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LBA REGIONAL LAND COVER FROM AVHRR, 8-KM, 1984 (DEFRIES ET AL.)

Entry ID: lba_avhrr_8km

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Summary

Abstract: This data set is a subset of an 8-km global land cover product (DeFries et al. 1998). This subset was created for the study area of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) in South America (i.e., latitude 10° N to 25° S, longitude 30° to 85° W). The data are in ASCII GRID file format.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 at the University of Maryland employed the NASA/NOAA Pathfinder AVHRR Land (PAL) data set with a spatial resolution of 8 km. The PAL data set has a length of record of 14 years (1981-1994), providing the ability to test the stability of classification algorithms. Furthermore, the 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's aim was 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 global land cover product (Defries et al. 1998) 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 University of Maryland's Global Land Cover Facility (GLCF) Web site (http://glcf.umiacs.umd.edu/data/landcover/index.shtml). Additional information and references on this data set can be found at the GLCF Web site, as well as at the LGRSS Web site (http://www.geog.umd.edu/LGRSS/intro.html). More information can be found at ftp://daac.ornl.gov/data/lba/land_use_land_cover_change/comp/land_c... was a cooperative international research initiative led by Brazil. NASA was a lead sponsor for several experiments. LBA was designed to create the new knowledge needed to understand the climatological, ecological, biogeochemical, and hydrological functioning of Amazonia; the impact of land use change on these functions; and the interactions between Amazonia and the Earth system.

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Description: LBA REGIONAL LAND COVER FROM AVHRR, 8-KM, 1984 (DEFRIES ET AL.)

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 10.0

S: -25.0

E: -30.0

W: -85.0

Data Set Citation

Dataset Originator/Creator: DEFRIES, R.S.HANSEN, M.SOHLBERG, R.TOWNSHEND, J.R.G.

Dataset Title: LBA REGIONAL LAND COVER FROM AVHRR, 8-KM, 1984 (DEFRIES ET AL.)

Dataset Release Date: 2003

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/680

Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=680&term2attribut...

Temporal Coverage

Start Date: 1984-01-01

Stop Date: 1984-12-31

Location Keywords

CONTINENT > SOUTH AMERICA > AMAZONIA

Science Keywords

BIOSPHERE > TERRESTRIAL ECOSYSTEMS > AGRICULTURAL LANDS

BIOSPHERE > VEGETATION > VEGETATION COVER

LAND SURFACE > LAND USE/LAND COVER > LAND COVER

ISO Topic Category

FARMING

BIOTA

GEOSCIENTIFIC INFORMATION

IMAGERY/BASE MAPS/EARTH COVER

Platform

NOAA-10 > National Oceanic & Atmospheric Administration-10

NOAA-11 > National Oceanic & Atmospheric Administration-11

NOAA-9 > National Oceanic & Atmospheric Administration-9

Instrument

AVHRR > Advanced Very High Resolution Radiometer

Project

EOSDIS > Earth Observing System Data Information System

LBA > Large Scale Biosphere-Atmosphere Experiment in Amazonia

ESIP > Earth Science Information Partners Program

CWIC > CEOS WGISS Integrated Catalog

Ancillary Keywords

LBA

GLCF

Data Set Progress

COMPLETE

Data Center

THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC)

Data Center URL: http://daac.ornl.gov/
Dataset ID: 680

Data Center Personnel
Name: ORNL DAAC USER SERVICES OFFICE Phone: (865) 574-7447 Email: uso at daac.ornl.gov Contact Address: ORNL DAAC User Services Office Oak Ridge National Laboratory City: Oak Ridge Province or State: TN Postal Code: 37831-6407 Country: USA