Tmrt-calculation: Roof Top shows extreme heat

[liviyu7]

Some high-rise buildings' roofs reach 160+ degrees Celsius on summer afternoons when the air temperature is about 30 degrees. Is the value range reasonable, or is there any problem with the parameter setting? And the mean radiant temperature (Tmrt) is calculated at a reference height above ground, default set to 1.1 m, representing pedestrian level, right? But what is the Tmrt value stand for in building area? Assuming the human being on the roof? Thank you for your assistance.

[biglimp]

First, SOLWEIG is not designed to estimate Tmrtr of roofs. Second. We recommend to tse the version in UMEP for Processing which is a more recent version

[liviyu7]

Thank you so much! I used the new version, and no extreme temperatures appeared. I understand that this model is not designed to calculate the roof Tmrt, but the level at which the pedestrian is located (based on DSM?). But can I consider the result of the building area to be equivalent to the TMRT calculated, assuming that the pedestrian is on top of the building? Or does the model use the exception method in the building area?

[biglimp]

I can be used but some parts of the model such as the ground view factor is not considered on roofs.

[liviyu7]

Sorry I did not understand. I just wanna know how to regard the building area as no data, since it is indoor and not fit in this model. So where could I set parameters for this? or I should independently clip building areas after calculating Tmrt?

[biglimp]

That is probably the bet soultion, to clip the building afterwards.