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  <idinfo>
    <datsetid>coastwatch.noaa.gov:nsidcSeaIceConc1850</datsetid>
    <citation>
      <citeinfo>
        <origin>
Project: NOAA NESDIS PolarWatch
Name: John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart
Email: walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org
Institution: NOAA NESDIS PolarWatch
InfoURL: https://nsidc.org/data/g10010
Source URL: ftp://sidads.colorado.edu/pub/DATASETS/NOAA/G10010_V2/
        </origin>
        <origin_cntinfo>
          <cntinfo>
            <cntorgp>
              <cntorg>NOAA NESDIS PolarWatch</cntorg>
              <cntper>John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart</cntper>
            </cntorgp>
            <cntemail>walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org</cntemail>
          </cntinfo>
        </origin_cntinfo>
        <pubdate>20190903</pubdate>
        <title>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</title>
        <edition>Unknown</edition>
        <geoform>raster digital data</geoform>
        <pubinfo>
          <pubplace>College Park, MD, USA</pubplace>
          <publish>ERDDAP, version 2.29.0, at NOAA.GOV</publish>
          <publish_cntinfo>
            <cntinfo>
              <cntorgp>
                <cntorg>NOAA.GOV</cntorg>
                <cntper>STAR IT</cntper>
              </cntorgp>
              <cntpos>ERDDAP administrator</cntpos>
              <cntaddr>
                <addrtype>Mailing and Physical Address</addrtype>
                <address>5830 University Research CT</address>
                <city>College Park</city>
                <state>MD</state>
                <postal>20740</postal>
                <country>USA</country>
              </cntaddr>
              <cntvoice>+1 301 683 3503</cntvoice>
              <cntemail>coastwatch.info@noaa.gov</cntemail>
            </cntinfo>
          </publish_cntinfo>
        </pubinfo>
        <onlink>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</onlink>
        <onlink>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</onlink>
        <onlink>https://coastwatch.noaa.gov/erddap/wms/nsidcSeaIceConc1850/request</onlink>
        <CI_OnlineResource>
          <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
          <name>Download data: Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
          <description>A web page for specifying a subset of the dataset and downloading data in any of several file formats.</description>
          <function>download data</function>
        </CI_OnlineResource>
        <CI_OnlineResource>
          <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</linkage>
          <name>Make a graph or map: Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
          <description>A web page for creating a graph or map of the data.</description>
          <function>download graph or map</function>
        </CI_OnlineResource>
        <CI_OnlineResource>
          <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850</linkage>
          <name>OPeNDAP service: Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
          <description>The base URL for the OPeNDAP service.  Add .html to get a web page with a form to download data. Add .dds to get the dataset's structure. Add .das to get the dataset's metadata. Add .dods to download data via the OPeNDAP protocol.</description>
          <function>OPeNDAP</function>
        </CI_OnlineResource>
        <CI_OnlineResource>
          <linkage>https://nsidc.org/data/g10010</linkage>
          <name>Background information: Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
          <description>Background information for the dataset.</description>
          <function>background information</function>
        </CI_OnlineResource>
        <CI_OnlineResource>
          <linkage>https://coastwatch.noaa.gov/erddap/wms/nsidcSeaIceConc1850/request</linkage>
          <name>WMS service: Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
          <description>The base URL for the WMS service for this dataset.</description>
          <function>WMS</function>
        </CI_OnlineResource>
        <lworkcit>
          <citeinfo>
            <origin>NOAA NESDIS PolarWatch</origin>
          </citeinfo>
        </lworkcit>
      </citeinfo>
    </citation>
    <descript>
      <abstract>Observations from historical sources are the basis of this monthly gridded sea ice concentration product that begins in 1850. In 1979, these sources give way to a single source: concentration from satellite passive microwave data. The historical observations come in many forms: ship observations, compilations by naval oceanographers, analyses by national ice services, and others. Monthly sea ice concentration is given in a 1/4 degree latitude by 1/4 degree longitude grid. In addition to the concentration array, for each month a corresponding source array indicates where each of 16 possible sources is used.</abstract>
