LBA-ECO CD-10: CO2 and H2O Eddy Flux Profiles from Tapajos Forest Tower

The dataset contains time-series measurements from a tower in the Tapajos National Forest. Eddy fluxes of CO2 and H2O are measured at two heights (58m and 47m) using Licor 6262 analyzers and CSAT3 sonic anemometers, with a third analyzer capturing vertical concentration profiles and integrated canopy storage across eight levels. The data also include meteorological variables like air temperature, PAR, and net radiation, with instrument calibration performed using span gases at 325, 400, and 475 ppm.

Use Cases

• Quantifying net ecosystem exchange (NEE) of CO2 based on eddy covariance flux measurements.
• Analyzing vertical concentration gradients of CO2 and H2O within the forest canopy from the profile data.
• Modeling canopy storage effects on flux calculations using the integrated storage measurements.
• Correlating carbon and water fluxes with concurrent meteorological conditions like PAR and net radiation.
• Validating and calibrating ecosystem or land-surface models for tropical forests.

Strengths

• Provides multi-level flux and profile measurements from a well-instrumented tower, suggesting detailed vertical structure.
• Instruments follow a rigorous calibration protocol with automatic zeroing and span gas checks every 2 to 6 hours.
• Cross-platform presence on Data.gov and NASA EarthData indicates recognized scientific importance.

Limitations

• Critical metadata conflicts exist: the 'last updated' date differs significantly between sources (2006 vs. 2026).
• Column names and exact data structure are unknown, hindering immediate analysis.
• The dataset size, row count, and specific temporal coverage are not provided.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Field measurements using tower-mounted closed-path Licor 6262 gas analyzers and Campbell CSAT3 sonic anemometers.

Time Range

null

Freshness

The most recent update date reported is 2026-04-10, but this conflicts with a 2006 date from another source.

Geography

Tapajos National Forest, Brazil (km 67 Tower Site).