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Non-Synoptic Winds Data Basis

A high-quality data basis is essential for reliable assessment of non-synoptic wind hazards and determination of any mitigation measures needed. Common data sources, however, often come with many shortcomings, which, if not taken into account, may lead to unsound estimation of risks from non-synoptic wind hazards. In this chapter, the range of potential data sources for assessing non-synoptic winds is discussed, including observational and model-based products. Observational products include station-based observational networks and remote sensing techniques, while model products range from global analyses to high-resolution large-eddy simulations. Both traditional and latest generation products are presented, including an explanation of how the respective data are produced and any limitations that end users should be aware of when working with such data. Sources of data deficiencies are additionally discussed, as well as factors to consider when assessing the suitability of a chosen data source as a basis for decision-making (e.g., its representativeness).