<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
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</div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<a href="https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/DataFormat" id="LPlnk485366">https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/DataFormat</a> and <a href="https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/MimeType" id="LPlnk444646">https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/MimeType</a><br>
</div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Each keyword has a persistent UUID, definition, reference, and provenance information. There is also an established governance process for suggesting new keywords. </div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
See <a href="https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords" id="LPNoLPOWALinkPreview">https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords</a> for more details. </div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Thanks, </div>
<div class="_Entity _EType_OWALinkPreview _EId_OWALinkPreview _EReadonly_1"></div>
<div>
<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div id="Signature">
<div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div style="">
<div style="">
<p class="MsoNormal" style="font-family:Tahoma; font-size:13px"><font face="Arial" size="2"><b></b></font></p>
<p style="font-family:Calibri,sans-serif; font-size:11pt; margin:0in 0in 0.0001pt">
<span style="font-size:12pt; font-family:Calibri,Helvetica,sans-serif">Tyler Stevens</span><span style="font-size:13.3333px"><br>
</span><span style="font-family:Calibri,Helvetica,sans-serif; font-size:12pt">KBR | </span><span style="font-family:Calibri,Helvetica,sans-serif; font-size:12pt">Senior Discipline Engineer</span><span style="font-family:Calibri,Helvetica,sans-serif; font-size:12pt">,
</span><span style="font-family:Calibri,Helvetica,sans-serif; font-size:12pt">NASA EED-3</span></p>
<p style="font-family:Calibri,sans-serif; font-size:11pt; margin:0in 0in 0.0001pt">
<span style="font-family:Calibri,Helvetica,sans-serif; font-size:12pt">Tyler.B.Stevens@nasa.gov</span></p>
<font face="Arial" size="2" style="font-family:Tahoma; font-size:13px"><a href="https://mail02.ndc.nasa.gov/owa/redir.aspx?C=V8CgRYg3bQhQJTfp1SZy8qz17zr57afdr3RPnU2Q1JJ5D_SfSAfVCA..&URL=http%3a%2f%2fgcmd.nasa.gov%2f" target="_blank"><span style="color:blue"></span></a></font></div>
</div>
</div>
</div>
</div>
<div id="appendonsend"></div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Esip-preserve <esip-preserve-bounces@lists.esipfed.org> on behalf of Matthew Mayernik via Esip-preserve <esip-preserve@lists.esipfed.org><br>
<b>Sent:</b> Wednesday, August 3, 2022 4:23 PM<br>
<b>To:</b> ESIP Preserve List <esip-preserve@lists.esipfed.org><br>
<b>Subject:</b> [EXTERNAL] [Esip-preserve] File formats and mime types</font>
<div> </div>
</div>
<div>
<div dir="ltr">Hi all,
<div>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.</div>
<div><br>
</div>
<div>We have a couple of questions about this:</div>
<div><br>
</div>
<div>1. Are there standard vocabularies for file formats that you use?</div>
<div>2. Should we be using mime types for this purpose? </div>
<div>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?</div>
<div><br>
</div>
<div>Thanks for any insight!</div>
<div><br>
</div>
<div>Best,</div>
<div>Matt</div>
<div><br>
</div>
<div>Matthew Mayernik, Ph.D.</div>
<div>Project Scientist & Research Data Services Specialist</div>
<div>NCAR Library</div>
<div>National Center for Atmospheric Research (NCAR)</div>
<div>University Corporation for Atmospheric Research (UCAR)</div>
<div>Boulder, CO, USA</div>
<div><a href="mailto:mayernik@ucar.edu">mayernik@ucar.edu</a></div>
</div>
</div>
</body>
</html>