      <purpose>Unknown</purpose>
      <supplinf>https://nsidc.org/data/g10010</supplinf>
    </descript>
    <timeperd>
      <timeinfo>
        <rngdates>
          <begdate>18500115</begdate>
          <enddate>20171216</enddate>
        </rngdates>
      </timeinfo>
      <current>ground condition</current>
    </timeperd>
    <status>
      <progress>Complete</progress>
      <update>As needed</update>
    </status>
    <spdom>
      <bounding>
        <westbc>-180.0</westbc>
        <eastbc>180.0</eastbc>
        <northbc>89.875</northbc>
        <southbc>30.125</southbc>
      </bounding>
    </spdom>
    <keywords>
      <theme>
        <themekt>GCMD Science Keywords</themekt>
        <themekey>1850</themekey>
        <themekey>Earth Science &gt; Cryosphere &gt; Sea Ice &gt; Ice Extent</themekey>
        <themekey>Earth Science &gt; Cryosphere &gt; Sea Ice &gt; Sea Ice Concentration</themekey>
        <themekey>Earth Science &gt; Oceans &gt; Sea Ice &gt; Ice Extent</themekey>
        <themekey>historical</themekey>
        <themekey>NSIDC</themekey>
        <themekey>sea ice concentration</themekey>
      </theme>
      <theme>
        <themekt>Uncontrolled</themekt>
        <themekey>time</themekey>
        <themekey>latitude</themekey>
        <themekey>longitude</themekey>
        <themekey>sea_ice_area_fraction</themekey>
        <themekey>source</themekey>
        <themekey>cell_area</themekey>
      </theme>
    </keywords>
    <accconst>None.</accconst>
    <useconst>The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.</useconst>
    <ptcontac>
      <cntinfo>
        <cntorgp>
          <cntorg>NOAA NESDIS PolarWatch</cntorg>
          <cntper>John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart</cntper>
        </cntorgp>
        <cntpos>Unknown</cntpos>
        <cntaddr>
          <addrtype>Mailing and Physical Address</addrtype>
          <address>Unknown</address>
          <address>Unknown</address>
          <city>Unknown</city>
          <state>Unknown</state>
          <postal>Unknown</postal>
          <country>Unknown</country>
        </cntaddr>
        <cntvoice>Unknown</cntvoice>
        <cntemail>walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org</cntemail>
      </cntinfo>
    </ptcontac>
    <browse>
      <browsen>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</browsen>
      <browsed>Web page to make a customized map or graph of the data</browsed>
      <browset>HTML</browset>
    </browse>
    <datacred>Contributor Name: John E. Walsh, William L. Chapman, Florence Fetterer, J. S. Stewart
Contributor Email: walsh@wx.atmos.uiuc.edu, chapman@faldo.atmos.uiuc.edu, fetterer@nsidc.org
Contributor Role: investigator, investigator, investigator, investigator
    </datacred>
  </idinfo>
  <dataqual>
    <logic>Unknown</logic>
    <complete>Unknown</complete>
    <posacc>
      <horizpa>
        <horizpar>Unknown</horizpar>
      </horizpa>
      <vertacc>
        <vertaccr>Unknown</vertaccr>
      </vertacc>
    </posacc>
    <lineage>
      <procstep>
        <procdesc>Apr 19 2020: netCDF modified via nco tools to expand dimension of the grid_cell_area variable for compatability with ERDDAP: ncap2 -s gridcell_area_2d[time,latitude,longitude]= Gridcell_Area, Jan 27 2020: downloaded zip package including netCDF file from ftp://sidads.colorado.edu/pub/DATASETS/NOAA/G10010_V2/</procdesc>
        <procdate>Unknown</procdate>
      </procstep>
    </lineage>
  </dataqual>
  <spdoinfo>
    <direct>Raster</direct>
    <rastinfo>
      <cvaltype>byte</cvaltype>
      <rasttype>Grid Cell</rasttype>
      <rowcount>240</rowcount>
      <colcount>1440</colcount>
      <vrtcount>1</vrtcount>
    </rastinfo>
  </spdoinfo>
  <spref>
    <horizsys>
      <geograph>
        <latres>0.25</latres>
        <longres>0.25</longres>
        <geogunit>Decimal degrees</geogunit>
      </geograph>
      <geodetic>
        <horizdn>D_WGS_1984</horizdn>
        <ellips>WGS_1984</ellips>
        <semiaxis>6378137.000000</semiaxis>
        <denflat>298.257224</denflat>
      </geodetic>
    </horizsys>
  </spref>
  <distinfo>
    <distrib>
            <cntinfo>
              <cntorgp>
                <cntorg>NOAA.GOV</cntorg>
                <cntper>STAR IT</cntper>
              </cntorgp>
              <cntpos>ERDDAP administrator</cntpos>
              <cntaddr>
                <addrtype>Mailing and Physical Address</addrtype>
                <address>5830 University Research CT</address>
                <city>College Park</city>
