noaa-icecore-25530 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 2024-04-17 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Polar Ice Cores 3,000 Year Nitrous Oxide d15N and d18O Data 2018-10-31 publication doi:10.25921/k83n-kn82 noaa-icecore-25530 NCEI DSI 1200_02 NCEI DSI 1200_01 Prokopiou, M. originator Prokopiou, M. author Sapart, C.J. originator Sapart, C.J. author Rosen, J. originator Rosen, J. author Sperlich, P. originator Sperlich, P. author Blunier, T. originator Blunier, T. author Brook, E.J. originator Brook, E.J. author van de Wal, R.S.W. originator van de Wal, R.S.W. author Röckmann, T. originator Röckmann, 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 2639 to -58 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 > 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 > 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 > 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 > 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 core > nitrogen isotopes earth science > paleoclimate > ice core > oxygen 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 What: depth; Material: null What: delta 15N; Material: nitrous oxide What: delta 15N; Material: nitrous oxide What: delta 15N; Material: nitrous oxide What: sample identification; Material: null What: delta 15N; Material: nitrous oxide What: delta 15N; Material: nitrous oxide What: delta 15N; Material: nitrous oxide What: nitrous oxide; Material: bulk atmosphere What: delta 15N; Material: nitrous oxide What: delta 15N; Material: nitrous oxide What: gas age; Material: null What: delta 15N; Material: nitrous oxide What: delta 18O; Material: nitrous oxide What: delta 18O; Material: nitrous oxide What: nitrous oxide; Material: bulk atmosphere What: delta 18O; Material: nitrous oxide What: delta 15N; Material: nitrous oxide What: delta 15N; Material: nitrous oxide What: delta 18O; Material: nitrous oxide What: sample identification; Material: null What: depth; Material: null What: nitrous oxide; Material: bulk atmosphere What: delta 15N; Material: nitrous oxide What: nitrous oxide; Material: bulk atmosphere What: delta 15N; Material: nitrous oxide What: delta 15N; Material: nitrous oxide 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 > Siple Dome > LATITUDE -81.65 > LONGITUDE -148.82 Continent > North America > Greenland > GRIP > LATITUDE 72.58 > LONGITUDE -37.63 Continent > North America > Greenland > NEEM > LATITUDE 77.45 > LONGITUDE -51.066667 Continent > North America > Greenland > NGRIP > LATITUDE 75.1 > LONGITUDE -42.33 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: Prokopiou, M.; Sapart, C.J.; Rosen, J.; Sperlich, P.; Blunier, T.; Brook, E.J.; van de Wal, R.S.W.; Röckmann, T. (2018-10-31): NOAA/WDS Paleoclimatology - Polar Ice Cores 3,000 Year Nitrous Oxide d15N and d18O Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/k83n-kn82. 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. Changes in the Isotopic Signature of Atmospheric Nitrous Oxide and Its Global Average Source During the Last Three Millennia 2018 publication M. Prokopiou, C.J. Sapart, J. Rosen, P. Sperlich, T. Blunier, E. Brook, R.S.W. van de Wal, T. Röckmann author Journal of Geophysical Research: Atmospheres publisher https://doi.org/10.1029/2018JD029008 HTTPS Web Browser Associated Reference published 2018 M. Prokopiou, C.J. Sapart, J. Rosen, P. Sperlich, T. Blunier, E. Brook, R.S.W. van de Wal, T. Röckmann, 2018: Changes in the Isotopic Signature of Atmospheric Nitrous Oxide and Its Global Average Source During the Last Three Millennia. Journal of Geophysical Research: Atmospheres, 123, 10757-10773, 10.1029/2018JD029008 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: -689 CE to 2008 CE; Date Range: 2639 cal yr BP to -58 cal yr BP; -148.82 -37.63 -81.65 77.45 -689 2008 STUDY NOTES: Ice core nitrogen and oxygen isotope (d15N and d18O) of nitrous oxide (N2O) data from polar ice cores for the past 3,000 years. ABSTRACT SUPPLIED BY ORIGINATOR: Nitrous oxide (N2O) is a strong greenhouse gas whose mole fraction in the atmosphere has increased over the industrial period. We present a new set of isotope measurements of N2O in air extracted from ice cores covering the last 3,000 years. For the preindustrial (PI) atmosphere, we find an average N2O mole fraction of (267 ± 1) nmol/mol and average tropospheric N2O isotopic values of d15NavPI = (9.5 ± 0.1)permil, d18OPI = (47.1 ± 0.2)permil, d15NalphaPI = (17.8 ± 0.4)permil, and d15NBetaPI = (1.2 ± 0.4)permil. From PI to modern times all isotope signatures decreased with a total change of d15Nav = (-2.7 ± 0.2)permil, d18O = (-2.5 ± 0.4)permil, d15Nalpha = (-2.0 ± 0.7)permil, and d15NBeta (-3.5 ± 0.7)permil. Interestingly, the temporal evolution is not the same for d15Nav and d18O. d18O trends are relatively larger during the early part, and d15Nav trends are larger during the late part of the industrial period, implying a decoupling of sources over the industrial period. Using a mass balance model, we determined the isotopic composition of the total average N2O source. Assuming that the total present source is the sum of a constant natural source and an increasing anthropogenic source, this anthropogenic source has an isotopic signature of d15Navsource,anthrop = (-15.0 ± 2.6)permil, d18Osource,anthrop = (30.0 ± 2.6)permil, d15Nalphasource,anthrop = (-4.5 ± 1.7)permil, and d15NBetasource,anthrop = (-24.0 ± 8.4)permil. The 15N site preference of the source has increased since PI times, which is indicative of a relative shift from denitrification to nitrification sources, consistent with agricultural emissions playing a major role in the N2O increase. 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. 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Native Format(s) https://doi.org/10.25921/k83n-kn82 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/25530 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/ngrip/ngrip2018n2o-iso.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/greenland/summit/neem/neemfirn2018n2o-iso.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/greenland/summit/neem/neem2018n2o-iso.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/greenland/summit/grip/gases/grip2018n2o.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/antarctica/siple/siple2018n2o-iso.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