CO Concentrations from Tapajos Forest Tower (2001-2003)

LBA-ECO CD-10 CO Concentrations at km 67 Tower Site, Tapajos National Forest provides half-hourly average carbon monoxide mixing ratios measured above an old-growth upland forest canopy in Brazil. Data collection occurred from April 18, 2001, to August 29, 2003, using a modified TEI 48CTL instrument with frequent zeroing and span checks. The dataset is associated with the ORNL_CLOUD organization and is part of the larger LBA-ECO project.

Use Cases

• Analyzing diurnal and seasonal cycles of CO mixing ratios in a primary Amazonian forest.
• Correlating CO concentrations with associated CO2 and water vapor flux data from the same tower site.
• Studying the impact of canopy-level processes on atmospheric carbon monoxide levels.
• Validating regional atmospheric chemistry and transport models with in-situ tropical forest measurements.
• Investigating instrument performance and calibration stability for long-term trace gas monitoring.

Strengths

• Data collection spans over two years, from April 2001 to August 2003, providing a substantial time series.
• Instrument calibration was performed four times daily using gases at 100 and 500 ppb, and the sensor was frequently zeroed, indicating a controlled measurement protocol.
• The dataset's presence on multiple platforms (NASA Earthdata and Data.gov) signals its importance and use in the scientific community.

Limitations

• The exact row count, file size, and complete column schema are unknown across all sources.
• There is a conflict in the 'last updated' metadata: one source lists 2003-08-29, while others list 2026-03 13, creating uncertainty about recent maintenance.

Provenance

Source

ORNL_CLOUD organization, LBA-ECO project.

Collection Method

CO concentrations measured in air drawn from above a 64-meter canopy tower using a modified TEI 48CTL instrument.

Time Range

2001-04-18 to 2003-08-29

Freshness

2026-03-13 01:17:25.621436

Geography

Para Western (Santarem) - km 67, Primary Forest Tower Site, Tapajos National Forest, north central Brazil.