                <state>MD</state>
                <postal>20740</postal>
                <country>USA</country>
              </cntaddr>
              <cntvoice>+1 301 683 3503</cntvoice>
              <cntemail>coastwatch.info@noaa.gov</cntemail>
            </cntinfo>
    </distrib>
    <resdesc>ERDDAP, version 2.29.0: get metadata; download data; make graphs and maps.</resdesc>
    <distliab>The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.</distliab>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>.asc</formname>
          <formvern>1</formvern>
          <formspec>View OPeNDAP-style ISO-8859-1 comma-separated text. https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#ASCII_Service</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.croissant</formname>
          <formvern>1</formvern>
          <formspec>Download the dataset croissant schema. https://docs.mlcommons.org/croissant/docs/croissant-spec.html</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.csv</formname>
          <formvern>1</formvern>
          <formspec>Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). https://en.wikipedia.org/wiki/Comma-separated_values</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.csv0</formname>
          <formvern>1</formvern>
          <formspec>Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. https://en.wikipedia.org/wiki/Comma-separated_values</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.csvp</formname>
          <formvern>1</formvern>
          <formspec>Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. https://en.wikipedia.org/wiki/Comma-separated_values</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.das</formname>
          <formvern>1</formvern>
          <formspec>View the dataset&#39;s metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#Dataset_Attribute_Structure</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.dds</formname>
          <formvern>1</formvern>
          <formspec>View the dataset&#39;s structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#Dataset_Descriptor_Structure</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.dods</formname>
          <formvern>1</formvern>
          <formspec>OPeNDAP clients use this to download the data in the DODS binary format. https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#Data_Transmission</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.esriAscii</formname>
          <formvern>1</formvern>
          <formspec>Download an ISO-8859-1 ESRI ASCII file (latitude longitude data only; longitude must be all below or all above 180). https://en.wikipedia.org/wiki/Esri_grid</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.fgdc</formname>
          <formvern>1</formvern>
          <formspec>View the dataset&#39;s UTF-8 FGDC .xml metadata. https://www.fgdc.gov/standards/projects/FGDC-standards-projects/metadata/base-metadata/index_html</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.htmlTable</formname>
          <formvern>1</formvern>
          <formspec>View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. https://www.w3schools.com/html/html_tables.asp</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.iso19115</formname>
          <formvern>1</formvern>
          <formspec>View the dataset&#39;s ISO 19115/19139 UTF-8 .xml metadata using the version default for this server. https://en.wikipedia.org/wiki/Geospatial_metadata</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.iso19115_2</formname>
          <formvern>1</formvern>
          <formspec>View the dataset&#39;s ISO 19115-2/19139 UTF-8 .xml metadata. https://en.wikipedia.org/wiki/Geospatial_metadata</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.iso19115_3_2016</formname>
          <formvern>1</formvern>
          <formspec>View the dataset&#39;s ISO 19115-3:2016 UTF-8 .xml metadata. https://en.wikipedia.org/wiki/Geospatial_metadata</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.iso19139_2007</formname>
          <formvern>1</formvern>
          <formspec>View the dataset&#39;s ISO 19139:2007 UTF-8 .xml metadata. https://en.wikipedia.org/wiki/Geospatial_metadata</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.itx</formname>
          <formvern>1</formvern>
          <formspec>Download an ISO-8859-1 Igor Text File. Each axis variable and each data variable becomes a wave. https://www.wavemetrics.net/doc/igorman/II-09&#37;20Data&#37;20Import&#37;20Export.pdf</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.json</formname>
          <formvern>1</formvern>
          <formspec>View a table-like UTF-8 JSON file (missing value = &#39;null&#39;; times are ISO 8601 strings). https://www.json.org/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.jsonlCSV</formname>
