GHRC News

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.

GHRC Represented at GEOSS Future Products Workshop

Ken Keiser (UAH/ITSC) represented GHRC at the GEOSS Future Products Workshop 2013, held March 26-28 at the NOAA Science Center in Silver Spring, MD. This workshop provided a unique opportunity to learn how GEOSS as a platform makes all sorts of sensor and model data available in an interoperable manner, with a particular focus on Sensor Web and Model Web.

GHRC Represented at Research Data Alliance Meeting in Sweden

Rahul Ramachandran (UAH/ITSC) represented GHRC at the first plenary meeting of the newly formed Research Data Alliance, March 18-23 in Gothenburg, Sweden. The goal of the RDA is to accelerate international data-driven innovation and discovery through the development and adoption of infrastructure, policy, practice, standards, and other deliverables. RDA sponsors include the RDA/US activity funded by the National Science Foundation, as well as the European Commission and Australia. Dr. Ramachandran will be leading a Big Data Working Group within RDA.

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