This project is an international community effort, partly supported by ileaps (Integrated land ecosystem atmosphere processes studies.

Urbanization is omnipresent which means that urban environmental forecasts are of great interest, especially for urban heat islands and air quality. Models representing urban areas within numerical weather prediction needs to be developed and evaluated. Urban canopy models have so far mainly be evaluated in offline mode, ignoring the possible interactions with the atmospheric boundary layer. SUBLIME fills this gap by performing a single-column multi-model evaluation for a summer case at King’s College observatory in London (UK). Model simulations are performed in three stages (1: default model settings for urban canopy parameters; 2: Local Climate Zone 2 settings and 3: best-available settings) and evaluated using a wealth of observation data made available by the King’s College observatory.