How to Determine the Building Floor Heights in WRF-BEM Simulation:

[fenlin]

Hello! As a newcomer to WRF-BEM, I understand that the parameter `num_urban_nz` is defined as 18, which divides the building into 18 vertical layers. Does this 18-layer division correspond to the number of floors in real-life buildings? In URBPARM, it mentions air conditioning settings—are these distributed on each floor of the building? Is there an option in the model to set the height of each building floor?
I hope to receive your reply, thank you.

 

[Ming Chen]

num_urban_nz is the vertical levels of urban canopy. It doesn't mean the the number of floors in buildings.

I am not sure of the air conditioning option in urban module. I will talk to our expert and get back to you.

 

[cenlinhe]

The BEM model has "floor" but it is not equivalent to the vertical layer. The setup for floor properties are embedded in the bem model code. You could search for the key word "floor" in module_sf_bem.F file. The air conditioning is distributed on each floor of the building. If you want to change the setup for building floor, you will need to go to the above file to change the relevant model parameters or variables.

 

[Ming Chen]

Hope the above post answers your question. Please let us know if you have more questions.

 

[fenlin]

The BEM model has "floor" but it is not equivalent to the vertical layer. The setup for floor properties are embedded in the bem model code. You could search for the key word "floor" in module_sf_bem.F file. The air conditioning is distributed on each floor of the building. If you want to change the setup for building floor, you will need to go to the above file to change the relevant model parameters or variables.

Hope the above post answers your question. Please let us know if you have more questions.

Thank you for your reply.
This is a screenshot I took when I opened WRF/phys/module_sf_bem_F. I found the explanation of the building plan and 3D diagram as well as the description of the number of building floors nlev.
I would like to ask whether the 3D building diagram has a default floor height of 4 meters?
In addition, there is no parameter setting for nlev and building floor height in URBPARM.TBL. How can I set the building floor height for different UCMs?