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    A review of state-of-the-art machine learning methods for improving probabilistic weather forecasts

    KNMI scientists, Dr Maurice Schmeits and Dr Kirien Whan, have contributed to a review of the latest methods to improve weather forecasts using statistical and machine learning methods. The review was led by Dr Stéphane Vannitsem from the Belgium Royal Meteorological Institute (RMI) and had contributions from scientists working on statistical post-processing at 11 national weather services (NWSs) in Europe, as well as Karlsruhe Institute of Technology, and the European Center for Medium-Range Weather Forecasts.
  • A map of the Arctic

    Climate State Dependence of Arctic Precipitation Variability

    Arctic precipitation is projected to increase more rapidly than the global mean in warming climates. However, warming-induced changes in the variability of Arctic precipitation are largely unknown. Scientists from KNMI, in collaboration with the Institute for Marine and Atmospheric research Utrecht (Utrecht University), Energy and Sustainability Research Institute Groningen (University of Groningen), and the Water Systems and Global Change Group (Wageningen University & Research), have shown that the increase in precipitation variability towards warmer climates does not scale with the increase in mean precipitation. This is mainly attributed to the origin: while the increase in mean precipitation is largely attributed to the increase in surface evaporation, the increase in precipitation variability is attributed to variability in poleward moisture transport.
  • A figure showing changes in the moisture budget terms (precipitation, vaporization, atmospheric moisture transport across 70°N) in the Arctic region (70-90N) A. Average values, B. Year-to-year variations

    Strong increase in year-to-year variation in Arctic precipitation

    Recent research by climatologists from KNMI, UG, WUR and TU Delft shows that, on average, more precipitation will fall in the Arctic region due to global warming. Initially this will mainly take the form of snow; after continued warming, this will turn into rain. A new article from climatologist Prof. Richard Bintanja (KNMI and UG) and his colleagues from the Royal Netherlands Meteorological Institute (KNMI), Wageningen University and Research (WUR) and Delft University of Technology (TU Delft), which was published in Science Advances, shows that the year-to-year variation in precipitation will also strongly increase. This increase has a very different cause than the average increase in Arctic precipitation.

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About KNMI

The Royal Netherlands Meteorological Institute (KNMI)

Is the dutch national weather service. Primary tasks of KNMI are weather forecasting, and monitoring of weather, climate and seismic activity. KNMI is also the national research and information centre for meteorology, climate, air quality, and seismology