The ORNL DAAC is now distributing the final data products from the 6-year Net Primary Productivity (NPP) project, which documented field measurements of biomass dynamics and estimated NPP for terrestrial sites worldwide. The project produced 61 site-specific data sets and 8 multi-site or multi-biome data sets. In addition, associated global products synthesizing data from various sources are available.
Additions to the ORNL DAAC holdings in recent months include three multi-biome data sets. One ("Chinese Forests Data") characterizes NPP in major forest types in China, including data from 690 study sites in six major forest biomes. Another ("PIK Data for Northern Eurasia") characterizes natural and managed ecosystems in various zones of the former U.S.S.R. The other ("VAST Calibration Data") contains data from 33 sites in Australia, with over 550 other records of biomass, litterfall, and soil carbon study sites throughout the Australian continent.
The global data products include the following:
- NPP estimates for 5164 half-degree grid cells (from the University of Maryland)
- NPP estimates for 2525 sites (through the Global Primary Production Data Initiative)
- model driver and validation data (for the Ecosystem Model-Data Intercomparison workshops)
- consistent NPP estimates for crops, tropical forests, boreal forests, and grasslands (through the National Center for Ecological Analysis and Synthesis).
For more information about NPP data sets and associated global data products, visit the NPP project page maintained by the ORNL DAAC.