noaa-lake-19424 eng; USA utf8 dataset Bauer, Bruce DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce +1 303-497-6280 +1 303-497-6513 325 Broadway, E/CC23 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2018-12-11 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Lake Malawi 1.3MYr Geochemical Data and Principal Components Analysis 2015-12-07 publication noaa-lake-19424 NCEI DSI 1200_01 Lyons, R.P. originator Lyons, R.P. author Scholz, C.A. originator Scholz, C.A. author Cohen, A.S. originator Cohen, A.S. author King, J.W. originator King, J.W. author Brown, E.T. originator Brown, E.T. author Ivory, S.J. originator Ivory, S.J. author Johnson, T.C. originator Johnson, T.C. author Deino, A.L. originator Deino, A.L. author Reinthal, P.N. originator Reinthal, P.N. author McGlue, M.M. originator McGlue, M.M. author Blome, M.W. originator Blome, M.W. 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 Malawi, Eastern Africa. The time period coverage is from 1277697 to 10694 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 Bauer, Bruce DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce +1 303-497-6280 +1 303-497-6513 325 Broadway, E/CC23 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncdc.noaa.gov/c/images/pc-default-lake.png Paleoclimatology - Lake PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records theme Global Change Master Directory (GCMD) Science Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher 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 > carbon isotopes earth science > paleoclimate > paleolimnology > physical properties earth science > paleoclimate > paleolimnology > geochemistry theme Global Change Master Directory (GCMD) Science Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Continent > Africa > Eastern Africa > Malawi> Lake Malawi, core GLAD7-MAL05-1 > LATITUDE -11.29389 > LONGITUDE 34.43722 place otherRestrictions Cite as: Lyons, R.P.; Scholz, C.A.; Cohen, A.S.; King, J.W.; Brown, E.T.; Ivory, S.J.; Johnson, T.C.; Deino, A.L.; Reinthal, P.N.; McGlue, M.M.; Blome, M.W. (2015-12-07): NOAA/WDS Paleoclimatology - Lake Malawi 1.3MYr Geochemical Data and Principal Components Analysis. [indicate subset used]. NOAA National Centers for Environmental Information. https://www.ncdc.noaa.gov/paleo/study/19424. 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. Continuous 1.3 million-year record of East African hydroclimate, and implications for patterns of evolution and biodiversity 2015 publication Robert P. Lyons, Christopher A. Scholz, Andrew S Cohen, John W. King, Erik T. Brown, Sarah J. Ivory, Thomas C. Johnson, Alan L. Deino, Peter N. Reinthal, Michael M. McGlue, and Margaret W. Blome author Proceedings of the National Academy of Sciences publisher https://doi.org/10.1073/pnas.1512864112 HTTPS Web Browser Associated Reference published 2015 Robert P. Lyons, Christopher A. Scholz, Andrew S Cohen, John W. King, Erik T. Brown, Sarah J. Ivory, Thomas C. Johnson, Alan L. Deino, Peter N. Reinthal, Michael M. McGlue, and Margaret W. Blome, 2015: Continuous 1.3 million-year record of East African hydroclimate, and implications for patterns of evolution and biodiversity. Proceedings of the National Academy of Sciences, , , 10.1073/pnas.1512864112 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 1277697 cal yr BP to 10694 cal yr BP; 34.43722 34.43722 -11.29389 -11.29389 Study Coordinates -11.29389 34.43722 -1275747 -8744 STUDY NOTES: Continuous geochemical data and principal components analysis for sediments collectd in Lake Malawi, East Africa, for the past 1.3 million years. PCA was performed on total organic carbon (TOC), d13C of organic matter, saturated bulk density, carbonate abundance, and lightness of color (L*). ABSTRACT SUPPLIED BY ORIGINATOR: The transport of moisture in the tropics is a critical process for the global energy budget and on geologic timescales, has markedly influenced continental landscapes, migratory pathways, and biological evolution. Here we present a continuous, first-of-its-kind 1.3-My record of continental hydroclimate and lake-level variability derived from drill core data from Lake Malawi, East Africa (9-15S). Over the Quaternary, we observe dramatic shifts in effective moisture, resulting in large-scale changes in one of the world's largest lakes and most diverse freshwater ecosystems. Results show evidence for 24 lake level drops of more than 200 m during the Late Quaternary, including 15 lowstands when water levels were more than 400 m lower than modern. A dramatic shift is observed at the Mid-Pleistocene Transition (MPT), consistent with far-field climate forcing, which separates vastly different hydroclimate regimes before and after ~800,000 years ago. Before 800 ka, lake levels were lower, indicating a climate drier than today, and water levels changed frequently. Following the MPT high-amplitude lake level variations dominate the record. From 800 to 100 ka, a deep, often overfilled lake occupied the basin, indicating a wetter climate, but these highstands were interrupted by prolonged intervals of extreme drought. Periods of high lake level are observed during times of high eccentricity. The extreme hydroclimate variability exerted a profound influence on the Lake Malawi endemic cichlid fish species flock; the geographically extensive habitat reconfiguration provided novel ecological opportunities, enabling new populations to differentiate rapidly to distinct species. DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Customer Engagement Branch 1-828-271-4800 1-828-271-4876 151 Patton Avenue Veach-Baley Federal Building, Room 468 Asheville NC 28801-5001 USA ncei.orders@noaa.gov https://www.ncei.noaa.gov HTTPS Web Browser NOAA National Centers for Environmental Information (NCEI) NCEI home page with information, data access and contact information. information 8:00 - 6:00 Eastern distributor In most cases, electronic downloads of the data are free, however fees may apply for data certifications, copies of analog materials, and data distribution on physical media. Native Format(s) https://data.nodc.noaa.gov/cgi-bin/iso?id=noaa-lake-19424 HTTPS Landing Page NCEI landing page for this dataset Dataset landing page with general information and links to access the data. information https://www.ncdc.noaa.gov/paleo/study/19424 HTTPS Web Browser NCEI Study Page Study page with dataset access information. search https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/lake HTTPS Information NCEI Lake Page General information for this data type. information https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/malawi2015pca.txt HTTP Download NCEI Direct Download Direct download links for dataset files. download https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/malawi2015carb.txt HTTP Download NCEI Direct Download Direct download links for dataset files. download https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/malawi2015color.txt HTTP Download NCEI Direct Download Direct download links for dataset files. download https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/malawi2015density.txt HTTP Download NCEI Direct Download Direct download links for dataset files. download https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/malawi2015ca.txt HTTP Download NCEI Direct Download Direct download links for dataset files. download https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/malawi2015.xlsx HTTP Download NCEI Direct Download Direct download links for dataset files. download asNeeded This metadata record was translated from DIF using dif-9x-to-iso-19115-2.xsl Version: 2018-10-25