Ge Cheng’s PhD defense

9 October 2023

Photo: Cheng

Congratulations to Ge Cheng for her PhD with the topic "Parameterization of canopy processes for atmospheric models". Ge has developed a parametrisation for heteogeneous urban canopies in coarse numerical models. The new parametrisaion GeCap is based on nudging, a techniques that is easy to calculate and already implemented in many numerical models. Fur urban canopies GeCap includes the impact of buildings on wind, turbulence and temperature calculated from the enclosed building volume and the indoor temperature of buildings. Model runs using the meso-scale model METRAS for Hamburg show, that the urban imact on wind and temperature can be reproduced. Due to the low computational cost and the basic building parameters the method may be used to consider urban impacts in global scale models.