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Met Éireann upgrading their Harmonie model

  • 21-11-2017 12:42am
    Registered Users Posts: 8,192 ✭✭✭ Gaoth Laidir

    Met Éireann are upgrading their Harmonie Arome hi-resolution model from the curent cycle 37 to cycle 40 by the end of this year. This should bring about improvements in accuracy and an expansion of the model domain.

    The big improvement is moving from the current conventional surface observations only to 3D-Var, which includes upper air observations as well. The model will also be run every 3 hours as opposed to the current 6.

    Although the only freely-available model output is on their Short Range forecast page the new version should help improve the accuracy of their operational forecasts, especially when it comes to high-impact events, such as the flooding that occured in the Inishowen peninsula earlier this year.

    Alan Hally of Met Éireann gave a nice talk at the ECMWF workshop in Reading last week. In it he spoke of that Donegal flood event and also went into detail on the forecasting of storm Ophelia. He also spoke of the model upgrade. It's about 20 minutes long and can be watched back here (using Adobe Connect).