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        <gco:CharacterString>This is a reference to data collected at the Veenkampen grassland site near Wageningen/Veenendaal, managed by the Meteorology and Air Quality group, Wageningen University (contact: observations.maq@wur.nl). On https://maq-observations.nl/ we offer all operational measurements from three sites: Veenkampen, Loobos and Amsterdam. These observations include, but do not limit themselves to, temperature, humidity, wind, radiation, soil moisture, soil temperature, energy and carbon fluxes and air quality (e.g. NOx, O3, PM). We offer up-to date charts of the current weather and air quality, as well as a historic dataset to explore, plot and download. You can visualize and download the data with our carefully designed graphical user interface, or download it using a custom tailored API key. We offer up to 627 data streams divided over the three stations at a temporal resolution of up to 20 seconds. The Veenkampen site is located in the ‘Binnenveld’ area between Wageningen and Veenendaal. It’s grass on clay and peat is typical for the area. Its surroundings were converted from farmland into a wetland habitat since 2020. The Veenkampen site is a continuation of the former ‘Haarweg’ and ‘Duivendaal’ sites, which were reallocated because of city expansion. Together they are home to the world’s longest record of global radiation and others. The Veenkampen site is both an operational and experimental site. The focus is on how CO2 and water exchange change with climate and particularly in extremes (droughts, heat waves). With respect to air quality, the site is a background location, without close traffic and industrial sources. The site is operated by MAQ at Wageningen University. It is regularly used by other partners too (e.g. other WUR groups, RIVM). Operationally, we measure meteorology, evaporation, CO2 exchange, soil variables and black carbon concentrations. Experimentally, we measure air quality concentrations and fluxes of NOx and NH3. The site is used for shorter experiments too.</gco:CharacterString>
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            <gmd:LocalisedCharacterString locale="#EN">This is a reference to data collected at the Veenkampen grassland site near Wageningen/Veenendaal, managed by the Meteorology and Air Quality group, Wageningen University (contact: observations.maq@wur.nl). On https://maq-observations.nl/ we offer all operational measurements from three sites: Veenkampen, Loobos and Amsterdam. These observations include, but do not limit themselves to, temperature, humidity, wind, radiation, soil moisture, soil temperature, energy and carbon fluxes and air quality (e.g. NOx, O3, PM). We offer up-to date charts of the current weather and air quality, as well as a historic dataset to explore, plot and download. You can visualize and download the data with our carefully designed graphical user interface, or download it using a custom tailored API key. We offer up to 627 data streams divided over the three stations at a temporal resolution of up to 20 seconds. The Veenkampen site is located in the ‘Binnenveld’ area between Wageningen and Veenendaal. It’s grass on clay and peat is typical for the area. Its surroundings were converted from farmland into a wetland habitat since 2020. The Veenkampen site is a continuation of the former ‘Haarweg’ and ‘Duivendaal’ sites, which were reallocated because of city expansion. Together they are home to the world’s longest record of global radiation and others. The Veenkampen site is both an operational and experimental site. The focus is on how CO2 and water exchange change with climate and particularly in extremes (droughts, heat waves). With respect to air quality, the site is a background location, without close traffic and industrial sources. The site is operated by MAQ at Wageningen University. It is regularly used by other partners too (e.g. other WUR groups, RIVM). Operationally, we measure meteorology, evaporation, CO2 exchange, soil variables and black carbon concentrations. Experimentally, we measure air quality concentrations and fluxes of NOx and NH3. The site is used for shorter experiments too.</gmd:LocalisedCharacterString>
