noaa-ocean-25430 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 2018-12-11 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Bulk sediment nitrogen isotopes from the northern Peru Margin over the last 25 kyr 2018-10-12 publication noaa-ocean-25430 NCEI DSI 1200_01 Bova, S.C. originator Bova, S.C. author Herbert, T.D. originator Herbert, T.D. author Altabet, M.A. originator Altabet, M.A. 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 Paleoceanography. The data include parameters of paleoceanography with a geographic location of Eastern Pacific Ocean. The time period coverage is from 28238 to 1102 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. Records of past climate and ocean circulation derived from marine sediments. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset 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-ocean.png Paleoclimatology - Paleoceanography PNG Earth Science > Paleoclimate > Ocean/Lake Records Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records 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 > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleocean > carbon isotopes earth science > paleoclimate > paleocean > nitrogen isotopes 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 Ocean > Pacific Ocean > Eastern Pacific Ocean> KNR195-5 CDH41 > LATITUDE -1.265667 > LONGITUDE -89.698 Ocean > Pacific Ocean > Eastern Pacific Ocean> KNR195-5 CDH26 > LATITUDE -3.986 > LONGITUDE -81.308667 Ocean > Pacific Ocean > Eastern Pacific Ocean> KNR195-5 GGC43 > LATITUDE -1.252167 > LONGITUDE -89.6845 Ocean > Pacific Ocean > Eastern Pacific Ocean> KNR195-5 CDH23 > LATITUDE -3.749167 > LONGITUDE -81.134167 place otherRestrictions Cite as: Bova, S.C.; Herbert, T.D.; Altabet, M.A. (2018-10-12): NOAA/WDS Paleoclimatology - Bulk sediment nitrogen isotopes from the northern Peru Margin over the last 25 kyr. [indicate subset used]. NOAA National Centers for Environmental Information. https://www.ncdc.noaa.gov/paleo/study/25430. 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. Ventilation of northern and southern sources of aged carbon in the eastern equatorial Pacific during the Younger Dryas rise in atmospheric CO2 2018 publication Bova, S.C., Herbert, T.D., and Altabet M.A. author Paleoceanography and Paleoclimatology publisher crossReference sciencePaper eng; USA geoscientificInformation Date Range: 28238 cal yr BP to 1102 cal yr BP; -89.698 -81.134167 -3.986 -1.252167 -26288 848 STUDY NOTES: Provided Keywords: deglaciation, upwelling, Younger Dryas ABSTRACT SUPPLIED BY ORIGINATOR: Atmospheric carbon dioxide (CO2) levels rose by ~90 ppmv during the last deglaciation, but the source of this carbon remains unknown. One popular hypothesis suggests carbon accumulated in the deep Southern Ocean, becoming increasingly radiocarbon (14C)-depleted during the last glacial period, and was released into Antarctic Intermediate Water (AAIW) and, subsequently, the atmosphere during deglaciation. Detection of extremely 14C-deplete carbon in the intermediate-depth tropical oceans during periods of atmospheric CO2 rise was initially considered the "smoking gun" for the hypothesis, but attempts to reproduce the anomalies closer to the Southern Ocean source have largely failed. Here, we present new 14C records from four cores recovered at intermediate depths in the eastern equatorial Pacific (EEP). In the context of additional geochemical records, including benthic foraminiferal stable isotopes and sedimentary nitrogen isotopes, we demonstrate that the extreme 14C anomalies observed during the last deglaciation do not reflect the radiocarbon content of AAIW. We show that, although AAIW likely transported modestly 14C-deplete carbon to the EEP subsurface, the extreme 14C signatures might reflect a distinct source of aged carbon arriving from the north, suggesting the North Pacific helped transport deep ocean carbon to the atmosphere during the last deglaciation. In the EEP, additional local hydrothermal inputs of 14C-free carbon near the Galapagos Islands magnified the already low-14C signatures. Finally, regardless of arrival route (North/South Pacific or hydrothermal), 14C-deplete carbon was released from the EEP subsurface during a late deglacial pulse of renewed upwelling, likely contributing to the Younger Dryas rise in atmospheric CO2. 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Native Format(s) https://data.nodc.noaa.gov/cgi-bin/iso?id=noaa-ocean-25430 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/25430 HTTPS Web Browser NCEI Study Page Study page with dataset access information. search https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/paleoceanography HTTPS Information NCEI Paleoceanography Page General information for this data type. information https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bova2018/bova2018-cdh23-14c.txt HTTPS Download /contributions_by_author/bova2018/bova2018-cdh23-14c.txt Original Data and Full Metadata download https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bova2018/bova2018-cdh26-d15n.txt HTTPS Download /contributions_by_author/bova2018/bova2018-cdh26-d15n.txt Original Data and Full Metadata download https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bova2018/bova2018-cdh41-14c.txt HTTPS Download /contributions_by_author/bova2018/bova2018-cdh41-14c.txt Original Data and Full Metadata download https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bova2018/bova2018-cdh26-14c.txt HTTPS Download /contributions_by_author/bova2018/bova2018-cdh26-14c.txt Original Data and Full Metadata download https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bova2018/bova2018-ggc43-14c.txt HTTPS Download /contributions_by_author/bova2018/bova2018-ggc43-14c.txt Original Data and Full Metadata download asNeeded This metadata record was translated from DIF using dif-9x-to-iso-19115-2.xsl Version: 2018-10-25