Meteorological Bulletin M3.1

• Formats of Messages
• Representation and Code Forms
• Deterministic Atmospheric Model Products
• Ensemble Prediction System
• Prediction of Ocean Waves
• Wave Ensemble Forecast
• Boundary Condition Optional Project
• Seasonal Forecasting System 4
• EPS Monthly Forecasting System
• Transmission of products
• Maintenance of Requirements
• Repeat Transmission
• Appendix I - Bitmap specifications

This document is intended to be a user manual for users of the ECMWF dissemination service. It outlines the real-time meteorological and oceanographic products available from the ECMWF forecasting system. FM 92 GRIB is the principle representation form for dissemination, although dissemination based on FM 47 GRID is still supported. In this manual, matters relating to GRIB code dissemination are covered first in each section, followed by those for FM 47 GRID.