gov.noaa.ncdc:C01557 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact 2025-12-16T15:05:30 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA Climate Data Record (CDR) of AVHRR Surface Reflectance, Version 5 AVHRR Surface Reflectance 2019-07-11 publication Version 5 doi:10.7289/V53776Z4 NCEI DSI 3669_02 gov.noaa.ncdc:C01557 gov.nasa.gsfc:AVH09C1 Access Identifier avhrr-land-surface-reflectance Vermote, Eric NASA Goddard Space Flight Center https://www.webofscience.com/wos/author/record/K-3733-2012/ HTTPS Web Browser K-3733-2012 Web of Science ResearcherID of the author. information principalInvestigator Vermote, Eric NASA Goddard Space Flight Center https://www.webofscience.com/wos/author/record/K-3733-2012/ HTTPS Web Browser K-3733-2012 Web of Science ResearcherID of the author. information author NOAA CDR Program collaborator NOAA CDR Program author NOAA National Centers for Environmental Information publisher imageDigital This dataset contains gridded daily surface reflectance and brightness temperatures derived from the Advanced Very High Resolution Radiometer (AVHRR) sensors onboard eight NOAA polar orbiting satellites: NOAA-7, -9, -11, -14, -16, -17, -18 and -19. Surface reflectance from AVHRR channels 1 and 2 (at 640 and 860 nm) are a NOAA Climate Data Record (CDR). The dataset spans from 1981 to 2013, and was processed from the AVHRR Global Area Coverage (GAC) Level 1b dataset. AVHRR GAC observations are packaged into data arrays with latitude and longitude dimensions of 3600 x 7200 covering the globe at 0.05 degree spatial resolution. This dataset is one of the Land Surface CDR Version 5 products produced by the NASA Goddard Space Flight Center (GSFC) and the University of Maryland (UMD). Other Land Surface CDR products include the Normalized Difference Vegetation Index (NDVI), Leaf Area Index (LAI) and Fraction of Absorbed Photosynthetically Active Radiation (FAPAR). Scientific improvements for Version 5 include updating to higher resolution ancillary data and more accurate approaches for BRDF correction, calibration, compositing, and QA. Version 5 also corrects the data for known errors in time, latitude, and longitude variables, as well as improves the global and variable attribute definitions. The dataset is in the netCDF-4 file format following ACDD and CF Conventions. The dataset is accompanied by algorithm documentation, data flow diagram and source code for the NOAA CDR Program. This dataset was produced to provide scientific researchers a high quality Climate Data Record (CDR) of land surface reflectance. Surface Reflectance provides a measure of the fraction of incoming solar radiation that is reflected from Earth's surface in two spectral ranges of the Advanced Very High Resolution Radiometer (AVHRR) sensors: red (around 640 nm) and the near infrared (around 860 nm). As a key variable, Surface Reflectance supplies the primary input for essentially all higher-level land surface geophysical parameters. The Surface Reflectance CDR delivers valuable surface information dating back to 1981 as a daily product on a 0.05 degree by 0.05 degree grid. DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce NOAA Climate Data Record Program Office 1-828-271-4800 1-828-271-4328 151 Patton Avenue Veach-Baley Federal Building, Room 447 Asheville NC 28801-5001 USA land_sfc_bundle_contacts@noaa.gov https://www.ncei.noaa.gov/products/climate-data-records HTTPS Web Browser CDR Program Contacts Contact information for the CDR Program. information 8:00 - 6:00 Eastern pointOfContact daily https://www.ncei.noaa.gov/pub/data/metadata/images/C01557_AVHRRSurfaceReflectance.png Global image of daily AVHRR Surface Reflectance. PNG Earth Science > Land Surface > Surface Radiative Properties > Reflectance Earth Science > Spectral/Engineering > Infrared Wavelengths > Brightness Temperature theme Global Change Master Directory (GCMD) Science Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Geographic Region > Global Land place Global Change Master Directory (GCMD) Location Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher NOAA Climate Data Record (CDR) Program NOAA OneStop Project project Global Change Master Directory (GCMD) Project Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher AVHRR > Advanced Very High Resolution Radiometer instrument Global Change Master Directory (GCMD) Instrument Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher NOAA-7 > National Oceanic & Atmospheric Administration-7 NOAA-9 > National Oceanic & Atmospheric Administration-9 NOAA-11 > National Oceanic & Atmospheric Administration-11 NOAA-14 > National Oceanic & Atmospheric Administration-14 NOAA-16 > National Oceanic & Atmospheric Administration-16 NOAA-17 > National Oceanic & Atmospheric Administration-17 NOAA-18 > National Oceanic & Atmospheric Administration-18 NOAA-19 > National Oceanic & Atmospheric Administration-19 platform Global Change Master Directory (GCMD) Platform Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce NASA/GSFC > Goddard Space Flight Center, NASA UMD > University of Maryland dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher See the Algorithm Theoretical Basis Document (ATBD) for a description of this dataset's use limitations. otherRestrictions Cite as: Vermote, Eric; NOAA CDR Program. (2019): NOAA Climate Data Record (CDR) of AVHRR Surface Reflectance, Version 5. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V53776Z4. Accessed [date]. otherRestrictions See the Use Agreement for this dataset available on the CDR page. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. NASA Land Long Term Data Record (LTDR) NASA Goddard Space Flight Center publisher https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/applications/ltdr/ HTTPS Web Browser NASA Land Long Term Data Record (LTDR) project page Project page with dataset information. information crossReference project A 30+ Year AVHRR Land Surface Reflectance Climate Data Record and Its Application to Wheat Yield Monitoring. 2017-03 publication Franch, Belen coAuthor Vermote, Eric F. coAuthor Roger, Jean-Claude coAuthor Murphy, Emilie coAuthor Becker-Reshef, Inbal coAuthor Justice, Chris coAuthor Claverie, Martin coAuthor Nagol, Jyoteshwar coAuthor Csiszar, Ivan coAuthor Meyer, Dave coAuthor Baret, Frederic coAuthor Masuoka, Edward coAuthor Wolfe, Robert coAuthor Devadiga, Sadashiva coAuthor Remote Sensing publisher https://doi.org/10.3390/rs9030296 HTTPS Web Browser Journal Article published March 2017 by Remote Sensing Franch, Belen & Vermote, Eric F. & Roger, Jean-Claude & Murphy, Emilie & Becker-Reshef, Inbal & Justice, Chris & Claverie, Martin & Nagol, Jyoteshwar & Csiszar, Ivan & Meyer, Dave & Frederic, Baret & Edward, Masuoka & Wolfe, Robert & Devadiga, Sadashiva. (2017). A 30+ Year AVHRR Land Surface Reflectance Climate Data Record and Its Application to Wheat Yield Monitoring. Remote Sensing. 9. https://doi.org/10.3390/rs9030296. information crossReference sciencePaper Other publications that cite this dataset https://scholar.google.com/scholar?q=10.7289/V53776Z4+OR+10.3390/rs9030296 HTTPS Web Browser Google Scholar search results Search results for publications that cite this dataset by its DOI(s). information crossReference project NOAA Climate Data Record (CDR) of VIIRS Surface Reflectance, Version 1 2022 publication NOAA National Centers for Environmental Information publisher https://doi.org/10.25921/e86y-fe34 HTTPS Web Browser NCEI landing page for VIIRS Surface Reflectance, Version 1 Source dataset landing page. information crossReference collection NOAA Climate Data Record (CDR) of AVHRR Normalized Difference Vegetation Index (NDVI), Version 5 2019 publication NOAA National Centers for Environmental Information publisher https://doi.org/10.7289/V5ZG6QH9 HTTPS Web Browser NCEI landing page for AVHRR Normalized Difference Vegetation Index, Version 5 Related dataset landing page. information crossReference project NOAA Climate Data Record (CDR) of AVHRR Leaf Area Index (LAI) and Fraction of Absorbed Photosynthetically Active Radiation (FAPAR), Version 5 2019 publication NOAA National Centers for Environmental Information publisher https://doi.org/10.7289/V5TT4P69 HTTPS Web Browser NCEI landing page for AVHRR Leaf Area Index and FAPAR, Version 5 Related dataset landing page. information crossReference project grid eng; USA climatologyMeteorologyAtmosphere 1 -180.0 180.0 -90.0 90.0 