[esip-semantictech] NASA GCMD Keywords Version 9.0 Released (2019-11-12)

[James Gallagher]

> On Jan 10, 2020, at 14:08, Siri Jodha Khalsa via esip-semanticweb <esip-semanticweb at lists.esipfed.org> wrote:
> 
> I'm curious whether the ESIP semantic community has any opinions on these two controlled vocabularies.
> One question I have is why a measurement keyword list was necessary when GCMD already has the science keywords (a source for the original SWEET). i.e. why not integrate measurements (which are represented as variables in the science keywords) into the science keywords?
> 
> the data format list is even more perplexing to me. "incidence angle file" is a format? Georeferenced TIFF in addition to GeoTIFF?  DV? (digital value?) is a format?  KML as well as OGC KML? ASCII and text (what about unicode?) DEM, if this refers to digital elevation models with a .DEM extension from USGS, are ASCII files.
> 
> Many formats are subtypes of other formats listed. Wouldn't a better approach be to list the encodings (a much smaller list, which would tell users how to read the data with software) and then add the conventions that have been applied (e.g. CF for netCDF or GRIB for binary). For the encodings list, why not start with mime types?

+1 (encodings + conventions)

James

> 
> sjs
> 
> On 11/12/19 5:00 PM, Stevens, Tyler B. (GSFC-423.0)[Stinger Ghaffarian Technologies] via esip-semanticweb wrote:
>> The NASA Global Change Master Directory (GCMD) staff is pleased to announce the release of the GCMD keywords version 9.0. Version 9.0 consists of two new keyword schemes: (1) Measurement Name and (2) Granule Data Format.
>> 
>> The Measurement Name <https://gcmdservices.gsfc.nasa.gov/kms/concepts/concept_scheme/MeasurementName/?format=csv> list is a preliminary set of (~100) keywords that represent an observable property, usually geophysical, geo-biophysical, physical, or chemical. The Granule Data Format <https://gcmdservices.gsfc.nasa.gov/kms/concepts/concept_scheme/GranuleDataFormat/?format=csv> list of keywords represent the format of the data that is distributed by the data center.
>> The keywords help facilitate the classification and discovery of Earth Science data by providing a rich vocabulary for characterizing the data. The GCMD keywords are used by hundreds of data providers worldwide for categorizing the ~33,000 records stored in the Common Metadata Repository <http://earthdata.nasa.gov/cmr>.
>> 
>> For more information about the keywords and how to access them, please visit the Keyword Landing Page. <https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords> Questions about the keywords can be submitted to support at earthdata.nasa.gov <mailto:support at earthdata.nasa.gov> or directed to Valerie Dixon at valerie.dixon at nasa.gov <mailto:valerie.dixon at nasa.gov>.
>> 
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> --
> Siri-Jodha Singh KHALSA, Ph.D., SMIEEE
> National Snow and Ice Data Center
> University of Colorado
> Boulder, CO 80309-0449 Phone: 1-303-492-1445 GV: 1-303-736-9976
> http://cires.colorado.edu/~khalsa <http://cires.colorado.edu/~khalsa>
> http://orcid.org/0000-0001-9217-5550 <http://orcid.org/0000-0001-9217-5550>
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—
James Gallagher
jgallagher at opendap.org



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