GCIP/EOP Land Characterization: NOAA/NESDIS/ORA Land Surface Team GVI Products https://data.eol.ucar.edu/dataset/21.076 Summary The third generation Global Vegetation Index (GVI) weekly composite data are produced operationally by NOAA/NESDIS and includes conversion of counts to reflectances and brightness temperatures using the post-launch calibration and non-linearity correction coefficients. Cloud flags are generated and appended to each map cell. The GVI dataset represents a sample of Global Area Coverage (GAC) observations mapped into 0.144 degree resolution maps in equal-angle projection (Plate Carree). A 7-day composite is a mosaic of observations produced by retaining data for each map cell corresponding to the maximum difference between AVHRR channels 2 and 1. Normalized Difference Vegetation Index (NDVI) is calculated from AVHRR channel 2 and 1 reflectances using the following formula: NDVI = (CH2 - CH1) / (CH2 + CH1) Identifiers * Local archive identifier: 21.076 Citation National Climatic Data Center (NCDC), NOAA. 2001. GCIP/EOP Land Characterization: NOAA/NESDIS/ORA Land Surface Team GVI Products. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. https://data.eol.ucar.edu/dataset/21.076 Accessed 29 Mar 2024. If you plan to cite this dataset in a publication, please email us at: datahelp@eol.ucar.edu We may be able to provide an updated citation that includes a DOI. Acknowledgement In addition to the citation reference and any other acknowledgements, please acknowledge NCAR/EOL in your publications with text such as: Data provided by NCAR/EOL under the sponsorship of the National Science Foundation. https://data.eol.ucar.edu/ Related projects * GCIP/ESOP-97: GCIP Large Scale Area-North Central ESOP-97 https://data.eol.ucar.edu/project?GCIP%2FESOP-97 * GCIP/LSA-NW 00: GCIP Large Scale Area-North West EAOP-00 https://data.eol.ucar.edu/project?GCIP%2FLSA-NW+00 * GCIP/ESOP-95: GCIP Large Scale Area-South West ESOP-95 https://data.eol.ucar.edu/project?GCIP%2FESOP-95 * GCIP/ESOP-98: GCIP Large Scale Area-North Central ESOP-98 https://data.eol.ucar.edu/project?GCIP%2FESOP-98 * GCIP/EAOP-99: GCIP Large Scale Area-East EAOP-99 https://data.eol.ucar.edu/project?GCIP%2FEAOP-99 * GCIP/GIST: GCIP Integrated Systems Test https://data.eol.ucar.edu/project?GCIP%2FGIST * GCIP/LSA-NW 99: GCIP Large Scale Area-North West EAOP-99 https://data.eol.ucar.edu/project?GCIP%2FLSA-NW+99 * GCIP/EOP: GCIP Enhanced Observing Period https://data.eol.ucar.edu/project?GCIP%2FEOP * GCIP/EAOP-98: GCIP Large Scale Area-East EAOP-98 https://data.eol.ucar.edu/project?GCIP%2FEAOP-98 * GCIP/ESOP-96: GCIP Large Scale Area-South West ESOP-96 https://data.eol.ucar.edu/project?GCIP%2FESOP-96 Additional information * Spatial Type: grid * Frequency: other * Language: English Categories * Land Character Platforms * NOAA POES Instruments * Advanced Very High Resolution Radiometer - AVHRR GCMD Science Keywords * EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION INDEX > NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI) * EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > LAND USE/LAND COVER CLASSIFICATION > VEGETATION INDEX > NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI) Related links * download: http://orbit-net.nesdis.noaa.gov/crad/sat/surf/html/avhrr.html Temporal coverage * Begin datetime: 1996-04-01 00:00:00 * End datetime: 2001-09-30 23:59:59 Spatial coverage * Maximum (North) Latitude: 50.00 * Minimum (South) Latitude: 20.00 * Minimum (West) Longitude: -120.00 * Maximum (East) Longitude: -50.00 Primary contact information * pointOfContact: EOL Data Support https://data.eol.ucar.edu/contact/show/1 Additional contact information * originator: National Climatic Data Center (NCDC), NOAA https://data.eol.ucar.edu/contact/show/446 Alternate metadata formats * DataCite: https://data.eol.ucar.edu/dataset/21.076?format=datacite * ISO/TC 211: https://data.eol.ucar.edu/dataset/21.076?format=isotc211