In 2024, ECMWF will release the following as Open Data under the CC-BY-4 licence. This means these parameters will be free of Information Cost but may be subject to delivery charges if obtained via dissemination services such as ECPDS. 

• The existing ECMWF Open Data will be increased to 0.25 degrees resolution (from 0.4 degrees).
• Additional parameters will be added to support the operation of Limited Area Modelling (LAM), including additional pressure levels. 
• The entire ECMWF Real-time Catalogue at a resolution of 0.4 and coarser (0.4, 0.5, 0.75, 1.0, etc.) will be open and have no Information Cost. 
• ECMWF will make available an extended range dataset to match the S2S dataset free of charge on the public FTP.  

What does this mean for me? 

ECMWF will announce the final date of implementation soon. From that point forward, new and renewing contracts can take advantage of these new open datasets.  Users wishing to take advantage of this reduction sooner must provide 3 months' notice to terminate their licence agreement and re-sign a new contract. No contracts will be pro rata amended.