<?xml version="1.0" encoding="UTF-8"?>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2" location="Not provided because of security concerns.">
  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Ground based in situ observations of nitrogen_dioxide at Hurdal (NO0056R) using glass_sinter" />
  <attribute name="keywords" value="NILU, mass_concentration_of_nitrogen_dioxide_expressed_as_nitrogen_in_air, NO0056R, Hurdal, nitrogen_dioxide, EMEP, air" />
  <attribute name="id" value="JANA-YZK4.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="EMEP, NILU" />
  <attribute name="acknowledgement" type="double" />
  <attribute name="doi" value="https://doi.org/10.48597/JANA-YZK4" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="summary" value="Ground based in situ observations of nitrogen_dioxide at Hurdal (NO0056R) using glass_sinter. These measurements are gathered as a part of the following projects EMEP, NILU and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: nitrogen_dioxide in air (mass_concentration_of_nitrogen_dioxide_expressed_as_nitrogen_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="NO01L, Norwegian Institute for Air Research, NILU, Instituttveien 18, 2007, Kjeller, Norway" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2023-02-08T09:45:55 UTC" />
  <attribute name="date_metadata_modified" value="2023-02-08T09:45:55 UTC" />
  <attribute name="creator_name" value="Wenche Aas" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="waa@nilu.no" />
  <attribute name="creator_institution" value="&quot;Norwegian Institute for Air Research, Atmosphere and Climate Department, NILU&quot;" />
  <attribute name="contributor_name" value="Anne Hjellbrekke" />
  <attribute name="contributor_role" value="data submitter" />
  <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 Z (60.372386 11.078142 300.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="60.372386" />
  <attribute name="geospatial_lat_max" type="double" value="60.372386" />
  <attribute name="geospatial_lon_min" type="double" value="11.078142" />
  <attribute name="geospatial_lon_max" type="double" value="11.078142" />
  <attribute name="geospatial_vertical_min" type="double" value="300.0" />
  <attribute name="geospatial_vertical_max" type="double" value="300.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2022-01-01T07:00:00 UTC" />
  <attribute name="time_coverage_end" value="2023-01-01T07:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0001-00-00T00:00:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-01T00:00:00" />
  <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_set_type_code" value="TU" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="JANA-YZK4.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/JANA-YZK4" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/JANA-YZK4" />
  <attribute name="ebas_file_creation" value="2023-03-06T10:35:27.842230 UTC" />
  <attribute name="ebas_export_state" value="2023-02-08T10:55:33.578463 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20220101070000" />
  <attribute name="ebas_revision_date" value="20230208094555" />
  <attribute name="ebas_statistics" value="arithmetic mean" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="1y" />
  <attribute name="ebas_resolution_code" value="1d" />
  <attribute name="ebas_station_code" value="NO0056R" />
  <attribute name="ebas_platform_code" value="NO0056S" />
  <attribute name="ebas_station_name" value="Hurdal" />
  <attribute name="ebas_station_latitude" value="60.372386" />
  <attribute name="ebas_station_longitude" value="11.078142" />
  <attribute name="ebas_station_altitude" value="300.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_component" value="nitrogen_dioxide" />
  <attribute name="ebas_unit" value="ug N/m3" />
  <attribute name="ebas_matrix" value="air" />
  <attribute name="ebas_laboratory_code" value="NO01L" />
  <attribute name="ebas_instrument_type" value="glass_sinter" />
  <attribute name="ebas_instrument_name" value="glass_d_0056" />
  <attribute name="ebas_instrument_manufacturer" value="NILU" />
  <attribute name="ebas_instrument_model" value="FK" />
  <attribute name="ebas_analytical_laboratory_code" value="NO01L" />
  <attribute name="ebas_analytical_measurement_technique" value="spectrophotometric" />
  <attribute name="ebas_analytical_instrument_name" value="AA500_autoanalyzer" />
  <attribute name="ebas_analytical_instrument_manufacturer" value="SEAL Analytical" />
  <attribute name="ebas_analytical_instrument_model" value="AA500 AutoAnalyzer" />
  <attribute name="ebas_method_ref" value="NO01L_AA500_autoanalyzer" />
  <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
  <attribute name="ebas_flow_rate" value="0.5 l/min" />
  <attribute name="ebas_blank_correction" value="Blank corrected" />
  <attribute name="ebas_humidity_temperaure_control" value="None" />
  <attribute name="ebas_humidity_temperaure_control_description" value="Filter kept at ambient conditions together with sampling head" />
  <attribute name="ebas_volume_std_temperature" value="ambient" />
