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  <attribute name="title" value="Delta_D_methane and methane at Zeppelin mountain (Ny-Ålesund)" />
  <attribute name="summary" value="Delta_D_methane and methane at Zeppelin mountain (Ny-Ålesund). These measurements are gathered as a part of the following projects ReGAME and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['delta_D_methane in air (mole_fraction_of_deltaDmethane_in_methane)', 'methane in air (mass_concentration_of_methane_in_air)', 'methane in air (mole_fraction_of_methane_in_air)']" />
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  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/CNXH-9N6R" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Platt, S., Röckmann, T., ReGAME, 2024, Delta_D_methane and methane at Zeppelin mountain (Ny-Ålesund), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/CNXH-9N6R" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="NO01L &quot;Norwegian Institute for Air Research&quot; NILU &quot;Instituttveien 18&quot; 2007 Kjeller Norway" />
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  <attribute name="date_created" value="2024-04-30T09:00:21.203333Z" />
  <attribute name="date_metadata_modified" value="2024-04-30T08:00:00Z" />
  <attribute name="creator_name" value="Stephen M. Platt, Thomas Röckmann" />
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  <attribute name="creator_email" value="sp@nilu.no, t.roeckmann@uu.nl" />
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  <attribute name="contributor_name" value="Thomas Röckmann" />
  <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" />
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  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="MULTIPOINT Z ((11.88934 78.90669 475), (11.88668 78.90715 475))" />
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  <attribute name="time_coverage_start" value="2012-09-18T07:25:00Z" />
  <attribute name="time_coverage_end" value="2023-12-05T08:58:00Z" />
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  <attribute name="ebas_organization" value="NO01L, Norwegian Institute for Air Research, NILU, , Instituttveien 18, , 2007, Kjeller, Norway" />
  <attribute name="ebas_framework_acronym" value="ReGAME" />
  <attribute name="ebas_framework_name" value="REliable Global Methane Emissions estimates in a changing world" />
  <attribute name="ebas_framework_description" value="&quot;In ReGAME, Reliable Global Methane Emissions estimates in a changing world, we integrate new measurement technologies into models to determine why atmospheric methane (CH4) is increasing, and whether climate-sensitive Arctic CH4 reservoirs will release significant CH4 to the atmosphere&quot;" />
  <attribute name="ebas_framework_contact_name" value="Stephen Matthew Platt" />
  <attribute name="ebas_framework_contact_email" value="sp@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Platt, Stephen M., sp@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , N-2027, Kjeller, Norway, ORCID=0000-0002-8439-6633&quot;, &quot;Röckmann, Thomas, t.roeckmann@uu.nl, University of Utrecht, UU, Institute for Marine and Atmospheric Research Utrecht, , , , Utrecht, The Netherlands, ORCID=0000-0002-6688-8968&quot;" />
  <attribute name="ebas_submitter" value="&quot;Röckmann, Thomas, t.roeckmann@uu.nl, University of Utrecht, UU, Institute for Marine and Atmospheric Research Utrecht, , , , Utrecht, The Netherlands, ORCID=0000-0002-6688-8968&quot;" />
  <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 framework: ReGAME. If the data are obtained for potential use in a publication or presentation, the University of Utrecht (UU), Institute for Marine and Atmospheric Research Utrecht, and the Climate and Environment Research Institute NILU should be informed about the nature of this work. If the UU and NILU data are essential to the study or if important results or conclusions rely on the UU and NILU data, co-authorship may be appropriate. This matter should be discussed at an early stage in the research. Contacts: Professor Dr. Thomas Röckmann (t.roeckmann@uu.nl), Dr. Carina van der Veen (C.vanderVeen@uu.nl), and Dr. Stephen Platt (sp@nilu.no) from NILU." />
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  <dimension name="time" length="586" />
  <dimension name="tbnds" length="2" />
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    <attribute name="standard_name" value="status_flag" />
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  <variable name="meta_methane_mg_per_m3_stddev" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_methane_nmol_per_mol_stddev" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_methane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="qc_methane_nmol_per_mol_stddev meta_methane_nmol_per_mol_stddev" />
    <attribute name="cell_methods" value="time: standard_deviation" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-04-30T08:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, automatically generated, manually inspected" />
    <attribute name="ebas_statistics" value="stddev" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="20mn" />
