The following climate attributes can be defined:

air pressure (press) [mbar]
incoming global radiation including direct and diffuse shortwave radiation (grad) [W:m-2]
incoming longwave radiation (lrad) [W:m-2]
precipitation including rain and snow (prec) [mm]
average temperature (tavg) [oC]
maximum temperature (tmax) [oC]
minimum temperature (tmin) [oC]
relative humidity (rh) [%]
vaour pressure deficit (vpd) [kPa]
wind speed (wind) [ms-1]

climate_synthesizer Climate synthesizer