Performs a variable conversion from temperature and pressure to potential temperature.
Transform: PotentialTFromT
obs filters:
- filter: Variable Transforms
Transform: PotentialTFromTObservation parameters needed (JEDI name)
- airTemperature (T)
- pressure (P)
The potential temperature (\theta) is calculated as follows:
\theta = (P_{F}/P)^\kappa \times T
where
\kappa = R_d / C_p
and P_{F} is the reference surface pressure.
Note: the error on \theta is set to the error on T scaled by the conversion factor (P_{F}/P)^\kappa.
Filter optional parameters
This filter allows the user to set specified names for input and output variables (defaults are IODA naming conventions):
- pressure variable (default: pressure)
- temperature variable (default: airTemperature)
- potential temperature variable (default: potentialTemperature)