  <attribute name="ebas_volume_std_pressure" value="ambient" />
  <attribute name="ebas_detection_limit" value="0.03 ug N/m3" />
  <attribute name="ebas_detection_limit_expl" value="Detection limit is determined by taking three times standard deviation of ensemble of field blanks" />
  <attribute name="ebas_qa1_measure_id" value="EMEP39" />
  <attribute name="ebas_qa1_date" value="2022-02-15 UTC" />
  <attribute name="ebas_qa1_outcome" value="pass" />
  <attribute name="ebas_qa1_bias" value="11.47 %" />
  <attribute name="ebas_qa1_variability" value="0.45 %" />
  <attribute name="ebas_qa1_document_name" value="Summary statistics EMEP laboratory intercalibration Round 39" />
  <attribute name="ebas_qa1_document_date" value="2022-02-15 UTC" />
  <attribute name="ebas_qa1_document_url" value="http://www.nilu.no/projects/ccc/qameasure/emep39.pdf" />
  <attribute name="ebas_organization" value="NO01L, Norwegian Institute for Air Research, NILU, , Instituttveien 18, , 2007, Kjeller, Norway" />
  <attribute name="ebas_framework_acronym" value="EMEP, NILU" />
  <attribute name="ebas_framework_name" value="European Monitoring and Evaluation Programme, Norwegian Institute for Air Research" />
  <attribute name="ebas_framework_description" value="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., Atmospheric measuremnts produced at NILU." />
  <attribute name="ebas_framework_contact_name" value="Kjetil Tørseth, Kjetil Tørseth" />
  <attribute name="ebas_framework_contact_email" value="kt@nilu.no, kt@nilu.no" />
  <attribute name="ebas_originator" value="Aas, Wenche, waa@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway, ORCID=0000-0002-2908-1970" />
  <attribute name="ebas_submitter" value="Hjellbrekke, Anne, agh@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway" />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.0,hdf5=1.12.2" />
  <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="comment" value="{&#xA;    &quot;Data definition&quot;: &quot;EBAS_1.1&quot;,&#xA;    &quot;Data license&quot;: &quot;https://creativecommons.org/licenses/by/4.0/&quot;,&#xA;    &quot;Set type code&quot;: &quot;TU&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;JANA-YZK4.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/JANA-YZK4&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/JANA-YZK4&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-03-06T10:35:27.842230 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2023-02-08T10:55:33.578463 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20220101070000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20230208094555&quot;,&#xA;    &quot;Statistics&quot;: &quot;arithmetic mean&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;1y&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1d&quot;,&#xA;    &quot;Station code&quot;: &quot;NO0056R&quot;,&#xA;    &quot;Platform code&quot;: &quot;NO0056S&quot;,&#xA;    &quot;Station name&quot;: &quot;Hurdal&quot;,&#xA;    &quot;Station latitude&quot;: &quot;60.372386&quot;,&#xA;    &quot;Station longitude&quot;: &quot;11.078142&quot;,&#xA;    &quot;Station altitude&quot;: &quot;300.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Component&quot;: &quot;nitrogen_dioxide&quot;,&#xA;    &quot;Unit&quot;: &quot;ug N/m3&quot;,&#xA;    &quot;Matrix&quot;: &quot;air&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;NO01L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;glass_sinter&quot;,&#xA;    &quot;Instrument name&quot;: &quot;glass_d_0056&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;NILU&quot;,&#xA;    &quot;Instrument model&quot;: &quot;FK&quot;,&#xA;    &quot;Analytical laboratory code&quot;: &quot;NO01L&quot;,&#xA;    &quot;Analytical measurement technique&quot;: &quot;spectrophotometric&quot;,&#xA;    &quot;Analytical instrument name&quot;: &quot;AA500_autoanalyzer&quot;,&#xA;    &quot;Analytical instrument manufacturer&quot;: &quot;SEAL Analytical&quot;,&#xA;    &quot;Analytical instrument model&quot;: &quot;AA500 AutoAnalyzer&quot;,&#xA;    &quot;Method ref&quot;: &quot;NO01L_AA500_autoanalyzer&quot;,&#xA;    &quot;Standard method&quot;: &quot;SOP=EMEP_manual_v2014&quot;,&#xA;    &quot;Flow rate&quot;: &quot;0.5 l/min&quot;,&#xA;    &quot;Blank correction&quot;: &quot;Blank corrected&quot;,&#xA;    &quot;Humidity/temperature control&quot;: &quot;None&quot;,&#xA;    &quot;Humidity/temperature control description&quot;: &quot;Filter kept at ambient conditions together with sampling head&quot;,&#xA;    &quot;Volume std. temperature&quot;: &quot;ambient&quot;,&#xA;    &quot;Volume std. pressure&quot;: &quot;ambient&quot;,&#xA;    &quot;Detection limit&quot;: &quot;0.03 ug N/m3&quot;,&#xA;    &quot;Detection limit expl.