Dear faezeh,

what kind of meteorological data do you have? What parameters? In what temporal resolution?

If you want to calculate thermal indices without SVF, you are going to need (besides the stations approximate geographical location) the parameters air temperature, relative humidity or vapour pressure, wind speed and global radiation in at least 3 hourly (or better) temporal resolution.

Best,
Dominik

Dear faezeh,

please see the manunal on how to read input data: http://www.urbanclimate.net/rayman/RayManManual.pdf.

thermal indices should always be calculated with the highest temporal resolution available (up to 10 mins).

Hmm, you are going to need some kind of radiation input. RayMan can approximate short and longwave irradiation if you have a fisheye image However, you will need either some information about the surroundings or the global radiation (containing the effect of that information).

If you are calculating for some rooftop level without any obstructions you could enter a virtual cloud cover column, that is always 0 and run with a SVF of 1. But please keep in mind that this will result in a rather coarse approximation!

Best,
Dominik

Dear faezeh,

yes, in general, you can. RayMan will approximated global radiation based on astronomic equations, your location setting (including lat / lon and altitude), the date and time, as well as cloud cover in this case.
However, (as RayMan does not know nothing about the surrounding) the results will be representative for some undisturbed location without any horizon limitation.

Best,
Dominik

Dear Nassima,

activity is not considered for PET in RayMan. However, you could calculate mPET instead that fully supports the activity setting.

Another option would be using SkyHelios (Pro), that does allow for the setting of activity in PET.

Best,
Dominik