Intensity correction method for DISORT radiative transfer solver. Valid options are phase (default), i.e. the phase function is used for the Nakajima intensity correction (Nakajima and Tanaka, 1988), and moments, i.e. the Legendre moments are used for the correction (Buras et al., 2011). Optionally, the option off turns off the intensity correction.
Nakajima, T., & Tanaka, M., (1988), "Algorithms for radiative intensity calculations in moderately thick atmospheres using a truncation approximation." J. Quant. Spectrosc. Radiat. Transfer. Vol. 40, pp. 51‒ 69.
Buras, R., Dowling, T., & Emde, C., (2011), "New secondary-scattering correction in DISORTwith increased efficiency for forward scattering." J. Quant. Spectrosc. Radiat. Transfer. Vol. 112, pp. 2028‒ 2034.