ICE WATER PATH (IWP) AND ICE PARTICLE EFFECTIVE DIAMETER (DEFF) ARE TWO SIGNIFICANT VARIABLES IN RESOLVING CLOUD RADIATIVE PROPERTIES. CONSIDERABLE DISCREPANCIES IN IWP VALUES CURRENTLY EXIST IN GENERAL CIRCULATION MODELS (GCMS). THESE DISCREPANCIES ARE LARGELY THE PRODUCT OF POOR ASSUMPTIONS ABOUT THE MICRO AND MACRO-PHYSICAL PROPERTIES OF ICE CLOUDS. THE GOAL OF THE PRESENT RESEARCH IS TO DEVELOP A BISPECTRAL RETRIEVAL TECHNIQUE UTILIZING SUB-MILLIMETER (SUB-MM) AND THERMAL INFRARED (TIR) WAVE RADIOMETRY TO ACCURATELY RETRIEVE CLOUD IWP AND DEFF. A PRELIMINARY ANALYSIS WAS CONDUCTED TO DETERMINE SENSITIVITY BETWEEN MILLIMETER (MM) SUB-MM AND TIR BANDS. RESULTS OF THE ANALYSIS SHOWED SENSITIVITY BETWEEN SUB-MM (874 GHZ) AND TIR BANDS (11 12 MICROMETER) REACHED A MAXIMUM FOR THIN CLOUDS (IWP<100 G/M2) COMPRISING SMALL ICE PARTICLES (DEFF<100 MICROMETER). THE DIFFERENCE OF VERTICALLY AND HORIZONTALLY POLARIZED BRIGHTNESS TEMPERATURES (PD) WHICH OFFERS INFORMATION ON ICE PARTICLE DEFF AND SHAPE WAS ALSO INVESTIGATED. THE RESULTS SHOWED THAT REGARDLESS OF IWP A PD SIGNAL WAS PRESENT FROM EITHER SUB-MM OR TIR BANDS OVER A WIDE RANGE OF THE CRYSTAL SIZE SPECTRUM. THE PRELIMINARY INVESTIGATIONS DEMONSTRATE CONFIDENCE OF THE FEASIBILITY TO ACCOMPLISH THE GOAL OF THIS RESEARCH. FUTURE WORK WILL BE CENTERED AROUND THE EFFECTS OF CHANGING PARTICLE HABITS AND MIXING RATIOS ON PD SIGNALS FURTHERING UNDERSTANDING OF THE RELATIONSHIP BETWEEN PD AND THE DIFFERENCE OF CLOUDY AND CLEAR SKY BRIGHTNESS TEMPERATURES AND DEVELOPING A ROBUST BISPECTRAL RETRIEVAL SCHEME TO DETERMINE CLOUD IWP AND DEFF.