Not listed KNOWLEDGE OF THE OPTICAL PROPERTIES OF ATMOSPHERIC CARBONACEOUS AEROSOLS ESPECIALLY IN THE ULTRAVIOLET (UV) SPECTRAL REGION IS CURRENTLY LIMITED. THIS HINDERS EFFORTS TO IDENTIFY AND QUANTIFY CARBONACEOUS AEROSOLS AND THEIR RADIATIVE AND CLIMATE-FORCING PROPERTIES WITH SATELLITE AND GROUND-BASED REMOTE SENSORS SUCH AS THE OZONE-MONITORING INSTRUMENT (OMI) ON NASA'S AURA MISSION NASA'S PROPOSED CLIMATE ABSOLUTE RADIANCE AND REFRACTIVITY OBSERVATORY (CLARREO) AND NASA'S AEROSOL ROBOTIC NETWORK (AERONET). IN TERMS OF RADIATIVE PROPERTIES THE AEROSOL SINGLE SCATTERING ALBEDO (SSA) IS OF KEY IMPORTANCE FOR THE SIGN AND QUANTITY OF AEROSOL DIRECT RADIATIVE FORCING THAT IS DOES THE AEROSOL MAKE THE EARTH LOOK DARKER (HEATING) OR WHITER (COOLING). ATMOSPHERIC LIGHT ABSORBING CARBONACEOUS AEROSOLS ARE DOMINATED BY BLACK CARBON (BC) AND BROWN CARBON (BRC) CONTAINING MOSTLY PARTICLES FROM NATURAL (I.E. BIOMASS BURNING) AND ANTHROPOGENIC (I.E. FOSSIL FUEL AND BIOMASS BURNING) ACTIVITIES. ($643) 9/18/20 5 KNOWLEDGE OF THE OPTICAL PROPERTIES OF ATMOSPHERIC CARBONACEOUS AEROSOLS, ESPECIALLY IN THE ULTRAVIOLET (UV) SPECTRAL REGION IS CURRENTLY LIMITED. THIS HINDERS EFFORTS TO IDENTIFY AND QUANTIFY CARBONACEOUS AEROSOLS AND THEIR RADIATIVE AND CLIMATE-FORCING PROPERTIES WITH SATELLITE AND GROUND-BASED REMOTE SENSORS SUCH AS THE OZONE-MONITORING INSTRUMENT (OMI) ON NASA'S AURA MISSION, NASA'S PROPOSED CLIMATE ABSOLUTE RADIANCE AND REFRACTIVITY OBSERVATORY (CLARREO), AND NASA'S AEROSOL ROBOTIC NETWORK (AERONET). IN TERMS OF RADIATIVE PROPERTIES, THE AEROSOL SINGLE SCATTERING ALBEDO (SSA) IS OF KEY IMPORTANCE FOR THE SIGN AND QUANTITY OF AEROSOL DIRECT RADIATIVE FORCING THAT IS, DOES THE AEROSOL MAKE THE EARTH LOOK DARKER (HEATING) OR WHITER (COOLING). ATMOSPHERIC LIGHT ABSORBING CARBONACEOUS AEROSOLS ARE DOMINATED BY BLACK CARBON (BC) AND BROWN CARBON (BRC) CONTAINING MOSTLY PARTICLES FROM NATURAL (I.E., BIOMASS BURNING) AND ANTHROPOGENIC (I.E., FOSSIL FUEL AND BIOMASS BURNING) ACTIVITIES. Funding Only Action ($643) 9/18/20 Not listed KNOWLEDGE OF THE OPTICAL PROPERTIES OF ATMOSPHERIC CARBONACEOUS AEROSOLS ESPECIALLY IN THE ULTRAVIOLET (UV) SPECTRAL REGION IS CURRENTLY LIMITED. THIS HINDERS EFFORTS TO IDENTIFY AND QUANTIFY CARBONACEOUS AEROSOLS AND THEIR RADIATIVE AND CLIMATE-FORCING PROPERTIES WITH SATELLITE AND GROUND-BASED REMOTE SENSORS SUCH AS THE OZONE-MONITORING INSTRUMENT (OMI) ON NASA'S AURA MISSION NASA'S PROPOSED CLIMATE ABSOLUTE RADIANCE AND REFRACTIVITY OBSERVATORY (CLARREO) AND NASA'S AEROSOL ROBOTIC NETWORK (AERONET). IN