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  <Entry_ID>noaa-lake-5469</Entry_ID>
  <Entry_Title>Alaska Lake Sediment Data and Holocene Climate Reconstructions</Entry_Title>
  <Data_Set_Citation>
    <Dataset_Creator>Anderson, L.</Dataset_Creator>
    <Dataset_Title>Alaska Lake Sediment Data and Holocene Climate Reconstructions</Dataset_Title>
    <Dataset_Release_Date>2001-05-01</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/5469</Online_Resource>
  </Data_Set_Citation>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>L.</First_Name>
    <Last_Name>Anderson</Last_Name>
  </Personnel>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Detailed_Variable>carbon/nitrogen,sediment,null,dimensionless,null,paleolimnology,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Detailed_Variable>volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,null,magnetic susceptibility measurement with ring or loop sensor,N,x10-6 units</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Detailed_Variable>organic matter,sediment,null,weight percent,null,paleolimnology,null,loss on ignition,N,500 degrees C</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Detailed_Variable>depth,null,null,centimeter,null,paleolimnology,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Detailed_Variable>delta 18O,carbonate,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,charophyte encrustation</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Detailed_Variable>delta 15N,organic matter,null,per mil AIR,null,paleolimnology,null,isotope ratio mass spectrometry,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Detailed_Variable>delta 13C,organic matter,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Detailed_Variable>density,dry sediment,null,gram per cubic centimeter,null,paleolimnology,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Detailed_Variable>organic carbon,sediment,null,weight percent,null,paleolimnology,null,carbon coulometry,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Detailed_Variable>delta 18O,cellulose,null,per mil VSMOW,null,paleolimnology,null,isotope ratio mass spectrometry,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Variable_Level_1>oxygen isotopes</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Variable_Level_1>magnetic susceptibility</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Variable_Level_1>age control</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Variable_Level_1>physical properties</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Variable_Level_1>geochemistry</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>paleolimnology</Term>
    <Variable_Level_1>lake level</Variable_Level_1>
  </Parameters>
  <ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
  <Paleo_Temporal_Coverage>
    <Paleo_Start_Date> cal yr BP</Paleo_Start_Date>
    <Paleo_Stop_Date> cal yr BP</Paleo_Stop_Date>
  </Paleo_Temporal_Coverage>
  <Data_Set_Progress>Complete</Data_Set_Progress>
  <Spatial_Coverage>
    <Southernmost_Latitude>67.66667</Southernmost_Latitude>
    <Northernmost_Latitude>68.68361</Northernmost_Latitude>
    <Westernmost_Longitude>-149.075</Westernmost_Longitude>
    <Easternmost_Longitude>-149.075</Easternmost_Longitude>
  </Spatial_Coverage>
  <Location>
    <Location_Category>Continent</Location_Category>
    <Location_Type>North America</Location_Type>
    <Location_Subregion1>United States Of America</Location_Subregion1>
    <Location_Subregion2>Alaska</Location_Subregion2>
    <Detailed_Location>Meli Lake&gt;LATITUDE 68.68361&gt;LONGITUDE -149.075</Detailed_Location>
  </Location>
  <Location>
    <Location_Category>Continent</Location_Category>
    <Location_Type>North America</Location_Type>
    <Location_Subregion1>United States Of America</Location_Subregion1>
    <Location_Subregion2>Alaska</Location_Subregion2>
    <Detailed_Location>Tangled Up Lake&gt;LATITUDE 67.66667&gt;LONGITUDE -149.075</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>Anderson, L.. 2001. Holocene Climate Inferred from Oxygen Isotope Ratios in Lake Sediments, Central Brooks Range, Alaska. Quaternary Research Vol. 55, No. 3, pp. 313-321, May 2001</Reference>
  <Summary>
    <Abstract>Analyses of sediment cores from two lakes in the central Brooks Range provide temperature and moisture balance information for the past ~8500 cal yr at century-scale resolution. Two methods of oxygen isotope analysis are used to reconstruct past changes in the effective moisture (precipitation minus evaporation) and temperature. Effective moisture is inferred from oxygen isotope ratios in sediment cellulose from Meli Lake (area ~0.13 km2, depth 19.4 m). The lake has a low watershed-to-lake-area ratio and significant evaporation relative to input. Summer temperature shifts are based on oxygen isotope analyses of endogenic calcite from Tangled Up Lake (area ~0.25 km2, depth 3.5 m). This basin has a larger watershed-to-lake-area ratio and less evaporation relative to input. Sediment oxygen isotope analyses from the two sites indicate generally more arid conditions than present prior to ~6000 cal yr B.P. Subsequently, the region became increasingly wet. Temperature variability is recorded minimally at centennial scale resolution with values that are generally cool for the past ~6700 cal yr. The timing and direction of climate variability indicated by the oxygen isotope time series from Meli and Tangled Up lakes are consistent with previously established late Holocene glacier advances at ~5000 cal yr B.P. in the central Brooks Range, and high lake-levels at Birch Lake since ~5500 cal yr B.P. This unique use of oxygen isotopes reveals both moisture balance and temperature histories at previously undetected high-resolution temporal scales for northern Alaska during the middle to late Holocene. 
          STUDY NOTES: Multi-proxy sediment core analysis from two lakes in the Brooks Range, Alaska, used by Anderson et al., 2001 for temperature and precipitation-evaporation balance reconstructions.</Abstract>
  </Summary>
  <Related_URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/meli_14c.txt</URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/meli_c-n.txt</URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/tangled_bulkdens.txt</URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/tangled.xls</URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/tangled_magsus.txt</URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/meli_magsus.txt</URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/meli_del13c.txt</URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/meli_del18o.txt</URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/tangled_14c.txt</URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/tangled_orgc.txt</URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/tangled_del13c.txt</URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/tangled_c-n.txt</URL>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/meli_loi.txt</URL>
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      <Type>GET DATA</Type>
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    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/alaska/anderson2001/tangled_del15n.txt</URL>
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  <DIF_Creation_Date>2018-12-11</DIF_Creation_Date>
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