noaa-icecore-36913 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 2025-06-20 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Guliya Ice Cap, China, -0.64 to 15ka BP Ice Core d18O and d-excess Data 2022-10-07 publication doi:10.25921/3kk4-mx85 noaa-icecore-36913 NCEI DSI 1200_02 NCEI DSI 1200_01 Thompson, L.G. originator Thompson, L.G. author Severinghaus, J. originator Severinghaus, J. author Yao, T. originator Yao, T. author Davis, M.E. originator Davis, M.E. author Mosley-Thompson, E. originator Mosley-Thompson, E. author Beaudon, E. originator Beaudon, E. author Sierra-Hernández, M.R. originator Sierra-Hernández, M.R. author Porter, S.E. originator Porter, S.E. 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 Xinjiang, China. The time period coverage is from 15000 to -64 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 core > hydrogen 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 Monsoon millennial resolution westerlies theme What: deuterium excess; Material: bulk ice What: delta 18O; Material: bulk ice What: deuterium excess; Material: bulk ice What: deuterium excess; Material: bulk ice What: delta 18O; Material: bulk ice What: delta 18O; Material: bulk ice What: depth; Material: null What: ice age; Material: null What: deuterium excess; Material: bulk ice What: ice age; Material: null What: depth; Material: null What: deuterium excess; Material: bulk ice What: depth; Material: null What: delta 18O; Material: bulk ice What: deuterium excess; Material: bulk ice What: ice age; Material: null What: delta 18O; Material: bulk ice What: ice age; Material: null What: deuterium excess; Material: bulk ice What: delta 18O; Material: bulk ice What: delta 18O; 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 > Asia > Eastern Asia > China > Xinjiang > Guliya Ice Cap Summit > LATITUDE 35.25 > LONGITUDE 81.48 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: Thompson, L.G.; Severinghaus, J.; Yao, T.; Davis, M.E.; Mosley-Thompson, E.; Beaudon, E.; Sierra-Hernández, M.R.; Porter, S.E. (2022-10-07): NOAA/WDS Paleoclimatology - Guliya Ice Cap, China, -0.64 to 15ka BP Ice Core d18O and d-excess Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/3kk4-mx85. 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. Use of d18Oatm in dating a Tibetan ice core record of Holocene/Late Glacial climate 2022 publication Thompson, Lonnie G., Jeffrey P. Severinghaus, Tandong Yao, Mary E. Davis, Ellen Mosley-Thompson, Emilie Beaudon, M. Roxana Sierra-Hernández, Stacy E. Porter author Proceedings of the National Academy of Sciences publisher https://doi.org/10.1073/pnas.2205545119 HTTPS Web Browser Associated Reference published 2022 Thompson, Lonnie G., Jeffrey P. Severinghaus, Tandong Yao, Mary E. Davis, Ellen Mosley-Thompson, Emilie Beaudon, M. Roxana Sierra-Hernández, Stacy E. Porter, 2022: Use of d18Oatm in dating a Tibetan ice core record of Holocene/Late Glacial climate. Proceedings of the National Academy of Sciences, 119, , 10.1073/pnas.2205545119 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 15000 cal yr BP to -64 cal yr BP; 81.48 81.48 35.25 35.25 Study Coordinates 35.25 81.48 -13050 2014 ABSTRACT SUPPLIED BY ORIGINATOR: Ice cores from the northwestern Tibetan Plateau (NWTP) contain long records of regional climate variability, but refrozen meltwater and dust in these cores has hampered development of robust timescales. Here we introduce an approach to dating the ice via the isotopic composition of atmospheric O2 in air bubbles (d18Oatm), along with annual layer counting and radiocarbon dating. We provide a robust chronology for water isotope records (d18Oice and d-excess) from three ice cores from the Guliya ice cap in the NWTP. The measurement of d18Oatm, although common in polar ice core timescales, has rarely been used on ice cores from low- latitude high-altitude glaciers due to 1) low air pressure, 2) the common presence of refrozen melt that adds dissolved gases and reduces the amount of air available for analysis, and 3) the respiratory consumption of molecular oxygen (O2) by microorganisms in the ice, which fractionates the d18O of O2 from the atmospheric value. Here we make corrections for melt and respiration to address these complications. The resulting records of water isotopes from the Guliya ice cores reveal climatic variations over the last 15,000 y, the timings of which correspond to those observed in independently dated lake and speleothem records and confirm that the Guliya ice cap existed before the Holocene. The millennial-scale drivers of d18Oice are complex and temporally variable; however, Guliya d18Oice values since the mid-20th century are the highest since the beginning of the Holocene and have increased with regional air temperature. 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/10.25921/3kk4-mx85 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/36913 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/trop/guliya/guliya2022_raw_d18O_dex-GS3.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/trop/guliya/guliya2022_raw_d18O_dex-GS2.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/trop/guliya/guliya2022_raw_d18O_dex-GP.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/trop/guliya/guliya2022_100yavgs_d18O_dex-GScomp.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/trop/guliya/guliya2022_100yavgs_d18O_dex-GS3.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/trop/guliya/guliya2022_100yavgs_d18O_dex-GS2.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/icecore/trop/guliya/guliya2022_100yavgs_d18O_dex-GP.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