Amazon Forest Respiration and Carbon Flux Measurements

Measurements of leaf, wood, and soil respiration from a Central Amazon terra firme forest over a one-year period. The dataset estimates average total ecosystem respiration and compares autotrophic respiration with net primary production to calculate carbon use efficiency. It was produced by ORNL_CLOUD, with the most recent metadata update listed as 2026-03 13.

Use Cases

• Analyzing the relationship between soil moisture and soil respiration rates.
• Comparing autotrophic and heterotrophic respiration components to estimate ecosystem carbon use efficiency.
• Modeling how seasonal and daily precipitation changes affect above-canopy carbon flux (F-ac).
• Investigating the role of friction velocity (u*) in nighttime flux variability.

Strengths

• Provides measured flux data for three distinct respiratory sources (leaf, wood, soil) over a 1-year period.
• Includes derived estimates for total ecosystem respiration (7.8 μmol m⁻² s⁻¹) and carbon use efficiency (~30%).
• Cross-platform presence on NASA EarthData and Data.gov signals recognized importance and curation.

Limitations

• Key structural details like row count, column names, and dataset size are unknown across all sources.
• Conflicting last updated dates exist: one source lists 2001-08-15, while others list 2026-03-13.
• The license is ambiguously noted as 'other-license-specified', requiring further investigation for reuse.

Provenance

Source

ORNL_CLOUD

Collection Method

Field measurements of respiration fluxes and environmental factors, scaled to the ecosystem and combined with eddy covariance data.

Time Range

1 year

Freshness

2026-03-13 01:03:45.071793

Geography

Central Amazon terra firme forest, Manaus, Brazil