Visible Infrared Solar-Infrared Split Window Technique (VISST) 

+ Algorithm 
   - Daytime 
   - 0.65, 3.9, 10.8, 12.0 µm channels 
   - Utilizes parameterization of theoretical radiance calculations for 7 water 
     and 9 ice crystal size distributions 
   - Retrieves cloud optical properties by matching calculations to observations 

+ Required Inputs 
   - Atmospheric profiles from model runs or in situ measurements 
   - Surface characterization from IGBP 10 minute map 
   - Uses CERES cloud mask algorithm 
   - Clear sky reflectances from CERES 
   - Narrowband to Broadband flux conversion functions 
   - Satellite data (GOES 8-10, 12; 4-km: AVHRR, 1 or 4-km) 

+ Products 
   - Pixel-level and gridded cloud properties (t, Re, LWP, IWP, Phase, etc) 

+ Domains 
   - ARM SGP, ARM TWP, CONUS East and West 
 
  Solar-Infrared Infrared Split Window Technique (SIST)

+ Algorithm 
  - Night 
  - 3.9, 10.8, 12.0 µm channels 
  - Minimum error, iterative regression method 
  - Retrieves cloud optical properties by matching calculations to observations 
  
+ Required Inputs 
  - Atmospheric profiles from model runs or in situ measurements 
  - Surface characterization from IGBP 10 minute map 
  - Uses CERES cloud mask algorithm 
  - Clear sky reflectances from CERES 
  - Narrowband to Broadband flux conversion functions 
  - Satellite data (GOES 8-10, 12; 4-km: AVHRR, 1 or 4-km) 

+ Products 
  - Pixel-level and gridded cloud properties (t, Re, LWP, IWP, Phase, etc) 

+ Domains 
  - ARM SGP, ARM TWP, CONUS East and West 
  
                            (Ref: Minnis et al., 1995, NASA RP 1376, pp135-164)