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            <gmd:LocalisedCharacterString locale="#DUT">Dit is een verwijzing naar gegevens die zijn verzameld op het graslandgebied Veenkampen bij Wageningen/Veenendaal, beheerd door de groep Meteorologie en Luchtkwaliteit van de Universiteit Wageningen (contact: observations.maq@wur.nl). Op https://maq-observations.nl/ bieden wij alle operationele metingen aan vanuit drie locaties: Veenkampen, Loobos en Amsterdam. Deze waarnemingen omvatten, maar beperken zich niet tot, temperatuur, vochtigheid, wind, straling, bodemvocht, bodemtemperatuur, energie- en koolstoffluxen en luchtkwaliteit (bijv. NOx, O3, PM). We bieden actuele grafieken van het huidige weer en de luchtkwaliteit, evenals een historische dataset om te verkennen, in kaart te brengen en te downloaden. U kunt de gegevens visualiseren en downloaden met onze zorgvuldig ontworpen grafische gebruikersinterface, of downloaden met behulp van een op maat gemaakte API-key. Het terrein Veenkampen ligt in het gebied 'Binnenveld' tussen Wageningen en Veenendaal. Het gras op klei en veen is typisch voor het gebied. Sinds 2020 is de omgeving omgebouwd van landbouwgrond naar een waterrijk leefgebied. Het terrein Veenkampen is een voortzetting van de voormalige terreinen 'Haarweg' en 'Duivendaal', die vanwege stadsuitbreiding zijn verplaatst. Samen zijn ze de thuisbasis van 's werelds langste record van onder andere stralingsmetingen. De locatie in Veenkampen is zowel een operationele als een experimentele locatie. De focus ligt op de manier waarop de uitwisseling van CO2 en water verandert met het klimaat en vooral in extreme omstandigheden (droogtes, hittegolven). Wat de luchtkwaliteit betreft, is de locatie een achtergrondlocatie, zonder directe verkeers- en industriële bronnen. De site wordt beheerd door de vakgroep MAQ van de Wageningen Universiteit. Ook door andere partners (bijvoorbeeld andere WUR-groepen, RIVM) wordt er regelmatig gebruik van gemaakt. Operationeel meten we meteorologie, verdamping, CO2-uitwisseling, bodemvariabelen en zwarte koolstofconcentraties. Experimenteel meten we de luchtkwaliteitsconcentraties en fluxen van NOx en NH3. De site wordt ook gebruikt voor kortere experimenten.</gmd:LocalisedCharacterString>
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            <gmd:LocalisedCharacterString locale="#DUT">De gemeten data worden als Open Access data aangeleverd via https://maq-observations.nl/. Deze meetlocatie maakt tevens deel uit van het Ruisdael Observatorium, een landelijk observatorium voor metingen van de atmosfeer.</gmd:LocalisedCharacterString>
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                <gmd:LocalisedCharacterString locale="#EN">Please refer to our data license page: https://maq-observations.nl/maq-data-license/</gmd:LocalisedCharacterString>
              </gmd:textGroup>
              <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DUT">Meer info op onze data license pagina: https://maq-observations.nl/maq-data-license/</gmd:LocalisedCharacterString>
              </gmd:textGroup>
            </gmd:PT_FreeText>
          </gmd:useLimitation>
        </gmd:MD_Constraints>
      </gmd:resourceConstraints>
      <gmd:resourceConstraints>
        <gmd:MD_LegalConstraints>
          <gmd:accessConstraints>
            <gmd:MD_RestrictionCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_RestrictionCode" codeListValue="otherRestrictions" />
          </gmd:accessConstraints>
          <gmd:otherConstraints xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>https://creativecommons.org/licenses/by/4.0/deed.nl</gco:CharacterString>
            <gmd:PT_FreeText>
              <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#EN">https://creativecommons.org/licenses/by/4.0/deed.nl</gmd:LocalisedCharacterString>
              </gmd:textGroup>
            </gmd:PT_FreeText>
          </gmd:otherConstraints>
        </gmd:MD_LegalConstraints>
      </gmd:resourceConstraints>
      <gmd:resourceConstraints>
        <gmd:MD_SecurityConstraints>
          <gmd:classification>
            <gmd:MD_ClassificationCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_ClassificationCode" codeListValue="unclassified" />
          </gmd:classification>
        </gmd:MD_SecurityConstraints>
      </gmd:resourceConstraints>
      <gmd:spatialRepresentationType>
        <gmd:MD_SpatialRepresentationTypeCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_SpatialRepresentationTypeCode" codeListValue="textTable" />
      </gmd:spatialRepresentationType>
      <gmd:spatialResolution>
        <gmd:MD_Resolution>
          <gmd:equivalentScale>
            <gmd:MD_RepresentativeFraction>
              <gmd:denominator>
                <gco:Integer>1</gco:Integer>
              </gmd:denominator>
            </gmd:MD_RepresentativeFraction>
          </gmd:equivalentScale>
        </gmd:MD_Resolution>
      </gmd:spatialResolution>
      <gmd:language>
        <gmd:LanguageCode codeList="http://www.loc.gov/standards/iso639-2/" codeListValue="eng" />
      </gmd:language>
      <gmd:characterSet>
        <gmd:MD_CharacterSetCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_CharacterSetCode" codeListValue="utf8" />
      </gmd:characterSet>
      <gmd:topicCategory>
        <gmd:MD_TopicCategoryCode>climatologyMeteorologyAtmosphere</gmd:MD_TopicCategoryCode>
      </gmd:topicCategory>
      <gmd:extent>
        <gmd:EX_Extent>
          <gmd:geographicElement>
            <gmd:EX_GeographicBoundingBox>
              <gmd:westBoundLongitude>
                <gco:Decimal>5.621481</gco:Decimal>
