GHRC News

GPM Ground Validation Midlatitude Continental Convective Clouds Experiment (MC3E) S-band Profiler Data Sets

GPM Ground Validation NOAA S-Band Profiler Minute Data MC3E sample image 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/.

SSMI/SSMIS F08, F10, F11, F13, F14, F15, F16, F17 Ocean Product Suite from Remote Sensing Systems (RSS) in netCDF (v4) format

The Global Hydrology Resource Center (GHRC DAAC), a NASA Earth science data center managed by the University of Alabama in Huntsville, is pleased to announce the release of the version 7 SSMI/SSMIS F08, F10, F11, F13, F14, F15, F16, F17 Ocean Product Suite from Remote Sensing Systems (RSS) in netCDF (v4) format. These data are generated by the Distributed Information Services for Climate and Ocean Products and Visualizations for Earth Research project, (DISCOVER), PI Frank Wentz, as part of the NASA Making Earth Science Data Records for Use in Research Environments (MEaSUREs) Program.

The RSS Ocean Product Suite includes the following data products for the SSMI/SSMIS instruments on the DMSP F08, F10, F11, F13, F14, F15, F16, F17 polar orbiting satellites:

RSS SSM/I Ocean Products Grids Daily

RSS SSM/I Ocean Products Grids 3-Day Average

RSS SSM/I Ocean Products Grids Weekly Average

RSS SSM/I Ocean Products Grids Monthly Average

Detailed information for these datasets is available in the SSMI and SSMIS netCDF Data Products document.

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

OPeNDAP

The GHRC would like to 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.

DC-8 Camera Nadir GCPEX Dataset Published

GCPEX logo 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.

GCPEX Data in Preliminary Stages of Publishing

GCPEX logo 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.

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