Cooling effects of water bodies – new paper

We are delighted to announce a new open-access article on the impact of urban water bodies on local thermal comfort. The paper was lead by Cor Jacobs, Micrometerologist at the university of Wageningen, and is published in Urban Climate Vol. 32:  This paper also provides, for the first time, a comprehensive description of the ENVI-met water body model including its modifications based on the research input during the work on this paper. Cor desribed the work on LinkedIn as follows:

We quantify daytime cooling and night-time warming effects of typically Dutch urban water bodies. Such effects are small and insignificant in the context of human thermal perception and heat mitigation. Whereas this is bad news if we want daytime cooling, it is good news during nights in which warming needs to be avoided. Also, water bodies usually offer space for design interventions aiming at cooling by shading from trees, by fountains or water mists, and allowing natural ventilation in warm periods.

Images of the simulation of the water bodies © Lenné3D.


To active the new water features in ENVI-met, open the “Profiles” tab in the Database Manager. Then navigate to a soil profile that contains at least a fraction of water, for example the “Deep Water” included in the default dataset. (Don’t forget to create a User-Copy first before editing the data). The water Mixing coefficient and the water Turbidity are hidden under ”Additional Value 1” (Mixing) and ”Additional Value 2” (Turbidity). Edit then the values to adjust the water properties for your simulation.