Building-resolved modelling with GRAMM | GRAL
The GRAMM/GRAL modelling system combines a mesoscale model with a high-resolution transport model to simulate CO2 or air pollutants in urban areas.
The GRAL model (Graz Lagrangian model) is a high-resolution Lagrangian transport model developed by the Graz University of Technology. It is combined with the mesoscale wind-field model GRAMM.
Application
We use GRAMM/GRAL to simulate the CO2 inventory for the city of Zurich. By running the GRAMM/GRAL model over the city, we identify sources and sinks of CO2 and how different emission sources evolve over time. A measurement team at Empa has set up a sensor network to monitor. The GRAM/GRAL model can then be used to trace measured concentrations back to their sources, which helps to verify the CO2 emission inventory of the city. This is an important contribution to the city's path towards net-zero emissions. ICOS-Cities project
