BigFoot NPP Surfaces for Nine Biome Sites Across the Americas

Net Primary Production (NPP) surfaces were generated for nine Earth Observing System Land Validation Sites across the Americas from 2000 to 2004. The dataset, produced by NASA's BigFoot project, models NPP at a 25-meter resolution for 7x7 km areas using the Biome-BGC process model calibrated with field and tower data. It specifically archives data for Northern Old Black Spruce and Harvard Forest sites from 2001.

Use Cases

• Validating MODIS-derived NPP and GPP products using high-resolution model outputs.
• Studying carbon flux and ecosystem productivity across nine distinct biomes, including Arctic tundra and tropical evergreen forest.
• Calibrating and testing spatial ecosystem process models like Biome-BGC with tower and field measurements.
• Analyzing spatial patterns of Net Primary Production within 7x7 km research sites at 25-meter resolution.

Strengths

• Model outputs are calibrated with field-measured NPP and validated using tower-derived GPP estimates.
• Provides high-resolution (25m) NPP data for a 7x7 km extent at each of nine sites across diverse biomes.
• Combines multiple data sources: Landsat ETM+ land cover/LAI, tower meteorology, and site-level ecophysical parameters.

Limitations

• Specific row/column counts and file sizes are not provided across the platforms.
• The temporal coverage is limited, with archived data specifically noted for only two sites in 2001.
• There is a conflict in the 'last updated' date between platforms (2004 vs. 2026), suggesting potential metadata inconsistency.

Provenance

Source

National Aeronautics and Space Administration (NASA), BigFoot Project.

Collection Method

NPP surfaces produced by a spatial version of the Biome-BGC ecosystem process model, using Landsat ETM+ data, tower meteorology, and site parameters.

Time Range

2000 to 2004

Freshness

2026-03-13 10:27:39.087112

Geography

Nine sites located from Alaska to Brazil, representing Arctic tundra, boreal forest, temperate cropland/grassland/forest, desert grassland/shrubland, and tropical evergreen broadleaf forest.