&quot;: &quot;Detection limit is determined by taking three times standard deviation of ensemble of field blanks&quot;,&#xA;    &quot;QA1 measure ID&quot;: &quot;EMEP39&quot;,&#xA;    &quot;QA1 date&quot;: &quot;2022-02-15 UTC&quot;,&#xA;    &quot;QA1 outcome&quot;: &quot;pass&quot;,&#xA;    &quot;QA1 bias&quot;: &quot;11.47 %&quot;,&#xA;    &quot;QA1 variability&quot;: &quot;0.45 %&quot;,&#xA;    &quot;QA1 document name&quot;: &quot;Summary statistics EMEP laboratory intercalibration Round 39&quot;,&#xA;    &quot;QA1 document date&quot;: &quot;2022-02-15 UTC&quot;,&#xA;    &quot;QA1 document URL&quot;: &quot;http://www.nilu.no/projects/ccc/qameasure/emep39.pdf&quot;,&#xA;    &quot;Organization&quot;: &quot;NO01L, Norwegian Institute for Air Research, NILU, , Instituttveien 18, , 2007, Kjeller, Norway&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;EMEP, NILU&quot;,&#xA;    &quot;Framework name&quot;: &quot;European Monitoring and Evaluation Programme, Norwegian Institute for Air Research&quot;,&#xA;    &quot;Framework description&quot;: &quot;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., Atmospheric measuremnts produced at NILU.&quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Kjetil Tørseth, Kjetil Tørseth&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;kt@nilu.no, kt@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Aas, Wenche, waa@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway, ORCID=0000-0002-2908-1970&quot;,&#xA;    &quot;Submitter&quot;: &quot;Hjellbrekke, Anne, agh@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway&quot;&#xA;}" />
  <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="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="time" length="365" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="nitrogen_dioxide_qc_flags" length="2" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2022-01-01T19:00:00Z" />
    <attribute name="time_coverage_end" value="2022-12-31T19:00:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="86400.0" />
    <attribute name="time_coverage_duration" value="P0Y0M364DT0H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-17" />
    <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>
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitrogen_dioxide_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="nitrogen_dioxide_qc nitrogen_dioxide_ebasmetadata" />
    <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="20230208094555" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_station_code" value="NO0056R" />
    <attribute name="ebas_platform_code" value="NO0056S" />
    <attribute name="ebas_station_name" value="Hurdal" />
    <attribute name="ebas_station_latitude" value="60.372386" />
    <attribute name="ebas_station_longitude" value="11.078142" />
    <attribute name="ebas_station_altitude" value="300.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_dioxide" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="NO01L" />
    <attribute name="ebas_instrument_type" value="glass_sinter" />
    <attribute name="ebas_instrument_name" value="glass_d_0056" />
    <attribute name="ebas_instrument_manufacturer" value="NILU" />
    <attribute name="ebas_instrument_model" value="FK" />
    <attribute name="ebas_analytical_laboratory_code" value="NO01L" />
    <attribute name="ebas_analytical_measurement_technique" value="spectrophotometric" />
    <attribute name="ebas_analytical_instrument_name" value="AA500_autoanalyzer" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="SEAL Analytical" />
    <attribute name="ebas_analytical_instrument_model" value="AA500 AutoAnalyzer" />
    <attribute name="ebas_method_ref" value="NO01L_AA500_autoanalyzer" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
    <attribute name="ebas_flow_rate" value="0.5 l/min" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Filter kept at ambient conditions together with sampling head" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="0.03 ug N/m3" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit is determined by taking three times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_organization" value="NO01L, Norwegian Institute for Air Research, NILU, , Instituttveien 18, , 2007, Kjeller, Norway" />
    <attribute name="ebas_framework_acronym" value="EMEP, NILU" />
    <attribute name="ebas_framework_name" value="European Monitoring and Evaluation Programme, Norwegian Institute for Air Research" />
    <attribute name="ebas_framework_description" value="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., Atmospheric measuremnts produced at NILU." />
    <attribute name="ebas_framework_contact_name" value="Kjetil Tørseth, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Aas, Wenche, waa@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway, ORCID=0000-0002-2908-1970" />
    <attribute name="ebas_submitter" value="Hjellbrekke, Anne, agh@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway" />
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    <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="nitrogen_dioxide_ebasmetadata" 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 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <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 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
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