DISALB

Transfer functions calculation mode

Attributes

string | discrete | static | unit-less | advanced

Description

The variable DISALB allows the user to select the algorithm used to calculate the atmospheric transfer functions based on MODTRAN output data. Two options are available:

  • With DISALB=F (default value), ALG implements the 2-streams MODTRAN interrogation technique developed by Guanter et al., 2009.
  • With DISALB=T, MODTRAN will automatically calculate the spherical albedo of the atmosphere and diffuse transmittance for the line-of-sight and sun-to-ground path. This is option is based on the works by (Chandrasekhar, 1950, Stamnes, 1982). Additional information can be found in: A. Berk, G.P. Anderson, P.K. Acharya, & E.P. Shettle (May 2011), "MODTRAN® 5.2.1 User's Manual document (Appendix F)", Spectral Sciences, Inc.
  • With DISALB=W, ALG implements the 4-streams MODTRAN interrogation technique developed by Verhoef and Bach, 2012.

References