THIS PROPOSAL IS FOCUSED ON MAINTENANCE OF THE DAILY MODIS ALBEDO, NADIR REFLECTANCE AND SURFACE ANISOTROPY PRODUCTS (MCD43) PRODUCTS THROUGH TO THE END OF THE AQUA AND TERRA RECORDS. THESE MODIS PRODUCTS WERE BEGUN IN 2000 WITH TERRA OBSERVATIONS AND WERE REFINED WITH THE ADDITION OF AQUA OBSERVATIONS IN 2002 (LUCHT ET AL., 2000; SCHAAF ET AL., 2002; 2011; CESCATTI ET AL., 2012; WANG ET AL., 2014). AS THIS PRODUCT USES BOTH TERRA AND AQUA MODIS VALUES, THIS PROPOSAL IS BEING SENT TO BOTH THE TERRA AND AQUA PROJECT SCIENTISTS, AND CONTINUED MEMBERSHIP IN BOTH THE TERRA AND AQUA SCIENCE TEAMS IS REQUESTED. ALBEDO (THE REFLECTIVITY OF THE EARTH'S SURFACE WHICH GOVERNS THE SURFACE ENERGY BUDGET) IS AN ESSENTIAL CLIMATE VARIABLE (ECV), WHILE VIEW-ANGLE-CORRECTED NADIR REFLECTANCES ARE IN HIGH DEMAND FOR MONITORING VEGETATION PHENOLOGY, SNOW-MELT REGIMES, DISTURBANCE, AND LAND COVER CHANGE (ZHANG ET AL.,2006; ZHANG ET AL., 2016; LIANG ET AL., 2014; SHUAI ET AL., 2013; FRIEDL ET AL., 2010; GANGULY ET AL, 2010; GRAY ET AL., 2014; HUFKINS ET AL., 2012; SULLA-MENASHE ET AL., 2013; GRAY ET AL., 2014; STROEVE ET AL, 2013). THEREFORE THESE HIGH-QUALITY MODIS GLOBAL PRODUCTS HAVE BEEN ENTHUSIASTICALLY EMBRACED BY THE MODELING AND MONITORING COMMUNITIES OVER THE PAST 16 YEARS. HIGH QUALITY MODIS ALBEDOS ARE USED IN THE COUPLED MODEL LNTERCOMPARISON PROJECT (CMIP) TO IMPROVE THE UNDERSTANDING OF BIAS AND UNCERTAINTY BETWEEN MODELS (PARTICULARLY IN AREAS OF SNOW-COVERED VEGETATION), AND FURTHER USED TO REFINE THE SIMULATION OF ALBEDO IN LAND SURFACE MODELS (THACKERAY ET AL., 2015; WANG ET AL., 2016; KALA ET AL., 2014; MORCRETTE ET AL., 2008; LAWRENCE AND CHASE, 2009; HOULDCROFT ET AL., 2009; WANG ET AL., 2014) . THE TERRA+AQUA MCD43 PRODUCT RELIES ON MULTI-DAY, CLOUD-FREE, ATMOSPHERICALLY-CORRECTED SURFACE REFLECTANCES TO ESTABLISH A DAILY 500M GRIDDED REPRESENTATION OF THE SURFACE ANISOTROPY OF THE GLOBAL LAND SURFACE. THIS ANISOTROPY RETRIEVAL (AS DESCRIBED BY A SEMI-EMPIRICAL, KERNEL-DRIVEN BIDIRECTIONAL REFLECTANCE DISTRIBUTION (BRDF) MODEL) IS OPTIMIZED FOR SURFACE CONDITIONS ON A SINGLE DAY (THUS THE PRODUCT PROVIDES EITHER A SNOW RETRIEVAL OR A SNOW FREE RETRIEVAL DEPENDING ON THE CONDITIONS ON THE DAY OF INTEREST (WANG ET AL., 2014)). THIS ANISOTROPY MODEL IS THEN USED TO PROVIDE INTRINSIC DAILY MEASURES OF SURFACE ALBEDO AND VIEW-ANGLE CORRECTED NADIR SURFACE REFLECTANCES (NADIR BRDF-ADJUSTED SURFACE REFLECTANCE - NBAR). THE COLLECTION V006 OF THE MODIS MCD43 PRODUCT (AVAILABLE FROM THE LPDAAC AT EDC) OFFERS DAILY RETRIEVALS OF THE BRDF MODEL PARAMETERS, FROM WHICH THE NBAR FOR THE FIRST SEVEN MODIS LAND BANDS, THE BLACK-SKY ALBEDO (DIRECTIONAL HEMISPHERICAL ALBEDO AT LOCAL SOLAR NOON), AND THE FULLY DIFFUSE WHITE-SKY ALBEDO (BIHEMISPHERICAL ALBEDO UNDER ISOTROPIC ILLUMINATION) FOR THE FIRST SEVEN MODIS BANDS AND THREE DERIVED BROADBANDS (0.3-0.7 M, 0.7-5.0 M AND 0 .3-5.0 M AND WHITE-SKY ALBEDO) ARE GENERATED. USERS CAN MAKE USE OF THE BRDF PARAMETERS THEMSELVES TO PRODUCE NBAR AND BLACK-SKY ALBEDO VALUES AT OTHER DESIRED SOLAR ZENITH ANGLES AND FURTHERMORE CAN COUPLE THE BLACK-SKY ALBEDO AND WHITE-SKY ALBEDO AS A FUNCTION OF AEROSOL OPTICAL DEPTH TO PRODUCE AN ACTUAL INSTANTANEOUS ALBEDO AS WOULD BE MEASURED BY TOWER MOUNTED SURFACE ALBEDOMETERS (ROMAN ET AL., 2010). THE BRDF PARAMETERS ARE ALSO IN DEMAND BY OTHER INSTRUMENT TEAMS AS A PRIORI AND EVALUATION INFORMATION ABOUT GLOBAL SURFACE REFLECTIVITY (E.G. MERIS GLOBALBEDO (MUELLER ET AL., 2007), AATSR AEROSOLS (SAYER ET AL., 2012), MSG/SEVIRI ALBEDO (CARRER ET AL., 2010), AVHRR ALBEDO (SILTTERLIN ET AL., 2015), LANDSAT ALBEDO (SHUAI ET AL., 2011; WANG ET AL., 2016; ROY ET AL., 2016)). THE AVAILABILITY .OF DAILY RETRIEVALS HAS GREATLY EXPANDED THEIR USE FOR STUDIES ON PHENOLOGY, SNOW-MELT, AND RAPIDLY OCCURRING DISTURBANCES AND LAND COVER CHANGE (NOTE THAT ONLY 8-DAY RETRIEVALS WERE AVAILABLE PRIOR TO V006 REPROCESSING). ALTHOUGH THE OVERALL NUMBER OF GLOBAL HIGH QUALITY RETRIEVAL