noaa-lake-39540 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 2025-07-02 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Southwestern China lake geochemical data over the past 5.5kya 2024-05-31 publication doi:10.25921/2n74-et77 noaa-lake-39540 NCEI DSI 1200_02 NCEI DSI 1200_01 Hillman, A.L. originator Hillman, A.L. author Bain, D.J. originator Bain, D.J. author Wu, D. originator Wu, D. author Abbott, M.B. originator Abbott, M.B. 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 Lake. The data include parameters of paleolimnology with a geographic location of China, Eastern Asia. The time period coverage is from 5500 to -69 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 climate and environment derived from lake sediment records. 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-lake.png Paleoclimatology - Lake PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake 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 > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology > geochemistry earth science > paleoclimate > paleolimnology > oxygen isotopes earth science > paleoclimate > paleolimnology > carbon isotopes earth science > paleoclimate > paleolimnology > age control 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 biogeochemical cycles carbon cycle theme What: delta 13C; Material: organic matter What: carbonate; Material: null What: delta 13C; Material: null What: carbon/nitrogen; Material: organic matter What: age; Material: null What: delta 15N; Material: organic matter What: delta 18O; Material: null What: depth; Material: null What: organic matter; 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 > Lakes of China (Yilong, Qilu and Xingyun) > LATITUDE > LONGITUDE 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: Hillman, A.L.; Bain, D.J.; Wu, D.; Abbott, M.B. (2024-05-31): NOAA/WDS Paleoclimatology - Southwestern China lake geochemical data over the past 5.5kya. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/2n74-et77. 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. Decoupling of the Organic and Inorganic Lacustrine Carbon Cycles on the Chinese Yunnan Plateau in Response to Human Activities 2025 publication Hillman, Aubrey L.; Bain, Daniel J.; Wu, Duo; Abbott, Mark B. author Journal of Geophysical Research: Biogeosciences publisher https://doi.org/10.1029/2024JG008336 HTTPS Web Browser Associated Reference published 2025 Hillman, Aubrey L.; Bain, Daniel J.; Wu, Duo; Abbott, Mark B., 2025: Decoupling of the Organic and Inorganic Lacustrine Carbon Cycles on the Chinese Yunnan Plateau in Response to Human Activities. Journal of Geophysical Research: Biogeosciences, 130, , 10.1029/2024JG008336 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 5500 cal yr BP to -69 cal yr BP; 102.6035 102.792278 23.6615 24.181333 -3550 2019 ABSTRACT SUPPLIED BY ORIGINATOR: As anthropogenic impacts to both climate and freshwater resources continue to intensify in coming decades, an increasing number of lakes will experience carbon cycle perturbations. An examination of lakes that have experienced such perturbations for millennia can clarify the nature and severity of carbon cycle disturbances. Lakes precipitating carbonate minerals provide an opportunity to use measurements of both inorganic and organic carbon isotopes to detect the relationship between the inorganic and organic carbon cycles. We examine these dynamics among three lakes in Yunnan, China, which have been impacted by human activities for the last 1,500 years. We compare the period impacted by people to drying conditions and lowering lake levels during the middle Holocene, and more stable hydrologic conditions during the later Holocene, both of which are characterized by minimal anthropogenic influence. From 5,500 to 3,500 years BP, decreased precipitation, increased evaporation, and changes in vegetation drove increases in sediment carbon isotope values. Despite continued weakening of the Indian monsoon from 3,500 to 1,500 years BP, carbon isotopes values stabilized. Following anthropogenic manipulation of lake levels after 1,500 years BP, and despite differences in the magnitude of activities in the three catchments, a decrease in inorganic carbon isotopes without a parallel change in organic carbon isotopes is a pervasive feature in each system and a clear signature of human activity. We suggest possible drivers are an influx of dissolved inorganic carbon from either oxidized organic matter or dissolved carbonates from the watershed and/or the respiration of lake sediment organic matter. 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/10.25921/2n74-et77 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/39540 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/lake HTTPS Information NCEI Lake Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/asia/china/hillman2024/hillman2024-geochemical.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