ISLSCP II IGBP NPP: Global Modeled Terrestrial Carbon Uptake

Global land biosphere data provides modeled annual net primary production (NPP) from seventeen different biogeochemistry models. The dataset contains the mean, standard deviation, and coefficient of variation of NPP at 1.0-degree and 0.5-degree spatial resolutions. NPP values represent the net carbon uptake by vegetation after accounting for plant respiration.

Use Cases

• Comparing outputs from 17 different global biogeochemistry models to assess uncertainty in carbon cycle projections.
• Analyzing spatial patterns of terrestrial carbon uptake at 0.5-degree and 1.0-degree resolutions.
• Validating remote sensing or field-based NPP estimates using multi-model ensemble statistics.
• Investigating the relationship between Net Primary Production (NPP) and Net Ecosystem Exchange (NEE) in carbon cycle studies.

Strengths

• Provides a multi-model ensemble from 17 different global biogeochemistry models, enabling uncertainty analysis.
• Includes derived statistical layers (mean, standard deviation, coefficient of variation) for direct use.
• Offers data at two standard spatial resolutions (0.5 and 1.0 degrees) for different analysis scales.

Limitations

• Metadata completeness is low: column names, row counts, and exact file structure are not specified.
• Conflicting 'last updated' dates exist between platforms (1987 vs. 2026), casting doubt on data freshness.
• The dataset contains only NPP values, as some contributing models did not estimate Net Ecosystem Exchange (NEE).

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Output from seventeen different global terrestrial biogeochemistry models.

Time Range

Annual (specific year(s) not provided)

Freshness

2026-04-10 01:55:50.324118

Geography

Global land biosphere