RH[%] = we defined relative humidity (RH) as actual water vapor content x100 water vapor content of saturated air To be more specific, we rewrite this as RH[%] = P, x100 (T)' (2) (1) where Py [hPa] is partial pressure of water vapor present in moist air and es [hPa] is saturation vapor pressure and given by es (T) = 6.11 x exp (5400 (273)) [hPa]. (3) Here the notation is exp[x] = ex and hPa (hectopascal = 100 pascal) is a unit of pressure (1 atmospheric pressure is about 1013 hPa). Saturation vapor pressure is the partial pressure of water vapor for saturated air and it is a function of environmental temperature T [K]. For T = 303.15 [K], P = 35.0 [hPa], calculate relative humidity RH.