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The World Weather Watch System Support Activity (WWWSSA)

World Meteorological Organization Flood Forecasting Initiative

Development Partnerships

Working Group on Numerical Experimentation

Working Group on Data Assimilation and Observing Systems

Working Group on Predictability, Dynamics and Ensemble Forecasting

Working Group on Nowcasting and Mesoscale Research

Working Group on Forecast Verification Research

Ocean Observaton Panel for Climate

Terrestrial Observation Panel for Climate

Task Team on the GCOS Surface Reference Networks

Task Team on Lightning Observations for Climate Applications

Task Team Radar Observations for Climate Applications

CBS Lead Centre RAI

CBS Lead Centre RAII

CBS Lead Centre RAIII

CBS Lead Centre RAIV

CBS Lead Centre RAV

GRUAN Task Team on Radiosondes

GRUAN Task Team on GNSS Precipitable Water