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  <attribute name="title" value="World Ocean Atlas 2018 : sea_water_salinity December 2005-2017 0.25 degree" />
  <attribute name="summary" value="Climatological mean salinity for the global ocean from in situ profile data" />
  <attribute name="references" value="Zweng, M. M, J. R. Reagan, D. Seidov, T. P. Boyer, R. A. Locarnini, H. E. Garcia, A. V. Mishonov, O. K. Baranova, C. R. Paver, K. W. Weathers, I. Smolyar, 2019: World Ocean Atlas 2018, Volume 2: Salinity. A. Mishonov, technical editor,  NOAA Atlas NESDIS 82." />
  <attribute name="institution" value="National Centers for Environmental Information (NCEI)" />
  <attribute name="comment" value="global climatology as part of the World Ocean Atlas project" />
  <attribute name="id" value="woa18_A5B7_s12_04.nc" />
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  <attribute name="sea_name" value="World-Wide Distribution" />
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  <attribute name="creator_institution" value="National Centers for Environmental Information" />
  <attribute name="project" value="World Ocean Atlas Project" />
  <attribute name="processing_level" value="processed" />
  <attribute name="keywords" value="Oceans&lt; Ocean Salinity &gt;" />
  <attribute name="keywords_vocabulary" value="ISO 19115" />
  <attribute name="standard_name_vocabulary" value="CF Standard Name Table v49" />
  <attribute name="contributor_name" value="Ocean Climate Laboratory" />
  <attribute name="contributor_role" value="Calculation of climatologies" />
  <attribute name="cdm_data_type" value="Grid" />
  <attribute name="publisher_name" value="National Centers for Environmental Information (NCEI)" />
  <attribute name="publisher_institution" value="National Centers for Environmental Information" />
  <attribute name="publisher_type" value="institution" />
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  <attribute name="license" value="These data are openly available to the public. Please acknowledge the use of these data with the text given in the acknowledgment attribute." />
  <attribute name="metadata_link" value="https://www.nodc.noaa.gov/OC5/woa18/" />
  <attribute name="date_created" value="2019-07-29 " />
  <attribute name="date_modified" value="2019-07-29 " />
  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="nbounds" length="2" />
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  <dimension name="lon" length="1440" />
  <dimension name="depth" length="57" />
  <dimension name="time" length="1" />
  <group name="CFMetadata">
    <attribute name="geospatial_lon_min" value="-179.875" type="float" />
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    <attribute name="metadata_creation" value="2026-04-11" />
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  <variable name="crs" shape="" type="int">
    <attribute name="grid_mapping_name" value="latitude_longitude" />
    <attribute name="epsg_code" value="EPSG:4326" />
    <attribute name="longitude_of_prime_meridian" type="float" value="0.0" />
    <attribute name="semi_major_axis" type="float" value="6378137.0" />
    <attribute name="inverse_flattening" type="float" value="298.25723" />
    <attribute name="_CoordinateTransformType" value="Projection" />
    <attribute name="_CoordinateAxisTypes" value="Lat Lon" />
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  <variable name="lat_bnds" shape="lat nbounds" type="float">
    <attribute name="comment" value="latitude bounds" />
    <attribute name="_ChunkSizes" type="uint" value="720 2" />
  </variable>
  <variable name="lon_bnds" shape="lon nbounds" type="float">
    <attribute name="comment" value="longitude bounds" />
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  <variable name="depth_bnds" shape="depth nbounds" type="float">
    <attribute name="comment" value="depth bounds" />
    <attribute name="_ChunkSizes" type="uint" value="57 2" />
  </variable>
  <variable name="climatology_bounds" shape="time nbounds" type="float">
    <attribute name="comment" value="This variable defines the bounds of the climatological time period for each time" />
    <attribute name="_ChunkSizes" type="uint" value="1 2" />
  </variable>
  <variable name="s_an" shape="time depth lat lon" type="float">
    <attribute name="standard_name" value="sea_water_salinity" />
    <attribute name="long_name" value="Objectively analyzed mean fields for sea_water_salinity at standard depth levels." />
    <attribute name="coordinates" value="time lat lon depth" />
    <attribute name="cell_methods" value="area: mean depth: mean time: mean within years time: mean over years" />
    <attribute name="grid_mapping" value="crs" />
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  </variable>
  <variable name="s_mn" shape="time depth lat lon" type="float">
    <attribute name="standard_name" value="sea_water_salinity" />
    <attribute name="long_name" value="Average of all unflagged interpolated values at each standard depth level for sea_water_salinity in each grid-square which contain at least one measurement." />
    <attribute name="coordinates" value="time lat lon depth" />
    <attribute name="cell_methods" value="area: mean depth: mean time: mean within years time: mean over years" />
    <attribute name="grid_mapping" value="crs" />
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  </variable>
