= 3.2.1 At a climate station, the following measurements are made: air pressure = 101.1 kPa, air temperature 25°C, and dew point temperature = 20°C. Calculate the corresponding vapor pressure, relative humidity, specific humidity, and air density. 3.2.2 Calculate the vapor pressure, air pressure, specific humidity, and air density at elevation 1500 m if the surface conditions are as specified in Prob. 3.2.1 and the lapse rate is 9°C/km. 120 and the relative humidity 35 percent. calculate the