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                    <gmd:CI_RoleCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="author">author</gmd:CI_RoleCode>
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        <gmd:LanguageCode codeList="http://www.loc.gov/standards/iso639-2/php/code_list.php" codeListValue="eng">eng; USA</gmd:LanguageCode>
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      <gmd:topicCategory>
        <gmd:MD_TopicCategoryCode>oceans</gmd:MD_TopicCategoryCode>
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      <gmd:topicCategory>
        <gmd:MD_TopicCategoryCode>geoscientificInformation</gmd:MD_TopicCategoryCode>
      </gmd:topicCategory>
      <gmd:topicCategory>
        <gmd:MD_TopicCategoryCode>climatologyMeteorologyAtmosphere</gmd:MD_TopicCategoryCode>
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                <gco:Decimal>-86</gco:Decimal>
              </gmd:westBoundLongitude>
              <gmd:eastBoundLongitude>
                <gco:Decimal>-15</gco:Decimal>
              </gmd:eastBoundLongitude>
              <gmd:southBoundLatitude>
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              </gmd:southBoundLatitude>
              <gmd:northBoundLatitude>
                <gco:Decimal>31</gco:Decimal>
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          <gmd:temporalElement>
            <gmd:EX_TemporalExtent id="boundingTemporalExtent">
              <gmd:extent>
                <gml:TimePeriod gml:id="boundingTemporalExtentPeriod">
                  <gml:beginPosition>2021-12-11</gml:beginPosition>
                  <gml:endPosition>2022-01-11</gml:endPosition>
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              </gmd:extent>
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        <gmd:MD_Distributor>
          <gmd:distributorContact>
            <gmd:CI_ResponsibleParty>
              <gmd:organisationName>
                <gmx:Anchor xlink:href="https://ror.org/04r0wrp59" xlink:actuate="onRequest">NOAA National Centers for Environmental Information</gmx:Anchor>
              </gmd:organisationName>
              <gmd:contactInfo>
                <gmd:CI_Contact>
                  <gmd:phone>
                    <gmd:CI_Telephone>
                      <gmd:voice>
                        <gco:CharacterString>+1-301-713-3277</gco:CharacterString>
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                    </gmd:CI_Telephone>
                  </gmd:phone>
                  <gmd:address>
                    <gmd:CI_Address>
                      <gmd:electronicMailAddress>
                        <gco:CharacterString>ncei.info@noaa.gov</gco:CharacterString>
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                    </gmd:CI_Address>
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              </gmd:contactInfo>
              <gmd:role>
                <gmd:CI_RoleCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="pointOfContact">pointOfContact</gmd:CI_RoleCode>
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            </gmd:CI_ResponsibleParty>
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          <gmd:distributionOrderProcess>
            <gmd:MD_StandardOrderProcess>
              <gmd:fees>
                <gco:CharacterString>In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.</gco:CharacterString>
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              <gmd:orderingInstructions>
                <gco:CharacterString>Contact NCEI for other distribution options and instructions.</gco:CharacterString>
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            <gmd:MD_Format>
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                <gco:CharacterString>Originator data format</gco:CharacterString>
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              <gmd:transferSize>
                <gco:Real>623.228</gco:Real>
              </gmd:transferSize>
              <gmd:onLine>
                <gmd:CI_OnlineResource>
                  <gmd:linkage>
                    <gmd:URL>https://doi.org/10.25921/4vps-3851</gmd:URL>
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                    <gco:CharacterString>NCEI Dataset Landing Page</gco:CharacterString>
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                    <gco:CharacterString>Navigate directly to the URL for a descriptive web page with download links.</gco:CharacterString>
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                    <gmd:CI_OnLineFunctionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
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                    <gmd:URL>https://www.ncei.noaa.gov/archive/accession/oas/295083</gmd:URL>
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                  <gmd:applicationProfile>
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                  <gmd:description>
                    <gco:CharacterString>Navigate directly to the URL for a descriptive web page with download links.</gco:CharacterString>
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                    <gmd:CI_OnLineFunctionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
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              <gmd:onLine>
                <gmd:CI_OnlineResource>
                  <gmd:linkage>
                    <gmd:URL>https://www.ncei.noaa.gov/archive/accession/download/295083</gmd:URL>
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                  <gmd:protocol>
                    <gco:CharacterString>HTTPS</gco:CharacterString>
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                  <gmd:applicationProfile>
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                  <gmd:name>
