noaa-icecore-33172 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 2023-10-12 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Dome Fuji and NEEM Ice Cores 150,000 Year Gas Data 2021-03-29 publication doi:10.25921/eh6t-cs96 noaa-icecore-33172 NCEI DSI 1200_02 NCEI DSI 1200_01 Oyabu, I. originator Oyabu, I. author Kawamura, K. originator Kawamura, K. author Kitamura, K. originator Kitamura, K. author Dallmayr, R. originator Dallmayr, R. author Kitamura, A. originator Kitamura, A. author Sawada, C. originator Sawada, C. author Severinghaus, J. originator Severinghaus, J. author Beaudette, R. originator Beaudette, R. author Orsi, A.J. originator Orsi, A.J. author Sugawara, S. originator Sugawara, S. author Ishidoya, S. originator Ishidoya, S. author Dahl-Jensen, D. originator Dahl-Jensen, D. author Goto-Azuma, K. originator Goto-Azuma, K. author Aoki, S. originator Aoki, S. author Nakazawa, T. originator Nakazawa, 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 ice cores with a geographic location of Antarctica. The time period coverage is from 150468 to 167 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 > ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > climate forcing|ice cores earth science > paleoclimate > climate forcing|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 forcing|ice cores earth science > paleoclimate > climate forcing|ice cores earth science > paleoclimate > climate forcing|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 forcing|ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > climate forcing|ice cores earth science > paleoclimate > climate forcing|ice cores earth science > paleoclimate > climate forcing|ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > climate forcing|ice cores earth science > paleoclimate > climate forcing|ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > climate forcing|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 forcing|ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > climate forcing|ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > climate forcing|ice cores earth science > paleoclimate > climate forcing|ice cores earth science > paleoclimate > climate forcing|ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > ice cores earth science > paleoclimate > ice core > atmospheric gas 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 What: air content; Material: bulk ice What: delta Ar/N2; Material: bulk atmosphere What: delta 18O; Material: oxygen gas What: delta O2/N2; Material: bulk atmosphere What: depth; Material: null What: methane; Material: bulk atmosphere What: delta 18O; Material: oxygen gas What: air content; Material: bulk ice What: delta 15N; Material: nitrogen gas What: delta Ar/N2; Material: bulk atmosphere What: nitrous oxide; Material: bulk atmosphere What: gas age; Material: null What: nitrous oxide; Material: bulk atmosphere What: delta 18O; Material: oxygen gas What: delta Ar/N2; Material: bulk atmosphere What: delta 18O; Material: oxygen gas What: notes; Material: null What: depth at sample end; Material: null What: delta 18O; Material: oxygen gas What: methane; Material: bulk atmosphere What: gas age; Material: null What: carbon dioxide; Material: bulk atmosphere What: delta O2/N2; Material: bulk atmosphere What: delta 18O; Material: oxygen gas What: methane; Material: bulk atmosphere What: carbon dioxide; Material: bulk atmosphere What: air content; Material: bulk ice What: nitrous oxide; Material: bulk atmosphere What: delta 15N; Material: nitrogen gas What: delta Ar/N2; Material: bulk atmosphere What: delta Ar/N2; Material: bulk atmosphere What: delta Ar/N2; Material: bulk atmosphere What: methane; Material: bulk atmosphere What: delta O2/N2; Material: bulk atmosphere What: carbon dioxide; Material: bulk atmosphere What: delta O2/N2; Material: bulk atmosphere What: depth at sample start; Material: null What: carbon dioxide; Material: bulk atmosphere What: nitrous oxide; Material: bulk atmosphere What: delta 15N; Material: nitrogen gas What: delta O2/N2; Material: bulk atmosphere What: delta O2/N2; Material: bulk atmosphere 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 > Antarctica > Dome Fuji > LATITUDE -77.32 > LONGITUDE 38.7 Continent > North America > Greenland > NEEM > LATITUDE 77.45 > LONGITUDE -51.066667 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: Oyabu, I.; Kawamura, K.; Kitamura, K.; Dallmayr, R.; Kitamura, A.; Sawada, C.; Severinghaus, J.; Beaudette, R.; Orsi, A.J.; Sugawara, S.; Ishidoya, S.; Dahl-Jensen, D.; Goto-Azuma, K.; Aoki, S.; Nakazawa, T. (2021-03-29): NOAA/WDS Paleoclimatology - Dome Fuji and NEEM Ice Cores 150,000 Year Gas Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/eh6t-cs96. 