Two-Dimensional Video Disdrometer Data for Satellite Precipitation Validation

April 23 to June 17, 2014 data from the Integrated Precipitation and Hydrology Experiment (IPHEx) in North Carolina. This NASA dataset contains daily ASCII files with measurements of individual hydrometeors from five ground sites. It was collected to evaluate satellite precipitation accuracy and support regional hydrology models.

Use Cases

• Validating GPM satellite precipitation estimates using ground-based raindrop size distribution measurements.
• Analyzing temporal and spatial variations in particle concentration across five instrumented sites.
• Studying hydrometeor characteristics like fall velocity and shape for microphysical model input.
• Calibrating or improving hydrological models for the southeastern United States with detailed precipitation data.

Strengths

• Data provides detailed, site-specific measurements of individual hydrometeors, including size and concentration.
• Covers a focused 56-day campaign across five locations for spatial analysis.
• Dataset is hosted on multiple authoritative platforms (Data.gov, NASA Earthdata), indicating recognized importance.

Limitations

• Exact column names and row counts are not specified in any source description.
• Sources conflict on the 'last updated' metadata (2026 vs 2014), creating uncertainty about maintenance.
• Data is limited to a specific two-month period in 2014, restricting analysis of long-term trends.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Collected by Two-Dimensional Video Disdrometer (2DVD) instruments at five ground sites during the IPHEx field campaign.

Time Range

April 23, 2014 to June 17, 2014

Freshness

2026-03-13 01:58:58.415342

Geography

North Carolina, United States