<?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 ammonia at Westerland (DE0001R) using denuder" />
  <attribute name="keywords" value="Westerland, air, DE0001R, CAMP, mass_concentration_of_ammonia_expressed_as_nitrogen_in_air, ammonia, EMEP" />
  <attribute name="id" value="4RPP-BXG9.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="CAMP, EMEP" />
  <attribute name="acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/4RPP-BXG9" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Markus Wallasch, ammonia - denuder at Westerland, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/4RPP-BXG9" />
  <attribute name="summary" value="Ground based in situ observations of ammonia at Westerland (DE0001R) using denuder. 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: ammonia in air (mass_concentration_of_ammonia_expressed_as_nitrogen_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="DE03L, Umweltbundesamt, UBA-LA, Langen, Paul-Ehrlich-Str. 29, 63225, Langen, Germany" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2015-10-20T14:55:39 UTC" />
  <attribute name="date_metadata_modified" value="2015-10-20T14:55:39 UTC" />
  <attribute name="creator_name" value="Markus Wallasch" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="" />
  <attribute name="creator_institution" value="" />
  <attribute name="contributor_name" value="Anke Penzlin" />
  <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 (54.892 8.3246 5.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="54.892" />
  <attribute name="geospatial_lat_max" type="double" value="54.892" />
  <attribute name="geospatial_lon_min" type="double" value="8.3246" />
  <attribute name="geospatial_lon_max" type="double" value="8.3246" />
  <attribute name="geospatial_vertical_min" type="double" value="5.0" />
  <attribute name="geospatial_vertical_max" type="double" value="5.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2013-12-03T07:00:00 UTC" />
  <attribute name="time_coverage_end" value="2014-12-30T07:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0001-00-27T00:00:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-07T00:00:00" />
  <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_citation" value="Markus Wallasch, ammonia - denuder at Westerland, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/4RPP-BXG9" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="4RPP-BXG9.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/4RPP-BXG9" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/4RPP-BXG9" />
  <attribute name="ebas_file_creation" value="2023-12-08T12:04:22.898991 UTC" />
  <attribute name="ebas_export_state" value="2015-10-23T07:01:05.207000 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20131203070000" />
  <attribute name="ebas_revision_date" value="20151020145539" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="initial revision, automatically generated, manually inspected" />
  <attribute name="ebas_statistics" value="arithmetic mean" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="56w" />
  <attribute name="ebas_resolution_code" value="1w" />
  <attribute name="ebas_sample_duration" value="1w" />
  <attribute name="ebas_orig_time_res" value="1w" />
  <attribute name="ebas_station_code" value="DE0001R" />
  <attribute name="ebas_platform_code" value="DE0001S" />
  <attribute name="ebas_station_name" value="Westerland" />
  <attribute name="ebas_station_gaw_id" value="WES" />
  <attribute name="ebas_station_gaw_name" value="Westerland" />
  <attribute name="ebas_station_other_ids" value="DEUB001 (UBA), 10020-0 (WMO)" />
  <attribute name="ebas_station_land_use" value="Grassland" />
  <attribute name="ebas_station_setting" value="Coastal" />
  <attribute name="ebas_station_gaw_type" value="C" />
  <attribute name="ebas_station_wmo_region" value="6" />
  <attribute name="ebas_station_latitude" value="54.925556" />
  <attribute name="ebas_station_longitude" value="8.309722" />
  <attribute name="ebas_station_altitude" value="12.0 m" />
  <attribute name="ebas_measuremenet_latitude" value="54.892" />
  <attribute name="ebas_measurement_longitude" value="8.3246" />
  <attribute name="ebas_measurement_altitude" value="5.0 m" />
  <attribute name="ebas_measurement_height" value="3.5 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_component" value="ammonia" />
  <attribute name="ebas_unit" value="ug N/m3" />
  <attribute name="ebas_matrix" value="air" />
  <attribute name="ebas_laboratory_code" value="DE03L" />
  <attribute name="ebas_instrument_type" value="denuder" />
  <attribute name="ebas_instrument_name" value="UBA_We_Den_0001" />
  <attribute name="ebas_instrument_manufacturer" value="UBA" />