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                  <gmd:description>
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                  </gmd:description>
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              </gmd:onLine>
              <gmd:onLine>
                <gmd:CI_OnlineResource>
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                    <gmd:URL>ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0229/0295083/</gmd:URL>
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                  <gmd:protocol>
                    <gco:CharacterString>FTP</gco:CharacterString>
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                  <gmd:applicationProfile>
                    <gco:CharacterString>Any FTP client</gco:CharacterString>
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                  <gmd:name>
                    <gco:CharacterString>FTP</gco:CharacterString>
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                  <gmd:description>
                    <gco:CharacterString>These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).</gco:CharacterString>
                  </gmd:description>
                  <gmd:function>
                    <gmd:CI_OnLineFunctionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="download">download</gmd:CI_OnLineFunctionCode>
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            </gmd:MD_DigitalTransferOptions>
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        </gmd:MD_Distributor>
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        <gmd:DQ_Scope>
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                          <gmd:date gco:nilReason="inapplicable" />
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                            <gmd:CI_DateTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
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                        <gmd:CI_ResponsibleParty>
                          <gmd:individualName gco:nilReason="inapplicable" />
                          <gmd:contactInfo>
                            <gmd:CI_Contact>
                              <gmd:onlineResource>
                                <gmd:CI_OnlineResource>
                                  <gmd:linkage>
                                    <gmd:URL>https://www.ncei.noaa.gov/archive/accession/0295083/1.1</gmd:URL>
                                  </gmd:linkage>
                                  <gmd:protocol>
                                    <gco:CharacterString>HTTPS</gco:CharacterString>
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                                    <gco:CharacterString>published 2024-07-31T12:56:32Z</gco:CharacterString>
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              <gmd:description>
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Units: PPTV;
Observation Category: in situ;
Sampling Instrument: Metal bellows pump on ship;
Sampling and Analyzing Method: Pressurizing air to 2 bar in to stainless steel canisters and analyzing the content with GC/MS.</gco:CharacterString>
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                <gco:CharacterString>Parameter or Variable: AIR TEMPERATURE (measured);
Units: ºC;
Observation Category: in situ;
Sampling Instrument: Ship weather station</gco:CharacterString>
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          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
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                <gco:CharacterString>Parameter or Variable: SALINITY - SURFACE WATER (measured);
Units: S;
Observation Category: in situ;
Sampling Instrument: thermosalinograph</gco:CharacterString>
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Units: pmol/L;
Observation Category: in situ;
Sampling Instrument: Flow-through pump</gco:CharacterString>
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Units: µg/L;
Observation Category: in situ;
Sampling Instrument: Flow-through pump</gco:CharacterString>
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Units: µg/L;
Observation Category: in situ;
Sampling Instrument: fluorometer</gco:CharacterString>
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            <gmi:LE_ProcessStep>
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Units: kHz;
Observation Category: in situ;
Sampling Instrument: echo sounder</gco:CharacterString>
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    <gmd:MD_MaintenanceInformation>
      <gmd:maintenanceAndUpdateFrequency>
        <gmd:MD_MaintenanceFrequencyCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_MaintenanceFrequencyCode" codeListValue="asNeeded">asNeeded</gmd:MD_MaintenanceFrequencyCode>
      </gmd:maintenanceAndUpdateFrequency>
      <gmd:maintenanceNote>
        <gco:CharacterString>Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.</gco:CharacterString>
      </gmd:maintenanceNote>
      <gmd:contact>
        <gmd:CI_ResponsibleParty>
          <gmd:organisationName>
            <gco:CharacterString>NOAA National Centers for Environmental Information</gco:CharacterString>
          </gmd:organisationName>
          <gmd:role>
            <gmd:CI_RoleCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="custodian">custodian</gmd:CI_RoleCode>
          </gmd:role>
        </gmd:CI_ResponsibleParty>
      </gmd:contact>
    </gmd:MD_MaintenanceInformation>
  </gmd:metadataMaintenance>
  <gmi:acquisitionInformation>
    <gmi:MI_AcquisitionInformation id="AMS">
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_beee">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>ADCP</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>ADCP</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>Acoustic Doppler Current Profiler

