<?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="units" value="days" />
  <attribute name="long_name" value="Duration of spells &gt;6 days with nights below calendar 10th Percentile, Cold Spell" />
  <attribute name="cell_methods" value="time: minimum" />
  <attribute name="climatology_bounds" value="1981-01-01; 2010-12-31" />
  <attribute name="history" value="2026-03-17 14:06:11.571470" />
  <attribute name="Conventions" value="CF-1.7" />
  <attribute name="title" value="Extreme Temperature Indices" />
  <attribute name="institution" value="NSF NCAR CGD" />
  <attribute name="comment" value="Percentiles calculated from 1981-2010 climatological baseline per Zhang et al. 2009 10.1002/joc.1738" />
  <attribute name="source" value="E3SMv2 atm daily" />
  <attribute name="references" value="Danabasoglu et al. 2020 10.1029/2019MS001916; Rodgers et al. 2021 10.5194/esd-12-1393-2021" />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.2,hdf5=1.14.6" />
  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="lat" length="192" />
  <dimension name="lon" length="288" />
  <dimension name="year" length="166" />
  <group name="CFMetadata">
    <attribute name="geospatial_lon_min" value=".0" type="float" />
    <attribute name="geospatial_lat_min" value="-90.0" type="float" />
    <attribute name="geospatial_lon_max" value="358.75" type="float" />
    <attribute name="geospatial_lat_max" value="90.0" type="float" />
    <attribute name="geospatial_lon_units" value="degrees_east" />
    <attribute name="geospatial_lat_units" value="degrees_north" />
    <attribute name="geospatial_lon_resolution" value="1.25" />
    <attribute name="geospatial_lat_resolution" value="0.9424083769633508" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-07-02" />
    <attribute name="nciso_version" value="2.4.7" />
  </group>
  <variable name="CSDI" shape="year lat lon" type="float">
    <attribute name="_FillValue" type="float" value="NaN" />
    <attribute name="cell_methods" value="tasmin: time: minimum" />
    <attribute name="history" value="tasmin: &#xA;tasmin_per: &#xA;[2026-03-17 16:01:43] csdi_6: COLD_SPELL_DURATION_INDEX(tasmin=TREFHTMN, tasmin_per=per, window=6, freq='YS', resample_before_rl=True, bootstrap=False, op='&lt;') with options check_missing=any - xclim version: 0.57.0" />
    <attribute name="standard_name" value="cold_spell_duration_index" />
    <attribute name="long_name" value="Total number of days constituting events of at least 6 consecutive days where the daily minimum temperature is below the {unknown}th percentile" />
    <attribute name="description" value="Annual number of days with at least 6 consecutive days where the daily minimum temperature is below the {unknown}th percentile. a {unknown} day(s) window, centred on each calendar day in the {unknown} period, is used to compute the {unknown}th percentile(s)." />
    <attribute name="dtype" value="timedelta64[ns]" />
    <attribute name="units" value="days" />
  </variable>
  <variable name="lat" shape="lat" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="long_name" value="Latitude of Grid Cell Centers" />
    <attribute name="standard_name" value="latitude" />
    <attribute name="units" value="degrees_north" />
    <attribute name="axis" value="Y" />
    <attribute name="valid_min" type="double" value="-90.0" />
    <attribute name="valid_max" type="double" value="90.0" />
    <attribute name="bounds" value="lat_bnds" />
    <attribute name="_ChunkSizes" type="uint" value="192" />
    <attribute name="_CoordinateAxisType" value="Lat" />
  </variable>
  <variable name="lon" shape="lon" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="long_name" value="Longitude of Grid Cell Centers" />
    <attribute name="standard_name" value="longitude" />
    <attribute name="units" value="degrees_east" />
    <attribute name="axis" value="X" />
    <attribute name="valid_min" type="double" value="0.0" />
    <attribute name="valid_max" type="double" value="360.0" />
    <attribute name="bounds" value="lon_bnds" />
    <attribute name="_ChunkSizes" type="uint" value="288" />
    <attribute name="_CoordinateAxisType" value="Lon" />
  </variable>
  <variable name="year" shape="year" type="long" />
</netcdf>
