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        <gco:CharacterString>This dataset contains composite temperature, humidity and wind profiles, plus derived products, from the National Centre for Atmospheric Science's Atmospheric Measurement Facility (NCAS AMF) radiosondes launched from the Swedish Icebreaker Oden durning Arctic Cloud Summer Expedition (ACSE). ACSE took place in the Arctic during summer 2014. These measurements were used to complement a suite of other observations taken during the cruise. Those of the UK contribution, as well as selected other data, are available within the associated data collection in the Centre for Environmental Data Analysis (CEDA) archives. Other cruise data may be available in the NOAA ACSE and The Bolin Centre for Climate Research SWERUS (SWEdish-Russian-US) holdings - see online resources linked to this record.

These data consist of individual radiosonde profiles as 2D time/height fields, with all profiles interpolated onto a fixed vertical grid for ease of analysis/plotting across the outward (leg 1) and return (leg 2) parts of the expedition.

The vertical grid used is: 1m step to 5km, 10m step between 5 and 12 km, 50m step between 12 and 20 km. The data also includes derived variables (potential temperature etc).

Barbara Brooks (NCAS AMF) was responsible for the radiosonde ascents during the voyage and for the original data, whilst Ian Brookes prepared these data for archiving.


The Arctic Cloud Summer Expedition (ACSE) was a collaboration between the University of Leeds, the University of Stockholm, and NOAA-CIRES. ACSE aimed to study the response of Arctic boundary layer cloud to changes in surface conditions in the Arctic Ocean as a working package of the larger Swedish-Russian-US Investigation of Climate, Cryosphere and Carbon interaction (SWERUS-C3) Expedition in Summer 2014. This expedition was a core component to the overall SWERUS-C3 programme and was supported by the Swedish Polar Research Secretariat.

ACSE took place during a 3-month cruise of the Swedish Icebreaker Oden from Tromso, Norway to Barrow, Alaska and back over the summer of 2014. During this cruise ACSE scientists measured surface turbulent exchange, boundary layer structure, and cloud properties. Many of the measurements used remote sensing approaches - radar, lidar, and microwave radiometers - to retrieve vertical profiles of the dynamic and microphysical properties of the lower atmosphere and cloud.

