<?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>ARCSS008</Entry_ID>
  <Entry_Title>Greenland Summit Ice Cores</Entry_Title>
  <Data_Set_Citation>
    <Dataset_Creator>NSIDC and WDC for Paleoclimatology</Dataset_Creator>
    <Dataset_Title>Greenland Summit Ice Cores</Dataset_Title>
    <Dataset_Release_Date>1998-01-01</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/arcss008.html</Online_Resource>
  </Data_Set_Citation>
  <Personnel>
    <Role>Technical Contact</Role>
    <First_Name>WDC For Paleoclimatology, Boulder</First_Name>
    <Last_Name>WDC For Paleoclimatology, Boulder</Last_Name>
    <Email>paleo@ngdc.noaa.gov</Email>
    <Phone>1 303 497-6160 </Phone>
    <Fax>1 303  497-6513 </Fax>
    <Contact_Address>
      <Address>World Data Center for Paleoclimatology, Boulder</Address>
      <Address>NOAA/NGDC Code E/GCx3</Address>
      <Address>325 Broadway</Address>
      <City>Boulder</City>
      <Province_or_State>CO</Province_or_State>
      <Postal_Code>80303</Postal_Code>
    </Contact_Address>
  </Personnel>
  <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>Atmosphere</Topic>
    <Term>Aerosols</Term>
    <Variable_Level_1>Dust/Ash/Smoke</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Atmosphere</Topic>
    <Term>Atmospheric Pressure</Term>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Atmosphere</Topic>
    <Term>Atmospheric Temperature</Term>
    <Variable_Level_1>Air Temperature</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Atmosphere</Topic>
    <Term>Atmospheric Water Vapor</Term>
    <Variable_Level_1>Humidity</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Atmosphere</Topic>
    <Term>Atmospheric Water Vapor</Term>
    <Variable_Level_1>Water Vapor</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Atmosphere</Topic>
    <Term>Atmospheric Winds</Term>
    <Variable_Level_1>Surface Winds</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Atmosphere</Topic>
    <Term>Atmospheric Winds</Term>
    <Variable_Level_1>Upper Level Winds</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Cryosphere</Topic>
    <Term>Glaciers/Ice Sheets</Term>
    <Variable_Level_1>Ice Sheets</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Paleoclimate</Topic>
    <Term>Ice Core Records</Term>
    <Variable_Level_1>Carbon Dioxide</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Paleoclimate</Topic>
    <Term>Ice Core Records</Term>
    <Variable_Level_1>Ice Core Air Bubbles</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Paleoclimate</Topic>
    <Term>Ice Core Records</Term>
    <Variable_Level_1>Ions</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Paleoclimate</Topic>
    <Term>Ice Core Records</Term>
    <Variable_Level_1>Isotopes</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Paleoclimate</Topic>
    <Term>Ice Core Records</Term>
    <Variable_Level_1>Methane</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Paleoclimate</Topic>
    <Term>Ice Core Records</Term>
    <Variable_Level_1>Nitrous Oxide</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Paleoclimate</Topic>
    <Term>Ice Core Records</Term>
    <Variable_Level_1>Particulate Matter</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Paleoclimate</Topic>
    <Term>Ice Core Records</Term>
    <Variable_Level_1>Volcanic Deposits</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Paleoclimate</Topic>
    <Term>Land Records</Term>
    <Variable_Level_1>Glaciation</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Terrestrial Hydrosphere</Topic>
    <Term>Glaciers/Ice Sheets</Term>
    <Variable_Level_1>Ice Sheets</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Terrestrial Hydrosphere</Topic>
    <Term>Water Quality/Water Chemistry</Term>
    <Variable_Level_1>Stable Isotopes</Variable_Level_1>
  </Parameters>
  <Keyword>AWS Climate Data</Keyword>
  <Keyword>CH4</Keyword>
  <Keyword>CO2</Keyword>
  <Keyword>Cosmogenic Isotopes</Keyword>
  <Keyword>Electrical Conductivity</Keyword>
  <Keyword>GISP2</Keyword>
  <Keyword>GRIP</Keyword>
  <Keyword>Ice Cores</Keyword>
  <Keyword>Ice Core Stratigraphy</Keyword>
  <Keyword>Oxygen-18</Keyword>
  <Keyword>Paleoclimate</Keyword>
  <Keyword>PALEOENVIRONMENT</Keyword>
  <Keyword>Radiocarbon</Keyword>
  <Keyword>Stable Isotopes</Keyword>
  <Keyword>Weather Records</Keyword>
  <Sensor_Name>
    <Short_Name>CORING DEVICES</Short_Name>
  </Sensor_Name>
  <Sensor_Name>
    <Short_Name>ICE AUGERS</Short_Name>
  </Sensor_Name>
  <Source_Name>
    <Short_Name>GROUND-BASED OBSERVATIONS</Short_Name>
  </Source_Name>
  <Source_Name>
    <Short_Name>GROUND STATIONS</Short_Name>
  </Source_Name>
  <Source_Name>
    <Short_Name>WEATHER STATIONS</Short_Name>
  </Source_Name>
  <Temporal_Coverage>
    <Start_Date>1989-01-01</Start_Date>
    <Stop_Date>1994-12-31</Stop_Date>
  </Temporal_Coverage>
  <Location>
    <Location_Category>CONTINENT</Location_Category>
    <Location_Type>NORTH AMERICA</Location_Type>
    <Location_Subregion1>GREENLAND</Location_Subregion1>
  </Location>
  <Data_Resolution>
    <Vertical_Resolution>1 cm</Vertical_Resolution>
  </Data_Resolution>
  <Project>
    <Short_Name>ARCSS/GISP2</Short_Name>
    <Long_Name>Arctic System Science/Greenland Ice Sheet Project 2</Long_Name>
  </Project>
  <Project>
    <Short_Name>GISP2</Short_Name>
    <Long_Name>Greenland Ice Sheet Project II</Long_Name>
  </Project>
  <Project>
    <Short_Name>GRIP</Short_Name>
    <Long_Name>Greenland Ice Core Project</Long_Name>
  </Project>
  <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_ARCSS</Short_Name>
      <Long_Name>NSIDC Arctic System Science Data Coordination Center</Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>http://nsidc.org/arcss/</Data_Center_URL>
    <Personnel>
      <Role>Data Center Contact</Role>
      <First_Name>NSIDC ARCSS</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>
  <Distribution>
    <Distribution_Media>CD-ROM</Distribution_Media>
    <Distribution_Size>161 MB</Distribution_Size>
    <Distribution_Format>ASCII Text</Distribution_Format>
  </Distribution>
  <Reference>See extensive bibliography at:  http://www.ngdc.noaa.gov/paleo/icecore/greenland/summit/document/biblio.ht</Reference>
  <Summary>From 1989 to 1994, the U.S. and European scientific communities supported a bold undertaking to acquire an extensive paleoclimate record for the Northern Hemisphere. These efforts, termed the Greenland Ice Core Project (GRIP) and Greenland Ice Sheet Project Two (GISP2), acquired deep ice cores from sites on and near the Greenland summit. The GISP2 (US) site was located at 72 degrees 36 minutes N, 38 degrees 30 minutes W. The GRIP (European) site was located at 72 degrees 35 minutes N, 37 degrees 38 minutes W. A wide range of environmental and physical parameters were recorded from the cores. The data types are listed below:

