<?xml version="1.0" encoding="UTF-8"?>
<gmd:MD_Metadata xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                 xmlns:gco="http://www.isotc211.org/2005/gco"
                 xmlns:gmd="http://www.isotc211.org/2005/gmd"
                 xmlns:srv="http://www.isotc211.org/2005/srv"
                 xmlns:gmx="http://www.isotc211.org/2005/gmx"
                 xmlns:gts="http://www.isotc211.org/2005/gts"
                 xmlns:gsr="http://www.isotc211.org/2005/gsr"
                 xmlns:gmi="http://www.isotc211.org/2005/gmi"
                 xmlns:gml="http://www.opengis.net/gml"
                 xmlns:xlink="http://www.w3.org/1999/xlink"
                 xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://www.isotc211.org/2005/gmx/gmx.xsd">
   <gmd:fileIdentifier>
      <gco:CharacterString>edu.ucar.opensky::technotes:171</gco:CharacterString>
   </gmd:fileIdentifier>
   <gmd:language>
      <gmd:LanguageCode codeList="http://www.loc.gov/standards/iso639-2/"
                        codeListValue="eng; USA"/>
   </gmd:language>
   <gmd:characterSet>
      <gmd:MD_CharacterSetCode codeListValue="utf8"
                               codeList="http://www.isotc211.org/namespace/resources/codeList.xml#MD_CharacterSetCode"/>
   </gmd:characterSet>
   <gmd:hierarchyLevel>
      <gmd:MD_ScopeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/ML_gmxCodelists.xml#MD_ScopeCode"
                        codeListValue="document"/>
   </gmd:hierarchyLevel>
   <gmd:contact>
      <gmd:CI_ResponsibleParty>
         <gmd:organisationName>
            <gco:CharacterString>UCAR/NCAR - Library</gco:CharacterString>
         </gmd:organisationName>
         <gmd:positionName>
            <gco:CharacterString>OpenSky Support</gco:CharacterString>
         </gmd:positionName>
         <gmd:contactInfo>
            <gmd:CI_Contact>
               <gmd:address>
                  <gmd:CI_Address>
                     <gmd:deliveryPoint>
                        <gco:CharacterString>PO Box 3000</gco:CharacterString>
                     </gmd:deliveryPoint>
                     <gmd:city>
                        <gco:CharacterString>Boulder</gco:CharacterString>
                     </gmd:city>
                     <gmd:administrativeArea>
                        <gco:CharacterString>CO</gco:CharacterString>
                     </gmd:administrativeArea>
                     <gmd:postalCode>
                        <gco:CharacterString>80307-3000</gco:CharacterString>
                     </gmd:postalCode>
                     <gmd:electronicMailAddress>
                        <gco:CharacterString>opensky@ucar.edu</gco:CharacterString>
                     </gmd:electronicMailAddress>
                  </gmd:CI_Address>
               </gmd:address>
               <gmd:onlineResource>
                  <gmd:CI_OnlineResource>
                     <gmd:linkage>
                        <gmd:URL>http://opensky.ucar.edu/</gmd:URL>
                     </gmd:linkage>
                     <gmd:name>
                        <gco:CharacterString>homepage</gco:CharacterString>
                     </gmd:name>
                  </gmd:CI_OnlineResource>
               </gmd:onlineResource>
            </gmd:CI_Contact>
         </gmd:contactInfo>
         <gmd:role>
            <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="pointOfContact">pointOfContact</gmd:CI_RoleCode>
         </gmd:role>
      </gmd:CI_ResponsibleParty>
   </gmd:contact>
   <gmd:dateStamp>
      <gco:DateTime>2025-12-26T16:49:06.424759</gco:DateTime>
   </gmd:dateStamp>
   <gmd:metadataStandardName>
      <gco:CharacterString>ISO 19115-2 Geographic Information - Metadata - Part 2:
                    Extensions for Imagery and Gridded Data</gco:CharacterString>
   </gmd:metadataStandardName>
   <gmd:metadataStandardVersion>
      <gco:CharacterString>ISO 19115-2:2009(E)</gco:CharacterString>
   </gmd:metadataStandardVersion>
   <gmd:dataSetURI>
      <gco:CharacterString>https://n2t.org/ark:/85065/d76h4gss</gco:CharacterString>
   </gmd:dataSetURI>
   <gmd:identificationInfo>
      <gmd:MD_DataIdentification>
         <gmd:citation>
            <gmd:CI_Citation>
               <gmd:title>
                  <gco:CharacterString>NCAR/RAF VMEbus Interface for the Particle Measuring Systems Optical Array Grey Probe</gco:CharacterString>
               </gmd:title>
               <gmd:date>
                  <gmd:CI_Date>
                     <gmd:date>
                        <gco:DateTime>1993-01-01T00:00:00Z</gco:DateTime>
                     </gmd:date>
                     <gmd:dateType>
                        <gmd:CI_DateTypeCode codeList="codeListLocation#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
                     </gmd:dateType>
                  </gmd:CI_Date>
               </gmd:date>
               <gmd:identifier>
                  <gmd:RS_Identifier>
                     <gmd:code>
                        <gco:CharacterString>https://n2t.org/ark:/85065/d76h4gss</gco:CharacterString>
