North American Carbon Flux Parameters from 65 Tower Sites
Updated 1mo ago
6filesBIN
Available on 2 platforms
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Description
NASA's NACP VPRM dataset provides optimized net ecosystem exchange parameters for 65 flux tower sites across North America. It includes parameters like basal respiration rate (beta), temperature sensitivity (alpha), and light-use efficiency (lambda) derived from eddy covariance, temperature, PAR, and satellite data. The data cover the conterminous USA, Alaska, and Canada from 2000 to 2006, aggregated by site, plant functional type, and temporal scale.
Use Cases
Calibrating and validating vegetation photosynthesis and respiration models (VPRM) using site-specific parameters like alpha, beta, lambda, and PAR_0.
Analyzing spatial and temporal patterns of carbon exchange by aggregating data across 65 sites or by plant functional types (PFTs).
Investigating the relationship between environmental drivers (temperature, PAR) and ecosystem carbon fluxes using monthly and annual parameter summaries.
Comparing optimized model parameters across different North American ecosystems from 2000 to 2006.
Strengths
Parameters are optimized using observed data from 65 distinct flux tower sites, providing ground-truthed estimates.
Data integration combines eddy covariance measurements with local meteorological data and satellite-derived phenology and moisture.
Provides multiple aggregation levels: by individual site, by plant functional type (PFT), and across all sites for analysis flexibility.
Cross-platform presence on Data.gov and NASA EarthData indicates recognized importance and institutional backing.
Limitations
Critical metadata conflicts exist: the last update date is listed as 2026-03 12 on Data.gov but 2007-12-31 on NASA EarthData, creating uncertainty about data currency.
Specific row counts, file sizes, and complete column names are not provided by any source, limiting precise assessment of dataset scale and structure.
The license is specified only as 'other-license-specified' on Data.gov, requiring users to investigate terms before use.
Provenance
Source
National Aeronautics and Space Administration (NASA)
Collection Method
Parameters optimized using observed eddy covariance data from 65 flux towers, combined with local temperature, photosynthetically active radiation (PAR), and satellite-derived phenology and moisture.
Time Range
2000 to 2006
Freshness
2026-03-12 23:33:42.724668
Geography
Conterminous USA, Alaska, and Canada
License is listed as 'other-license-specified'; users must review the specific terms. File formats include less common types like BIN and ISO alongside ZIP, PDF, and PNG.