BigFoot Field Data for North American Sites, 1999-2003

Description

The BigFoot project gathered field data for selected EOS Land Validation Sites in North America from 1999 to 2003. Data collected and derived for varying intervals at the BigFoot sites and archived with this data set include FPAR, nitrogen content, allometry equations, root biomass, LAI, tree biomass, soil respiration, NPP, landcover images, and vegetation inventories.Each site is representative of one or two distinct biomes, including the Arctic tundra; boreal evergreen needleleaf forest; temperate cropland, grassland, and deciduous broadleaf forest; desert grassland and shrubland. The project collected multi-year, in situ measurements of ecosystem structure and functional characteristics related to the terrestrial carbon cycle at the sites listed in Table 1. Companion files include documentation of measurement data, site and plot locations (Figure 2), and plot photographs for the SEVI and TUND sites (Figure 3).BigFoot Project Background: Reflectance data from MODIS, the Moderate Resolution Imaging Spectrometer onboard NASA's Earth Observing System (EOS) satellites Terra and Aqua ( http://landval.gsfc.nasa.gov/MODIS/index.php ), was used to produce several science products including land cover, leaf area index (LAI), gross primary production (GPP), 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 six 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 1-km MODIS pixels) surrounding the CO2 flux towers located at six of the nine BigFoot sites. The sampling design allowed the Project to examine scales and spatial patterns 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.

Resources

Name Format Description Link
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/868
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/daacdata/bigfoot_val/Field_Measurements/data/
57 Collection bundle https://data.ornldaac.earthdata.nasa.gov/protected/bundle/Field_Measurements_868.zip
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/BIGFOOT_VAL/guides/BigFoot_Field_Data.html
33 Data Set Documentation https://data.ornldaac.earthdata.nasa.gov/public/bigfoot_val/Field_Measurements/comp/BigFoot_Field_Data.pdf
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F868
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/bigfoot_val/Field_Measurements/
33 Data Set Documentation https://data.ornldaac.earthdata.nasa.gov/public/bigfoot_val/Field_Measurements/comp/BigFoot_Field_Manual_1999.pdf
33 Data Set Documentation https://data.ornldaac.earthdata.nasa.gov/public/bigfoot_val/Field_Measurements/comp/NOBS_README.pdf
57 Data Set Documentation https://data.ornldaac.earthdata.nasa.gov/public/bigfoot_val/Field_Measurements/comp/sevi_plot_pictures.zip
33 Data Set Documentation https://data.ornldaac.earthdata.nasa.gov/public/bigfoot_val/Field_Measurements/comp/SEVI_README.pdf
57 Data Set Documentation https://data.ornldaac.earthdata.nasa.gov/public/bigfoot_val/Field_Measurements/comp/tund_plot_pictures.zip
33 Data Set Documentation https://data.ornldaac.earthdata.nasa.gov/public/bigfoot_val/Field_Measurements/comp/TUND_README.pdf
34 Browse Image https://daac.ornl.gov/graphics/browse/project/square/bigfoot_logo_square.png
57 Collection bundle https://data.ornldaac.earthdata.nasa.gov/protected/bundle/Field_Measurements_868.zip
33 Data Set Documentation https://data.ornldaac.earthdata.nasa.gov/public/bigfoot_val/Field_Measurements/comp/AGRO_README.pdf
33 Data Set Documentation https://data.ornldaac.earthdata.nasa.gov/public/bigfoot_val/Field_Measurements/comp/HARV_README.pdf
33 Data Set Documentation https://data.ornldaac.earthdata.nasa.gov/public/bigfoot_val/Field_Measurements/comp/KONZ_README.pdf

Tags

  • biosphere
  • vegetation
  • ecological-dynamics
  • earth-science

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