ECMWF contribution to YOPP

The Year Of Polar Prediction (YOPP) is part of the Polar Prediction Project (PPP) of the World Meteorological Organisation. ECMWF has created and hosts a data archive of selected meteorological fields from ECMWF's Integrated Forecast System, from the beginning of YOPP's core phase (mid-2017) to present. The archive contains 6 hourly fields up to a leadtime of 15 days from the control of ECMWF's operational daily ensemble forecasts, performed at approximately 18 km resolution. It also includes additional data with tendencies from various physical and dynamical processes on model levels.