NOAA/WDS Paleoclimatology - Northern Morocco Holocene Speleothem d18O Data and Rainfall Index
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title: NOAA/WDS Paleoclimatology - Northern Morocco Holocene Speleothem d18O Data and Rainfall Index
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date: 2019-07-04
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Anchor: DOI doi:10.25921/bpy1-2v80
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code: noaa-cave-27150
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code: NCEI DSI 1200_02
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individualName: Ait Brahim, Y.
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individualName: Sha, L.
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individualName: Cruz, F.W.
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individualName: Sifeddine, A.
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individualName: Sifeddine, A.
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individualName: Bouchaou, L.
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individualName: Bouchaou, L.
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individualName: Spötl, C.
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individualName: Edwards, R.L.
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individualName: Cheng, H.
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abstract: 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 Morocco, Northern Africa. The time period coverage is from 11787 to -58 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
purpose: 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.
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descriptiveKeywords: (MD_Keywords)
keyword: Earth Science > Climate Indicators > Paleoclimate Indicators > Land Records > Cave Deposits
keyword: Earth Science > Climate Indicators > Paleoclimate Indicators > Speleothems
keyword: Earth Science > Paleoclimate > Land Records > Cave Deposits
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date: 2020-01-09
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keyword: earth science > paleoclimate > speleothems
keyword: earth science > paleoclimate > speleothems
keyword: earth science > paleoclimate > climate reconstructions|speleothems
keyword: earth science > paleoclimate > climate reconstructions|speleothems
keyword: earth science > paleoclimate > speleothems
keyword: earth science > paleoclimate > speleothems > oxygen isotopes
keyword: earth science > paleoclimate > reconstructions > precipitation
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keyword: Precipitation Reconstruction
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keyword: What: depth; Material: null
keyword: What: age; Material: null
keyword: What: moisture index; Material: delta 18O
keyword: What: age; Material: null
keyword: What: delta 18O; Material: calcium carbonate
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keyword: Continent > Africa > Northern Africa > Morocco > Chaara Cave > LATITUDE 33.95 > LONGITUDE -4.246
keyword: Continent > Africa > Northern Africa > Morocco > Chaara Cave and Grotte de Piste > LATITUDE > LONGITUDE
keyword: Continent > Africa > Northern Africa > Morocco > Grotte de Piste > LATITUDE 33.84 > LONGITUDE -4.09
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keyword: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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otherConstraints: Cite as: Ait Brahim, Y.; Wassenburg, J.A.; Sha, L.; Cruz, F.W.; Deininger, M.; Sifeddine, A.; Bouchaou, L.; Spötl, C.; Edwards, R.L.; Cheng, H. (2019-07-04): NOAA/WDS Paleoclimatology - Northern Morocco Holocene Speleothem d18O Data and Rainfall Index. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/bpy1-2v80. Accessed [date].
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accessConstraints: (MD_RestrictionCode) otherRestrictions
otherConstraints: 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.
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otherConstraints: 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.
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otherConstraints: 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.
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title: North Atlantic Ice-Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems
date: (CI_Date)
date: 2019
dateType: (CI_DateTypeCode) publication
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individualName: Y. Ait Brahim, J.A. Wassenburg, L. Sha, F.W. Cruz, M. Deininger, A. Sifeddine, L. Bouchaou, Christoph Spotl, R.L. Edwards, H. Cheng
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linkage: https://doi.org/10.1029/2019GL082405
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description: Y. Ait Brahim, J.A. Wassenburg, L. Sha, F.W. Cruz, M. Deininger, A. Sifeddine, L. Bouchaou, Christoph Spotl, R.L. Edwards, H. Cheng, 2019: North Atlantic Ice-Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems. Geophysical Research Letters, 46, 7614-7623, 10.1029/2019GL082405
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extent: (EX_Extent)
description: Date Range: 11787 cal yr BP to -58 cal yr BP;
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westBoundLongitude: -4.246
eastBoundLongitude: -4.09
southBoundLatitude: 33.84
northBoundLatitude: 33.95
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beginPosition: -9837
endPosition: 2008
supplementalInformation: STUDY NOTES: Speleothem oxygen isotope (d18O) data and derived rainfall index for 3 speleothems from Northern Morrocco over the Holocene. Provided Keywords: NAO, Western Mediterranean, North Atlantic ice-rafting ABSTRACT SUPPLIED BY ORIGINATOR: In this study, we present a Holocene rainfall index based on three high-resolution speleothem records from the Western Mediterranean, a region under the influence of the westerly winds belt modulated by the North Atlantic Oscillation (NAO). On centennial to millennial timescales, we show that the North Atlantic ice-rafting events were likely associated with negative NAO-like conditions during the Early Holocene and the Late Holocene. However, our data reveal that this is not clearly the case for the mid-Holocene ice-rafting events, during which we also show evidence of positive NAO-like patterns from other paleo-oceanographic and paleo-atmospheric data. Hence, contradictory mechanisms involving prolonged periods of both north and south shifts of the westerly winds belt (resembling positive and negative NAO-like patterns) might at least partially trigger or amplify the ice-rafting events and the slowdown of the Atlantic Meridional Overturning Circulation.
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fees: 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.
orderingInstructions: Contact NCEI for other distribution options and instructions.
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maintenanceNote: This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21