          <formvern>1</formvern>
          <formspec>View a UTF-8 JSON Lines CSV file without column names (mv = &#39;null&#39;; times are ISO 8601 strings). https://jsonlines.org/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.jsonlCSV1</formname>
          <formvern>1</formvern>
          <formspec>View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = &#39;null&#39;; times are ISO 8601 strings). https://jsonlines.org/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.jsonlKVP</formname>
          <formvern>1</formvern>
          <formspec>View a UTF-8 JSON Lines file with Key:Value pairs (missing value = &#39;null&#39;; times are ISO 8601 strings). https://jsonlines.org/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.mat</formname>
          <formvern>1</formvern>
          <formspec>Download a MATLAB binary file. https://www.mathworks.com/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.nc</formname>
          <formvern>1</formvern>
          <formspec>Download a NetCDF-3 binary file with COARDS/CF/ACDD metadata. https://www.unidata.ucar.edu/software/netcdf/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.ncHeader</formname>
          <formvern>1</formvern>
          <formspec>View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. https://linux.die.net/man/1/ncdump</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.nccsv</formname>
          <formvern>1</formvern>
          <formspec>Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. https://erddap.github.io/docs/user/nccsv-1.20</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.nccsvMetadata</formname>
          <formvern>1</formvern>
          <formspec>View the dataset&#39;s metadata as the top half of a 7-bit ASCII NCCSV .csv file. https://erddap.github.io/docs/user/nccsv-1.20</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.ncml</formname>
          <formvern>1</formvern>
          <formspec>View the dataset&#39;s structure and metadata as a UTF-8 NCML .xml file. https://docs.unidata.ucar.edu/netcdf-java/current/userguide/ncml_overview.html</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.ncoJson</formname>
          <formvern>1</formvern>
          <formspec>Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. https://nco.sourceforge.net/nco.html#json</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.odvTxt</formname>
          <formvern>1</formvern>
          <formspec>Download time,latitude,longitude,otherVariables as an ODV Generic Spreadsheet File (.txt). https://odv.awi.de/en/documentation/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.parquet</formname>
          <formvern>1</formvern>
          <formspec>Download as a parquet file. Metadata contains column names (&quot;column_names&quot;) and units (&quot;column_units&quot;). https://parquet.apache.org/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.parquetWMeta</formname>
          <formvern>1</formvern>
          <formspec>Download as a parquet file with detailed metadata. https://parquet.apache.org/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.timeGaps</formname>
          <formvern>1</formvern>
          <formspec>View a UTF-8 list of gaps in the time values which are larger than the median gap. https://coastwatch.pfeg.noaa.gov/erddap/griddap/documentation.html#timeGaps</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.tsv</formname>
          <formvern>1</formvern>
          <formspec>Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). https://jkorpela.fi/TSV.html</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.tsv0</formname>
          <formvern>1</formvern>
          <formspec>Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. https://jkorpela.fi/TSV.html</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.tsvp</formname>
          <formvern>1</formvern>
          <formspec>Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. https://jkorpela.fi/TSV.html</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.wav</formname>
          <formvern>1</formvern>
          <formspec>Download a .wav audio file. All columns must be numeric and of the same type. https://en.wikipedia.org/wiki/WAV</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.xhtml</formname>
          <formvern>1</formvern>
          <formspec>View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. https://www.w3schools.com/html/html_tables.asp</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>download</function>
                </CI_OnlineResource>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.html</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for accessing metadata and downloading data.</description>
