noaa-icecore-9973 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2025-01-14 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - GISP2 Ice Core 1000 Year Ar-N2 Isotope Temperature Reconstruction 2010-06-28 publication doi:10.25921/jxcs-rp23 noaa-icecore-9973 NCEI DSI 1200_02 NCEI DSI 1200_01 Kobashi, T. originator Kobashi, T. author Severinghaus, J. originator Severinghaus, J. author Barnola, J.-M. originator Barnola, J.-M. author Kawamura, K. originator Kawamura, K. author Carter, T. originator Carter, T. author Nakaegawa, T. originator Nakaegawa, T. 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 Ice Core. The data include parameters of climate reconstructions|ice cores with a geographic location of Greenland. The time period coverage is from 990 to 0 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 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 dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-icecore.png Paleoclimatology - Ice Core PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Ice Core Records Earth Science > Paleoclimate > Ice Core Records theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian earth science > paleoclimate > climate reconstructions|ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > climate reconstructions|ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > climate reconstructions|ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > climate reconstructions|ice cores earth science > paleoclimate > climate reconstructions|ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > ice core > reconstruction earth science > paleoclimate > ice core > nitrogen isotopes theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Air Temperature Reconstruction Arctic decadal resolution theme What: surface temperature; Material: delta 15N excess What: delta 15N; Material: bulk atmosphere What: number of samples; Material: null What: delta Ar/N2; Material: bulk atmosphere What: delta 40Ar; Material: bulk atmosphere What: delta Ar/N2; Material: bulk atmosphere What: surface temperature; Material: delta 15N excess What: delta 40Ar; Material: bulk atmosphere What: depth; Material: null What: delta 15N; Material: bulk atmosphere What: age; Material: null What: surface temperature; Material: delta 15N excess What: air content; Material: bulk ice theme Paleoenvironmental Standard Terms (PaST) Thesaurus NOAA National Centers for Environmental Information https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus PaST Thesaurus information publisher Continent > North America > Greenland > GISP2 > LATITUDE 72.583333 > LONGITUDE -38.466667 place DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Cite as: Kobashi, T.; Severinghaus, J.; Barnola, J.-M.; Kawamura, K.; Carter, T.; Nakaegawa, T. (2010-06-28): NOAA/WDS Paleoclimatology - GISP2 Ice Core 1000 Year Ar-N2 Isotope Temperature Reconstruction. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/jxcs-rp23. 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. Persistent multi-decadal Greenland temperature fluctuation through the last millennium 2009 publication Kobashi, T., J.P. Severinghaus, J.-M. Barnola, K. Kawamura, T. Carter, and T. Nakaegawa author Climatic Change publisher https://doi.org/10.1007/s10584-009-9689-9 HTTPS Web Browser Associated Reference published 2009 Kobashi, T., J.P. Severinghaus, J.-M. Barnola, K. Kawamura, T. Carter, and T. Nakaegawa, 2009: Persistent multi-decadal Greenland temperature fluctuation through the last millennium. Climatic Change, 100, 733-756, 10.1007/s10584-009-9689-9 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 960 CE to 1950 CE; Date Range: 990 cal yr BP to 0 cal yr BP; -38.466667 -38.466667 72.583333 72.583333 Study Coordinates 72.583333 -38.466667 960 1950 STUDY NOTES: Nitrogen and Argon isotope data from air bubbles in the GISP2 ice core, and 1000 year temperature reconstruction based on the gas isotope data. Nitrogen (15N/14N) and argon (40Ar/36Ar) isotopic ratios were measured, and a firn air separation model was used to reconstruct decadally averaged surface temperature. The thickness of the firn layer and the temperature gradient between the top and bottom of the firn layer causes known amounts of isotopic separation by gravitational and thermal fractionation, respectively (Severinghaus et al. 1998). Measurements of two isotopic ratios with differing sensitivity (d15N and d40Ar) allow separation of the two effects, providing the past firn thickness and temperature gradient DT (Kobashi et al. 2007, 2008a, b; Severinghaus and Brook 1999). Surface temperature can be calculated from the DT and accumulation rate data (Kobashi et al. 2008a), combined with a firn-densification/heat diffusion model. ABSTRACT SUPPLIED BY ORIGINATOR: Future Greenland temperature evolution will affect melting of the ice sheet and associated global sea-level change. Therefore, understanding Greenland temperature variability and its relation to global trends is critical. Here, we reconstruct the last 1,000 years of central Greenland surface temperature from isotopes of N2 and Ar in air bubbles in an ice core. This technique provides constraints on decadal to centennial temperature fluctuations. We found that northern hemisphere temperature and Greenland temperature changed synchronously at periods of ~20 years and 40-100 years. This quasi-periodic multi-decadal temperature fluctuation persisted throughout the last millennium, and is likely to continue into the future. NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Native Format(s) https://doi.org/10.25921/jxcs-rp23 HTTPS Landing Page Metadata Landing Page NCEI landing page with general information and links to access the data. information https://www.ncei.noaa.gov/access/paleo-search/study/9973 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/ice-core HTTPS Information NCEI Ice Core Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/isotopes/gisp2-ar-n2-temperature2010.xls HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/isotopes/gisp2-ar-n2-temperature2010.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21