<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_v9.8.4.xsd">
  <Entry_ID>noaa-icecore-2474</Entry_ID>
  <Entry_Title>Penny Ice Cap - Conductivity, Isotope, and Chemistry Data</Entry_Title>
  <Data_Set_Citation>
    <Dataset_Creator>Fisher, D.A.; Koerner, R.M.; Bourgeois, J.C.; Zielinski, G.A.; Wake, C.; Hammer, C.U.; Clausen, H.B.; Gundestrup, N.; Johnsen, S.J.; Goto-Azuma, K.; Hondoh, T.; Blake, E.; Gerasimoff, M.</Dataset_Creator>
    <Dataset_Title>Penny Ice Cap - Conductivity, Isotope, and Chemistry Data</Dataset_Title>
    <Dataset_Release_Date>2003-12-01</Dataset_Release_Date>
    <Dataset_Publisher>NCDC-Paleoclimatology</Dataset_Publisher>
    <Data_Presentation_Form>ONLINE Files</Data_Presentation_Form>
    <Dataset_DOI>Pending</Dataset_DOI>
    <Online_Resource>https://www.ncdc.noaa.gov/paleo/study/2474</Online_Resource>
  </Data_Set_Citation>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>D.A.</First_Name>
    <Last_Name>Fisher</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>R.M.</First_Name>
    <Last_Name>Koerner</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>J.C.</First_Name>
    <Last_Name>Bourgeois</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>G.A.</First_Name>
    <Last_Name>Zielinski</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>C.</First_Name>
    <Last_Name>Wake</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>C.U.</First_Name>
    <Last_Name>Hammer</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>H.B.</First_Name>
    <Last_Name>Clausen</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>N.</First_Name>
    <Last_Name>Gundestrup</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>S.J.</First_Name>
    <Last_Name>Johnsen</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>K.</First_Name>
    <Last_Name>Goto-Azuma</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>T.</First_Name>
    <Last_Name>Hondoh</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>E.</First_Name>
    <Last_Name>Blake</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>M.</First_Name>
    <Last_Name>Gerasimoff</Last_Name>
  </Personnel>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice cores</Term>
    <Detailed_Variable>calcium,bulk ice,null,parts per billion,null,ice cores,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice cores</Term>
    <Detailed_Variable>depth at sample start,null,null,meter,null,ice cores,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice cores</Term>
    <Detailed_Variable>sulfate,bulk ice,null,unspecified unit,null,ice cores,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice cores</Term>
    <Detailed_Variable>delta 18O,bulk ice,null,per mil SMOW,null,ice cores,averaged,isotope ratio mass spectrometry,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice cores</Term>
    <Detailed_Variable>nitrate,bulk ice,null,unspecified unit,null,ice cores,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice cores</Term>
    <Detailed_Variable>delta 18O,bulk ice,null,per mil SMOW,null,ice cores,null,isotope ratio mass spectrometry,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice cores</Term>
    <Detailed_Variable>depth at sample end,null,null,meter,null,ice cores,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice cores</Term>
    <Detailed_Variable>chloride,bulk ice,null,unspecified unit,null,ice cores,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice cores</Term>
    <Detailed_Variable>sample identification,null,null,null,null,ice cores,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice cores</Term>
    <Detailed_Variable>depth,null,null,meter,null,ice cores,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice cores</Term>
    <Detailed_Variable>methanesulfonic acid,bulk ice,null,unspecified unit,null,ice cores,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice cores</Term>
    <Detailed_Variable>electrical conductivity,bulk ice,null,unspecified unit,null,ice cores,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice core</Term>
    <Variable_Level_1>physical properties</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice core</Term>
    <Variable_Level_1>oxygen isotopes</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice core</Term>
    <Variable_Level_1>chemistry</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>ice core</Term>
    <Variable_Level_1>instrumental data</Variable_Level_1>
  </Parameters>
  <ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
  <Paleo_Temporal_Coverage>
    <Paleo_Start_Date>11750 cal yr BP</Paleo_Start_Date>
    <Paleo_Stop_Date>-45 cal yr BP</Paleo_Stop_Date>
  </Paleo_Temporal_Coverage>
  <Data_Set_Progress>Complete</Data_Set_Progress>
  <Spatial_Coverage>
    <Southernmost_Latitude>67.25</Southernmost_Latitude>
    <Northernmost_Latitude>67.25</Northernmost_Latitude>
    <Westernmost_Longitude>-66.75</Westernmost_Longitude>
    <Easternmost_Longitude>-66.75</Easternmost_Longitude>
    <Minimum_Altitude>2100</Minimum_Altitude>
    <Maximum_Altitude>2100</Maximum_Altitude>
  </Spatial_Coverage>
  <Location>
    <Location_Category>Continent</Location_Category>
    <Location_Type>North America</Location_Type>
    <Location_Subregion1>Canada</Location_Subregion1>
    <Detailed_Location>Penny Ice Cap&gt;LATITUDE 67.25&gt;LONGITUDE -66.75</Detailed_Location>
  </Location>
  <Access_Constraints>None</Access_Constraints>
  <Use_Constraints>Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.</Use_Constraints>
  <Data_Set_Language>English</Data_Set_Language>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>DOC/NOAA/NESDIS/NCEI</Short_Name>
      <Long_Name>National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce </Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>https://www.ncdc.noaa.gov/data-access/paleoclimatology-data</Data_Center_URL>
    <Personnel>
      <Role>DATA Center Contact</Role>
      <First_Name>Bruce</First_Name>
      <Last_Name>Bauer</Last_Name>
      <Email>bruce.a.bauer@noaa.gov</Email>
      <Email>paleo@noaa.gov</Email>
      <Phone>303-497-6280</Phone>
      <Fax>303-497-6513</Fax>
      <Contact_Address>
        <Address>325 Broadway, E/NE31</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80305-3328</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Distribution>
    <Distribution_Media>online</Distribution_Media>
    <Distribution_Format>ASCII</Distribution_Format>
  </Distribution>
  <Reference>Fisher, D.A., R.M. Koerner, J.C. Bourgeois, G. Zielinski, C. Wake, C.U. Hammer, H.B. Clausen, N. Gundestrup, S. Johnsen, K. Goto-Azuma, T. Hondoh, E. Blake, and M. Gerasimoff. 1998. Penny ice cap cores, Baffin Island, Canada, and the Wisconsinan Foxe Dome connection: Two states of Hudson Bay ice cover. Science 279:692-695.</Reference>
  <Summary>
    <Abstract>Records of past temperature, precipitation, atmospheric trace gases, and other aspects of climate and environment derived from ice cores drilled on glaciers and ice caps around the world.  Parameter keywords describe what was measured in this data set.  Additional summary information can be found in the abstracts of papers listed in the data set citations.
 