                  <function>information</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.geotif</formname>
          <formvern>1</formvern>
          <formspec>View a grayscale GeoTIFF .tif file (for latitude longitude data; longitude must be all below or all above 180). https://trac.osgeo.org/geotiff/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for making a graph or map.</description>
                  <function>graphing</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.kml</formname>
          <formvern>1</formvern>
          <formspec>View a Google Earth .kml file (for latitude, longitude data only). https://developers.google.com/kml/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for making a graph or map.</description>
                  <function>graphing</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.largePdf</formname>
          <formvern>1</formvern>
          <formspec>View a large .pdf image file with a graph or map. https://www.adobe.com/acrobat/about-adobe-pdf.html</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for making a graph or map.</description>
                  <function>graphing</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.largePng</formname>
          <formvern>1</formvern>
          <formspec>View a large .png image file with a graph or map. http://www.libpng.org/pub/png/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for making a graph or map.</description>
                  <function>graphing</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.pdf</formname>
          <formvern>1</formvern>
          <formspec>View a standard, medium-sized .pdf image file with a graph or map. https://www.adobe.com/acrobat/about-adobe-pdf.html</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for making a graph or map.</description>
                  <function>graphing</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.png</formname>
          <formvern>1</formvern>
          <formspec>View a standard, medium-sized .png image file with a graph or map. http://www.libpng.org/pub/png/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for making a graph or map.</description>
                  <function>graphing</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.smallPdf</formname>
          <formvern>1</formvern>
          <formspec>View a small .pdf image file with a graph or map. https://www.adobe.com/acrobat/about-adobe-pdf.html</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for making a graph or map.</description>
                  <function>graphing</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.smallPng</formname>
          <formvern>1</formvern>
          <formspec>View a small .png image file with a graph or map. http://www.libpng.org/pub/png/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for making a graph or map.</description>
                  <function>graphing</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <digform>
        <digtinfo>
          <formname>.transparentPng</formname>
          <formvern>1</formvern>
          <formspec>View a .png image file (just the data, without axes, landmask, or legend). http://www.libpng.org/pub/png/</formspec>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</networkr>
                <CI_OnlineResource>
                  <linkage>https://coastwatch.noaa.gov/erddap/griddap/nsidcSeaIceConc1850.graph</linkage>
                  <name>Sea Ice Extent and Concentration V2, NOAA/NSIDC, Arctic, 25km, 1850-Onward, Monthly</name>
                  <description>Web page for making a graph or map.</description>
                  <function>graphing</function>
                </CI_OnlineResource>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <fees>None</fees>
    </stdorder>
  </distinfo>
  <metainfo>
    <metd>20260513</metd>
    <metc>
            <cntinfo>
              <cntorgp>
                <cntorg>NOAA.GOV</cntorg>
                <cntper>STAR IT</cntper>
              </cntorgp>
              <cntpos>ERDDAP administrator</cntpos>
              <cntaddr>
                <addrtype>Mailing and Physical Address</addrtype>
                <address>5830 University Research CT</address>
                <city>College Park</city>
                <state>MD</state>
                <postal>20740</postal>
                <country>USA</country>
              </cntaddr>
              <cntvoice>+1 301 683 3503</cntvoice>
              <cntemail>coastwatch.info@noaa.gov</cntemail>
            </cntinfo>
    </metc>
    <metstdn>Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata</metstdn>
    <metstdv>FGDC-STD-012-2002</metstdv>
    <mettc>universal time</mettc>
    <metac>None.</metac>
    <metuc>The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.</metuc>
  </metainfo>
</metadata>
