<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<DIF xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.7.1.xsd">
  <Entry_ID>G00494</Entry_ID>
  <Entry_Title>Great Lakes Aerial Photos of Ice Conditions</Entry_Title>
  <Data_Set_Citation>
    <Dataset_Creator>Great Lakes Environmental Research Laboratory</Dataset_Creator>
    <Dataset_Title>Great Lakes Aerial Photos of Ice Conditions</Dataset_Title>
    <Dataset_Release_Date>2004-05-13</Dataset_Release_Date>
    <Dataset_Release_Place>Boulder, Colorado USA</Dataset_Release_Place>
    <Dataset_Publisher>NSIDC: National Snow and Ice Data Center</Dataset_Publisher>
    <Online_Resource>http://nsidc.org/data/g00494.html</Online_Resource>
    <Dataset_DOI>http://dx.doi.org/10.7265/N5CC0XM4</Dataset_DOI>
  </Data_Set_Citation>
  <Personnel>
    <Role>Technical Contact</Role>
    <First_Name>NSIDC</First_Name>
    <Last_Name>User Services</Last_Name>
    <Email>nsidc@nsidc.org</Email>
    <Phone>1 303 492-6199 x</Phone>
    <Fax>1 303  492-2468 x</Fax>
    <Contact_Address>
      <Address>National Snow and Ice Data Center</Address>
      <Address>CIRES, 449 UCB</Address>
      <Address>University of Colorado</Address>
      <City>Boulder</City>
      <Province_or_State>CO</Province_or_State>
      <Postal_Code>80309-0449</Postal_Code>
      <Country>USA</Country>
    </Contact_Address>
  </Personnel>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Cryosphere</Topic>
    <Term>Snow/Ice</Term>
    <Variable_Level_1>Lake Ice</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Cryosphere</Topic>
    <Term>Snow/Ice</Term>
    <Variable_Level_1>River Ice</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Spectral/Engineering</Topic>
    <Term>Visible Wavelengths</Term>
    <Variable_Level_1>Visible Imagery</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Terrestrial Hydrosphere</Topic>
    <Term>Snow/Ice</Term>
    <Variable_Level_1>Lake Ice</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Terrestrial Hydrosphere</Topic>
    <Term>Snow/Ice</Term>
    <Variable_Level_1>River Ice</Variable_Level_1>
  </Parameters>
  <ISO_Topic_Category>Inland Waters</ISO_Topic_Category>
  <Keyword>Aerial Photography</Keyword>
  <Keyword>Climatology</Keyword>
  <Keyword>Freshwater Ice</Keyword>
  <Keyword>Great Lakes</Keyword>
  <Keyword>IDN_NODE GSFC/NSIDC</Keyword>
  <Keyword>Lake Ice</Keyword>
  <Keyword>River Ice</Keyword>
  <Keyword>Surface</Keyword>
  <Sensor_Name>
    <Short_Name>CAMERAS</Short_Name>
  </Sensor_Name>
  <Source_Name>
    <Short_Name>AIRCRAFT</Short_Name>
  </Source_Name>
  <Temporal_Coverage>
    <Start_Date>1963-01-01</Start_Date>
    <Stop_Date>1973-01-01</Stop_Date>
  </Temporal_Coverage>
  <Data_Set_Progress>complete</Data_Set_Progress>
  <Spatial_Coverage>
    <Southernmost_Latitude>41</Southernmost_Latitude>
    <Northernmost_Latitude>49</Northernmost_Latitude>
    <Westernmost_Longitude>-93</Westernmost_Longitude>
    <Easternmost_Longitude>-76</Easternmost_Longitude>
  </Spatial_Coverage>
  <Location>
    <Location_Category>CONTINENT</Location_Category>
    <Location_Type>NORTH AMERICA</Location_Type>
  </Location>
  <Location>
    <Location_Category>CONTINENT</Location_Category>
    <Location_Type>NORTH AMERICA</Location_Type>
    <Location_Subregion1>UNITED STATES OF AMERICA</Location_Subregion1>
  </Location>
  <Location>
    <Location_Category>CONTINENT</Location_Category>
    <Location_Type>NORTH AMERICA</Location_Type>
    <Location_Subregion1>UNITED STATES OF AMERICA</Location_Subregion1>
    <Location_Subregion2>GREAT LAKES</Location_Subregion2>
    <Detailed_Location>GREAT LAKES</Detailed_Location>
  </Location>
  <Location>
    <Location_Category>GEOGRAPHIC REGION</Location_Category>
