Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
  • Feedback

    • NACP VPRM NEE Parameters Optimized to North American Flux Tower Sites, 2000-2006

    Metadata Updated: December 6, 2023

    This data set provides Vegetation Photosynthesis Respiration Model (VPRM) net ecosystem exchange (NEE) parameter values optimized to 65 flux tower sites across North America. The parameters include the basal rate of ecosystem respiration (beta), the slope of respiration with respect to temperature (alpha), light-use efficiency (LUE) (lambda), and LUE curve half-saturation (PAR_0). Observed eddy covariance data from the 65 tower sites, locally observed temperature and photosynthetically active radiation (PAR) along with satellite-derived phenology and moisture were used as input data to optimize the VPRM parameters for the 65 sites. The data are provided by individual site, plant functional types (PFTs), and all sites together, and as monthly, annual, and all available data. The data are for the conterminous USA, Alaska, and Canada for the period 2000 to 2006.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date May 30, 2023
    Metadata Updated Date December 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Browse Image

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 30, 2023
    Metadata Updated Date December 6, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2517710454-ORNL_CLOUD
    Data First Published 2016-11-17
    Language en-US
    Data Last Modified 2023-06-12
    Category NACP, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.nasa.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Citation Hilton, T.W., K.J. Davis, K. Keller, and N.M. Urban. 2016. NACP VPRM NEE Parameters Optimized to North American Flux Tower Sites, 2000-2006. ORNL DAAC, Oak Ridge, Tennessee, USA. http://dx.doi.org/10.3334/ORNLDAAC/1349
    Graphic Preview Description Browse Image
    Graphic Preview File https://daac.ornl.gov/NACP/guides/VPRM_North_America_Parameters_Fig1.png
    Harvest Object Id 817f74c7-dfec-48f0-9758-8c2bc13e36bb
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1349
    Metadata Type geospatial
    Old Spatial -156.63 28.46 -68.74 71.32
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 1597e54cde3da54bbfc854c5b1fa0078671bcfc5fdc1b405173b4046c3210f56
    Source Schema Version 1.1
    Spatial
    Temporal 2000-01-01T00:00:00Z/2007-12-31T23:59:59Z

    Didn't find what you're looking for? Suggest a dataset here.