6. One paragraph description of your model (e.g. abstract from report or
   paper);

Modifying SNTHERM (energy-budget model) to include a full discrete ordinate
radiative transfer. Extra data required for surface boundary; direct/
diffuse and spectral split in each (nine bands). This derived from
measured global radiation and predicted clear sky radiation using
a derived 'cloudiness' factor


50. Please provide references relevant to the model description and use.

  Jordan R., 1991, A one-dimensional temperature model for a snow cover. 
Technical documentation for SNTHERM.89. U.S. Army Corps of Engineers, 
CRREL Special Report 91-16

  Stamnes K, Tsay S-C, Wiscombe W & Jayaweera K. 1988. Numerically stable 
algorithm for discrete-ordinate-method radiative transfer in multiple 
scattering and emitting layered media. Applied Optics, 27, no.12, 2502-2509

  Vermote E, Tanri D., Deuzi J.L., Herman M., Morcette J.J., Second 
Simulation of the Satellite Signal in the Solar Spectrum (6S), Version 
3.2, User Manual , FTP site: kratmos.gsfc.nasa.gov