    <Location_Type>MID-LATITUDE</Location_Type>
  </Location>
  <Data_Set_Language>English</Data_Set_Language>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>NSIDC</Short_Name>
      <Long_Name>National Snow and Ice Data Center</Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>http://nsidc.org</Data_Center_URL>
    <Personnel>
      <Role>Data Center Contact</Role>
      <First_Name>NSIDC</First_Name>
      <Last_Name>User Services</Last_Name>
      <Email>nsidc@nsidc.org</Email>
      <Phone>1 303 492-6199 </Phone>
      <Fax>1 303  492-2468 </Fax>
      <Contact_Address>
        <Address>National Snow and Ice Data Center</Address>
        <Address>CIRES, 449 UCB</Address>
        <Address>University of Colorado</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80309-0449</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>NSIDC_NOAA</Short_Name>
      <Long_Name>NSIDC National Oceanic and Atmospheric Administration</Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>http://nsidc.org/noaa/</Data_Center_URL>
    <Personnel>
      <Role>Data Center Contact</Role>
      <First_Name>NSIDC NOAA</First_Name>
      <Last_Name>User Services</Last_Name>
      <Email>nsidc@nsidc.org</Email>
      <Phone>1 303 492-6199 </Phone>
      <Fax>1 303  492-2468 </Fax>
      <Contact_Address>
        <Address>National Snow and Ice Data Center</Address>
        <Address>CIRES, 449 UCB</Address>
        <Address>University of Colorado</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80309-0449</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>NSIDC_ARC</Short_Name>
      <Long_Name>NSIDC Roger G. Barry Archives and Resource Center </Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>http://nsidc.org/rocs/</Data_Center_URL>
    <Personnel>
      <Role>Data Center Contact</Role>
      <First_Name>NSIDC ARC</First_Name>
      <Last_Name>User Services</Last_Name>
      <Email>nsidc@nsidc.org</Email>
      <Phone>1 303 492-6199 x</Phone>
      <Fax>1 303  492-2468 x</Fax>
      <Contact_Address>
        <Address>National Snow and Ice Data Center CIRES, 449 UCB University of Colorado</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80309-0449</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Distribution>
    <Distribution_Media>Negatives</Distribution_Media>
  </Distribution>
  <Summary>The collection consists of approximately 50,000 high-quality negatives and transparencies showing ice cover impact on navigation or hydroelectric operation from 1963 to 1973. Coverage is not systematic or complete. Indexing has not been undertaken, but latitude and longitude of flight line begin and end points are logged. Photos from many flights have been made into photomosaics that can be used on-site as a gross index to the 9-inch roll negatives. Photographic flights were carried out by a U.S. Air Force photomapping wing, using flight lines selected by NOAA Lake Survey Center (now Great Lakes Environmental Research Laboratory).

Custom photo products may be ordered and the collection is available for on-site use by appointment; limited searching of the collection is offered to fulfill off-site requests.</Summary>
  <Related_URL>
    <URL_Content_Type>
      <Type>VIEW PROJECT HOME PAGE</Type>
    </URL_Content_Type>
    <URL>http://www.glerl.noaa.gov/data/ice/atlas/</URL>
    <Description>NOAA Great Lakes Ice Atlas</Description>
  </Related_URL>
  <IDN_Node>
    <Short_Name>USA/NOAA</Short_Name>
  </IDN_Node>
  <Metadata_Name>CEOS IDN DIF</Metadata_Name>
  <Metadata_Version>9.7</Metadata_Version>
  <DIF_Creation_Date>2004-05-13</DIF_Creation_Date>
  <Last_DIF_Revision_Date>2013-03-25</Last_DIF_Revision_Date>
  <DIF_Revision_History>Fixed broken access data links.</DIF_Revision_History>
</DIF>
