noaa-lake-24476 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 2023-09-01 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Lake Chichancanab Terminal Classic Droughts Gypsum Hydration Water Isotopes 2018-08-02 publication doi:10.25921/52v7-gc08 noaa-lake-24476 NCEI DSI 1200_02 NCEI DSI 1200_01 Evans, N.P. originator Evans, N.P. author Bauska, T.K. originator Bauska, T.K. author Gázquez-Sánchez, F. originator Gázquez-Sánchez, F. author Brenner, M. originator Brenner, M. author Curtis, J.H. originator Curtis, J.H. author Hodell, D.A. originator Hodell, D.A. 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 instrumental with a geographic location of Yucatan, Mexico. The time period coverage is from 2495 to -65 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 > instrumental earth science > paleoclimate > instrumental earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > instrumental earth science > paleoclimate > paleolimnology earth science > paleoclimate > instrumental earth science > paleoclimate > instrumental earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > instrumental earth science > paleoclimate > instrumental earth science > paleoclimate > instrumental earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > instrumental earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > instrumental earth science > paleoclimate > instrumental earth science > paleoclimate > paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > instrumental earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology > hydrogen isotopes earth science > paleoclimate > paleolimnology > 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: sample identification; Material: null What: longitude; Material: null What: depth; Material: null What: delta 18O; Material: lake water What: delta 17O excess; Material: lake water What: age; Material: null What: moisture index; Material: null What: delta 18O; Material: lake water What: age; Material: null What: latitude; Material: null What: delta 18O; Material: lake water What: age; Material: null What: delta 18O; Material: gypsum What: deuterium excess; Material: lake water What: delta 17O; Material: lake water What: delta 2H; Material: lake water What: age; Material: null What: delta 17O excess; Material: lake water What: age; Material: null What: delta 17O; Material: gypsum What: delta 2H; Material: lake water What: deuterium excess; Material: lake water What: delta 17O; Material: lake water What: notes; Material: null What: delta 2H; Material: gypsum What: delta 17O; Material: lake water What: sample identification; Material: null What: delta 2H; Material: lake water 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 > North America > Mexico > Yucatan > Lake Chichancanab > LATITUDE 19.855 > LONGITUDE -88.763 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: Evans, N.P.; Bauska, T.K.; Gázquez-Sánchez, F.; Brenner, M.; Curtis, J.H.; Hodell, D.A. (2018-08-02): NOAA/WDS Paleoclimatology - Lake Chichancanab Terminal Classic Droughts Gypsum Hydration Water Isotopes. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/52v7-gc08. 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. Quantification of drought during the collapse of the classic Maya civilization 2018 publication Nicholas P. Evans, Thomas K. Bauska, Fernando Gázquez-Sánchez, Mark Brenner, Jason H. Curtis, David A. Hodell author Science publisher https://doi.org/10.1126/science.aas9871 HTTPS Web Browser Associated Reference published 2018 Nicholas P. Evans, Thomas K. Bauska, Fernando Gázquez-Sánchez, Mark Brenner, Jason H. Curtis, David A. Hodell, 2018: Quantification of drought during the collapse of the classic Maya civilization. Science, 361, 498-501, 10.1126/science.aas9871 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: -545 CE to 2015 CE; Date Range: 2495 cal yr BP to -65 cal yr BP; -88.763 -88.763 19.855 19.855 Study Coordinates 19.855 -88.763 -545 2015 STUDY NOTES: Gypsum hydration water oxygen (d17O, d18O) and hydrogen (dD) isotopes from Lake Chichancanab, Yucatan, Mexico, for 602-1092 CE. ABSTRACT SUPPLIED BY ORIGINATOR: The demise of Lowland Classic Maya civilization during the Terminal Classic Period (~800 to 1000 CE) is a well-cited example of how past climate may have affected ancient societies. Attempts to estimate the magnitude of hydrologic change, however, have met with equivocal success because of the qualitative and indirect nature of available climate proxy data. We reconstructed the past isotopic composition (d18O, dD, 17O-excess, and d-excess) of water in Lake Chichancanab, Mexico, using a technique that involves isotopic analysis of the structurally bound water in sedimentary gypsum, which was deposited under drought conditions. The triple oxygen and hydrogen isotope data provide a direct measure of past changes in lake hydrology. We modeled the data and conclude that annual precipitation decreased between 41 and 54% (with intervals of up to 70% rainfall reduction during peak drought conditions) and that relative humidity declined by 2 to 7% compared to present-day conditions. 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/10.25921/52v7-gc08 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/24476 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/yucatan/chichancanab2018water.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/yucatan/chichancanab2018gypsum.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/yucatan/chichancanab2018drought.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/yucatan/chichancanab2018age.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