMO) WMO 17 th World Meteorological Congress Side Event on www. wmo. int

WMO OMM WIGOS = WMO INTEGRATED GLOBAL OBSERVING SYSTEM The whole is more than the sum of the parts—Aristotle Need an Integrated Global Observing System to meet all requirements in a cost – effective manner 17 th World Meteorological Congress: Side Event on

WMO OMM Rolling Review of Requirements (RRR) process • RRR process, defined by the Manual on the Global Observing System (WMO-No. 544), is the WMO standard process for managing evolution of WMO observing systems. • . 3

Need for OSCAR supporting RRR and Vision of WIGOS 2040 1. User requirements are collated in a comprehensive, 2. 3. The 4. comparison output The consolidation of this of isuser reviewed requirements of the by So. Gs experts (withingap observing theanalysis for systematic and quantitative way in the WMO Observing system relevant allcapabilities areas application and for future and a given used needs application to and prepare potential aarea Statement new is calledofa Requirements database Critical Guidance technologies) Review. (SOG) will lead to a long-term vision for WIGOS Requirements Critical review Observing capabilities (space & surface) Long-term vision of WIGOS Statements of guidance of Statements guidance of Guidance Members’ programmes (including space agencies) Implementation Plan for Evolution Recommendation s

Thank you for your attention! Your feedback is welcome wzhang@wmo. int www. wmo. int 17 th World Meteorological Congress: Side Event on 5