noaa-cave-40896 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 2025-04-30 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Lianhua Cave, Hunan Geochemical Data from 12400 to 51 Cal Yr BP 2025-01-30 publication doi:10.25921/6qbm-dp28 noaa-cave-40896 NCEI DSI 1200_02 NCEI DSI 1200_01 Zhang, H. originator Zhang, H. author Yu, K. originator Yu, K. author Zhao, J.-x. originator Zhao, J.-x. author Feng, Y.-x. originator Feng, Y.-x. author Lin, Y.S. originator Lin, Y.S. author Zhou, W. originator Zhou, W. author Liu, G. originator Liu, G. 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 Cave. The data include parameters of speleothems with a geographic location of China, Eastern Asia. The time period coverage is from 12431 to 51 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, and other aspects of climate derived from mineral deposits found in caves. 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-cave.png Paleoclimatology - Speleothem PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Land Records > Cave Deposits Earth Science > Climate Indicators > Paleoclimate Indicators > Speleothems Earth Science > Paleoclimate > Land Records > Cave Deposits 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 > speleothems earth science > paleoclimate > speleothems earth science > paleoclimate > speleothems earth science > paleoclimate > speleothems > 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: age; Material: null What: delta 18O; Material: aragonite What: depth; Material: null 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 > Lianhua Cave, Hunan > LATITUDE 29.48 > LONGITUDE 109.5333 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: Zhang, H.; Yu, K.; Zhao, J.-x.; Feng, Y.-x.; Lin, Y.S.; Zhou, W.; Liu, G. (2025-01-30): NOAA/WDS Paleoclimatology - Lianhua Cave, Hunan Geochemical Data from 12400 to 51 Cal Yr BP. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/6qbm-dp28. 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. 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East Asian Summer Monsoon variations in the past 12.5ka: High-resolution δ18O record from a precisely dated aragonite stalagmite in central China 2013 publication Zhang, Hui-Ling; Ke-Fu Yu; Jian-Xin Zhao; Yue-Xing Feng; Yu-Shi Lin; Wei Zhou; Guo-Hui Liu author Journal of Asian Earth Sciences publisher https://doi.org/10.1016/j.jseaes.2013.04.015 HTTPS Web Browser Associated Reference published 2013 Zhang, Hui-Ling; Ke-Fu Yu; Jian-Xin Zhao; Yue-Xing Feng; Yu-Shi Lin; Wei Zhou; Guo-Hui Liu, 2013: East Asian Summer Monsoon variations in the past 12.5ka: High-resolution δ18O record from a precisely dated aragonite stalagmite in central China. Journal of Asian Earth Sciences, 73, 162-175, 10.1016/j.jseaes.2013.04.015 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 12431 cal yr BP to 51 cal yr BP; 109.5333 109.5333 29.48 29.48 Study Coordinates 29.48 109.5333 -10481 1899 STUDY NOTES: Data contributed as part of SISAL v3 Global Speleothem Isotope and Trace Element Database (https://doi.org/10.25921/jajq-qg60). Notes from the SISAL database: Entity LH-2 (SISAL entity_id = 496): The original age model has age inversions at depths: 746.8 and 748.0 mm. The interp_age at depth 748.0 mm was altered to be the average of the two neighbouring samples. ABSTRACT SUPPLIED BY ORIGINATOR: Due to possible aragonite to calcite transformation resulting in alteration in isotopic signatures and a bias in age-dating, aragonite speleothems are often excluded from paleoclimatic archives. However, aragonite stalagmites contain ppm-level uranium content, making them much easier to date, achieving higher age-dating precisions than calcite stalagmites. In this regard, provided aragonite-to-calcite transformation did not occur, aragonite stalagmites are potentially well suited for Holocene climate research, given their climate proxies can be placed into a better constrained chronological framework. In this paper, we present high-precision U/Th dates and O isotopic time series for a 82 cm long, continuous growth aragonite stalagmite, LH2, from Lianhua Cave, Hunan Province, China, and discuss East Asian Summer Monsoon (EASM) variability for the last 12.5 ka BP (before present). The U/Th-dated δ18O sequence with a mean 16-year resolution and the growth rate pattern of LH2 show that EASM experienced a strengthening stage, a strong stage and a weakening stage during the last 12.5 ka. During the YD (12.5–11.5 ka BP), heavy δ18O values and low growth rate indicate a weak monsoon period. During the Preboreal (from ∼11.5 to 10.6 ka BP), δ18O values decreased dramatically (∼1.94‰) reflecting abrupt strengthening of the monsoon. From 10.6 to 4.2 ka BP, the record is characterized by the lightest δ18O values and high growth rates, suggesting a strong monsoon period. The summer monsoon weakened substantially after 4.2 ka BP, as inferred from gradually increasing δ18O values and decreasing growth rate. Overall, the intensity of the EASM is regulated by summer insolation at 30°N during the last 12.5 ka. Although oxygen isotope fractionation is different between aragonite–H2O and calcite–H2O because of Rayleigh Fractionation Law, the overall temporal pattern of δ18O values from aragonite stalagmite LH2 is concordant with other high-resolution Holocene calcite stalagmite records from South China. The comparison among these records shows that the Holocene Optimum was synchronous across Asian continental region influenced by the EASM and Indian Summer Monsoon (ISM), lasting from ∼10.6 to 4.2 ka BP, as reflected by consistently lighter δ18O values among all these records regardless of their latitudinal difference. These records do not support previously reported asynchronism between EASM and ISM. In details, the long-term δ18O trend in LH2 is punctuated by a number of centennial fluctuations. For instance, two weak monsoon events occurred at 9232 ± 57 yr BP and 8137 ± 21 yr BP, correlating in time with cooling events in Greenland ice cores. The latest weak monsoon event centered at 302 ± 8 yr BP which is related to the Little Ice Age (LIA). In addition, the monsoon intensity derived from our record also shows a strong connection with latitudinal migration of the Inter-Tropical Convergence Zone (ITCZ) as recorded in the Cariaco Basin sediments. Spectral analysis of δ18O values shows that significant peaks match with solar periodicities of 208 yr (de Vries cycle), 86 yr (Gleissberg cycle) or related to Δ14C production suggesting shorter-term monsoon variations are forced by solar radiation. Overall, our study suggests that the δ18O record in the aragonite stalagmite is highly consistent with those derived from calcite stalagmites, suggesting that aragonite stalagmites are suitable for palaeoclimate reconstruction, especially for the Holocene period, as aragonite–calcite transformation has not occurred. 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/10.25921/6qbm-dp28 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/40896 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/speleothem HTTPS Information NCEI Cave Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/speleothem/SISAL-v3/noaa_templates/Zhang2013-LH-2.txt HTTPS Download /speleothem/SISAL-v3/noaa_templates/Zhang2013-LH-2.txt Speleothem download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21