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


Data setNACP VPRM NEE Parameters Optimized to North American Flux Tower Sites, 2000-2006
Release date2016-11-17
ProjectNorth American Carbon Program (NACP)
Time period2000-01-01 to 2007-12-31

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CountEarliest DateLatest DateData Usage
Downloads22017-03-162017-04-2324 total files downloaded


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.

Data set documentation


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Crosscite Citation Formatter
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.

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Data Files

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Data File (Granule)File SizeDates
VPRM_parameters_all_sites_all_data.csv 191 B 2000-01-01 to 2007-12-31
VPRM_parameters_all_sites_annual_data.csv 634 B 2000-01-01 to 2007-12-31
VPRM_parameters_all_sites_monthly_data.csv 5.5KB 2000-01-01 to 2006-12-31
VPRM_parameters_individual_sites_all_data.csv 4.4KB 2000-01-01 to 2004-12-31
VPRM_parameters_individual_sites_annual_data.csv 19.0KB 2000-01-01 to 2006-12-31
VPRM_parameters_individual_sites_monthly_data.csv 222.4KB 2000-01-01 to 2006-12-31
VPRM_parameters_pft_sites_all_data.csv 677 B 2000-01-01 to 2000-12-31
VPRM_parameters_pft_sites_annual_data.csv 3.9KB 2000-01-01 to 2006-12-31
VPRM_parameters_pft_sites_monthly_data.csv 44.6KB 2000-01-01 to 2006-12-31

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  • VPRM_North_America_Parameters.pdf

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