OLYMPEX Precipitation Gauge Data from Three Pacific Northwest Sites

NASA's GPM Ground Validation Pluvio Precipitation Gauges OLYMPEX dataset provides high-resolution, one-minute precipitation measurements from three sites on the Olympic Peninsula. Data includes precipitation rate, accumulation, and event timing, collected from October 31, 2015, to January 31, 2016, using OTT Hydromet Pluvio 400 weighing bucket gauges. This dataset supports the validation of satellite precipitation estimates from the Global Precipitation Measurement mission.

Use Cases

• Validating satellite precipitation retrievals from GPM by comparing with high-temporal-resolution ground truth measurements.
• Analyzing precipitation event structure, including start/end times and accumulation rates, at three distinct mountain sites.
• Studying the influence of topography on precipitation distribution using data from Neilton Point, Wynoochee Trailer, and Upper Quinault sites.
• Calibrating or testing hydrological models with precise, one-minute liquid and solid precipitation rate inputs.

Strengths

• Data provides high temporal resolution with one-minute precipitation measurements.
• Collection was part of a coordinated field campaign (OLYMPEX) designed for satellite validation.
• Measurements come from three specific geographic sites, allowing for spatial analysis of precipitation.

Limitations

• Key details like row count, file size, and exact column names are not provided by any source.
• Sources conflict on the last update date, with one reporting 2016-01 31 and another reporting 2026-03-13.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Data collected using OTT Hydromet Pluvio 400 weighing bucket gauges at three ground sites.

Time Range

October 31, 2015 to January 31, 2016

Freshness

2026-03-13 02:00:44.783825

Geography

Olympic Peninsula, Pacific Northwest, United States (sites: Neilton Point, Wynoochee Trailer, Upper Quinault Enchanted Valley)