  <attribute name="ebas_instrument_model" value="Olaf" />
  <attribute name="ebas_method_ref" value="DE27L_UBA_Ng_FIA_0001" />
  <attribute name="ebas_standard_method" value="None" />
  <attribute name="ebas_inlet_type" value="Hat or hood" />
  <attribute name="ebas_inlet_description" value="downward facing funnel" />
  <attribute name="ebas_coating_solution" value="Citric acid" />
  <attribute name="ebas_sample_preparation" value="Water extraction" />
  <attribute name="ebas_blank_correction" value="Not blank corrected" />
  <attribute name="ebas_detection_limit" value="0.08224 ug N/m3" />
  <attribute name="ebas_detection_limit_expl" value="Estimated from calibration" />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
  <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as half of detection limit, flagged with 780" />
  <attribute name="ebas_organization" value="DE03L, Umweltbundesamt, UBA-LA, Langen, Paul-Ehrlich-Str. 29, , 63225, Langen, Germany" />
  <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="Wallasch, Markus, , , , , , , , , " />
  <attribute name="ebas_submitter" value="Penzlin, Anke, anke.penzlin@uba.de, Umweltbundesamt Langen, UBA, Air Monitoring Network, Paul-Ehrlich-Str. 29, , 63225, Langen, Germany" />
  <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  <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;Citation&quot;: &quot;Markus Wallasch, ammonia - denuder at Westerland, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/4RPP-BXG9&quot;,&#xA;    &quot;Set type code&quot;: &quot;TI&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;4RPP-BXG9.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/4RPP-BXG9&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/4RPP-BXG9&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-08T12:04:22.898991 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2015-10-23T07:01:05.207000 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20131203070000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20151020145539&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;initial revision, automatically generated, manually inspected&quot;,&#xA;    &quot;Statistics&quot;: &quot;arithmetic mean&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;56w&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1w&quot;,&#xA;    &quot;Sample duration&quot;: &quot;1w&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;1w&quot;,&#xA;    &quot;Station code&quot;: &quot;DE0001R&quot;,&#xA;    &quot;Platform code&quot;: &quot;DE0001S&quot;,&#xA;    &quot;Station name&quot;: &quot;Westerland&quot;,&#xA;    &quot;Station GAW-ID&quot;: &quot;WES&quot;,&#xA;    &quot;Station GAW-Name&quot;: &quot;Westerland&quot;,&#xA;    &quot;Station other IDs&quot;: &quot;DEUB001 (UBA), 10020-0 (WMO)&quot;,&#xA;    &quot;Station land use&quot;: &quot;Grassland&quot;,&#xA;    &quot;Station setting&quot;: &quot;Coastal&quot;,&#xA;    &quot;Station GAW type&quot;: &quot;C&quot;,&#xA;    &quot;Station WMO region&quot;: &quot;6&quot;,&#xA;    &quot;Station latitude&quot;: &quot;54.925556&quot;,&#xA;    &quot;Station longitude&quot;: &quot;8.309722&quot;,&#xA;    &quot;Station altitude&quot;: &quot;12.0 m&quot;,&#xA;    &quot;Measurement latitude&quot;: &quot;54.892&quot;,&#xA;    &quot;Measurement longitude&quot;: &quot;8.3246&quot;,&#xA;    &quot;Measurement altitude&quot;: &quot;5.0 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;3.5 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Component&quot;: &quot;ammonia&quot;,&#xA;    &quot;Unit&quot;: &quot;ug N/m3&quot;,&#xA;    &quot;Matrix&quot;: &quot;air&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;DE03L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;denuder&quot;,&#xA;    &quot;Instrument name&quot;: &quot;UBA_We_Den_0001&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;UBA&quot;,&#xA;    &quot;Instrument model&quot;: &quot;Olaf&quot;,&#xA;    &quot;Method ref&quot;: &quot;DE27L_UBA_Ng_FIA_0001&quot;,&#xA;    &quot;Standard method&quot;: &quot;None&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Hat or hood&quot;,&#xA;    &quot;Inlet description&quot;: &quot;downward facing funnel&quot;,&#xA;    &quot;Coating/Solution&quot;: &quot;Citric acid&quot;,&#xA;    &quot;Sample preparation&quot;: &quot;Water extraction&quot;,&#xA;    &quot;Blank correction&quot;: &quot;Not blank corrected&quot;,&#xA;    &quot;Detection limit&quot;: &quot;0.08224 ug N/m3&quot;,&#xA;    &quot;Detection limit expl.