TERMS OF RADIATIVE PROPERTIES THE AEROSOL SINGLE SCATTERING ALBEDO (SSA) IS OF KEY IMPORTANCE FOR THE SIGN AND QUANTITY OF AEROSOL DIRECT RADIATIVE FORCING; THAT IS DOES THE AEROSOL MAKE THE EARTH LOOK DARKER (HEATING) OR WHITER (COOLING). ATMOSPHERIC LIGHT ABSORBING CARBONACEOUS AEROSOLS ARE DOMINATED BY BLACK CARBON (BC) AND BROWN CARBON (BRC) CONTAINING MOSTLY PARTICLES FROM NATURAL (I.E. BIOMASS BURNING) AND ANTHROPOGENIC (I.E. FOSSIL FUEL AND BIOMASS BURNING) ACTIVITIES. $0 3/18/19 4 KNOWLEDGE OF THE OPTICAL PROPERTIES OF ATMOSPHERIC CARBONACEOUS AEROSOLS, ESPECIALLY IN THE ULTRAVIOLET (UV) SPECTRAL REGION IS CURRENTLY LIMITED. THIS HINDERS EFFORTS TO IDENTIFY AND QUANTIFY CARBONACEOUS AEROSOLS AND THEIR RADIATIVE AND CLIMATE-FORCING PROPERTIES WITH SATELLITE AND GROUND-BASED REMOTE SENSORS SUCH AS THE OZONE-MONITORING INSTRUMENT (OMI) ON NASA'S AURA MISSION, NASA'S PROPOSED CLIMATE ABSOLUTE RADIANCE AND REFRACTIVITY OBSERVATORY (CLARREO), AND NASA'S AEROSOL ROBOTIC NETWORK (AERONET). IN TERMS OF RADIATIVE PROPERTIES, THE AEROSOL SINGLE SCATTERING ALBEDO (SSA) IS OF KEY IMPORTANCE FOR THE SIGN AND QUANTITY OF AEROSOL DIRECT RADIATIVE FORCING; THAT IS, DOES THE AEROSOL MAKE THE EARTH LOOK DARKER (HEATING) OR WHITER (COOLING). ATMOSPHERIC LIGHT ABSORBING CARBONACEOUS AEROSOLS ARE DOMINATED BY BLACK CARBON (BC) AND BROWN CARBON (BRC) CONTAINING MOSTLY PARTICLES FROM NATURAL (I.E., BIOMASS BURNING) AND ANTHROPOGENIC (I.E., FOSSIL FUEL AND BIOMASS BURNING) ACTIVITIES. Other Administrative Action $0 3/18/19 3 KNOWLEDGE OF THE OPTICAL PROPERTIES OF ATMOSPHERIC CARBONACEOUS AEROSOLS, ESPECIALLY IN THE ULTRAVIOLET (UV) SPECTRAL REGION IS CURRENTLY LIMITED. THIS HINDERS EFFORTS TO IDENTIFY AND QUANTIFY CARBONACEOUS AEROSOLS AND THEIR RADIATIVE AND CLIMATE-FORCING PROPERTIES WITH SATELLITE AND GROUND-BASED REMOTE SENSORS SUCH AS THE OZONE-MONITORING INSTRUMENT (OMI) ON NASA'S AURA MISSION, NASA'S PROPOSED CLIMATE ABSOLUTE RADIANCE AND REFRACTIVITY OBSERVATORY (CLARREO), AND NASA'S AEROSOL ROBOTIC NETWORK (AERONET). IN TERMS OF RADIATIVE PROPERTIES, THE AEROSOL SINGLE SCATTERING ALBEDO (SSA) IS OF KEY IMPORTANCE FOR THE SIGN AND QUANTITY OF AEROSOL DIRECT RADIATIVE FORCING; THAT IS, DOES THE AEROSOL MAKE THE EARTH LOOK DARKER (HEATING) OR WHITER (COOLING). ATMOSPHERIC LIGHT ABSORBING CARBONACEOUS AEROSOLS ARE DOMINATED BY BLACK CARBON (BC) AND BROWN CARBON (BRC) CONTAINING MOSTLY PARTICLES FROM NATURAL (I.E., BIOMASS BURNING) AND ANTHROPOGENIC (I.E., FOSSIL FUEL AND BIOMASS BURNING) ACTIVITIES. Other Administrative Action $0 4/17/18