Canopy Photosynthesis and CO2 Flux Measurements from FIFE 1987

Five sites within the FIFE study area provided data collected from July 1 to October 12, 1987. The dataset contains measurements for estimating canopy photosynthetic rates, respiration rates, and bulk stomatal resistance using a LI-COR CO2 gas analyzer and leaf diffusion porometer. It is hosted by ORNL_CLOUD and appears on multiple government data platforms.

Use Cases

• Modeling net ecosystem exchange (NEE) using measured net CO2 flux rates (0.25 to 1.0 mg m^-2 sec^-1).
• Analyzing plant water stress and gas exchange through calculated stomatal resistance values (80 to >1000 sec m^-1).
• Studying seasonal vegetation dynamics by comparing photosynthesis rates across three Intensive Field Campaigns (IFC-2, IFC-3, IFC-4).
• Calibrating leaf-level porometer measurements against canopy-scale chamber estimates for bulk resistance.

Strengths

• Data collection spans a full growing season, covering three distinct Intensive Field Campaigns from July to October 1987.
• Measurements are derived from controlled chamber experiments with a LI-COR CO2 analyzer, providing direct gas exchange rates.
• The dataset includes independent validation via leaf diffusion porometer measurements for selected grass species.

Limitations

• Core metadata conflicts: the last update date is listed as both 1987-10-12 and 2026-03 13, indicating a possible archival re-upload.
• Specific column names, row counts, and file sizes are not provided by any source platform.
• The license is ambiguously listed as 'other-license-specified' without explicit terms.

Provenance

Source

ORNL_CLOUD

Collection Method

Field measurements using a Plexiglas chamber with a LI-COR CO2 gas analyzer and a leaf diffusion porometer.

Time Range

1987-07-01 to 1987-10-12

Freshness

2026-03-13 04:47:22.670449

Geography

Five sites within the FIFE (First ISLSCP Field Experiment) study area.