&quot;: &quot;Estimated from calibration&quot;,&#xA;    &quot;Zero/negative values code&quot;: &quot;Zero/negative impossible&quot;,&#xA;    &quot;Zero/negative values&quot;: &quot;Zero/negative values reported as half of detection limit, flagged with 780&quot;,&#xA;    &quot;Organization&quot;: &quot;DE03L, Umweltbundesamt, UBA-LA, Langen, Paul-Ehrlich-Str. 29, , 63225, Langen, Germany&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;CAMP, EMEP&quot;,&#xA;    &quot;Framework name&quot;: &quot;OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme&quot;,&#xA;    &quot;Framework description&quot;: &quot;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.&quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Wenche Aas, Kjetil Tørseth&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;waa@nilu.no, kt@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Wallasch, Markus, , , , , , , , , &quot;,&#xA;    &quot;Submitter&quot;: &quot;Penzlin, Anke, anke.penzlin@uba.de, Umweltbundesamt Langen, UBA, Air Monitoring Network, Paul-Ehrlich-Str. 29, , 63225, Langen, Germany&quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Request acknowledgement details from data originator&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="51" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="ammonia_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2013-12-20T19:00:00Z" />
    <attribute name="time_coverage_end" value="2014-12-26T19:00:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="641088.0" />
    <attribute name="time_coverage_duration" value="P0Y0M371DT0H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-18" />
    <attribute name="nciso_version" value="2.4.8" />
  </group>
  <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="ammonia" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ammonia_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="ammonia_qc ammonia_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="20151020145539" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, automatically generated, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1w" />
    <attribute name="ebas_orig_time_res" value="1w" />
    <attribute name="ebas_station_code" value="DE0001R" />
    <attribute name="ebas_platform_code" value="DE0001S" />
    <attribute name="ebas_station_name" value="Westerland" />
    <attribute name="ebas_station_gaw_id" value="WES" />
    <attribute name="ebas_station_gaw_name" value="Westerland" />
    <attribute name="ebas_station_other_ids" value="DEUB001 (UBA), 10020-0 (WMO)" />
    <attribute name="ebas_station_land_use" value="Grassland" />
    <attribute name="ebas_station_setting" value="Coastal" />
    <attribute name="ebas_station_gaw_type" value="C" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="54.925556" />
    <attribute name="ebas_station_longitude" value="8.309722" />
    <attribute name="ebas_station_altitude" value="12.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="54.892" />
    <attribute name="ebas_measurement_longitude" value="8.3246" />
    <attribute name="ebas_measurement_altitude" value="5.0 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ammonia" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="DE03L" />
    <attribute name="ebas_instrument_type" value="denuder" />
    <attribute name="ebas_instrument_name" value="UBA_We_Den_0001" />
    <attribute name="ebas_instrument_manufacturer" value="UBA" />
    <attribute name="ebas_instrument_model" value="Olaf" />
    <attribute name="ebas_method_ref" value="DE27L_UBA_Ng_FIA_0001" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="downward facing funnel" />
    <attribute name="ebas_coating_solution" value="Citric acid" />
    <attribute name="ebas_sample_preparation" value="Water extraction" />
    <attribute name="ebas_blank_correction" value="Not blank corrected" />
    <attribute name="ebas_detection_limit" value="0.08224 ug N/m3" />
    <attribute name="ebas_detection_limit_expl" value="Estimated from calibration" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as half of detection limit, flagged with 780" />
    <attribute name="ebas_organization" value="DE03L, Umweltbundesamt, UBA-LA, Langen, Paul-Ehrlich-Str. 29, , 63225, Langen, Germany" />
    <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="Wallasch, Markus, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Penzlin, Anke, anke.penzlin@uba.de, Umweltbundesamt Langen, UBA, Air Monitoring Network, Paul-Ehrlich-Str. 29, , 63225, Langen, Germany" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </variable>
  <variable name="ammonia_qc" shape="ammonia_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="ammonia_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" />
  </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="_CoordinateAxisType" value="Time" />
  </variable>
</netcdf>
