# Jiangjun Cave, China Termination II Speleothem Isotopes and Temperature Reconstruction #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 4.0 # Encoding: UTF-8 # NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), and date accessed when using downloaded data. # If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. # # Description/Documentation lines begin with '#' followed by a space # Data lines have no '#' # # NOAA_Landing_Page: https://www.ncdc.noaa.gov/paleo/study/34574 # Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata. # # Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-cave-34574.json # Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata. # # Data_Type: Speleothems # # Dataset_DOI: 10.25921/5yz6-8007 # # Science_Keywords: Air Temperature Reconstruction, Monsoon, Glacial, Meridional Overturning Circulation (MOC), Other Hydroclimate Reconstruction #--------------------------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/speleothem/asia/china/jiangjun2021jj0406temp.txt # Data_Download_Description: NOAA Template File; Speleothem JJ0406, Speleothem JJ0403 Data # #--------------------------------------- # Contribution_Date # Date: 2021-11-18 #--------------------------------------- # File_Last_Modified_Date # Date: 2021-11-18 #--------------------------------------- # Title # Study_Name: Jiangjun Cave, China Termination II Speleothem Isotopes and Temperature Reconstruction #--------------------------------------- # Investigators # Investigators: Wassenburg, J.A. #--------------------------------------- # Description_Notes_and_Keywords # Description: Stable isotope data of speleothem carbonate (d13C and d18O) and fluid inclusions (d2H and d18O), plus TEX86 temperature reconstruction, from Jianjun Cave, China for Termination II (~147-123ka). # Provided Keywords: Asian monsoon, speleothem, temperature, fluid inclusions, Termination II, Penultimate #--------------------------------------- # Publication # Authors: Jasper A. Wassenburg, Hubert B. Vonhof, Hai Cheng, Alfredo Martínez-García, Pia-Rebecca Ebner, Xianglei Li, Haiwei Zhang, Lijuan Sha, Ye Tian, R. Lawrence Edwards, Jens Fiebig, Gerald H. Haug # Published_Date_or_Year: 2021-11-18 # Published_Title: Penultimate deglaciation Asian monsoon response to North Atlantic circulation collapse # Journal_Name: Nature Geoscience # Volume: 14 # Edition: # Issue: # Pages: 937-941 # Report_Number: # DOI: 10.1038/s41561-021-00851-9 # Online_Resource: https://www.nature.com/articles/s41561-021-00851-9 # Full_Citation: # Abstract: During glacial terminations, massive iceberg discharges and meltwater pulses in the North Atlantic triggered a shutdown of the Atlantic Meridional Overturning Circulation (AMOC). Speleothem calcium carbonate oxygen isotope records (d18OCc) indicate that the collapse of the AMOC caused dramatic changes in the distribution and variability of the East Asian and Indian monsoon rainfall. However, the mechanisms linking changes in the intensity of the AMOC and Asian monsoon d18OCc are not fully understood. Part of the challenge arises from the fact that speleothem d18OCc depends on not only the d18O of precipitation but also temperature and kinetic isotope effects. Here we quantitatively deconvolve these parameters affecting d18OCc by applying three geochemical techniques in speleothems covering the penultimate glacial termination. Our data suggest that the weakening of the AMOC during meltwater pulse 2A caused substantial cooling in East Asia and a shortening of the summer monsoon season, whereas the collapse of the AMOC during meltwater pulse 2B (133,000 years ago) also caused a dramatic decrease in the intensity of the Indian summer monsoon. These results reveal that the different modes of the AMOC produced distinct impacts on the monsoon system. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Max Planck Society # Grant: #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation of China # Grant: 41888101 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: 1702816 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Institute for Basic Science # Grant: IBS-R028-Y2 #--------------------------------------- # Site_Information # Site_Name: Jiangjun Cave # Location: Asia>Eastern Asia>China # Northernmost_Latitude: 22.95 # Southernmost_Latitude: 22.95 # Easternmost_Longitude: 104.82 # Westernmost_Longitude: 104.82 # Elevation_m: 200 #--------------------------------------- # Data_Collection # Collection_Name: Jiangjun2021JJ0406temp # First_Year: 136897 # Last_Year: 124930 # Time_Unit: cal. year BP # Core_Length_m: # Parameter_Keywords: oxygen isotopes, geochemistry, other # Notes: Fluid inclusion isotopes, TEX86, D47, D48 #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # Variables # PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data) # ## dft_TEX86 depth,,,millimeter,,speleothems; climate reconstructions,,,N,depth from top Speleothem JJ0406 ## Age age,,,calendar kiloyear before present,,speleothems; climate reconstructions,,,N, age Speleothem JJ0406 ## Temp temperature,glycerol dialkyl glycerol tetraether index,,degree Celsius,,speleothems; climate reconstructions,,,N, TEX86 temperature Speleothem JJ0406 #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: dft_TEX86 Age Temp 275 124.930 19.42 312 126.020 19.75 320 126.075 20.04 350 126.207 19.38 405 126.863 19.54 445 127.392 17.83 475 127.557 17.10 490 127.609 16.74 628 128.653 15.73 646 128.865 15.83 675 130.581 17.11 675 130.581 16.79 690 130.679 16.71 790 134.730 15.75 850 136.897 16.62