LBA-ECO TG-08: Soil Gas Fluxes from Wetted Forest and Pasture Soils

August 1998 measurements from Fazenda Nova Vida, Rondonia, Brazil, capture soil gas fluxes of nitric oxide (NO), nitrous oxide (N2O), and carbon dioxide (CO2) in response to simulated rain. The dataset includes soil moisture, temperature, and ammonium and nitrate pools from mature forests and pastures aged 11 and 26 years. It quantifies short-term emission pulses from soil wetting after prolonged dryness during the Amazon dry season.

Use Cases

• Modeling short-term soil greenhouse gas emission pulses based on soil moisture and temperature changes.
• Comparing nitrogen oxide flux contributions from forest versus pasture soils of different ages.
• Quantifying the impact of simulated rain events on dry season and annual trace gas budgets.
• Analyzing correlations between soil ammonium/nitrate pools and subsequent N2O/NO fluxes.

Strengths

• Data is from a controlled field experiment with a specific temporal focus (August 1998 dry season).
• Covers multiple land-use types (mature forest, 11-year-old pasture, 26-year-old pasture) for comparative analysis.
• Measures a suite of interrelated variables: three soil gas fluxes, moisture, temperature, and two soil nutrient pools.

Limitations

• Metadata completeness is low: column names, row counts, and file size are unknown across all sources.
• Conflicting freshness: one platform shows a last update of 2026-04-10, while another shows 1999-08 23, suggesting potential metadata errors.
• Spatial and temporal scale is limited to one location and a single month in 1998.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Field measurements from a simulated rain event experiment.

Time Range

August 1998

Freshness

1999-08-23 23:59:59.999000

Geography

Fazenda Nova Vida, Rondonia, Brazilian Amazon