noaa-other-10293 eng; USA utf8 dataset Bauer, Bruce DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce +1 303-497-6280 +1 303-497-6513 325 Broadway, E/CC23 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2019-03-27 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Central Arctic Ocean 150KYr Amino Acid Racemization Data 2011-01-22 publication noaa-other-10293 NCEI DSI 1200_01 Kaufman, D.S. originator Kaufman, D.S. author Polyak, L. originator Polyak, L. author Adler, R. originator Adler, R. author Channell, J.E.T. originator Channell, J.E.T. author Xuan, C. originator Xuan, C. author NOAA National Centers for Environmental Information publisher tableDigital This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Other Collections. The data include parameters of others with a geographic location of Arctic Ocean. The time period coverage is from 222000 to 1000 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. Data of past climate and environment derived from unusual proxy evidence. 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. completed Bauer, Bruce DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce +1 303-497-6280 +1 303-497-6513 325 Broadway, E/CC23 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncdc.noaa.gov/c/images/pc-default-other.png Paleoclimatology - Other Collections PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Paleoclimate Reconstructions theme Global Change Master Directory (GCMD) Science Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher earth science > paleoclimate > others theme Global Change Master Directory (GCMD) Science Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Arctic theme Ocean > Arctic Ocean> 88AR-P5 > LATITUDE 74.6225 > LONGITUDE -157.884 Ocean > Arctic Ocean> HLY0503-11MC-2 > LATITUDE 83.1283 > LONGITUDE -174.693 Ocean > Arctic Ocean> 96/12-1PC > LATITUDE 87.0983 > LONGITUDE -144.773 Ocean > Arctic Ocean> HLY0503-8JPC > LATITUDE 79.5933 > LONGITUDE -172.502 Ocean > Arctic Ocean> HLY0503-10MC-2 > LATITUDE 81.2283 > LONGITUDE -177.216 place otherRestrictions Cite as: Kaufman, D.S.; Polyak, L.; Adler, R.; Channell, J.E.T.; Xuan, C. (2011-01-22): NOAA/WDS Paleoclimatology - Central Arctic Ocean 150KYr Amino Acid Racemization Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://www.ncdc.noaa.gov/paleo/study/10293. Accessed [date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. otherRestrictions None otherRestrictions 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. eng; USA geoscientificInformation Date Range: 222000 cal yr BP to 1000 cal yr BP; -177.216 -144.773 74.6225 87.0983 -220050 950 STUDY NOTES: Amino acid racemization data on N. pachyderma samples from marine sediment cores in the central Arctic Ocean. D/L and concentration for aspartic acid, glutamic acid, and serine in Neogloboquadrina pachyderma from sediment cores from Lomonosove, Mendeleev, and Northwind ridges, central Arctic Ocean. Lab: Northern Arizona University Lab PI: Kaufman, D.S. Preparation date: Nov 2006 through Jan 2008 Pretreatment: Sieve >150 µm, repeated sonication, 3% pyroxide for 2 hr AA fraction = AMINO FRACTION Hydrolysis procedure: 6 hr at 110°C in 7 µL of 6 M HCl under N2 Bleach: No Analytical method: RPLC Instrumental programming: Concentration is based on internal calibration with L-hArg Area or height ratio: Height Blank corrections: none Response factors: none Data screening criteria: Rejection criteria: 1 = L-Ser/L-Asp > 0.8; 2 = Asp or Glu D/L fall off the covarience trend; 3 = Asp or Glu D/L > ± 2s beyond group mean Collector: Polynak, Leoind, Ohio State University ABSTRACT SUPPLIED BY ORIGINATOR: The long-term rate of racemization for amino acids preserved in planktonic foraminifera was determined by using independently dated sediment cores from the Arctic Ocean. The racemization rates for aspartic acid (Asp) and glutamic acid (Glu) in the common taxon, Neogloboquadrina pachyderma, were calibrated for the last 150 ka using 14C ages and the emerging Quaternary chronostratigraphy of Arctic Ocean sediments. An analysis of errors indicates realistic age uncertainties of about ±12% for Asp and ±17% for Glu. Fifty individual tests are sufficient to analyze multiple subsamples, identify outliers, and derive robust sample mean values. The new age equation can be applied to verify and refine age models for sediment cores elsewhere in the Arctic Ocean, a critical region for understanding the dynamics of global climate change. 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Native Format(s) https://data.nodc.noaa.gov/cgi-bin/iso?id=noaa-other-10293 HTTPS Landing Page NCEI landing page for this dataset Dataset landing page with general information and links to access the data. information https://www.ncdc.noaa.gov/paleo/study/10293 HTTPS Web Browser NCEI Study Page Study page with dataset access information. search https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/other-collections HTTPS Information NCEI Other Collections Page General information for this data type. information https://www1.ncdc.noaa.gov/pub/data/paleo/aar/kaufman2008arctic/kaufman2008arctic.txt HTTP Download NCEI Direct Download Direct download links for dataset files. download https://www1.ncdc.noaa.gov/pub/data/paleo/aar/kaufman2008arctic/kaufman2008arctic.xls HTTP Download NCEI Direct Download Direct download links for dataset files. download asNeeded This metadata record was translated from DIF using dif-9x-to-iso-19115-2.xsl Version: 2018-10-25