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BIGFOOT LAND COVER SURFACES FOR NORTH AND SOUTH AMERICAN SITES, 2000-2003

Entry ID: bigfoot_landcove

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Summary

Abstract: The BigFoot project gathered data for nine EOS Land Validation Sites located from Alaska to Brazil from 2000 to 2003. Each site is representative of one or two distinct biomes, including the Arctic tundra; boreal evergreen needleleaf forest; temperate cropland, grassland, evergreen needleleaf forest, and deciduous broadleaf forest; desert grassland and shrubland; and tropical evergreen broadleaf ... forest. These surfaces were produced from Landsat ETM+ imagery to explicitly characterize the land cover at the BigFoot Sites to provide validation of the MODIS land cover product. The land cover scheme is consistent with the categories defined by the MOD12 IGBP (http://geography.bu.edu/landcover/userguidelc/index.html) strategy. Each BigFoot land cover product covers approximately a 7 x 7 km extent and consists of the land cover surface image in standard geotiff format, an accompanying text file which provides metadata specific to the image (such as projection, data type, class names, etc), and associated auxiliary and world files. For an in depth discussion of methods used to produce these surfaces, please see references.

Project Background:Reflectance data from MODIS, the Moderate Resolution Imaging Spectrometer onboard NASA's Earth Observing System (EOS) satellite Terra (http://landval.gsfc.nasa.gov/MODIS/index.php), is used to produce several science products including land cover, leaf area index (LAI) and net primary production (NPP). The overall goal of the BigFoot Project was to provide validation of these products. To do this, BigFoot combined ground measurements, additional high resolution remote sensing data, and ecosystem process models at nine flux tower sites representing different biomes to evaluate the effects of the spatial and temporal patterns of ecosystem characteristics on MODIS products. BigFoot characterized up to a 7 x 7 km area (49 MODIS pixels) surrounding the CO2 flux towers located at each of the nine sites. We collected multi-year, in situ measurements of ecosystem structure and functional characteristics related to the terrestrial carbon cycle. Our sampling design allowed us to examine scales and spatial pattern of these properties, the inter-annual variability and validity of MODIS products, and provided for a field-based ecological characterization of the flux tower footprint. BigFoot was funded by NASA's Terrestrial Ecology Program.

Related URL

Link: GET DATA

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 71.27

S: -2.86

E: -54.96

W: -156.61

Data Set Citation

Dataset Originator/Creator: COHEN, W.B.MAIERSPERGER, T.K.PFLUGMACHER, D.

Dataset Title: BIGFOOT LAND COVER SURFACES FOR NORTH AND SOUTH AMERICAN SITES, 2000-2003

Dataset Release Date: 2006

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/748

Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=748&term2attribut...

Temporal Coverage

Start Date: 2000-01-01

Stop Date: 2003-12-31

Location Keywords

CONTINENT > NORTH AMERICA

CONTINENT > SOUTH AMERICA

Science Keywords

LAND SURFACE > LAND USE/LAND COVER > LAND COVER

ISO Topic Category

GEOSCIENTIFIC INFORMATION

IMAGERY/BASE MAPS/EARTH COVER

Platform

LANDSAT-7

Instrument

ETM+ > Enhanced Thematic Mapper Plus

Project

EOSDIS > Earth Observing System Data Information System

ESIP > Earth Science Information Partners Program

BIGFOOT

CWIC > CEOS WGISS Integrated Catalog

Ancillary Keywords

LAI

TUND

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: 748

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