SiB4 Modeled Global Daily Carbon Fluxes and Pools by Plant Type

SiB4 Modeled Global 0.5-Degree Daily Carbon Fluxes and Pools, 2000-2018 provides 19 years of daily global land surface data at a 0.5-degree spatial resolution. The dataset, produced by NASA's Simple Biosphere Model Version 4.2, partitions output into 15 distinct plant functional types per grid cell. It includes variables for carbon, carbonyl sulfide, and energy fluxes, solar-induced fluorescence, carbon pools, soil moisture, and temperature.

Use Cases

• Validating satellite-derived estimates of gross primary production (GPP) using modeled carbon flux columns.
• Analyzing seasonal phenology and carbon allocation dynamics across 15 different plant functional types (PFTs).
• Studying global soil moisture and temperature trends in the top three soil layers from 2000 to 2018.
• Investigating the relationship between solar-induced fluorescence and carbon assimilation in different biomes.
• Assessing plant-available water and environmental potentials that scale photosynthesis across heterogeneous land cover.

Strengths

• Data is generated by the mechanistic SiB4 model, which integrates dynamic carbon allocation and cascading carbon pools.
• Provides 19 consecutive years (2000-2018) of daily global coverage at a consistent 0.5-degree resolution.
• Output is partitioned for 15 distinct plant functional types within each grid cell, allowing for detailed biome analysis.
• Includes a wide range of validated variables, from carbon fluxes to soil moisture and solar-induced fluorescence.

Limitations

• The dataset is model output, not direct observational measurements, which may contain systematic biases.
• Conflicting 'last updated' metadata exists between platforms (2018-12 vs. 2026-03), suggesting potential version or metadata issues.
• Specific row counts, file sizes, and a complete column list are not provided by any source, limiting precise technical assessment.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Generated by the mechanistic Simple Biosphere Model, Version 4.2 (SiB4).

Time Range

2000 through 2018

Freshness

2026-03-12 21:28:29.855790

Geography

Global at 0.5-degree spatial resolution