specrad_frequency_to_planck_bt

typhon.physics.units.specrad_frequency_to_planck_bt(L, f)

Convert spectral radiance per frequency to brightness temperature

This function converts monochromatic spectral radiance per frequency to Planck brightness temperature. This is calculated by inverting the Planck function.

Note that this function is NOT correct to estimate polychromatic brightness temperatures such as channel brightness temperatures. For this, you need the spectral response function — see the SRF class.

Parameters:

• L – Spectral radiance [W m^-2 sr^-1 Hz^-1]

• f – Corresponding frequency [Hz]

Returns:

Planck brightness temperature [K].