[Esip-preserve] [EXTERNAL] File formats and mime types

[Matthew Mayernik]

Thanks Matt and Tyler, this is all super helpful!

Bset,
Matt

On Thu, Aug 4, 2022 at 6:21 AM Stevens, Tyler B. (GSFC-423.0)[KBRwyle] <
tyler.b.stevens at nasa.gov> wrote:

> The GCMD has an extensive file/data format/mime type list that NASA DAACs
> and other organizations use in their metadata and can be used in a faceted
> search. See
> https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/DataFormat and
> https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/MimeType
>
> Each keyword has a persistent UUID, definition, reference, and provenance
> information. There is also an established governance process for suggesting
> new keywords.
> See https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords for
> more details.
>
> Thanks,
>
> Tyler Stevens
> KBR | Senior Discipline Engineer, NASA EED-3
>
> Tyler.B.Stevens at nasa.gov
>
> <https://mail02.ndc.nasa.gov/owa/redir.aspx?C=V8CgRYg3bQhQJTfp1SZy8qz17zr57afdr3RPnU2Q1JJ5D_SfSAfVCA..&URL=http%3a%2f%2fgcmd.nasa.gov%2f>
> ------------------------------
> *From:* Esip-preserve <esip-preserve-bounces at lists.esipfed.org> on behalf
> of Matthew Mayernik via Esip-preserve <esip-preserve at lists.esipfed.org>
> *Sent:* Wednesday, August 3, 2022 4:23 PM
> *To:* ESIP Preserve List <esip-preserve at lists.esipfed.org>
> *Subject:* [EXTERNAL] [Esip-preserve] File formats and mime types
>
> Hi all,
> At NCAR we are wanting to be more consistent in how we record data file
> formats in metadata. The goal is to potentially enable people to
> search/filter data sets based on their file formats.
>
> We have a couple of questions about this:
>
> 1. Are there standard vocabularies for file formats that you use?
> 2. Should we be using mime types for this purpose?
> 3. How do you deal with compressed file formats, such as zip or tar, where
> the actual file types of the data require more work to determine?
>
> Thanks for any insight!
>
> Best,
> Matt
>
> Matthew Mayernik, Ph.D.
> Project Scientist & Research Data Services Specialist
> NCAR Library
> National Center for Atmospheric Research (NCAR)
> University Corporation for Atmospheric Research (UCAR)
> Boulder, CO, USA
> mayernik at ucar.edu
>
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