The UK participation of ACSE was funded by the Natural Environment Research Council (NERC, grant: NE/K011820/1) and involved instrumentation from the Atmospheric Measurement Facility of the UK's National Centre for Atmospheric Science (NCAS AMF). This dataset collection contains data mainy from the UK contribution with some additional data from other institutes also archived to complement the suite of meteorological measurements.</gco:CharacterString>
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                    <gco:CharacterString>OX11 0QX</gco:CharacterString>
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                    <gco:CharacterString>United Kingdom</gco:CharacterString>
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                    <gco:CharacterString>support@ceda.ac.uk</gco:CharacterString>
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            <gmd:CI_RoleCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="publisher">publisher</gmd:CI_RoleCode>
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            <gmd:MD_MaintenanceFrequencyCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#MD_MaintenanceFrequencyCode" codeListValue="notPlanned">notPlanned</gmd:MD_MaintenanceFrequencyCode>
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            <gmd:MD_ScopeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#MD_ScopeCode" codeListValue="dataset">dataset</gmd:MD_ScopeCode>
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          <gmd:keyword>
            <gco:CharacterString>humidity</gco:CharacterString>
          </gmd:keyword>
          <gmd:keyword>
            <gco:CharacterString>winds</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>profiles</gco:CharacterString>
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      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>atmospheric conditions</gco:CharacterString>
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            <gmd:MD_KeywordTypeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
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                  <gmd:date>
                    <gco:Date>2008-06-01</gco:Date>
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                    <gmd:CI_DateTypeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
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        <gmd:MD_LegalConstraints>
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            <gmd:MD_RestrictionCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#MD_RestrictionCode" codeListValue="otherRestrictions">otherRestrictions</gmd:MD_RestrictionCode>
          </gmd:accessConstraints>
          <gmd:otherConstraints>
            <gmx:Anchor xlink:href="http://inspire.ec.europa.eu/metadata-codelist/LimitationsOnPublicAccess/noLimitations">Access to these data is available to any registered CEDA user. Please Login or Register for a CEDA account to gain access.</gmx:Anchor>
          </gmd:otherConstraints>
        </gmd:MD_LegalConstraints>
      </gmd:resourceConstraints>
      <gmd:resourceConstraints>
        <gmd:MD_LegalConstraints>
          <gmd:useConstraints>
            <gmd:MD_RestrictionCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#MD_RestrictionCode" codeListValue="otherRestrictions">otherRestrictions</gmd:MD_RestrictionCode>
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          <gmd:otherConstraints>
            <gmx:Anchor xlink:title="Licence file link." xlink:href="http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/">Under the following licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.</gmx:Anchor>
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      <gmd:spatialRepresentationType>
        <gmd:MD_SpatialRepresentationTypeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#MD_SpatialRepresentationTypeCode" codeListValue="grid">grid</gmd:MD_SpatialRepresentationTypeCode>
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          <gmd:distance gco:nilReason="inapplicable" />
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        <gmd:LanguageCode codeList="http://www.loc.gov/standards/iso639-2/php/code_list.php" codeListValue="eng">English</gmd:LanguageCode>
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        <gmd:MD_TopicCategoryCode>climatologyMeteorologyAtmosphere</gmd:MD_TopicCategoryCode>
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                <gco:Decimal>180.0</gco:Decimal>
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                <gco:Decimal>69.66</gco:Decimal>
              </gmd:southBoundLatitude>
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                <gco:Decimal>85.23</gco:Decimal>
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        <gmd:EX_Extent>
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            <gmd:EX_TemporalExtent>
              <gmd:extent>
                <gml:TimePeriod gml:id="CEDA01">
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          <gmd:name>
            <gco:CharacterString>Data are CF-compliant NetCDF formatted.</gco:CharacterString>
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          <gmd:version gco:nilReason="unknown" />
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            <gmd:CI_ResponsibleParty>
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                <gmd:CI_Contact>
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                    <gmd:CI_Telephone>
                      <gmd:voice>
                        <gco:CharacterString>01235446432</gco:CharacterString>
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                    </gmd:CI_Telephone>
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                    <gmd:CI_Address>
                      <gmd:deliveryPoint>
                        <gco:CharacterString>Rutherford Appleton Laboratory</gco:CharacterString>
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                      <gmd:deliveryPoint>
                        <gco:CharacterString>Harwell</gco:CharacterString>
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                      <gmd:city>
                        <gco:CharacterString>Oxon</gco:CharacterString>
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                      <gmd:postalCode>
                        <gco:CharacterString>OX11 0QX</gco:CharacterString>
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                      <gmd:country>
                        <gco:CharacterString>United Kingdom</gco:CharacterString>
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                      <gmd:electronicMailAddress>
                        <gco:CharacterString>support@ceda.ac.uk</gco:CharacterString>
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                <gmd:CI_RoleCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="distributor">distributor</gmd:CI_RoleCode>
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      <gmd:transferOptions>
        <gmd:MD_DigitalTransferOptions>
          <gmd:onLine>
            <gmd:CI_OnlineResource>
              <gmd:linkage>
                <gmd:URL>https://catalogue.ceda.ac.uk/uuid/61cd9961ecef43edadae89f842598f47</gmd:URL>
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              <gmd:name>
                <gco:CharacterString>CEDA Data Catalogue Page</gco:CharacterString>
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                <gco:CharacterString>Detail and access information for the resource</gco:CharacterString>
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                <gmd:CI_OnLineFunctionCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
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        </gmd:MD_DigitalTransferOptions>
      </gmd:transferOptions>
      <gmd:transferOptions>
        <gmd:MD_DigitalTransferOptions>
          <gmd:onLine>
            <gmd:CI_OnlineResource>
              <gmd:linkage>
                <gmd:URL>http://data.ceda.ac.uk/badc/acse/data/ncas-radiosonde-2_composites/</gmd:URL>
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              <gmd:name>
                <gco:CharacterString>DOWNLOAD</gco:CharacterString>
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              <gmd:description>
                <gco:CharacterString>Download Data</gco:CharacterString>
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                <gmd:CI_OnLineFunctionCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="download">download</gmd:CI_OnLineFunctionCode>
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            </gmd:CI_OnlineResource>
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        </gmd:MD_DigitalTransferOptions>
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    </gmd:MD_Distribution>
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    <gmd:DQ_DataQuality>
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        <gmd:DQ_Scope>
          <gmd:level>
            <gmd:MD_ScopeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#MD_ScopeCode" codeListValue="dataset">dataset</gmd:MD_ScopeCode>
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        </gmd:DQ_Scope>
      </gmd:scope>
      <gmd:report>
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          <gmd:result>
            <gmd:DQ_ConformanceResult>
              <gmd:specification>
                <gmd:CI_Citation>
                  <gmd:title>
                    <gco:CharacterString>Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services</gco:CharacterString>
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                    <gmd:CI_Date>
                      <gmd:date>
                        <gco:Date>2010-12-08</gco:Date>
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                      <gmd:dateType>
                        <gmd:CI_DateTypeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication" />
                      </gmd:dateType>
                    </gmd:CI_Date>
                  </gmd:date>
                </gmd:CI_Citation>
              </gmd:specification>
              <gmd:explanation gco:nilReason="inapplicable" />
              <gmd:pass gco:nilReason="unknown" />
            </gmd:DQ_ConformanceResult>
          </gmd:result>
        </gmd:DQ_DomainConsistency>
      </gmd:report>
      <gmd:lineage>
        <gmd:LI_Lineage>
          <gmd:statement>
            <gco:CharacterString>Data were collected, quality controlled and prepared for archiving by the instrument scientists before upload to the Centre for Environmental Data Analysis (CEDA) for long term archiving.</gco:CharacterString>
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        </gmd:LI_Lineage>
      </gmd:lineage>
    </gmd:DQ_DataQuality>
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