Not listed THE PROJECT GOALS ARE TO DETERMINE QUANTITATIVELY THE EFFECTS OF MINERAL PARTICLE CLUSTERING ON MARS SPACECRAFT SPECTRAL SIGNATURES AND TO REFINE AND ACCELERATE THE PRODUCTION OF REFRACTIVE INDICES (OPTICAL FUNCTIONS N K) CORRESPONDING TO THE MARS DUST LABORATORY ANALOG SPECTRA SUPPLIED TO RELAB AND MRO CRISM LIBRARIES. MARS ANALOG MINERALS AND ACTUAL MARS SOIL TEND TO FORM AGGREGATES FROM PARTICLES THE SIZE OF MARTIAN ATMOSPHERIC DUST. WHEREAS SPECTRAL PROPERTIES ARE DOMINATED BY THE AGGREGATES ANALYTIC RADIATIVE TRANSFER SOLUTIONS USED TO INTERPRET PLANETARY SURFACES ASSUME THAT INDIVIDUAL WELLSEPARATED PARTICLES DOMINATE THE SPECTRAL SIGNATURE. THUS THE COMMUNITY IS ROUTINELY ASSUMING THE WRONG SINGLE SCATTERING ALBEDO AND PHASE FUNCTIONS FOR MARS MINERALS AND POSSIBLY INFERRING COMPOSITION GRAIN SIZES AND ABUNDANCES INCORRECTLY AS A RESULT. WE INVESTIGATE THE EFFECT OF CHANGING SUCH ASSUMPTIONS FOR MARS-RELEVANT ATMOSPHERIC AND SURFACE DUST MINERALS. OUR DELIVERABLES WILL DIRECTLY IMPROVE THE UNDERSTANDING OF MARS IN THE AREAS OF IDENTIFYING MAPPING THE DISTRIBUTIONS AND QUANTIFYING ABUNDANCES FOR THESE MINERALS AND WILL ADDRESS LONG-STANDING QUESTIONS ON FUNDAMENTAL PHYSICS IN THE MARTIAN SURFACE (E.G. WHAT IS THE FUNDAMENTAL SCATTERING UNIT FOR CLOSELY PACKED DUST OR REGOLITH GRAINS?). $0 7/29/16 1 THE PROJECT GOALS ARE TO DETERMINE QUANTITATIVELY THE EFFECTS OF MINERAL PARTICLE CLUSTERING ON MARS SPACECRAFT SPECTRAL SIGNATURES AND TO REFINE AND ACCELERATE THE PRODUCTION OF REFRACTIVE INDICES (OPTICAL FUNCTIONS N, K) CORRESPONDING TO THE MARS DUST LABORATORY ANALOG SPECTRA SUPPLIED TO RELAB AND MRO CRISM LIBRARIES. MARS ANALOG MINERALS AND ACTUAL MARS SOIL TEND TO FORM AGGREGATES FROM PARTICLES THE SIZE OF MARTIAN ATMOSPHERIC DUST. WHEREAS SPECTRAL PROPERTIES ARE DOMINATED BY THE AGGREGATES, ANALYTIC RADIATIVE TRANSFER SOLUTIONS USED TO INTERPRET PLANETARY SURFACES ASSUME THAT INDIVIDUAL, WELLSEPARATED PARTICLES DOMINATE THE SPECTRAL SIGNATURE. THUS, THE COMMUNITY IS ROUTINELY ASSUMING THE WRONG SINGLE SCATTERING ALBEDO AND PHASE FUNCTIONS FOR MARS MINERALS, AND POSSIBLY INFERRING COMPOSITION, GRAIN SIZES, AND ABUNDANCES INCORRECTLY AS A RESULT. WE INVESTIGATE THE EFFECT OF CHANGING SUCH ASSUMPTIONS FOR MARS-RELEVANT ATMOSPHERIC AND SURFACE DUST MINERALS. OUR DELIVERABLES WILL DIRECTLY IMPROVE THE UNDERSTANDING OF MARS IN THE AREAS OF IDENTIFYING, MAPPING THE DISTRIBUTIONS, AND QUANTIFYING ABUNDANCES FOR THESE MINERALS AND WILL ADDRESS LONG-STANDING QUESTIONS ON FUNDAMENTAL PHYSICS IN THE MARTIAN SURFACE (E.G., WHAT IS THE FUNDAMENTAL SCATTERING UNIT FOR CLOSELY PACKED DUST OR REGOLITH GRAINS?). Funding Only Action $0 7/29/16 Not listed THE PROJECT GOALS ARE TO DETERMINE QUANTITATIVELY THE EFFECTS OF MINERAL PARTICLE CLUSTERING ON MARS SPACECRAFT SPECTRAL SIGNATURES AND TO REFINE AND $78.1k 8/20/15 Not listed THE PROJECT GOALS ARE TO DETERMINE QUANTITATIVELY THE EFFECTS OF MINERAL PARTICLE CLUSTERING ON MARS SPACECRAFT SPECTRAL SIGNATURES AND TO REFINE AND ACCELERATE THE PRODUCTION OF REFRACTIVE INDICES (OPTICAL FUNCTIONS N, K) CORRESPONDING TO THE MARS DUST LABORATORY ANALOG SPECTRA SUPPLIED TO RELAB AND MRO CRISM LIBRARIES. MARS ANALOG MINERALS AND ACTUAL MARS SOIL TEND TO FORM AGGREGATES FROM PARTICLES THE SIZE OF MARTIAN ATMOSPHERIC DUST. WHEREAS SPECTRAL PROPERTIES ARE DOMINATED BY THE AGGREGATES, ANALYTIC RADIATIVE TRANSFER SOLUTIONS USED TO INTERPRET PLANETARY SURFACES ASSUME THAT INDIVIDUAL, WELLSEPARATED PARTICLES DOMINATE THE SPECTRAL SIGNATURE. THUS, THE COMMUNITY IS ROUTINELY ASSUMING THE WRONG SINGLE SCATTERING ALBEDO AND PHASE FUNCTIONS FOR MARS MINERALS, AND POSSIBLY INFERRING COMPOSITION, GRAIN SIZES, AND ABUNDANCES INCORRECTLY AS A RESULT. WE INVESTIGATE THE EFFECT OF CHANGING SUCH ASSUMPTIONS FOR MARS-RELEVANT ATMOSPHERIC AND SURFACE DUST MINERALS. OUR DELIVERABLES WILL DIRECTLY IMPROVE THE UNDERSTANDING OF MARS IN THE AREAS OF IDENTIFYING, MAPPING THE DISTRIBUTIONS, AND QUANTIFYING ABUNDANCES FOR THESE MINERALS AND WILL ADDRESS LONG-STANDING QUESTIONS ON FUNDAMENTAL PHYSICS IN THE MARTIAN SURFACE (E.G., WHAT IS THE FUNDAMENTAL SCATTERING UNIT FOR CLOSELY PACKED DUST OR REGOLITH GRAINS?). Not listed $78.1k 8/20/15