1. SFSPA and OPA Document No. 4
SFSPA and OPA Document No. 4.2(2) Additional Observational Requirements from the ¨WMO Rolling Review of Requirements
Etienne Charpentier
Chief, WMO Observing Systems Division
JCOMM-5, October, Geneva

2. WMO Application Areas Global Numerical Weather Prediction
Definition: an activity involving primary use of observations, in a chain of activities which allow NMHSs or other organizations to render services contributing to public safety, socio-economic well-being and development in their respective countries, in a specific domain related to weather, climate and water. The concept of a WMO Application Area is used in the framework of the WMO Rolling Review of Requirements (RRR) and describes a homogeneous activity for which it is possible to compile a consistent set of observational user requirements agreed by community experts working operationally in this area.
Global Numerical Weather Prediction
High Resolution Numerical Weather Prediction
Nowcasting and Very Short Range Forecasting
Sub-seasonal to longer predictions
Aeronautical Meteorology
Forecasting Atmospheric Composition
Monitoring Atmospheric Composition
Providing Atmospheric Composition information to support services in urban and populated areas
Ocean Applications
Agricultural Meteorology
Hydrology
Climate Monitoring (GCOS)
Climate Applications (Other aspects, addressed by the Commission for Climatology)
Space Weather
Climate Science
Cross cutting:
Global Cryosphere Watch (GCW)
Global Framework for Climate Services (GFCS)

3. Long term vision of global observing systems
Rolling Review of Requirements (RRR) and Evolution of Global Observing Systems
Long term vision of global observing systems
Application
Areas
Critical
review
User
requirements
Statements of
Guidance
(gap analysis)
Impact
Studies
(e.g. NWP5)
Priorities,
cost
effectiveness
Observing
Systems
Capabilities
(Space & Surface)
(OSCAR)
Implementation Plan
(EGOS-IP)
Members’ and
Space Agencies
Observation
Programmes 3

4. Critical variables for ocean applications (annex to draft Decision 4
Sea surface height anomaly - high impact on ocean forecasting systems
Sea level – wide range of requirements for sea level data from early detection of tsunamis to long-term trends of sea level rise)
Wave parameters – extreme wave and wind gust events significantly constrain shipping and other marine operations (collocate wind and wave sensors required)
Surface pressure – SLP from drifting and moored buoys to detect and monitor atmospheric phenomena over the oceans (e.g. tropical cyclones) that significantly constrain shipping
Visibility –critical for operations and still very limited

5. ADDITIONAL OBSERVATION REQUIREMENTS FROM WMO ROLLING REVIEW OF REQUIREMENTS (RRR) (JCOMM-5-d04-2(2)-ROLLING-REVIEW-REQUIREMENTS-draft1_en)
This document includes 1 proposed decision:
draft Decision 4.2(2)/1 — Contribution to the Rolling Review of Requirements;
Annex includes critical marine meteorological and oceanographic variables where JCOMM has identified gap
Observations Programme Area requested to consider in its workplan, and in dialogue with funders and implementers of the observing networks, how these critical variables could be better observed
SFSPA is requested to assist the Point of Contact for Ocean Applications in reviewing and updating the Statement of Guidance for Ocean Applications
Members/Member States are urged to contribute to the implementation of meto-oceano observing systems for achieving the implementation targets of ocean observing networks & pay attention to the critical variables in the Annex