  <variable name="s_dd" shape="time depth lat lon" type="int">
    <attribute name="standard_name" value="sea_water_salinity number_of_observations" />
    <attribute name="long_name" value="The number of observations of sea_water_salinity in each grid-square at each standard depth level." />
    <attribute name="coordinates" value="time lat lon depth" />
    <attribute name="cell_methods" value="area: sum depth: point time: sum" />
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    <attribute name="units" value="1" />
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    <attribute name="_ChunkSizes" type="uint" value="1 19 240 480" />
  </variable>
  <variable name="s_sd" shape="time depth lat lon" type="float">
    <attribute name="long_name" value="The standard deviation about the statistical mean of sea_water_salinity in each grid-square at each standard depth level." />
    <attribute name="coordinates" value="time lat lon depth" />
    <attribute name="cell_methods" value="area: mean depth: mean time: standard_deviation" />
    <attribute name="grid_mapping" value="crs" />
    <attribute name="units" value="1e-3" />
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  </variable>
  <variable name="s_se" shape="time depth lat lon" type="float">
    <attribute name="standard_name" value="sea_water_salinity standard_error" />
    <attribute name="long_name" value="The standard error about the statistical mean of sea_water_salinity in each grid-square at each standard depth level." />
    <attribute name="coordinates" value="time lat lon depth" />
    <attribute name="cell_methods" value="area: mean depth: mean time: mean" />
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    <attribute name="units" value="1e-3" />
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  </variable>
  <variable name="s_oa" shape="time depth lat lon" type="float">
    <attribute name="standard_name" value="sea_water_salinity" />
    <attribute name="long_name" value="statistical mean value minus the objectively analyzed mean value for sea_water_salinity." />
    <attribute name="coordinates" value="time lat lon depth" />
    <attribute name="cell_methods" value="area: mean depth: mean time: mean with years time: mean over years" />
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  </variable>
  <variable name="s_ma" shape="time depth lat lon" type="float">
    <attribute name="standard_name" value="sea_water_salinity" />
    <attribute name="long_name" value=" The objectively analyzed value for the given time period minus the objectively analyzed annual mean value for sea_water_salinity." />
    <attribute name="coordinates" value="time lat lon depth" />
    <attribute name="cell_methods" value="area: mean depth: mean time: mean within years time: mean over years" />
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    <attribute name="_ChunkSizes" type="uint" value="1 19 240 480" />
  </variable>
  <variable name="s_gp" shape="time depth lat lon" type="int">
    <attribute name="long_name" value="The number of grid-squares within the smallest radius of influence around each grid-square which contain a statistical mean for sea_water_salinity." />
    <attribute name="coordinates" value="time lat lon depth" />
    <attribute name="cell_methods" value="area: mean depth: mean time: mean within years time: mean over years" />
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    <attribute name="_ChunkSizes" type="uint" value="1 19 240 480" />
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    <attribute name="standard_name" value="latitude" />
    <attribute name="long_name" value="latitude" />
    <attribute name="units" value="degrees_north" />
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    <attribute name="bounds" value="lat_bnds" />
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    <attribute name="_CoordinateAxisType" value="Lat" />
  </variable>
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    <attribute name="standard_name" value="longitude" />
    <attribute name="long_name" value="longitude" />
    <attribute name="units" value="degrees_east" />
    <attribute name="axis" value="X" />
    <attribute name="bounds" value="lon_bnds" />
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    <attribute name="_CoordinateAxisType" value="Lon" />
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    <attribute name="standard_name" value="depth" />
    <attribute name="bounds" value="depth_bnds" />
    <attribute name="positive" value="down" />
    <attribute name="units" value="meters" />
    <attribute name="axis" value="Z" />
    <attribute name="_ChunkSizes" type="uint" value="57" />
    <attribute name="_CoordinateAxisType" value="Height" />
    <attribute name="_CoordinateZisPositive" value="down" />
  </variable>
  <variable name="time" shape="time" type="float">
    <attribute name="standard_name" value="time" />
    <attribute name="long_name" value="time" />
    <attribute name="units" value="months since 2005-01-01 00:00:00" />
    <attribute name="axis" value="T" />
    <attribute name="climatology" value="climatology_bounds" />
    <attribute name="_ChunkSizes" type="uint" value="1" />
    <attribute name="_CoordinateAxisType" value="Time" />
    <attribute name="calendar" value="gregorian" />
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