                     </gmd:code>
                  </gmd:RS_Identifier>
               </gmd:identifier>
               <gmd:identifier>
                  <gmd:RS_Identifier>
                     <gmd:code>
                        <gco:CharacterString>https://doi.org/10.5065/D6W66HQZ</gco:CharacterString>
                     </gmd:code>
                  </gmd:RS_Identifier>
               </gmd:identifier>
               <gmd:citedResponsibleParty>
                  <gmd:CI_ResponsibleParty>
                     <gmd:individualName>
                        <gco:CharacterString>Pelk, J.</gco:CharacterString>
                     </gmd:individualName>
                     <gmd:role>
                        <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="author">author</gmd:CI_RoleCode>
                     </gmd:role>
                  </gmd:CI_ResponsibleParty>
               </gmd:citedResponsibleParty>
               <gmd:citedResponsibleParty>
                  <gmd:CI_ResponsibleParty>
                     <gmd:organisationName>
                        <gco:CharacterString>UCAR/NCAR - Library</gco:CharacterString>
                     </gmd:organisationName>
                     <gmd:role>
                        <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="publisher">publisher</gmd:CI_RoleCode>
                     </gmd:role>
                  </gmd:CI_ResponsibleParty>
               </gmd:citedResponsibleParty>
            </gmd:CI_Citation>
         </gmd:citation>
         <gmd:abstract>
            <gco:CharacterString>This Technical Note describes the design and operation of the NCAR/RAF VMEbus interface board for the Optical Array Grey Probe manufactured by Particle Measuring Systems, Inc. of Boulder, Colorado. This interface was developed at the NCAR Research Aviation Facility in order to provide an interface between the Grey Probes and the Aircraft Data Systems flown on the RAF aircraft. The RAF Aircraft Data Systems are designed around the VMEbus which is a computer bus widely used for industrial and instrumentation computers. There were no commercial interface boards available which met our needs, so a custom board has been developed. This Technical Note does not attempt to describe the operation or design of the Grey Probe other than the data and interface signals. It is assumed the reader has a basic understanding of the Grey Probe and its interface signals. The reader is referred to the manuals available from Particle Measuring Systems for more information about the Grey Probe.</gco:CharacterString>
         </gmd:abstract>
         <gmd:pointOfContact>
            <gmd:CI_ResponsibleParty>
               <gmd:organisationName>
                  <gco:CharacterString>UCAR/NCAR - Library</gco:CharacterString>
               </gmd:organisationName>
               <gmd:positionName>
                  <gco:CharacterString>OpenSky Support</gco:CharacterString>
               </gmd:positionName>
               <gmd:contactInfo>
                  <gmd:CI_Contact>
                     <gmd:address>
                        <gmd:CI_Address>
                           <gmd:deliveryPoint>
                              <gco:CharacterString>PO Box 3000</gco:CharacterString>
                           </gmd:deliveryPoint>
                           <gmd:city>
                              <gco:CharacterString>Boulder</gco:CharacterString>
                           </gmd:city>
                           <gmd:administrativeArea>
                              <gco:CharacterString>CO</gco:CharacterString>
                           </gmd:administrativeArea>
                           <gmd:postalCode>
                              <gco:CharacterString>80307-3000</gco:CharacterString>
                           </gmd:postalCode>
                           <gmd:electronicMailAddress>
                              <gco:CharacterString>opensky@ucar.edu</gco:CharacterString>
                           </gmd:electronicMailAddress>
                        </gmd:CI_Address>
                     </gmd:address>
                     <gmd:onlineResource>
                        <gmd:CI_OnlineResource>
                           <gmd:linkage>
                              <gmd:URL>http://opensky.ucar.edu/</gmd:URL>
                           </gmd:linkage>
                           <gmd:name>
                              <gco:CharacterString>homepage</gco:CharacterString>
                           </gmd:name>
                        </gmd:CI_OnlineResource>
                     </gmd:onlineResource>
                  </gmd:CI_Contact>
               </gmd:contactInfo>
               <gmd:role>
                  <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="pointOfContact">pointOfContact</gmd:CI_RoleCode>
               </gmd:role>
            </gmd:CI_ResponsibleParty>
         </gmd:pointOfContact>
         <gmd:resourceFormat>
            <gmd:MD_Format>
