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COST733 (already finished)



EU-COST Action 733 Harmonisation and Applications of Weather Type Classifications for European Regions

The main objective of the Action is to achieve a general numerical method for assessing, comparing and classifying typical weather situations in European regions. The method will have the following features:

  • Scalable to any European (sub)region with time scales between 12 h and 3 days and spatial scales of ca. 200 to 2000 km,
  • applicable for:
    • frequency analysis of extreme weather events
    • local climate assessment (e.g. fog/snow cover/sunshine duration)
    • human biometeorology and impacts on ecosystems
    • climate monitoring
    • assessment of impaired air quality episodes
    • medium range weather forecast and climate characteristics of the forecast period (e.g. by mapping of climate parameters related to historic weather types and application to the forecast meteorological situations)
    • verification of numerical weather forecast models (by checking the forecast weather type
Secondary objectives are:
  • to enhance our knowledge on linkages between the atmospheric circulation, weather, climate and environmental variables
  • to have an up-to-date overview of existing weather types classification methods
  • to identify suitable criteria/indicators to weather types
  • to identify a set of useful applications of weather types classifications
  • to analyse the strengths and weaknesses of the methods for different applications
  • to establish a (new) scientific cooperation forum in synoptic climatology in Europe
  • to provide tools for comparison and evaluation of different weather types classifications
  • to assess different methodologies for the comparison of weather types classifications.

Scientists