GHRC News

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 measurements at two different frequency bands (Ka- and Ku-band) and two different incidence angles (30 and 40 degrees). HIWRAP utilizes solid state transmitters along with a novel pulse compression scheme resulting in a system that is considerably more compact and requires less power than typical radars used for precipitation and wind measurements. A more detailed description of the HIWRAP system and system parameters can be found in Li et al., 2016. More information about the HIWRAP instrument can be found at the Goddard Space Flight Center High Altitude Radar Group: https://har.gsfc.nasa.gov/index.php?section=13.

GHRC 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) frequencies. For OLYMPEX, the D3R was collocated with the NPOL radar at a coastal Washington state location on the Olympic Peninsula. Due to blockage caused by NPOL, the measurement sector is limited to a 220 deg to 120 deg sector. The data is available in netCDF format.

The GHRC DAAC has published an update to the LIS/OTD Gridded Lightning Climatology Data Collection (collection DOI: http://dx.doi.org/10.5067/LIS/LIS-OTD/DATA311), to incorporate Lightning Imaging Sensor (LIS) data from the last year of data from the TRMM mission. This collection comprises the ten LIS/OTD Gridded Lightning Climatology Datasets listed below. These ten data sets offer full, annual, monthly and diurnal climatologies of lightning observed from space from May 1995 through December 2014, including both Optical Transient Detector and TRMM Lightning Imaging Sensor, at 0.5 and 2.5 degree resolutions. The three time series datasets also include data for January through April 2015. All data are available in both netCDF and HDF formats.

·      LIS/OTD 0.5 Degree High Resolution Annual Climatology (HRAC) http://dx.doi.org/10.5067/LIS/LIS-OTD/DATA301

·      LIS/OTD 0.5 Degree High Resolution Full Climatology (HRFC) http://dx.doi.org/10.5067/LIS/LIS-OTD/DATA302

·      LIS/OTD 0.5 Degree High Resolution Monthly Climatology (HRMC) http://dx.doi.org/10.5067/LIS/LIS-OTD/DATA303

·      LIS/OTD 2.5 Degree Low Res Annual Diurnal Climatology (LRADC) http://dx.doi.org/10.5067/LIS/LIS-OTD/DATA304

·      LIS/OTD 2.5 Degree Low Resolution Annual Climatology (LRAC) http://dx.doi.org/10.5067/LIS/LIS-OTD/DATA305

·      LIS/OTD 2.5 Degree Low Resolution Annual Climatology Time Series http://dx.doi.org/10.5067/LIS/LIS-OTD/DATA306

·      LIS/OTD 2.5 Degree Low Resolution Diurnal Climatology (LRDC) http://dx.doi.org/10.5067/LIS/LIS-OTD/DATA307

·      LIS/OTD 2.5 Degree Low Resolution Full Climatology (LRFC) http://dx.doi.org/10.5067/LIS/LIS-OTD/DATA308

·      LIS/OTD 2.5 Degree Low Resolution Monthly Time Series (LRMTS) http://dx.doi.org/10.5067/LIS/LIS-OTD/DATA309

·      LIS/OTD 2.5 Degree Low Resolution Time Series (LRTS) http://dx.doi.org/10.5067/LIS/LIS-OTD/DATA310

 

GHRC DAAC is nearing completion of a major software infrastructure upgrade. After an extensive test period, we are now using the open source PostGIS database management system (DBMS) and associated services for our local metadata catalog, replacing the legacy Oracle DBMS. A second component of the new infrastructure is the Data Publication Portal (DAPPeR), which provides tools for tracking and partial automation of the data publication workflow, from receipt of a new dataset through metadata generation and documentation to publication. DAPPeR is based on ORNL DAAC’s Semi-automated ingest System (SAuS), and will greatly facilitate GHRC’s data publication processes.

Helen Conover and Sherry Harrison attended the EOS and SNPP SIPS Workshop, held May 2-3, 2017, at NASA GSFC. Conover and Harrison represented the AMSR Science Investigator-led Processing System (SIPS) at the GHRC DAAC, presenting the status of the AMSR SIPS activities to NASA Management. These activities include generating standard products for the AMSR-E and AMSR2 instruments, and near real-time AMSR2 data processing as part of NASA’s Land and Atmosphere Near real-time Capability for Earth Observing Systems (LANCE).

Have you used our data? Register for updates