<?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-1.7, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Ground based in situ observations of filter_2pack at Chopok (SK0002R)" />
  <attribute name="keywords" value="SK0002R, sulphur_dioxide, nitric_acid, mass_concentration_of_sulphur_dioxide_expressed_as_sulphur_in_air, mass_concentration_of_total_sulphateexpressed_as_sulphur_in_dry_aerosol_particles_in_air, EMEP, air, Chopok, mass_concentration_of_nitric_acid_expressed_as_nitrogen_in_air, sulphate_total, aerosol" />
  <attribute name="id" value="SK0002R.19920101070000.20181210133000.filter_2pack..air.1y.1d.CZ01L_f2p_02..lev2.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="EMEP" />
  <attribute name="acknowledgement" type="double" />
  <attribute name="license" value="EMEP: Public open access. We encourage contacting data originators if substatial use of individual time series is planned (fair use data policy)." />
  <attribute name="summary" value="Ground based in situ observations of filter_2pack at Chopok (SK0002R). These measurements are gathered as a part of the following projects EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: nitric_acid in air (mass_concentration_of_nitric_acid_expressed_as_nitrogen_in_air), sulphate_total in aerosol (mass_concentration_of_total_sulphateexpressed_as_sulphur_in_dry_aerosol_particles_in_air), sulphur_dioxide in air (mass_concentration_of_sulphur_dioxide_expressed_as_sulphur_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="CZ01L, Czech Hydrometeorological Institute, Na Sabatce 17, CZ-14306 PRAHA 4, Czech Republic" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2018-12-10T13:30:00 UTC" />
  <attribute name="date_metadata_modified" value="2018-12-10T13:30:00 UTC" />
  <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 (48.933333 19.583333 2008.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="48.933333" />
  <attribute name="geospatial_lat_max" type="double" value="48.933333" />
  <attribute name="geospatial_lon_min" type="double" value="19.583333" />
  <attribute name="geospatial_lon_max" type="double" value="19.583333" />
  <attribute name="geospatial_vertical_min" type="double" value="2008.0" />
  <attribute name="geospatial_vertical_max" type="double" value="2008.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="1992-01-01T07:00:00 UTC" />
  <attribute name="time_coverage_end" value="1993-01-01T07:00:00 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="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;Set type code&quot;: &quot;TU&quot;, &#xA;    &quot;Timezone&quot;: &quot;UTC&quot;, &#xA;    &quot;File name&quot;: &quot;SK0002R.19920101070000.20181210133000.filter_2pack..air.1y.1d.CZ01L_f2p_02..lev2.nc&quot;, &#xA;    &quot;File creation&quot;: &quot;20190514090501&quot;, &#xA;    &quot;Startdate&quot;: &quot;19920101070000&quot;, &#xA;    &quot;Revision date&quot;: &quot;20181210133000&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;SK0002R&quot;, &#xA;    &quot;Platform code&quot;: &quot;SK0002S&quot;, &#xA;    &quot;Station name&quot;: &quot;Chopok&quot;, &#xA;    &quot;Station latitude&quot;: &quot;48.933333&quot;, &#xA;    &quot;Station longitude&quot;: &quot;19.583333&quot;, &#xA;    &quot;Station altitude&quot;: &quot;2008.0 m&quot;, &#xA;    &quot;Regime&quot;: &quot;IMG&quot;, &#xA;    &quot;Unit&quot;: &quot;ug S/m3&quot;, &#xA;    &quot;Matrix&quot;: &quot;air&quot;, &#xA;    &quot;Laboratory code&quot;: &quot;CZ01L&quot;, &#xA;    &quot;Instrument type&quot;: &quot;filter_2pack&quot;, &#xA;    &quot;Instrument name&quot;: &quot;f2p_02&quot;, &#xA;    &quot;Organization&quot;: &quot;CZ01L, Czech Hydrometeorological Institute, , , \&quot;Na Sabatce 17, CZ-14306 PRAHA 4, Czech Republic\&quot;, , , , &quot;, &#xA;    &quot;Frameworks&quot;: &quot;EMEP&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="366" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="sulphate_total_qc_flags" length="1" />
  <dimension name="nitric_acid_qc_flags" length="1" />
  <dimension name="sulphur_dioxide_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="1992-01-01T19:00:00Z" />
    <attribute name="time_coverage_end" value="1992-12-31T19:00:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="86400.0" />
    <attribute name="time_coverage_duration" value="P0Y0M365DT0H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-04-21" />
    <attribute name="nciso_version" value="2.4.7" />
  </group>
  <variable name="nitric_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="sulphur_dioxide_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="sulphur_dioxide" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_sulphur_dioxide_expressed_as_sulphur_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug S/m3" />
    <attribute name="ancillary_variables" value="sulphur_dioxide_qc sulphur_dioxide_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
  </variable>
  <variable name="nitric_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitric_acid_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug N/m3" />
    <attribute name="ancillary_variables" value="nitric_acid_qc nitric_acid_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
  </variable>
  <variable name="sulphate_total_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="sulphate_total_qc" shape="sulphate_total_qc_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" />
  </variable>
  <variable name="nitric_acid_qc" shape="nitric_acid_qc_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" />
  </variable>
  <variable name="sulphate_total" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_total_sulphateexpressed_as_sulphur_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug S/m3" />
    <attribute name="ancillary_variables" value="sulphate_total_qc sulphate_total_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
  </variable>
  <variable name="sulphur_dioxide_qc" shape="sulphur_dioxide_qc_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" />
  </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="cell_methods" value="mean" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="time_bnds" shape="time tbnds" type="double">
    <attribute name="long_name" value="time bounds for measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="_CoordinateAxisType" value="Time" />
    <attribute name="calendar" value="gregorian" />
  </variable>
  <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="cell_methods" value="mean" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="metadata_time_bnds" shape="metadata_time tbnds" type="double">
    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
</netcdf>
