The global phenomenon of rising temperatures as a result of climate change requires, based on local conditions, individual solutions for the increasingly heated and dense urban space. The heat reduction programs presented describe fields of action and approaches that are targeted at specific points and that remain at the political and administrative boundaries.

With the help of cartographic and statistical surveys, digital and analog, we figure out the limits of the individual metropolitan areas with regard to their possible compression and cooling. After an initial deep drilling in Zurich (in HS20), we will continue with the investigations in the Basel metropolitan area in FS21.