noaa-lake-14629 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 2024-05-24 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Lake Sibaya, South Africa 1800 Year Diatom Hydrological Data 2013-06-27 publication doi:10.25921/a1xq-ar52 noaa-lake-14629 NCEI DSI 1200_02 NCEI DSI 1200_01 Stager, J.C. originator Stager, J.C. author Ryves, D.B. originator Ryves, D.B. author King, C.D. originator King, C.D. author Madson, J. originator Madson, J. author Hazzard, M. originator Hazzard, M. author Neumann, F.H. originator Neumann, F.H. author Maud, R. originator Maud, R. 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 climate reconstructions|paleolimnology with a geographic location of South Africa, Southern Africa. The time period coverage is from 1802 to 60 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 > climate reconstructions|paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > climate reconstructions|paleolimnology earth science > paleoclimate > paleolimnology > population abundance earth science > paleoclimate > paleolimnology > reconstruction earth science > paleoclimate > paleolimnology > lake level 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 hydrology theme What: depth; Material: null What: age; Material: null What: total planktic diatoms; Material: null What: electrical conductivity; Material: diatom assemblage|lake water What: age; 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 > Africa > Southern Africa > South Africa > Lake Sibaya > LATITUDE -27.3333 > LONGITUDE 32.6 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: Stager, J.C.; Ryves, D.B.; King, C.D.; Madson, J.; Hazzard, M.; Neumann, F.H.; Maud, R. (2013-06-27): NOAA/WDS Paleoclimatology - Lake Sibaya, South Africa 1800 Year Diatom Hydrological Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/a1xq-ar52. 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. Late Holocene precipitation variability in the summer rainfall region of South Africa 2013 publication J. Curt Stager, David B. Ryves, Christiaan King, Jerome Madson, Matthew Hazzard, Frank H. Neumann, Rodney Maud author Quaternary Science Reviews publisher https://doi.org/10.1016/j.quascirev.2013.01.022 HTTPS Web Browser Associated Reference published 2013 J. Curt Stager, David B. Ryves, Christiaan King, Jerome Madson, Matthew Hazzard, Frank H. Neumann, Rodney Maud, 2013: Late Holocene precipitation variability in the summer rainfall region of South Africa. Quaternary Science Reviews, 67, 105-120, 10.1016/j.quascirev.2013.01.022 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 1802 cal yr BP to 60 cal yr BP; 32.6 32.6 -27.3333 -27.3333 Study Coordinates -27.3333 32.6 148 1890 STUDY NOTES: Diatom record of core SIB-B collected from 16 m depth in the western arm of Lake Sibaya in 2004. Age model based on AMS dating of pollen fractions and bulk organic sediments, and stratigraphic matching with additional cores dated with lead-210, cesium-137, and exotic pollen (see manuscript for details). Higher percent planktonic diatoms ("diat-p%") taken to indicate qualitatively wetter conditions that would be likely to favor planktonic over benthic taxa due to higher lake level, suspended sediments in water column, and/or nutrient enrichment from enhanced runoff. Planktonic taxa: Aulacoseira, long Nitzschia, Synedra cf. acus and S. cf. tenera. Diatom-based conductivity estimates ("diat_cond") intended for qualitative use, with lower conductivity assumed to represent wetter climatic conditions. ABSTRACT SUPPLIED BY ORIGINATOR: The late Holocene history of the South African summer rainfall zone offers insights into the effects of climate on ecosystems and human societies, as well as into the accuracy of model projections of the future. However, some important aspects of this region's climatic history remain unresolved. Here we present new high-resolution diatom records representing hydrological fluctuations at Lake Sibaya, KwaZulu-Natal, during the last 1800 years. The cores were dated with 14C, 210Pb, 137Cs, and exotic pollen, and were sampled at increments of 1-22 years. A low stand ending ~AD 150 was followed by additional decadal to century-scale droughts, most notably ~AD 1540-1760, and several periods of markedly wetter conditions ~AD 220-290, AD 790-830, AD 1470-1540, and AD 1760-1860. The Medieval Climate Anomaly was generally wetter than average and the Little Ice Age was generally drier, but hydroclimate during both intervals was highly variable. These records confirm that local tree ring and stalagmite gray scale series represent rainfall variability, but they also show that widely cited stable isotope series from Makapansgat do not represent past climate as clearly. Because many interpretations of the climatic history of southern Africa have been influenced by those isotope data, we re-examine late Holocene precipitation variability in the summer rainfall zone, and also address model projections of future precipitation in the region. 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Native Format(s) https://doi.org/10.25921/a1xq-ar52 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/14629 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/africa/sibaya2013.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