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    <dif:Entry_ID>ingv:https://data.ingv.it/metadata/iso19115/1208.xml</dif:Entry_ID>
    <dif:Entry_Title>A low-cost IoT-based accumulation chamber for measuring diffuse CO2 fluxes: calibration and field validation at Nea Kameni volcano (Santorini)</dif:Entry_Title>
    <dif:Data_Set_Citation>
      <dif:Dataset_Creator/>
      <dif:Dataset_Release_Date>2026-05-07</dif:Dataset_Release_Date>
      <dif:Dataset_Publisher/>
      <dif:Data_Presentation_Form/>
    </dif:Data_Set_Citation>
    <dif:ISO_Topic_Category/>
    <dif:Keyword>EU</dif:Keyword>
    <dif:Keyword>open data</dif:Keyword>
    <dif:Keyword>Local</dif:Keyword>
    <dif:Keyword>EDUCATION AND COMMUNICATIONS.information technology and data processing</dif:Keyword>
    <dif:Keyword>SCIENCE.natural and applied sciences.earth sciences.geology.geochemistry</dif:Keyword>
    <dif:Keyword>SCIENCE.natural and applied sciences.earth sciences.geology.volcanology</dif:Keyword>
    <dif:Keyword>Diffuse degassing</dif:Keyword>
    <dif:Keyword>Carbon dioxide</dif:Keyword>
    <dif:Keyword>Volcanology</dif:Keyword>
    <dif:Keyword>Volcanic monitoring</dif:Keyword>
    <dif:Keyword>Geochemistry</dif:Keyword>
    <dif:Temporal_Coverage>
      <dif:Start_Date>2026-03-31</dif:Start_Date>
      <dif:End_Date>2026-04-27</dif:End_Date>
    </dif:Temporal_Coverage>
    <dif:Access_Constraints>otherRestrictions</dif:Access_Constraints>
    <dif:Data_Set_Language/>
    <dif:Originating_Center>Istituto Nazionale di Geofisica e Vulcanologia - INGV</dif:Originating_Center>
    <dif:Summary>This dataset, provided as a three-sheet spreadsheet, details the laboratory calibration of an IoT accumulation chamber and the subsequent fieldwork.&#13;
- Sheet 1 (Calibration_data) contains calibration data, including simulated fluxes, the measured rate of CO2 concentration change observed by the accumulation chamber, and the resulting recalculated measured fluxes.&#13;
- Sheet 2 (Calibration_raw_data) contains the raw CO2 concentration time-series data for each individual measurement trial conducted during the calibration process.&#13;
- Sheet 3 (Nea_Kameni_data) contains diffuse flux data and geographic coordinates from fieldwork carried out at the Nea Kameni volcano in Santorini.</dif:Summary>
    <dif:DIF_Creation_Date>2026-04-27</dif:DIF_Creation_Date>
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      <dif:URL>https://github.com/giancarlotamburello/IoT-AC/blob/main/IOT_AC_DATA.md</dif:URL>
      <dif:Description>None</dif:Description>
    </dif:Related_URL>
    <dif:Metadata_Name>CEOS IDN DIF</dif:Metadata_Name>
    <dif:Metadata_Version>9.7</dif:Metadata_Version>
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