Temperature/Levels » Wet-Bulb Potential Temperature (Theta-w) Skew-T Procedure
At a given pressure level, do the following:
- Find the wet-bulb temperature
- Find the wet-bulb temperature
- From the wet-bulb temperature, follow the saturation adiabat to the 1000 hPa isobar.
- From the wet-bulb temperature, follow the saturation adiabat to the 1000 hPa isobar.
- The isotherm value at this intersection equals the wet-bulb potential temperature at the given pressure.
- The isotherm value at this intersection equals the wet-bulb potential temperature at the given pressure.
In this example, air at 700 hPa with T = -5°C and Td = -13°C has a wet-bulb temperature of -7°C and a wet-bulb potential temperature of 10°C.