The Acoustic Doppler Current Profiler (ADCP) measures currents beneath a ship while underway. Sound signals sent from the moving ship bounce back to receivers aboard the ship. This provides a profile of water movement relative to the ship-precise modern navigation, allowing the ship's motion to be subtracted from the data. These devices are also used on moorings and profilers and, along with acoustic backscattering, measure animal biomass. Particles in the path of the sound waves, mostly plankton, reflect a small part of the sound energy back toward receivers, allowing researchers to make remote estimates of the sizes and numbers of animals present in the water column. Before the 1970's, the most technologically advanced instrument used to measure water velocity was known as a Doppler speed log. This evolved into the first commercial ADCP, produced in the mid-1970's, which used averaging. Later in the 1970's, the first vessel-mounted ADCP was developed to measure water velocity more accurately and to allow measurement in range cells over a depth profile.

As instruments evolved, so did new techniques in Doppler signal processing. Initially, Doppler speed logs used simple analog signal processing methods, which are still used in some commercial speed logs today. However, the first ADCPs incorporated analog-to-digital signal conversion over a narrow communication bandwidth. Around 1990, this technique was developed into broadband signal processing. Since then, broadband ADCPs have been able to generate very accurate, real-time velocity measurements.</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bed2">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>echo sounder</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>echo sounder</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>instrument used to determine water depth or bathymetry

also known as an echosounder</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_be2a">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>Flow-through pump</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>Flow-through pump</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>Flow-through pump refers to a pump system, often found onboard a research vessel. Such pump can feed seawater continuously into instrument that record certain properties of the seawater continuously.</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bee2">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>fluorometer</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>fluorometer</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>fluorometer</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_befb">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>meteorological sensor</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>meteorological sensor</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>Any meteorological sensor, but also see specific instruments such as aerovane, anemometer, etc.</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bec4">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>thermosalinograph</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>thermosalinograph</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>automated sea surface temperature and salinity instrument, usually attached to the hull of a ship

Thermosalinograph is an automated Sea Surface Temperature and Salinity measurement system making measurement on board a ship using a water intake.
[https://www.aoml.noaa.gov/phod/tsg/about.php 2021-01-29]</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:platform>
        <gmi:MI_Platform id="plat_9155">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>Sonne</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:description>
            <gco:CharacterString>ICES request for the vessel Sonne from GERMANY.

Name : Sonne
Flag : GERMANY - DE (ISO Country Code)
Call Sign : DBBE
Platform Class : 31 Research vessel
IMO : 9633927
Commissioned Date : 2014-08-11
Current Length : 116
Built : 2014-04-22
Notes : port of registry Wilhelmshaven. Operating Authority University of Hamburg. Owner Federal Ministry of Education and Research

Additional Information Sources:
- http://de.wikipedia.org/wiki/Sonne_%28Schiff,_2015%29
- http://www.meyerwerft.de/de/meyerwerft_de/medien/presseticker/pressemitteilung_detail_10049.jsp
- http://www.icbm.de/forschungsplattformen-schiffe/sonne/
- http://www.meyerwerft.de/en/meyerwerft_de/schiffe/forschungsschiff/forschungsschiff_1.jsp
General Comments:

Confirmed that the name is just "Sonne" and it has IMO 9633927. The web references to Sonne II are incorrect.

Run in parallel to the old "Sonne" till end of 2014

Confirmed by NOAA on 2014-05-12.</gco:CharacterString>
          </gmi:description>
          <gmi:instrument gco:nilReason="missing" />
        </gmi:MI_Platform>
      </gmi:platform>
    </gmi:MI_AcquisitionInformation>
  </gmi:acquisitionInformation>
</gmi:MI_Metadata>