-  Air Mass Trajectories (GISP2)

-  Chemistry (GISP2, GRIP)

- Climatological Data (GISP2)

-  Cosmogenic Isotopes (GISP2)

-  Dust (GISP2)

- Electrical Conductivity (GISP2, GRIP)

-  Gas Concentrations in Air Bubbles (GISP2, GRIP)

-  Physical Properties and Ice Core Stratigraphy (GISP2, GRIP)

-  Stable Isotopes (GISP2, GRIP)

-  Time scales (GISP2, GRIP)

The GRIP and GISP2 data were acquired as a part of a multi-institutional effort involving the GISP2 Science Management Office (SMO) at the University of New Hampshire, the Arctic System Science (ARCSS) Data Coordination Center (ADCC) at the National Snow and Ice Data Center (NSIDC), the International Ice Core Data Cooperative (IICDC) at the Institute of Arctic and Alpine Research (INSTAAR), and the World Data Center (WDC) for Paleoclimatology, Boulder at the NOAA National Geophysical Data Center (NGDC).</Summary>
  <Related_URL>
    <URL_Content_Type>
      <Type>VIEW RELATED INFORMATION</Type>
    </URL_Content_Type>
    <URL>http://www.ncdc.noaa.gov/paleo/icecore/greenland/summit/index.html</URL>
    <Description>The Greenland Summit Ice Cores CD-ROM contents page at NGDC</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>1998-01-01</DIF_Creation_Date>
  <Last_DIF_Revision_Date>2013-03-12</Last_DIF_Revision_Date>
  <DIF_Revision_History> Fixed the summary and removed reference to NSIDC since this data set is now brokered.</DIF_Revision_History>
</DIF>
