GPM Ground Validation Duke Soil Moisture IPHEx Field Campaign

This dataset contains ground validation measurements for soil moisture and related properties collected during the Integrated Precipitation and Hydrology Experiment (IPHEx) in North Carolina. The Global Hydrology Resource Center Distributed Active Archive Center (GHRC DAAC) compiled data from multiple instruments including Theta Probes, Infrared Thermometers, soil core samplers, and GPS. Data collection spanned from February 27, 2014, through October 17, 2014.

Use Cases

• Validating satellite-derived soil moisture estimates from the GPM mission using concurrent ground measurements of soil moisture and temperature.
• Analyzing the relationship between soil bulk density, surface roughness, and soil moisture content across different North Carolina landscapes.
• Calibrating models for soil hydrology by integrating multi-instrument data from probes, thermometers, and core samplers collected during a focused field experiment.

Strengths

• Data originates from a dedicated, multi-month field campaign (IPHEx) designed for ground validation.
• Measurements integrate multiple instrument types, including Theta Probes, Infrared Thermometers, and soil core samplers, for cross-validation.
• The dataset's cross-platform presence on NASA Earthdata and Data.gov signals its recognized importance for satellite validation.

Limitations

• Specific row counts, file sizes, and a complete column list are not provided by any source.
• Sources conflict on the last updated date, reporting both 2014-10-17 and 2026-03 13.
• Data is available in multiple disparate formats (shapefiles, Excel, Word, ASCII), which may complicate unified analysis.

Provenance

Source

Global Hydrology Resource Center Distributed Active Archive Center (GHRC DAAC)

Collection Method

Field measurements gathered during the Integrated Precipitation and Hydrology Experiment (IPHEx) using Theta Probes, Infrared Thermometers, 200-A Soil Core Samplers, GPS, Soil Thermometers, and CS6161 Water Reflectometers.

Time Range

2014-02-27 to 2014-10-17

Freshness

2026-03-13 02:24:29.595353

Geography

Southern Appalachians, Piedmont, and Coastal Plain regions of North Carolina