SAFARI 2000 LAND COVER FROM AVHRR, 8-KM, 1984 (DEFRIES ET AL.)Entry ID: s2k_land_cover-8km
Abstract: This data set consists of a southern African subset of the University of Maryland (UMD) 8-km Global Land Cover product in ASCII GRID and binary image files formats. Over the past several years, researchers have increasingly turned to remotely sensed data to improve the accuracy of data sets that describe the geographic distribution of land cover at regional and global scales. To develop improved ... methodologies for global land cover classifications as well as to provide global land cover products for immediate use in global change research, researchers at the Laboratory for Global Remote Sensing Studies (LGRSS) at the University of Maryland (UMD) have employed the NASA/NOAA Pathfinder Land (PAL) data set with a spatial resolution of 8 km. This data set has a length of record of 14 years (1981-1994), providing the ability to test the stability of classification algorithms. Furthermore, this data set includes red, infrared, and thermal bands in addition to the Normalized Difference Vegetation Index (NDVI). Inclusion of these additional bands improves discrimination between cover types. The project aim is to develop and validate global land cover data sets and to develop advanced methodologies for more realistically describing the vegetative land surface based on satellite data. The 8-km global land cover product was derived by testing several metrics that describe the temporal dynamics of vegetation over an annual cycle. These metrics were applied to 1984 PAL data at 8-km resolution to derive a global land cover classification product using a decision tree classifier. The final product contains 13 land cover classes. The original 8-km global land cover product is available for download from the Global Land Cover Facility (GLCF) web site. Additional information and references on this data set can be found at the GLCF web site as well as at the LGRSS web site (link provided at the GLCF web site ). More information can be found at: ftp://daac.ornl.gov/data/safari2k/vegetation_wetlands/land_cover_da....
Data Set Citation
Dataset Originator/Creator: DEFRIES, R.S.HANSEN, M.SOHLBERG, R.TOWNSHEND, J.R.G.
Dataset Title: SAFARI 2000 LAND COVER FROM AVHRR, 8-KM, 1984 (DEFRIES ET AL.)
Dataset Release Date: 2002
Dataset Release Place: Oak Ridge, Tennessee, U.S.A.
Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center
Data Presentation Form: Online Files
Dataset DOI: doi:10.3334/ORNLDAAC/628Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=628&term2attribut...
Start Date: 1984-01-01Stop Date: 1984-12-31
Data Set Progress
Role: TECHNICAL CONTACT
Email: rd63 at umail.umd.edu
Laboratory for Global Remote Sensing Studies Department of Geography 2181 LeFrak Hall University of Maryland at College Park
City: College Park
Province or State: MD
Postal Code: 20742-8225
Role: DIF AUTHOR
Phone: (865) 574-7447
Email: uso at daac.ornl.gov
ORNL DAAC User Services Office Oak Ridge National Laboratory
City: Oak Ridge
Province or State: TN
Postal Code: 37831-6407
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2002-02-24
Last DIF Revision Date: 2012-02-22