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  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Mercury at Heigham Holmes" />
  <attribute name="summary" value="Mercury at Heigham Holmes. These measurements are gathered as a part of the following projects CAMP, EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['mercury in air (mass_concentration_of_gaseous_elemental_mercury_in_air)']" />
  <attribute name="keywords" value="&quot;Heigham Holmes&quot; GB0017R mercury air CAMP EMEP mass_concentration_of_gaseous_elemental_mercury_in_air" />
  <attribute name="id" value="UB5Z-Q73W.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="CAMP, EMEP" />
  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/UB5Z-Q73W" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="CAMP, EMEP, 2008, Mercury at Heigham Holmes, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/UB5Z-Q73W" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="GB03L &quot;CEH Edinburgh&quot;" />
  <attribute name="date_created" value="2014-05-01T00:00:00.000000Z" />
  <attribute name="date_metadata_modified" value="2008-10-30T00:00:00Z" />
  <attribute name="publisher_type" value="institution" />
  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_institution" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_email" value="ebas@nilu.no" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="POINT (1.616667 52.716667)" />
  <attribute name="geospatial_lat_min" type="double" value="52.716667" />
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  <attribute name="geospatial_lon_min" type="double" value="1.616667" />
  <attribute name="geospatial_lon_max" type="double" value="1.616667" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="time_coverage_start" value="2004-04-27T08:00:00Z" />
  <attribute name="time_coverage_end" value="2007-01-04T08:00:00Z" />
  <attribute name="time_coverage_duration" value="P0002-08-08T00:00:00" />
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  <attribute name="timezone" value="UTC" />
  <attribute name="ebas_data_definition" value="EBAS_1.1" />
  <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="ebas_citation" value="CAMP, EMEP, 2008, Mercury at Heigham Holmes, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/UB5Z-Q73W" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="UB5Z-Q73W.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/UB5Z-Q73W" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/UB5Z-Q73W" />
  <attribute name="ebas_file_creation" value="2026-05-16T05:30:09.402688Z" />
  <attribute name="ebas_export_state" value="2014-05-01T00:00:00.000000Z" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="2004-04-27T08:00:00.000000Z" />
  <attribute name="ebas_revision_date" value="2008-10-30T00:00:00.000000Z" />
  <attribute name="ebas_statistics" value="arithmetic mean" />
  <attribute name="ebas_period_code" value="3y" />
  <attribute name="ebas_resolution_code" value="2w" />
  <attribute name="ebas_station_code" value="GB0017R" />
  <attribute name="ebas_platform_code" value="GB0017S" />
  <attribute name="ebas_station_name" value="Heigham Holmes" />
  <attribute name="ebas_station_latitude" type="double" value="52.716667" />
  <attribute name="ebas_station_longitude" type="double" value="1.616667" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_component" value="mercury" />
  <attribute name="ebas_unit" value="ng/m3" />
  <attribute name="ebas_matrix" value="air" />
  <attribute name="ebas_laboratory_code" value="GB03L" />
  <attribute name="ebas_instrument_type" value="gold_trap" />
  <attribute name="ebas_instrument_name" value="gt_17" />
  <attribute name="ebas_method_ref" value="GB03L_gold_trap" />
  <attribute name="ebas_organization" value="GB03L, CEH Edinburgh, , , , , , , " />
  <attribute name="ebas_framework_acronym" value="CAMP, EMEP" />
  <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
  <attribute name="ebas_framework_description" value="The OSPARCOM Comprehensive Atmospheric Monitoring Programme goal is the assessment of the atmospheric input of selected contaminants to the OSPAR maritime area and regions., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
  <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
  <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
  <attribute name="ebas_originator" value="" />
  <attribute name="ebas_submitter" value="" />
  <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP." />
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  <attribute name="Metadata_Conventions" value="Unidata Dataset Discovery v1.0" />
  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
  <attribute name="standard_name_vocabulary" value="CF-1.7, ACDD-1.3" />
  <attribute name="history" value="None" />
  <attribute name="creator_url" value="ebas.nilu.no" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="time" length="10" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="2" />
  <dimension name="qc_mercury_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2004-05-09T20:00:00Z" />
    <attribute name="time_coverage_end" value="2006-12-28T08:00:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="9240000.0" />
    <attribute name="time_coverage_duration" value="P0Y0M962DT12H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-18" />
    <attribute name="nciso_version" value="2.4.8" />
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  <variable name="time_bnds" shape="time tbnds" type="double">
    <attribute name="long_name" value="time bounds for measurement" />
  </variable>
  <variable name="metadata_time_bnds" shape="metadata_time tbnds" type="double">
    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
  </variable>
  <variable name="v_mercury" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_gaseous_elemental_mercury_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_mercury meta_mercury" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2008-10-30T00:00:00.000000Z" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_station_code" value="GB0017R" />
    <attribute name="ebas_platform_code" value="GB0017S" />
    <attribute name="ebas_station_name" value="Heigham Holmes" />
    <attribute name="ebas_station_latitude" type="double" value="52.716667" />
    <attribute name="ebas_station_longitude" type="double" value="1.616667" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="mercury" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="GB03L" />
    <attribute name="ebas_instrument_type" value="gold_trap" />
    <attribute name="ebas_instrument_name" value="gt_17" />
    <attribute name="ebas_method_ref" value="GB03L_gold_trap" />
    <attribute name="ebas_organization" value="GB03L, CEH Edinburgh, , , , , , , " />
    <attribute name="ebas_framework_acronym" value="CAMP, EMEP" />
    <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value="The OSPARCOM Comprehensive Atmospheric Monitoring Programme goal is the assessment of the atmospheric input of selected contaminants to the OSPAR maritime area and regions., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
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    <attribute name="ebas_submitter" value="" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/elementalmercurymassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gaseous elemental mercury mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/elemental" />
    <attribute name="actris_constraints_preferred_term" value="elemental" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/adsorptiontube" />
    <attribute name="actris_instrument_type_preferred_term" value="adsorption tube" />
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    <attribute name="actris_temporal_resolution" value="P14D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_mercury" shape="qc_mercury_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="meta_mercury" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
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  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
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    <attribute name="_CoordinateAxisType" value="Time" />
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