act.utils.planck_converter¶
- act.utils.planck_converter(wnum=None, radiance=None, temperature=None, units='cm')[source]¶
Planck function to convert radiance to temperature or temperature to radiance given a corresponding wavenumber value.
Constants have been updated to reflect those used on the NOAA site https://ncc.nesdis.noaa.gov/data/planck.html
- Parameters:
wnum (float or list or numpy array) – Wave number for corresponding radiance or temperature value.
radiance (float or list or numpy array) – Radiance value of corresponding wavenumber in W/m^2/sr/cm.
temperature (float or list or numpy array) – Temperature value of corresponding wavenumber in degK/cm.
units (string) – Units value to use. Default to cm, other option is m
References
This procedure was created for the AERI vs. IRT comparison from F77 code orginally written by Jim Liligren and passed to the DQO by the ARM IRT mentor.
Example
> planck_converter(wnum=1100, temperature=300) 81.49372361846207
> planck_converter(wnum=1100, radiance=81.49) 299.9974150039702