NOAA Climate Data Record (CDR) of Visible and Near Infrared Reflectance from AVHRR, Version 1.0

The AVHRR visible gains and offsets convert GAC pixel level counts to radiances and are provided for each visible band encompassing TIROS-N, NOAA-6 through NOAA-19 and Metop-A and B satellites. The resulting radiances are referenced to the Aqua-MODIS band 1 and 2 absolute calibration. Instructions are also given to convert AVHRR-3 (NOAA-15 to Metop-B) GAC high and low gain counts to the proper radiance. The gains vary temporally and are given as a function of day since launch, where the launch date is provided. The satellite and band specific solar constants are also provided to convert radiances into reflectances based on the solar incoming irradiance used by the MODIS Science Team. The resulting radiance uncertainty is given in %. The calibration coefficients are only valid for the start and end dates listed for each satellite. Three data variables are derived from 4 km AVHRR Global Area Coverage data: Calibrated 0.63 micron channel reflectance (unitless), Calibrated 0.86 micron reflectance (unitless), Calibrated 1.61 micron reflectance (unitless)

Tags: 1 km, 1 km - < 10 km or approximately .01 degree - < .09 degree, advanced very high resolution radiometer, advanced very high resolution radiometer-2, advanced very high resolution radiometer-3, albedo, atmosphere, atmospheric - composition - earth radiation budget, atmospheric - composition - surface radiation budget, atmospheric radiation, avhrr, avhrr-2, avhrr-3, boundary layer, cloud properties, cloud radiative transfer, clouds, doc/noaa/nesdis/ncdc, doc/noaa/nesdis/ncei, earth science, geographic region, geostationary operational environmental satellite 1, geostationary operational environmental satellite 10, geostationary operational environmental satellite 11, geostationary operational environmental satellite 12, geostationary operational environmental satellite 13, geostationary operational environmental satellite 2, geostationary operational environmental satellite 3, geostationary operational environmental satellite 4, geostationary operational environmental satellite 5, geostationary operational environmental satellite 6, geostationary operational environmental satellite 7, geostationary operational environmental satellite 8, geostationary operational environmental satellite 9, global, goes i-m imager, goes-1, goes-10, goes-11, goes-12, goes-13, goes-2, goes-3, goes-4, goes-5, goes-6, goes-7, goes-8, goes-9, hourly - < daily, land surface, langley research center, meteorological operational satellite - a, meteorological operational satellite - b, metop-a, metop-b, nasa, national centers for environmental information, national climatic data center, national oceanic & atmospheric administration-10, national oceanic & atmospheric administration-11, national oceanic & atmospheric administration-12, national oceanic & atmospheric administration-14, national oceanic & atmospheric administration-15, national oceanic & atmospheric administration-16, national oceanic & atmospheric administration-17, national oceanic & atmospheric administration-18, national oceanic & atmospheric administration-19, national oceanic & atmospheric administration-6, national oceanic & atmospheric administration-7, national oceanic & atmospheric administration-8, national oceanic & atmospheric administration-9, nesdis, noaa, noaa climate data record (cdr) program, noaa onestop project, noaa-10, noaa-11, noaa-12, noaa-14, noaa-15, noaa-16, noaa-17, noaa-18, noaa-19, noaa-6, noaa-7, noaa-8, noaa-9, reflectance, satellite, science directorate, shortwave radiation, solar radiation, stratosphere, surface radiative properties, television infrared observation satellite-n, tiros-n, u.s. department of commerce, vertical location
Organization: National Oceanic and Atmospheric Administration, Department of Commerce