Carbon and Water Fluxes for Old World Bluestem Pasture, 2021-2024

Daily fluxes of net ecosystem CO2 exchange, gross primary production, ecosystem respiration, and evapotranspiration from 2021 to 2024. Data was collected from an Old World Bluestem pasture at the USDA-ARS research center in El Reno, Oklahoma, using an eddy covariance tower. Raw high-frequency data was processed with EddyPro and REddyProc software to compute and gap-fill half-hourly fluxes.

Use Cases

• Modeling grassland carbon budgets based on daily NEE, GPP, and ER fluxes.
• Analyzing seasonal and interannual water use dynamics based on daily evapotranspiration (ET) data.
• Calibrating or validating ecosystem process models using high-temporal-resolution half-hourly flux data.
• Studying the impact of management or climate on pasture productivity based on GPP and respiration metrics.

Strengths

• Data covers a multi-year period from 2021 to 2024, allowing for trend analysis.
• Fluxes are derived from high-frequency eddy covariance measurements, a standard method in micrometeorology.
• Specific sensor models (LI-7500 RS, CSAT3) and processing software (EddyPro 7.0.6, REddyProc) are documented.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific modeling tasks.
• Data is from a single pasture site, which may limit geographic generalizability.

Provenance

Source

United States Department of Agriculture – Agricultural Research Service (USDA-ARS), Oklahoma and Central Plains Agricultural Research Center, El Reno.

Collection Method

Data collected via eddy covariance tower with an open-path infrared gas analyzer and sonic anemometer, processed with EddyPro and REddyProc software.

Time Range

2021 to 2024

Freshness

Last updated 2026-03-13 22:47:17.860160; freshness should be verified.

Geography

A single Old World Bluestem pasture (~63 ha) at El Reno, Oklahoma (35.5467º N, 98.0452º W, 435 masl).