Soil CO2 Flux in Brazilian Old-Growth Forests: 2001-2003

Eddy covariance measurements of net ecosystem carbon dioxide exchange over three years at two old-growth forest sites near Santarem, Brazil. The dataset reveals a seasonal pattern opposite to model predictions, with an average carbon loss of 1.3 Mg C ha⁻¹ yr⁻¹. It was produced by ORNL_CLOUD and is available on NASA EarthData and Data.gov.

Use Cases

• Analyzing seasonal patterns of soil CO2 flux and net carbon exchange in tropical forests.
• Validating or challenging terrestrial biosphere model predictions for carbon sequestration.
• Investigating the long-term carbon balance effects of recent disturbance events in old-growth ecosystems.
• Studying the relationship between soil respiration, atmospheric temperature, and land surface carbon dynamics.

Strengths

• Data collection spans a 3-year time series (2001-2003), providing multi-annual context.
• Measurements combine eddy covariance methods with confirming biometric observations.
• Findings challenge established model predictions, indicating scientific importance.

Limitations

• Specific column names and row counts are not provided by any source, limiting structural clarity.
• Conflicting last update dates exist between sources (2003-05 vs. 2026-03), creating uncertainty about metadata freshness.

Provenance

Source

ORNL_CLOUD

Collection Method

Measured by eddy covariance and automated chamber methods.

Time Range

2001 to 2003

Freshness

2026-03-13 00:59:19.105101

Geography

Two old-growth forest sites near Santarem, Para, Brazil.