The Global Precipitation Measurement (GPM) mission Ground Validation campaign used a variety of methods for validation of GPM satellite constellation measurements prior to and after launch of the GPM Core Satellite, which launched on February 27, 2014. The instrument validation effort included numerous GPM-specific and joint agency/international external field campaigns, using state of the art cloud and precipitation observational infrastructure (polarimetric radars, profilers, rain gauges, and disdrometers). Surface rainfall was measured by very dense rain gauge and disdrometer networks at various field campaign sites. These field campaigns accounted for the majority of the effort and resources expended by GPM GV. More information about the GPM mission is available at https://pmm.nasa.gov/GPM/.

The Olympic Mountains Experiment (OLYMPEX) was one of the GPM Ground Validation field campaigns held in the Pacific Northwest during the winter 2015-2016. The goal of OLYMPEX was to validate rain and snow measurements in midlatitude frontal systems as they move from ocean to coast to mountains and to determine how remotely sensed measurements of precipitation by GPM can be applied to a range of hydrologic, weather forecasting, and climate data. The OLYMPEX campaign consisted of a wide variety of ground instrumentation, several radars, and airborne instrumentation monitoring oceanic storm systems as they approached and traversed the Peninsula and the Olympic Mountains. The OLYMPEX campaign was part of the development, evaluation, and improvement of GPM remote sensing precipitation algorithms. More information is available from the NASA GPM Ground Validation web site https://pmm.nasa.gov/olympex and the University of Washington OLYMPEX web site http://olympex.atmos.washington.edu/.

To cite the entire collection, please use the following:

Petersen, W., R. Houze, and L. McCurdie. 2018. GPM Ground Validation OLYMPEX Field Campaign Data Collection [indicate subset used]. Data set available online http://ghrc.nsstc.nasa.gov/ from the NASA EOSDIS Global Hydrology Resource Center Distributed Active Archive Center Huntsville, Alabama, U.S.A. doi:http://dx.doi.org/10.5067/GPMGV/OLYMPEX/DATA101

For more information on GHRC DAAC citations, see these Instructions for citing GHRC data.

General Characteristics

Collections: GPM Ground Validation Products
Projects: NASA GPM Ground Validation / OLYMPEX
Platforms: Ground Stations, NASA ER-2, NASA DC-8, UND Citation II
Sensors/Instruments: COSMIR, APR-3, CPL, AMPR, HIWRAP, CRS, HVPS-3, parsivel, 2DVD, D3R, DOW, MRR, NPOL, 2DC, 2DS, HVPS3, AVAPS, NEXRAD, APU, Pluvio Precipitation Gauges, CDP, CPI Probes, Met One Rain Gauge Pairs, CoSMIR
Parameters: Radar Reflectivity, particle size distribution, atmospheric pressure, atmospheric temperature, winds, dewpoint, liquid precipitation, liquid water equivalent, brightness temperature, microwave radiometer, aerosols, layer optical depth, clouds, Doppler radar, Doppler velocity, Radial velocity, radar backscatter, differential reflectivity
Processing level: 4>
Formats: ASCII, ASCII-IWG1, XML, ASCII-eol, PNG, netCDF-4, ASCII-tsv, HDF-5, ASCII-csv, Binary, HDF-4, netCDF-3, netCDF-4/CF, UF

Coverage

[coverage map]
Red dots or areas indicate coverage range.

 

Location: Olympic Region, Washington, USA
Spatial resolution: point to 250 km
North boundary: 48.5°
West boundary: -126°
East boundary: -122°
South boundary: 46°
Temporal resolution: <sec - daily
Start date: 2015-11-01
Stop date: 2016-05-01

Member Datasets and More Information

GPM Ground Validation Snow Depth Monitoring System OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/SNOWTUBE/DATA101

GPM Ground Validation Pluvio Precipitation Gauges OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/PLUVIO/DATA301

GPM Ground Validation Met One Rain Gauge Pairs OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/GAUGES/DATA201

GPM Ground Validation Two-Dimensional Video Disdrometer (2DVD) OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/2DVD/DATA/301

GPM Ground Validation Autonomous Parsivel Unit (APU) OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/APU/DATA301

GPM Ground Validation NASA S-Band Dual Polarimetric (NPOL) Doppler Radar OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/NPOL/DATA301

GPM Ground Validation Doppler on Wheels (DOW) OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/DOW/DATA101

GPM Ground Validation Dual-frequency Dual-polarized Doppler Radar (D3R) OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/D3R/DATA101

GPM Ground Validation Advanced Microwave Precipitation Radiometer (AMPR) OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/AMPR/DATA101

GPM Ground Validation High Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP) OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/HIWRAP/DATA101

GPM Ground Validation Micro Rain Radar (MRR) OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/MRR/DATA201

GPM Ground Validation Conical Scanning Millimeter-wave Imaging Radiometer (CoSMIR) OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/COSMIR/DATA301

GPM Ground Validation Advanced Vertical Atmospheric Profiling System (AVAPS) OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/AVAPS/DATA101

GPM Ground Validation Airborne Precipitation Radar 3rd Generation (APR-3) OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/APR3/DATA201

GPM Ground Validation Cloud Physics LiDAR (CPL) OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/CPL/DATA101

GPM Ground Validation UND Citation Cloud Microphysics OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/MULTIPLE/DATA201

GPM Ground Validation NCAR Particle Probes OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/PROBES/DATA201

GPM Ground Validation Cloud Radar System (CRS) OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/CRS/DATA101

GPM Ground Validation Navigation Data DC-8 OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/NAV/DATA301

GPM Ground Validation UND Citation Navigation Data OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/NAV/DATA101

GPM Ground Validation NASA ER-2 Navigation Data OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/NAV/DATA201

GPM Ground Validation KATX NEXRAD OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/NEXRAD/DATA101

GPM Ground Validation KLGX NEXRAD OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/NEXRAD/DATA201

GPM Ground Validation KRTX NEXRAD OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/NEXRAD/DATA301

GPM Ground Validation Daily Precipitation OLYMPEX
http://dx.doi.org/10.5067/GPMGV/OLYMPEX/MULTIPLE/DATA301

Documentation

PI Documentation: https://doi.org/10.1175/BAMS-D-16-0182.1
BAMS 2017 Publication: The Olympic Mountains Experiment (OLYMPEX), Houze et al.
DOI: http://dx.doi.org/10.5067/GPMGV/OLYMPEX/DATA101
Digital Object Identifier
CITING DATA: https://ghrc.nsstc.nasa.gov/home/about-ghrc/citing-ghrc-daac-data 
Instructions for citing GHRC data.
   

 

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