              </gmd:westBoundLongitude>
              <gmd:eastBoundLongitude>
                <gco:Decimal>5.621481</gco:Decimal>
              </gmd:eastBoundLongitude>
              <gmd:southBoundLatitude>
                <gco:Decimal>51.981378</gco:Decimal>
              </gmd:southBoundLatitude>
              <gmd:northBoundLatitude>
                <gco:Decimal>51.981378</gco:Decimal>
              </gmd:northBoundLatitude>
            </gmd:EX_GeographicBoundingBox>
          </gmd:geographicElement>
          <gmd:temporalElement>
            <gmd:EX_TemporalExtent>
              <gmd:extent>
                <gml:TimePeriod gml:id="d7669e433a1052958">
                  <gml:beginPosition>2011-06-01</gml:beginPosition>
                  <gml:endPosition>9999-12-31</gml:endPosition>
                </gml:TimePeriod>
              </gmd:extent>
            </gmd:EX_TemporalExtent>
          </gmd:temporalElement>
        </gmd:EX_Extent>
      </gmd:extent>
    </gmd:MD_DataIdentification>
  </gmd:identificationInfo>
  <gmd:distributionInfo xmlns:gmx="http://schemas.opengis.net/iso/19139/20060504/gmx/gmx.xsd">
    <gmd:MD_Distribution>
      <gmd:distributionFormat>
        <gmd:MD_Format>
          <gmd:name xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>MySQL</gco:CharacterString>
            <gmd:PT_FreeText>
              <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#EN">MySQL</gmd:LocalisedCharacterString>
              </gmd:textGroup>
            </gmd:PT_FreeText>
          </gmd:name>
          <gmd:version>
            <gco:CharacterString>1.0</gco:CharacterString>
          </gmd:version>
          <gmd:specification gco:nilReason="missing">
            <gco:CharacterString />
          </gmd:specification>
        </gmd:MD_Format>
      </gmd:distributionFormat>
      <gmd:distributor>
        <gmd:MD_Distributor>
          <gmd:distributorContact>
            <gmd:CI_ResponsibleParty>
              <gmd:organisationName xsi:type="gmd:PT_FreeText_PropertyType">
                <gco:CharacterString>Koninklijk Nederlands Meteorologisch Instituut (KNMI)</gco:CharacterString>
                <gmd:PT_FreeText>
                  <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#EN">Koninklijk Nederlands Meteorologisch Instituut (KNMI)</gmd:LocalisedCharacterString>
                  </gmd:textGroup>
                  <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#DUT">Koninklijk Nederlands Meteorologisch Instituut (KNMI)</gmd:LocalisedCharacterString>
                  </gmd:textGroup>
                </gmd:PT_FreeText>
              </gmd:organisationName>
              <gmd:contactInfo>
                <gmd:CI_Contact>
                  <gmd:address>
                    <gmd:CI_Address>
                      <gmd:electronicMailAddress xsi:type="gmd:PT_FreeText_PropertyType">
                        <gco:CharacterString>opendata@knmi.nl</gco:CharacterString>
                        <gmd:PT_FreeText>
                          <gmd:textGroup>
                            <gmd:LocalisedCharacterString locale="#EN">opendata@knmi.nl</gmd:LocalisedCharacterString>
                          </gmd:textGroup>
                        </gmd:PT_FreeText>
                      </gmd:electronicMailAddress>
                    </gmd:CI_Address>
                  </gmd:address>
                </gmd:CI_Contact>
              </gmd:contactInfo>
              <gmd:role>
                <gmd:CI_RoleCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_RoleCode" codeListValue="pointOfContact" />
              </gmd:role>
            </gmd:CI_ResponsibleParty>
          </gmd:distributorContact>
          <gmd:distributionOrderProcess>
            <gmd:MD_StandardOrderProcess>
              <gmd:orderingInstructions xsi:type="gmd:PT_FreeText_PropertyType">
                <gco:CharacterString>This dataset is an external dataset, which means the data cannot be retrieved via the KNMI Data Platform. The dataset can only be retrieved from an external website: https://maq-observations.nl/</gco:CharacterString>
                <gmd:PT_FreeText>
                  <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#EN">This dataset is an external dataset, which means the data cannot be retrieved via the KNMI Data Platform. The dataset can only be retrieved from an external website: https://maq-observations.nl/</gmd:LocalisedCharacterString>
                  </gmd:textGroup>
                  <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#DUT">Deze dataset is een externe dataset en kan niet gedownload worden via het KNMI Data Platform. De dataset kan gedownload worden via een externe website: https://maq-observations.nl/</gmd:LocalisedCharacterString>
                  </gmd:textGroup>
                </gmd:PT_FreeText>
              </gmd:orderingInstructions>
              <gmd:turnaround>
                <gco:CharacterString>minutes</gco:CharacterString>