ground condition 1981-06-24 2013-12-31 1 AVHRR-Land_v005_AVH09C1_NOAA-XX_YYYYMMDD_cYYYYMMDDHHMMSS.nc physicalMeasurement latitude float latitude (latitude) longitude float longitude (longitude) time float time (time) SREFL_CH1 short NOAA Climate Data Record of Surface Reflectance at 640 nm (surface_bidirectional_reflectance) SREFL_CH2 short NOAA Climate Data Record of Surface Reflectance at 860 nm (surface_bidirectional_reflectance) BT_CH3 short Brightness Temperature at 3.75 microns (toa_brightness_temperature) BT_CH4 short Brightness Temperature at 11.0 microns (toa_brightness_temperature) BT_CH5 short Brightness Temperature at 12.0 microns (toa_brightness_temperature) SREFL_CH3 short Surface Reflectance at 3.75 microns SZEN short Solar Zenith Angle (solar_zenith_angle) VZEN short View Zenith Angle (sensor_zenith_angle) RELAZ short Relative Azimuth (relative_sensor_azimuth_angle) TIMEOFDAY short Time since Start of Data Day QA short Quality Control NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. NetCDF 4 The NetCDF data files comply with the Climate and Forecast (CF) Metadata Conventions and the NetCDF Attribute Convention for Dataset Discovery (ACDD). https://doi.org/10.7289/V53776Z4 HTTPS Landing Page NCEI Dataset Landing Page Landing page for the dataset. information https://www.ncei.noaa.gov/products/climate-data-records/avhrr-surface-reflectance HTTPS Information NOAA CDR page Access to the published CDR, documentation and source code. information https://www.ncei.noaa.gov/data/land-surface-reflectance/access/ HTTPS Download Direct Download (Dataset Files) Direct download for the dataset download https://www.ncei.noaa.gov/thredds/catalog/satellite/surface-reflectance.html HTTPS THREDDS THREDDS THREDDS Data Server (TDS) for the dataset download dataset This dataset was produced by the NASA Goddard Space Flight Center (GSFC) and the University of Maryland (UMD), and is archived at the NOAA National Centers for Environmental Information (NCEI). For a description of the processing steps, see the Algorithm Theoretical Basis Document and the Data Flow Diagram for this dataset. NASA Goddard Space Flight Center processor University of Maryland processor CDR Version 5 AVHRR Surface Reflectance Source Code 2019 publication Version 5 NOAA National Centers for Environmental Information publisher https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/Surface_Reflectance/AVHRR/SourceCodeAVHRR_01B-20a.tar.gz HTTPS Web Browser CDR Source Code This source code is for reference only. The source code is provided to maintain transparency of the algorithm and processes used in creating the Climate Data Record (CDR). The source code is not intended to be portable to any computer system(s) beyond that of the original CDR producer's environment. download Flowcharts Vegetation CDR 2013 publication Version 5 Rev. 1 CDRP-DIA-0460 NOAA National Centers for Environmental Information publisher https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/Surface_Reflectance/AVHRR/DataFlowDiagramAVHRR_01B-20a.pdf HTTPS Web Browser CDR Data Flow Diagram Data processing flowchart for the CDR. information Climate Algorithm Theoretical Basis Document (C-ATBD) 2018 publication Version 5 Rev. 2 CDRP-ATBD-0459 NOAA National Centers for Environmental Information publisher https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/Surface_Reflectance/AVHRR/AlgorithmDescriptionAVHRR_01B-20a.pdf HTTPS Web Browser CDR Algorithm Description Algorithm Theoretical Basis Document for the CDR. information NOAA AVHRR Global Area Coverage (GAC) Level 1b dataset Navy One Line Element (OLE) Clock Correction Table and Vicarious Calibration LUT TOMS Ozone Data (39 km x 39 km at nadir) NCEP Reanalysis Water Vapor (0.5 degree) USGS Digital Elevation Model (DEM) (0.05 degree) MODIS Land/Water Mask (0.05 degree) Tropospheric and Stratospheric Aerosol Climatology BRDF Database and BRDF-corrected Reflectance Climatology (0.05 degree) repository NOAA National Centers for Environmental Information NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015. 2015-04-22T00:00:00 asNeeded Bulk metadata change applied on 2023-06-23. See version control repository history for metadata change details.