               <gmd:name>
                  <gco:CharacterString>PDF</gco:CharacterString>
               </gmd:name>
               <gmd:version/>
            </gmd:MD_Format>
         </gmd:resourceFormat>
         <gmd:descriptiveKeywords>
            <gmd:MD_Keywords>
               <gmd:keyword>
                  <gco:CharacterString>Text</gco:CharacterString>
               </gmd:keyword>
               <gmd:type>
                  <gmd:MD_KeywordTypeCode codeList="codeListLocation#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
               </gmd:type>
               <gmd:thesaurusName>
                  <gmd:CI_Citation>
                     <gmd:title>
                        <gco:CharacterString>Resource Type</gco:CharacterString>
                     </gmd:title>
                     <gmd:date>
                        <gmd:CI_Date>
                           <gmd:date>
                              <gco:DateTime>2016-01-01T00:00:00Z</gco:DateTime>
                           </gmd:date>
                           <gmd:dateType>
                              <gmd:CI_DateTypeCode codeList="codeListLocation#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
                           </gmd:dateType>
                        </gmd:CI_Date>
                     </gmd:date>
                  </gmd:CI_Citation>
               </gmd:thesaurusName>
            </gmd:MD_Keywords>
         </gmd:descriptiveKeywords>
         <gmd:descriptiveKeywords>
            <gmd:MD_Keywords>
               <gmd:keyword>
                  <gco:CharacterString>Cloud microphysics</gco:CharacterString>
               </gmd:keyword>
               <gmd:keyword>
                  <gco:CharacterString>Sensor characteristics</gco:CharacterString>
               </gmd:keyword>
               <gmd:type>
                  <gmd:MD_KeywordTypeCode codeList="codeListLocation#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
               </gmd:type>
               <gmd:thesaurusName>
                  <gmd:CI_Citation>
                     <gmd:title>
                        <gco:CharacterString>U.S. National Aeronautics and
                        Space Administration Global Change Master Directory</gco:CharacterString>
                     </gmd:title>
                     <gmd:alternateTitle>
                        <gco:CharacterString>GCMD</gco:CharacterString>
                     </gmd:alternateTitle>
                     <gmd:date>
                        <gmd:CI_Date>
                           <gmd:date>
                              <gco:Date>2021-09-17</gco:Date>
                           </gmd:date>
                           <gmd:dateType>
                              <gmd:CI_DateTypeCode codeList="codeListLocation#CI_DateTypeCode" codeListValue="revision">revision</gmd:CI_DateTypeCode>
                           </gmd:dateType>
                        </gmd:CI_Date>
                     </gmd:date>
                     <gmd:edition>
                        <gco:CharacterString>11.2</gco:CharacterString>
                     </gmd:edition>
                     <gmd:citedResponsibleParty>
                        <gmd:CI_ResponsibleParty>
                           <gmd:organisationName>
                              <gco:CharacterString>NASA Global Change Master
                                        Directory</gco:CharacterString>
                           </gmd:organisationName>
                           <gmd:role>
                              <gmd:CI_RoleCode codeList="codeListLocation#CI_RoleCode" codeListValue="originator">originator</gmd:CI_RoleCode>
                           </gmd:role>
                        </gmd:CI_ResponsibleParty>
                     </gmd:citedResponsibleParty>
                     <gmd:otherCitationDetails>
                        <gco:CharacterString>Valids List: Science and Services
                        Keywords</gco:CharacterString>
                     </gmd:otherCitationDetails>
                  </gmd:CI_Citation>
               </gmd:thesaurusName>
            </gmd:MD_Keywords>
         </gmd:descriptiveKeywords>
         <gmd:resourceConstraints>
            <gmd:MD_LegalConstraints>
               <gmd:useLimitation>
                  <gco:CharacterString>Copyright Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.</gco:CharacterString>
               </gmd:useLimitation>
               <gmd:otherConstraints>
                  <gco:CharacterString>None</gco:CharacterString>
               </gmd:otherConstraints>
            </gmd:MD_LegalConstraints>
         </gmd:resourceConstraints>
         <gmd:language>
            <gmd:LanguageCode codeList="codeListLocation#LanguageCode" codeListValue="eng">eng</gmd:LanguageCode>
         </gmd:language>
         <gmd:topicCategory>
            <gmd:MD_TopicCategoryCode>geoscientificInformation</gmd:MD_TopicCategoryCode>
         </gmd:topicCategory>
      </gmd:MD_DataIdentification>
   </gmd:identificationInfo>
</gmd:MD_Metadata>