              </gmd:turnaround>
            </gmd:MD_StandardOrderProcess>
          </gmd:distributionOrderProcess>
        </gmd:MD_Distributor>
      </gmd:distributor>
      <gmd:transferOptions>
        <gmd:MD_DigitalTransferOptions>
          <gmd:transferSize>
            <gco:Real>2500</gco:Real>
          </gmd:transferSize>
          <gmd:onLine>
            <gmd:CI_OnlineResource>
              <gmd:linkage>
                <gmd:URL>https://dataplatform.knmi.nl/catalog/datasets/index.html?x-dataset=maq_observations_veenkampen&amp;x-dataset-version=1.0</gmd:URL>
              </gmd:linkage>
              <gmd:protocol>
                <gco:CharacterString>landingpage</gco:CharacterString>
              </gmd:protocol>
              <gmd:name xsi:type="gmd:PT_FreeText_PropertyType">
                <gco:CharacterString>KNMI Data Platform</gco:CharacterString>
                <gmd:PT_FreeText>
                  <gmd:textGroup>
                    <gmd:LocalisedCharacterString locale="#EN">KNMI Data Platform</gmd:LocalisedCharacterString>
                  </gmd:textGroup>
                </gmd:PT_FreeText>
              </gmd:name>
            </gmd:CI_OnlineResource>
          </gmd:onLine>
        </gmd:MD_DigitalTransferOptions>
      </gmd:transferOptions>
    </gmd:MD_Distribution>
  </gmd:distributionInfo>
  <gmd:dataQualityInfo xmlns:gmx="http://schemas.opengis.net/iso/19139/20060504/gmx/gmx.xsd">
    <gmd:DQ_DataQuality>
      <gmd:scope>
        <gmd:DQ_Scope>
          <gmd:level>
            <gmd:MD_ScopeCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_ScopeCode" codeListValue="dataset" />
          </gmd:level>
        </gmd:DQ_Scope>
      </gmd:scope>
      <gmd:report>
        <gmd:DQ_CompletenessOmission>
          <gmd:result>
            <gmd:DQ_QuantitativeResult>
              <gmd:valueUnit />
              <gmd:value>
                <gco:Record xsi:type="gmd:PT_FreeText_PropertyType">
                  <gco:CharacterString>Exclusion of data may consist because, but does not limit itself to, broken equipment, power outages, untrustworthy data and maintanence.</gco:CharacterString>
                  <gmd:PT_FreeText>
                    <gmd:textGroup>
                      <gmd:LocalisedCharacterString locale="#EN">Exclusion of data may consist because, but does not limit itself to, broken equipment, power outages, untrustworthy data and maintanence.</gmd:LocalisedCharacterString>
                    </gmd:textGroup>
                    <gmd:textGroup>
                      <gmd:LocalisedCharacterString locale="#DUT">Uitsluiting van gegevens kan bestaan ​​uit, maar beperkt zich niet tot, kapotte apparatuur, stroomstoringen, onbetrouwbare gegevens en onderhoud.</gmd:LocalisedCharacterString>
                    </gmd:textGroup>
                  </gmd:PT_FreeText>
                </gco:Record>
              </gmd:value>
            </gmd:DQ_QuantitativeResult>
          </gmd:result>
        </gmd:DQ_CompletenessOmission>
      </gmd:report>
      <gmd:lineage>
        <gmd:LI_Lineage>
          <gmd:statement xsi:type="gmd:PT_FreeText_PropertyType">
            <gco:CharacterString>The source data in the SQL database originates from various sensors. We post-process and quality control the collected data using Python scripts before sending to the SQL database. Near real-time data is submitted every 10 minutes. The data is available at a temporal resolution of up to 20 seconds. Data collection is fully automated and quality-controlled before sending to our database.</gco:CharacterString>
            <gmd:PT_FreeText>
              <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#EN">The source data in the SQL database originates from various sensors. We post-process and quality control the collected data using Python scripts before sending to the SQL database. Near real-time data is submitted every 10 minutes. The data is available at a temporal resolution of up to 20 seconds. Data collection is fully automated and quality-controlled before sending to our database.</gmd:LocalisedCharacterString>
              </gmd:textGroup>
              <gmd:textGroup>
                <gmd:LocalisedCharacterString locale="#DUT">De brongegevens in de SQL-database zijn afkomstig van verschillende sensoren. We verwerken en controleren de verzamelde gegevens met behulp van Python-scripts voordat ze naar de SQL-database worden verzonden. Near real-time gegevens worden elke 10 minuten verzonden. De data is beschikbaar op een tijdsresolutie van tot wel 20 seconden. Het verzamelen van gegevens is volledig geautomatiseerd en is quality controlled voordat het naar onze database wordt verzonden.</gmd:LocalisedCharacterString>
              </gmd:textGroup>
            </gmd:PT_FreeText>
          </gmd:statement>
        </gmd:LI_Lineage>
      </gmd:lineage>
    </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
</gmd:MD_Metadata>

