Met Office Global Ensemble Prediction System (MOGREPS-G) on a 30-day rolling archive

Description

THIS DATASET IS CHANGING

Files uploaded from late January 2026 onward will contain changes including:

• precision changes
• new parameters
• changes to existing parameters e.g. adding vertical levels and timesteps
• the height_asl_on_pressure_levels parameter will be replaced by geopotential_height_on_pressure_levels
  
  

Please check your systems are prepared for these changes.

A numerical weather prediction model that produces forecasts for the whole globe up to a week ahead. The projection used is the Equirectangular Latitude-Longitude and the grid resolution is 20km. The data is available as NetCDF files. It's offered on a free, unsupported basis, so we don’t recommend using it for any critical business purposes.

Met Office Global Ensemble Prediction System (MOGREPS-G) is a global configuration of the Unified Model, which is the Met Office's flagship Numerical Weather Prediction model.

The archive contains 30 days of data. The data is typically available approximately 10-11 hours after the model run time.

The following timesteps are available:

• Every hour from 0 to 54 hours or from 0 to 132 hours (depending on the parameter)
• Every 3 hours between 57 to 198 hours or from 135 to 198 hours (depending on the parameter) for data prior to late January 2026. Data produced after this run out to 246 hours.

Update Frequency

The MOGREPS-G model runs four times per day at 00:00, 06:00, 12:00 and 18:00 UTC.

License

British Crown copyright 2024-2025, the Met Office, is licensed under CC BY-SA

Documentation

https://www.metoffice.gov.uk/services/data/external-data-channels

Managed By

Met Office

See all datasets managed by Met Office.

Contact

servicedesk@metoffice.gov.uk. Service desk is only available Mon – Fri, 09:00 until 17:00 UTC (-1 hour during BST). As a non-operational service we aim to respond to any service support enquiries within 3-5 business days.

How to Cite

Met Office Global Ensemble Prediction System (MOGREPS-G) on a 30-day rolling archive was accessed on DATE from https://registry.opendata.aws/met-office-global-ensemble.

Usage Examples

Tutorials

• Numerical weather prediction models by Met Office
  
• The Met Office Unified Model by Met Office
  
• What is an ensemble forecast? by Met Office
  

Tools & Applications

• Iris by Iris Contributors