FIFE: Soil Impedance and Moisture Measurements

Daily measurements of soil dielectric properties were obtained at five locations during the 1987 Intensive Field Campaigns. The dataset compares calculated volumetric water content from impedance probes with traditional gravimetric measurements, revealing the probes provide more consistent time-series data. It characterizes soil moisture distribution in the FIFE study area, capturing diurnal variations missed by other sampling methods.

Use Cases

• Validating satellite-derived soil moisture products using in-situ impedance probe data.
• Analyzing diurnal and temporal soil moisture patterns from time-series measurements.
• Comparing the consistency of impedance probe measurements against traditional gravimetric sampling.
• Studying the electromagnetic response of soils through dielectric constant measurements.

Strengths

• Provides time-series data from five distinct locations, enabling spatial and temporal analysis.
• Includes a direct comparison between impedance probe and gravimetric measurements, supporting method validation.
• Captures small-scale diurnal variations in soil moisture, a detail missed by infrequent sampling schemes.

Limitations

• Metadata completeness is low: specific column names, row counts, and file sizes are not provided on any platform.
• Conflicting last updated dates exist between sources (1989 vs. 2026), creating uncertainty about data currency.
• The dataset's temporal coverage is limited to the 1987 field campaigns.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Daily measurements obtained using soil impedance probes at fixed locations during the FIFE Intensive Field Campaigns.

Time Range

1987

Freshness

2026-04-09 21:55:19.836019

Geography

FIFE (First ISLSCP Field Experiment) study area.