LBA-ECO Amazon Forest Carbon Flux and Meteorological Data

LBA-ECO CD-04 data from the km 83 tower site in Tapajos National Forest, Para, Brazil, provides measurements of net ecosystem production using biometric and micrometeorological approaches. The dataset includes eddy covariance measurements of CO2 exchange and meteorological variables from July 2000 to July 2001, with biometric inventory data spanning 1984 to 2000. It was produced by the ORNL_CLOUD organization and is hosted on multiple platforms including NASA EarthData and Data.gov.

Use Cases

• Analyzing the relationship between nocturnal net ecosystem exchange (NEE) and friction velocity (u*) to correct carbon flux estimates.
• Comparing carbon sink/source dynamics from biometric inventories (1984-2000) with eddy covariance measurements (2000-2001).
• Studying the sensitivity of annual carbon flux calculations to treatment of calm nights using u* filter thresholds.
• Investigating atmospheric variables like surface temperature, water vapor, solar radiation, and precipitation alongside carbon flux data.

Strengths

• Employs two independent measurement methods (biometric inventory and eddy covariance) for cross-validation of net ecosystem production.
• Provides a detailed analysis of flux calculation sensitivity, showing a change of over 4 Mg C ha-1 yr-1 based on u* filter treatment.
• Contains meteorological and flux data over a defined one-year eddy covariance period (July 2000 to July 2001) with longer-term biometric context.

Limitations

• Conflicting last updated dates exist across platforms (2004-03-12 and 2026-03-13), creating uncertainty about data currency.
• Specific column names and row counts are not provided in any source description, limiting precise structural understanding.
• The study concludes annual carbon balance from eddy covariance is less certain for tropical forests than temperate ones due to high calm-night sensitivity.

Provenance

Source

ORNL_CLOUD

Collection Method

Combined biometric forest inventories and eddy covariance measurements using open- and closed-path gas analyzers.

Time Range

1984 to 2001

Freshness

2026-03-13 01:17:43.110550

Geography

km 83 Tower Site, Tapajos National Forest, Para, Brazil