    <attribute name="ebas_orig_time_res" value="20mn" />
    <attribute name="ebas_station_code" value="NO0042G" />
    <attribute name="ebas_platform_code" value="NO0042S" />
    <attribute name="ebas_station_name" value="Zeppelin mountain (Ny-Ålesund)" />
    <attribute name="ebas_station_wdca_id" value="GAWANO__ZEP" />
    <attribute name="ebas_station_gaw_id" value="ZEP" />
    <attribute name="ebas_station_gaw_name" value="Zeppelin Mountain (Ny Ålesund)" />
    <attribute name="ebas_station_land_use" value="Gravel and stone" />
    <attribute name="ebas_station_setting" value="Polar" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="78.90715" />
    <attribute name="ebas_station_longitude" type="double" value="11.88668" />
    <attribute name="ebas_station_altitude" value="474.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="78.90669" />
    <attribute name="ebas_measurement_longitude" type="double" value="11.88934" />
    <attribute name="ebas_measurement_altitude" value="475.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="methane" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="NO01L" />
    <attribute name="ebas_instrument_type" value="unspecified_air_grab_sampler" />
    <attribute name="ebas_instrument_name" value="ZEP_sealed_air_sample" />
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    <attribute name="ebas_analytical_instrument_name" value="CF-IRMS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Fisher Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Delta Plus XP" />
    <attribute name="ebas_analytical_instrument_serial_number" value="SN7808" />
    <attribute name="ebas_method_ref" value="NL07L_CF-IRMS" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing with hood. Insulated, heated" />
    <attribute name="ebas_inlet_tube_length" value="25.0 m" />
    <attribute name="ebas_humidity_temperaure_control" value="Absorption dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Sample dried by using drierite." />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_organization" value="NO01L, Norwegian Institute for Air Research, NILU, , Instituttveien 18, , 2007, Kjeller, Norway" />
    <attribute name="ebas_framework_acronym" value="ReGAME" />
    <attribute name="ebas_framework_name" value="REliable Global Methane Emissions estimates in a changing world" />
    <attribute name="ebas_framework_description" value="&quot;In ReGAME, Reliable Global Methane Emissions estimates in a changing world, we integrate new measurement technologies into models to determine why atmospheric methane (CH4) is increasing, and whether climate-sensitive Arctic CH4 reservoirs will release significant CH4 to the atmosphere&quot;" />
    <attribute name="ebas_framework_contact_name" value="Stephen Matthew Platt" />
    <attribute name="ebas_framework_contact_email" value="sp@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Platt, Stephen M., sp@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , N-2027, Kjeller, Norway, ORCID=0000-0002-8439-6633&quot;, &quot;Röckmann, Thomas, t.roeckmann@uu.nl, University of Utrecht, UU, Institute for Marine and Atmospheric Research Utrecht, , , , Utrecht, The Netherlands, ORCID=0000-0002-6688-8968&quot;" />
    <attribute name="ebas_submitter" value="&quot;Röckmann, Thomas, t.roeckmann@uu.nl, University of Utrecht, UU, Institute for Marine and Atmospheric Research Utrecht, , , , Utrecht, The Netherlands, ORCID=0000-0002-6688-8968&quot;" />
    <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 framework: ReGAME. If the data are obtained for potential use in a publication or presentation, the University of Utrecht (UU), Institute for Marine and Atmospheric Research Utrecht, and the Climate and Environment Research Institute NILU should be informed about the nature of this work. If the UU and NILU data are essential to the study or if important results or conclusions rely on the UU and NILU data, co-authorship may be appropriate. This matter should be discussed at an early stage in the research. Contacts: Professor Dr. Thomas Röckmann (t.roeckmann@uu.nl), Dr. Carina van der Veen (C.vanderVeen@uu.nl), and Dr. Stephen Platt (sp@nilu.no) from NILU." />
    <attribute name="ebas_comment" value="Methane mixing ratios determined via additional measurements with a Picarro CRDS G2401 due to high standard deviation of the CF-IRMS measurement in some cases" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methaneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="methane amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_methane_nmol_per_mol_stddev" shape="qc_methane_nmol_per_mol_stddev_flags time" type="int">
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  <variable name="meta_methane_nmol_per_mol_stddev" 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" />
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    <attribute name="calendar" value="standard" />
    <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" />
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    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
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