GHRC News

The full suite of S-band profiler datasets from the GPM Ground Validation Midlatitude Continental Convective Clouds Experiment (MC3E) is now available:

GPM Ground Validation NOAA S-Band Profiler Minute Data MC3E     

GPM Ground Validation NOAA S-Band Profiler Raw Data SPC format MC3E 

GPM Ground Validation NOAA S-Band Profiler Raw Data netCDF format MC3E

GPM Ground Validation NOAA S-Band Profiler Original Dwell Data MC3E

Note that the Raw profiler data is available in two formats. The original SPC format requires specialized commercial software. The netCDF version contains the same data values and is compatible with the other datasets in the collection. The S-band profiler operates at 2.8 GHz, points vertically, and measures the backscattered power from raindrops and ice particles as precipitating cloud systems pass overhead. Operating between the precipitation (full-power) and attenuated (low-power) modes, the profiler alternated between modes collecting either 7 or 9 consecutive precipitation mode profiles separated by 1 attenuated mode profile. Both modes processed radar pulses collected during a 7-second dwell before calculating the Doppler velocity spectra at each radar range gate that were separated by 60-meters in the vertical. The Original Dwell and Minute datasets contain moment, pop spectra and calibrated spectra files.

Find all the data from MC3E here.

These data sets can also be ordered from the GHRC using the Hydrologic Data search, Retrieval, and Order system (HyDRO) at https://ghrc.nsstc.nasa.gov/hydro/.

 

The GHRC would like to also announce the availability of Open-source Project for a Network Data Access Protocol, OPeNDAP, for our entire RSS Ocean Product Suite which includes data products for the SSMI/SSMIS instruments on the DMSP F08, F10, F11, F13, F14, F15, F16, F17 polar orbiting satellites.   OPeNDAP is a data transport architecture and protocol widely used by Earth scientists to access remotely distributed data.  OPeNDAP includes standards for encapsulating structured data, annotating the data with attributes and adding semantics that describe the data.  Data and metadata hosted through OPeNDAP is available for both interactive browser-based access by users, or through programmatic interfaces allowing applications to access distributed data resources.  Access is enhanced by the ability to easily subsample, subset, aggregate and re-format data through interface options.  Several existing client applications (e.g. ncBrowse, IDV, Panoply, etc) and software libraries (e.g. netCDF) readily support OPeNDAP data access. 

The GHRC OPeNDAP server is available at https://ghrc.nsstc.nasa.gov/opendap/.

Please contact our User Services Office for more information.

 

GHRC has published the GPM Ground Validation  DC-8 Camera Nadir GCPEx dataset.  This  dataset contains geo-located visible-wavelength imagery of the ground obtained from the nadir camera aboard the NASA DC-8 in Canada during the Cold-season Precipitation experiment.  The data is available only  for February 20, 2012, a clear-air flight day.   DC-8 Camera nadir data may be useful for determining snow cover and lake ice cover for emissivity studies in conjunction with CoSMIR data, for example.   The dataset also includes, for convenience and reproducibility,  aircraft navigation information and ground temperatures to aid in emissivity retrievals.

 

GHRC has started publishing data from the the GPM Cold-season Precipitation Experiment (GCPEx). The GPM Ground Validation DC-8 Navigation and Housekeeping Data GCPEX dataset is composed of two types of files. National Suborbital Education and Research Center (NSERC) of the University of North Dakota (UND) provided the geo-located housekeeping data containing the altitude, pressure, air speed, wind speed and other attributes. The NASA DC-8 Navigation data in comma delimited IWG1 format were collected and utilized in-flight during the GCPEx mission and retrieved from the Real-Time Mission Monitor.

 

GHRC has published the GPM Ground Validation Flight Summaries and Flight Tracks Imagery MC3E dataset which  provides processed summaries from University of North Dakota including sonde maps, a radar animation, parameter versus time charts, radar track graphs, as well as aircraft and instrument operational times for flights during the Midlatitude Continental Convective Clouds Experiment (MC3E) held in Oklahoma in 2011. The Flight Tracks imagery includes one animation for May 11, 2011 and five-minute snapshots of flight tracks from the Real Time Mission Monitor (RTMM). This dataset will be distributed with the MC3E ER-2 Navigation and the Citation Navigation datasets, which are also part of the GHRC collection of GPM Ground Validation data from MC3E.

 

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