BBT Flag: Write Brightness Temperature Spectra |
BBT = C2 * ν / LOG ( 1 + C1 * ν**3 / RAD )where C1,C2 are the radiation constants, approx 1.191E-3 nW/(cm^{2} sr (cm^{-1})^{4}) and 1.439 K/cm^{-1} respectively (actual values in phycon.inc, or in phycon_dat.f90 for RFM v5.0 ), ν is the wavenumber [cm^{-1}], RAD is the radiance [nW/(cm^{2} sr cm^{-1})].