Abstract. Kilometric-resolution Ensemble Prediction Systems (EPSs)
will be the new state-of-the-art forecasting tools for short-range
prediction in the following decade. Their value will be even greater in
Antarctica due to the increasingly demanding weather forecasts for logistic
services. During the 2018–2019 austral summer (1 December–31 March),
coinciding with the Southern Hemisphere Special Observation Period of the
Year of Polar Prediction (YOPP), the 2.5 km AEMET-γSREPS was
operationally integrated over the Antarctic Peninsula. In particular, the
Antarctic version of γSREPS comes up with crossing four
non-hydrostatic convection-permitting NWP models at 2.5 km with three global NWP driving models as boundary conditions. The γSREPS forecasting system has been validated in comparison with ECMWF EPS. It is concluded that γSREPS has an added value to ECMWF EPS due to both its higher resolution and its multi-boundary conditions and multi-NWP model approach. γSREPS performance has a positive impact on logistic activities at research stations and its design may contribute to polar prediction research.
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