Urban Climate Under Change [UC]² PALM-4U Evaluierungsbericht Teil 1

Kurzfassung

The BMBF Program “Urban Climate Under Change” took on the challenge of providing large cities and urban regions with a scientifically sound, practical set of tools for dealing with the problems associated with current and future weather and climate conditions and air pollution. The building-resolving urban climate model PALM-4U was developed for this purpose. An evaluation concept has been developed in order to be able to make statements about the performance of the model. A central component of the evaluation is the validation of the model data using quality-controlled reference data. Such data was collected from existing long-term observations and by means of specially conducted intensive measurement campaigns. City-wide model runs representing real weather situations were validated, in particular for Berlin, Hamburg and Stuttgart. This Part 1 of the evaluation report presents the evaluation concept and provides a description of the model system, the model runs and the reference data.