noaa-cave-37062 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 - Anjohikely, Madagascar Speleothem d18O Record (AK1) from 5.38 to 1.92 kyr BP 2022-11-14 publication doi:10.25921/z5cd-zt47 noaa-cave-37062 NCEI DSI 1200_02 NCEI DSI 1200_01 Scroxton, N. originator Scroxton, N. author Burns, S.J. originator Burns, S.J. author McGee, D. originator McGee, D. author Godfrey, L.R. originator Godfrey, L.R. author Ranivoharimanana, L. originator Ranivoharimanana, L. author Faina, P. originator Faina, P. author Tiger, B.H. originator Tiger, B.H. 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 Cave. The data include parameters of speleothems with a geographic location of Madagascar. The time period coverage is from 5224 to 1998 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 temperature, precipitation, and other aspects of climate derived from mineral deposits found in caves. 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-cave.png Paleoclimatology - Speleothem PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Land Records > Cave Deposits Earth Science > Climate Indicators > Paleoclimate Indicators > Speleothems Earth Science > Paleoclimate > Land Records > Cave Deposits 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 > speleothems earth science > paleoclimate > speleothems earth science > paleoclimate > speleothems earth science > paleoclimate > speleothems earth science > paleoclimate > speleothems > age control earth science > paleoclimate > speleothems > 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 Hadley Circulation Monsoon Tropics decadal resolution theme What: depth; Material: null What: age; Material: null What: delta 18O; Material: null 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 Ocean > Indian Ocean > Madagascar > Anjohikely > LATITUDE -15.56 > LONGITUDE 46.87 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: Scroxton, N.; Burns, S.J.; McGee, D.; Godfrey, L.R.; Ranivoharimanana, L.; Faina, P.; Tiger, B.H. (2022-11-14): NOAA/WDS Paleoclimatology - Anjohikely, Madagascar Speleothem d18O Record (AK1) from 5.38 to 1.92 kyr BP. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/z5cd-zt47. 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. Hydroclimate variability in the Madagascar and Southeast African summer monsoons at the Mid- to Late-Holocene transition 2023 publication Scroxton, Nick, Stephen J. Burns, David McGee, Laurie R. Godfrey, Lovasoa Ranivoharimanana, Peterson Faina, Benjamin H. Tiger author Quaternary Science Reviews publisher https://doi.org/10.1016/j.quascirev.2022.107874 HTTPS Web Browser Associated Reference published 2023 Scroxton, Nick, Stephen J. Burns, David McGee, Laurie R. Godfrey, Lovasoa Ranivoharimanana, Peterson Faina, Benjamin H. Tiger, 2023: Hydroclimate variability in the Madagascar and Southeast African summer monsoons at the Mid- to Late-Holocene transition. Quaternary Science Reviews, 300, , 10.1016/j.quascirev.2022.107874 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 5224 cal yr BP to 1998 cal yr BP; 46.87 46.87 -15.56 -15.56 Study Coordinates -15.56 46.87 -3274 -48 STUDY NOTES: Provided Keywords: 4.2 ka event, Holocene, Paleoclimatology, Monsoon, ITCZ, Madagascar, Southern hemisphere, speleothems, Stable Isotopes, U-Th Series ABSTRACT SUPPLIED BY ORIGINATOR: The 4.2 ka event at the Mid- to Late-Holocene transition is often regarded as one of the largest and best documented abrupt climate disturbances of the Holocene. The event is most clearly manifested in the Mediterranean and Middle East as a regional dry anomaly beginning abruptly at 4.26 kyr BP and extending until 3.97 kyr BP. Yet the impacts of this regional drought are often extended to other regions and sometimes globally. In particular, the nature and spatial extent of the 4.2 ka event in the tropics have not been established. Here, we present a new stalagmite stable isotope record from Anjohikely, northwest Madagascar. Growing between 5.22 and 2.00 kyr BP, stalagmite AK1 shows a hiatus between 4.31 and 3.93 kyr BP (±40 and ± 35 yrs), replicating a hiatus in another stalagmite from nearby Anjohibe, and therefore indicating a significant drying at the Mid- to Late-Holocene transition. This result is the opposite to wet conditions at the 8.2 ka event, suggesting fundamentally different forcing mechanisms. Dry conditions are also recorded in sediment cores in Lake Malawi, Lake Masoko and the Tatos Basin on Mauritius, also in the southeast African monsoon domain. However, no notable event is recorded at the northern (equatorial East Africa) and eastern (Rodrigues) peripheries of the monsoon domain, while a wet event is recorded in sediment cores at Lake Muzi and Mkhuze Delta to the south. The spatial pattern is largely consistent with the modern rainfall anomaly pattern associated a with weak Mozambique Channel Trough and a northerly austral summer Intertropical Convergence Zone position. Within age error, the observed peak climate anomalies overlap with the 4.2 ka event. However regional hydrological change consistently begins earlier than a 4.26 kyr BP event onset. Gradual hydrological change frequently begins around 4.5 kyr BP, raising doubt as to whether any coherent regional hydrological change is merely coincident with the 4.2 ka event or part of a global climatic anomaly. 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Native Format(s) https://doi.org/10.25921/z5cd-zt47 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/37062 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/speleothem HTTPS Information NCEI Cave Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/speleothem/africa/scroxton2022/scroxton2022-ak1.txt HTTPS Download /speleothem/africa/scroxton2022/scroxton2022-ak1.txt Speleothem download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21