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  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Aerosol_optical_depth at Abashiri" />
  <attribute name="summary" value="Aerosol_optical_depth at Abashiri. These measurements are gathered as a part of the following projects GAW-WDCA and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['sample_count in aerosol', 'aerosol_optical_depth in aerosol (atmosphere_optical_thickness_due_to_ambient_aerosol_particles)']" />
  <attribute name="keywords" value="Abashiri JP0007U aerosol_optical_depth aerosol GAW-WDCA atmosphere_optical_thickness_due_to_ambient_aerosol_particles" />
  <attribute name="id" value="VNHN-5HH3.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="GAW-WDCA" />
  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/VNHN-5HH3" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Yonekawa, N., Nakagawa, K., Nagai, Y., Fukuhara, K., Kawada, D., Nakamura, R., GAW-WDCA, 2025, Aerosol_optical_depth at Abashiri, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/VNHN-5HH3" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="JP02L &quot;Japan Meteorological Agency&quot; JMA &quot;Global Environment and Marine Department&quot; &quot;1-3-4 Ootemachi&quot; Chiyoda-ku 1008122 Tokyo Japan" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2026-01-07T11:46:38.807806Z" />
  <attribute name="date_metadata_modified" value="2025-12-16T00:00:00Z" />
  <attribute name="creator_name" value="Naoyuki Yonekawa, Katsuyuki Nakagawa, Yasuyuki Nagai, Kosuke Fukuhara, Daiki Kawada, Rie Nakamura" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="n_yonekawa@met.kishou.go.jp, katsu_nakagawa@met.kishou.go.jp, y-nagai@met.kishou.go.jp, kosuke.fukuhara@met.kishou.go.jp, d_kawada@met.kishou.go.jp, r-nakamura@met.kishou.go.jp" />
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  <attribute name="contributor_name" value="Naoyuki Yonekawa, Katsuyuki Nakagawa, Yasuyuki Nagai, Kosuke Fukuhara, Daiki Kawada, Rie Nakamura" />
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  <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="POINT Z (144.2797 44.0178 37.58)" />
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  <attribute name="time_coverage_start" value="2021-03-03T07:00:00Z" />
  <attribute name="time_coverage_end" value="2024-12-27T06:00:00Z" />
  <attribute name="time_coverage_duration" value="P0003-09-23T23:00:00" />
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  <attribute name="timezone" value="UTC" />
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  <attribute name="ebas_citation" value="Yonekawa, N., Nakagawa, K., Nagai, Y., Fukuhara, K., Kawada, D., Nakamura, R., GAW-WDCA, 2025, Aerosol_optical_depth at Abashiri, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/VNHN-5HH3" />
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  <attribute name="ebas_version_description" value="cloud-screened, manually inspected" />
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  <attribute name="ebas_period_code" value="4y" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_sample_duration" value="1h" />
  <attribute name="ebas_orig_time_res" value="10mn" />
  <attribute name="ebas_station_code" value="JP0007U" />
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  <attribute name="ebas_station_land_use" value="Residential" />
  <attribute name="ebas_station_setting" value="Suburban" />
  <attribute name="ebas_station_gaw_type" value="O" />
  <attribute name="ebas_station_wmo_region" type="long" value="2" />
  <attribute name="ebas_station_latitude" type="double" value="44.0178" />
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  <attribute name="ebas_station_altitude" value="37.58 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_unit" value="no unit" />
  <attribute name="ebas_matrix" value="aerosol" />
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  <attribute name="ebas_framework_name" value="World Data Centre for Aerosols" />
  <attribute name="ebas_framework_description" value="&quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
  <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Yonekawa, Naoyuki, n_yonekawa@met.kishou.go.jp, , , , , , , , &quot;, &quot;Nakagawa, Katsuyuki, katsu_nakagawa@met.kishou.go.jp, , , , , , , , &quot;, &quot;Nagai, Yasuyuki, y-nagai@met.kishou.go.jp, , , , , , , , &quot;, &quot;Fukuhara, Kosuke, kosuke.fukuhara@met.kishou.go.jp, , , , , , , , &quot;, &quot;Kawada, Daiki, d_kawada@met.kishou.go.jp, , , , , , , , &quot;, &quot;Nakamura, Rie, r-nakamura@met.kishou.go.jp, , , , , , , , &quot;" />
  <attribute name="ebas_submitter" value="&quot;Yonekawa, Naoyuki, n_yonekawa@met.kishou.go.jp, , , , , , , , &quot;, &quot;Nakagawa, Katsuyuki, katsu_nakagawa@met.kishou.go.jp, , , , , , , , &quot;, &quot;Nagai, Yasuyuki, y-nagai@met.kishou.go.jp, , , , , , , , &quot;, &quot;Fukuhara, Kosuke, kosuke.fukuhara@met.kishou.go.jp, , , , , , , , &quot;, &quot;Kawada, Daiki, d_kawada@met.kishou.go.jp, , , , , , , , &quot;, &quot;Nakamura, Rie, r-nakamura@met.kishou.go.jp, , , , , , , , &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: GAW-WDCA." />
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  <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="1413" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="3" />
  <dimension name="d_Wavelength" length="5" />
  <dimension name="qc_sample_count_flags" length="1" />
  <dimension name="qc_aerosol_optical_depth_amean_flags" length="1" />
  <dimension name="qc_aerosol_optical_depth_median_flags" length="1" />
  <dimension name="qc_aerosol_optical_depth_stddev_flags" length="1" />
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    <attribute name="time_coverage_start" value="2021-03-03T07:30:00Z" />
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    <attribute name="time_coverage_units" value="seconds" />
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    <attribute name="metadata_creation" value="2026-07-07" />
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  <variable name="time_bnds" shape="time tbnds" type="double">
    <attribute name="long_name" value="time bounds for measurement" />
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  <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_sample_count" shape="d_Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="no unit" />
    <attribute name="ancillary_variables" value="qc_sample_count meta_sample_count" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version_description" value="cloud-screened, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_setting" value="Suburban" />
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    <attribute name="ebas_submitter" value="&quot;Yonekawa, Naoyuki, n_yonekawa@met.kishou.go.jp, , , , , , , , &quot;, &quot;Nakagawa, Katsuyuki, katsu_nakagawa@met.kishou.go.jp, , , , , , , , &quot;, &quot;Nagai, Yasuyuki, y-nagai@met.kishou.go.jp, , , , , , , , &quot;, &quot;Fukuhara, Kosuke, kosuke.fukuhara@met.kishou.go.jp, , , , , , , , &quot;, &quot;Kawada, Daiki, d_kawada@met.kishou.go.jp, , , , , , , , &quot;, &quot;Nakamura, Rie, r-nakamura@met.kishou.go.jp, , , , , , , , &quot;" />
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    <attribute name="actris_variable_preferred_term" value="aerosol particle optical depth" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
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    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
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    <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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    <attribute name="_CoordinateAxisType" value="Time" />
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  <variable name="d_Wavelength" shape="d_Wavelength" type="double" />
</netcdf>