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. New technique for high-precision, simultaneous measurements of CH4, N2O and CO2 concentrations; isotopic and elemental ratios of N2, O2 and Ar; and total air content in ice cores by wet extraction 2020 publication Ikumi Oyabu, Kenji Kawamura, Kyotaro Kitamura, Remi Dallmayr, Akihiro Kitamura, Chikako Sawada, Jeffrey P. Severinghaus, Ross Beaudette, Anaïs Orsi, Satoshi Sugawara, Shigeyuki Ishidoya, Dorthe Dahl-Jensen, Kumiko Goto-Azuma, Shuji Aoki, and Takakiyo Nakazawa author Atmospheric Measurement Techniques publisher https://doi.org/10.5194/amt-13-6703-2020 HTTPS Web Browser Associated Reference published 2020 Ikumi Oyabu, Kenji Kawamura, Kyotaro Kitamura, Remi Dallmayr, Akihiro Kitamura, Chikako Sawada, Jeffrey P. Severinghaus, Ross Beaudette, Anaïs Orsi, Satoshi Sugawara, Shigeyuki Ishidoya, Dorthe Dahl-Jensen, Kumiko Goto-Azuma, Shuji Aoki, and Takakiyo Nakazawa, 2020: New technique for high-precision, simultaneous measurements of CH4, N2O and CO2 concentrations; isotopic and elemental ratios of N2, O2 and Ar; and total air content in ice cores by wet extraction. Atmospheric Measurement Techniques, 13, 6703-6731, 10.5194/amt-13-6703-2020 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 150468 cal yr BP to 167 cal yr BP; -51.066667 38.7 -77.32 77.45 -148518 1783 STUDY NOTES: Ice core gas data (15N, 18O, O2/N2, Ar/N2, CH4, N2O, CO2, TAC) from the Dome Fuji, Antarctica, and NEEM (North Greenland Eemian Ice Drilling), Greenland, ice cores for the past 2,000 years, plus Dome Fuji data 8.2 - 150 kyr BP. ABSTRACT SUPPLIED BY ORIGINATOR: Air in polar ice cores provides unique information on past climatic and atmospheric changes. We developed a new method combining wet extraction, gas chromatography and mass spectrometry for high-precision, simultaneous measurements of eight air components (CH4, N2O and CO2 concentrations; d15N, d18O, dO2/N2 and dAr/N2; and total air content) from an ice-core sample of ~60g. The ice sample is evacuated for ~2h and melted under vacuum, and the released air is continuously transferred into a sample tube at 10K within 10 min. The air is homogenized in the sample tube overnight at room temperature and split into two aliquots for mass spectrometric and gas chromatographic measurements. Care is taken to minimize (1) contamination of greenhouse gases by using a long evacuation time, (2) consumption of oxygen during sample storage by a passivation treatment on sample tubes, and (3) fractionation of isotopic ratios with a long homogenization time for splitting. Precision is assessed by analyzing standard gases with artificial ice and duplicate measurements of the Dome Fuji and NEEM ice cores. The overall reproducibility (1 SD) of duplicate ice-core analyses are 3.2 ppb, 2.2 ppb and 2.9 ppm for CH4, N2O and CO2 concentrations; 0.006 per mil, 0.011 per mil, 0.09 per mil and 0.12 per mil for d15N, d18O, dO2/N2 and dAr/N2; and 0.63 mLSTP kg-1 for total air content, respectively. Our new method successfully combines the high-precision, small-sample and multiple-species measurements, with a wide range of applications for ice-core paleoenvironmental studies. 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/eh6t-cs96 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/33172 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/neem/oyabu2020neem.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/antarctica/domefuji/oyabu2020domefuji-2k.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/antarctica/domefuji/oyabu2020domefuji-150k.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