          STUDY NOTES: Snowpits were excavated in 1994 and 1995. 

The 333.78m. P95 core was drilled to the bed in April-May 1995.
The 89m. P95.2 core was drilled adjacent to the P95 core (2.5 m. away) 
for evaluation of noise in the record. The d18O correlation between 
the two cores is .80.  

The 177.91m. P96 core also reached the bed.  It is located
approximately 16 km. from P95.  The P95-P96 correlation of d18O 
on 40-year segments is .3 to .5.

ADDITIONAL REFERENCES:
Fisher, D.A., R.M. Koerner, G.A. Zielinski, C.P. Wake, C.M. Zdanowicz, 
J.C. Bourgeois, P.A. Mayewski and N. Grummet, 2002,
The effects of flowline length evolution on chemistry-d18O profiles from 
Penny Ice Cap, Baffin Island, Canada
Annals of Glaciology, Volume 35, pp. 150-156.

Fisher, D. A., (2002).   High-resolution multiproxy climatic records 
from ice cores, tree-rings, corals and documentary sources using eigenvector 
techniques and maps: assessment of recovered signal and errors.
Holocene,  vol. 12, no. 4, pp. 401-420 

Grumet, N.S., Wake, C.P., Zielinski, G.A., Fisher, D.A. and Jacobs, J.D. 1998.  
Preservation of glaciochemical time-series in snow and ice records from the 
percolation zone of the Penny Ice Cap, Baffin Island. 
Geophysical Research Letters 25, 357-360.

Goto-Azuma, K., R.M. Koerner, and D.A. Fisher, 2002,
An ice-core record over the last two centuries from Penny Ice Cap, 
Baffin Island, Canada
Annals of Glaciology, Volume 35, pp. 29-35.</Abstract>
  </Summary>
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