The ORNL DAAC Net Primary Production (NPP) data set collection contains field measurements of biomass and estimated NPP for terrestrial study sites worldwide, compiled from published literature and other extant data sources. Compilation of these data sets was sponsored by the Terrestrial Ecology Program of NASA's Office of Earth Science.
The NPP data set collection contains 82 data sets for 65 intensive study sites broken down by biome as follows:
- 9 Boreal Forest Sites
- 35 Grassland Sites
- 3 Temperate Forest Sites
- 18 Tropical Forest Sites
- 2 Tundra Sites
Some combination of above-ground annual peak live biomass data and/or seasonal biomass dynamics data is available for all sites. Many sites also have data on below-ground biomass and/or turnover. A number of previously compiled multi-site, multi-biome data sets of georeferenced NPP estimates are also provided in this data set collection.
The ORNL DAAC NPP Data archive includes data products from the following categories:
- Alaskan Tundra
- Boreal Forests
- Temperate Forests
- Tropical Forests
- US Croplands
The following NPP resources are maintained by the ORNL DAAC:
Get NPP Data
Find and order data sets:
- See list of data sets and download data
- Browse NPP Data Holdings by selected attributes
- Retrieve NPP data by FTP browse
- Search NPP Data Set data (Mercury)
Click on the image below to watch a 47-second video.
This false-color map represents the Earth's "carbon metabolism" -- the rate at which plants absorb carbon out of the atmosphere. The map shows the global annual average of the net productivity of vegetation on land and in the ocean during 2001-2002. The yellow and red areas show the highest rates, ranging from 2 to 3 kilograms of carbon taken in per square meter per year. The green, blue, and purple shades show progressively lower productivity.
Related NPP Links
Information related to the NPP Project can be found at the following link: