GHRC News & Features

10/23/2017 - 11:44

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New NASA OLYMPEX ground validation campaign data for GPM is now available at Global Hydrology Resource Center DAAC. http://dx.doi.org/10.5067/GPMGV/OLYMPEX/NPOL/DATA301

The GPM Ground Validation NASA S-Band Dual Polarimetric (NPOL) Doppler Radar OLYMPEX V2 dataset consists of rain rate, reflectivity, Doppler velocity, and other radar measurements obtained from the NPOL radar during the Global Precipitation Mission (GPM) Olympic Mountains Experiment (OLYMPEX) campaign.

07/18/2017 - 20:49

GPM logoThe GHRC DAAC has published two datasets from the Global Precipitation Measurement (GPM) mission Ground Validation (GV) program.

  • GPM Ground Validation Micro Rain Radar (MRR) OLYMPEX dataset. This dataset contains measured and derived data from MRR instruments placed in four separate locations within the study region. The MRR is a Biral/Metek 24 GHz (K-band) vertically oriented Frequency Modulated Continuous Wave (FM-CW) radar that measures signal backscatter from which Doppler spectra, radar reflectivity, Doppler velocity, drop size distribution, rain rate, liquid water content, and path...
06/13/2017 - 21:43

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The GHRC has published 5 GPM Ground Validation Rain Gauge datasets, 3 from the Olympic Mountains Experiment (OLYMPEX) campaign and 2 from the Integrated Precipitation and Hydrology Experiment (IPHEx). The OLYMPEX datasets contain data gathered during 2015-2016 on the Olympic Peninsula in the Pacific Northwest of the United States. The IPHEx Rain Gauge datasets contain data collected during Spring 2014 from multiple sites of the Southern Appalachian region of North Carolina.

 

*  GPM Ground Validation Autonomous Parsivel Unit (APU) OLYMPEX...

05/30/2017 - 15:48

The GHRC DAAC has published the GPM Ground Validation High Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP) OLYMPEX dataset (http://dx.doi.org/10.5067/GPMGV/OLYMPEX/HIWRAP/DATA101). The Olympic Mountain Experiment (OLYMPEX) was the final Global Precipitation Measurement (GPM) mission Ground Validation field campaign. HIWRAP is a Doppler radar designed to measure tropospheric winds through deriving Doppler profiles from cloud and precipitation volume backscatter. (Li et al. 2016). The winds are generated by combining conical scan mode...

05/30/2017 - 15:42

GHRC DAAC published the TRMM Multi-satellite Precipitation Analysis (TMPA) IPHEx (http://dx.doi.org/10.5067/GPMGV/IPHEX/MULTIPLE/DATA301) dataset. The IPHEx TMPA is a subset of the TMPA 3B42RT gridded precipitation product selected for the time period of the GPM Ground Validation Integrated Precipitation and Hydrology Experiment (IPHEx) held in North Carolina during May 1, 2014 to June 15, 2014. The goal of IPHEx was to characterize warm season orographic precipitation regimes and the relationship between precipitation regimes and hydrologic processes in...

05/30/2017 - 15:29

OLYMPEX logoGHRC DAAC has published the Dual-frequency Dual-polarized Doppler Radar (D3R) OLYMPEX (http://dx.doi.org/10.5067/GPMGV/OLYMPEX/D3R/DATA101) dataset. 
The OLYMPEX D3R dataset contains radar reflectivity and doppler velocity measurements. The D3R was developed by a government-industry-academic consortium with funding from NASA’s Global Precipitation Measurement (GPM) Project and was used in several ground validation projects. D3R is a ground-based radar that operates at the Ku band (13.91 GHz ± 25 MHz) and Ka band (35.56 GHz ± 25 MHz)...

03/22/2017 - 10:18

OLYMPEX logoThe Global Hydrology Resource Center Distributed Active Archive Center (GHRC DAAC) received multiple datasets from the Olympic Mountain Experiment (OLYMPEX), the most recent Global Precipitation Measurement (GPM) mission Ground Validation field campaign. These datasets were delivered in advance of the OLYMPEX science team meeting taking place in Seattle March 21-23. These data are the final, quality controlled datasets to be released to the public. GHRC operations staff posted the new data to the OLYMPEX data portal for access by the science team, and to the GHRC archive. Over the coming months, GHRC science staff...

03/01/2017 - 15:21

Worldview now provides imagery for the near-real time AMSR2 Level-2 Land product generated by the NASA Land, Atmosphere Near real-time Capability for EOS (LANCE) AMSR2 Processing Center at the Global Hydrology Resource Center Distributed Active Archive Center (GHRC DAAC). The most recent imagery can be viewed here:...

01/26/2017 - 09:54

The AMSR Science Investigator-led Processing System (SIPS) at the GHRC DAAC has completed processing of the initial AMSR Level-2 Land product from beginning of the AMSR2 mission to present. This product is generated using the AMSR Unified (AMSR-E and AMSRU) Land algorithms, with Level-1R (resampled) brightness temperatures from the Japan Aerospace Exploration Agency (JAXA) as input. Routine forward processing continues. Data products are delivered from the AMSR SIPS to NSIDC DAAC for archive and distribution. Full resolution imagery are provided to the Global Imagery Browse Services (GIBS).

01/04/2017 - 11:45

Parsivel disdrometers - LPVEx

The Global Hydrology Resource Center has published the GPM Ground Validation NASA EPFL-LTE Parsivel DSD Data from Lausanne, Switzerland (http://dx.doi.org/10.5067/GPMGV/EPFL/DATA201). The dataset consists of a network of 16 Parsivel disdrometers deployed by the Environmental Remote Sensing Laboratory (Laboratoire de Télédétection Environnementale – LTE) on the Ecole Polytechnique Federale de Lausanne (EPFL) campus in Lausanne, Switzerland for about 16 months from March 2009 to July 2010. The distribution of the disdrometers was to...

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