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Dataset Overview | National Centers for Environmental Information (NCEI)

NOAA/WDS Paleoclimatology - Northern Morocco Holocene Speleothem d18O Data and Rainfall Index

browse graphicPaleoclimatology - Speleothem
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.
  • 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].
  • Please refer to Credit tab for full citation information.
noaa-cave-27150
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Distributor NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact Data Center Contact
NOAA World Data Service for Paleoclimatology
828-271-4800
paleo@noaa.gov
Coverage Description Date Range: 11787 cal yr BP to -58 cal yr BP;
Time Period -9837 to 2008
Spatial Bounding Box Coordinates
West: -4.246
East: -4.09
South: 33.84
North: 33.95
Spatial Coverage Map
General Documentation
Associated Resources
  • North Atlantic Ice-Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems
    • Associated Reference published 2019
      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
Publication Dates
  • publication: 2019-07-04
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Data update frequency not available
Supplemental Information
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.
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.
Dataset Citation
  • 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].
  • 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.
Cited Authors
  • Ait Brahim, Y.
  • Wassenburg, J.A.
  • Sha, L.
  • Cruz, F.W.
  • Deininger, M.
  • Sifeddine, A.
  • Bouchaou, L.
  • Spötl, C.
  • Edwards, R.L.
  • Cheng, H.
Originators
  • Ait Brahim, Y.
  • Wassenburg, J.A.
  • Sha, L.
  • Cruz, F.W.
  • Deininger, M.
  • Sifeddine, A.
  • Bouchaou, L.
  • Spötl, C.
  • Edwards, R.L.
  • Cheng, H.
Publishers
  • NOAA National Centers for Environmental Information
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Climate Indicators > Paleoclimate Indicators > Land Records > Cave Deposits
  • Earth Science > Climate Indicators > Paleoclimate Indicators > Speleothems
  • Earth Science > Paleoclimate > Land Records > Cave Deposits
Global Change Master Directory (GCMD) Science Keywords
  • earth science > paleoclimate > speleothems
  • earth science > paleoclimate > speleothems
  • earth science > paleoclimate > climate reconstructions|speleothems
  • earth science > paleoclimate > climate reconstructions|speleothems
  • earth science > paleoclimate > speleothems
  • earth science > paleoclimate > speleothems > oxygen isotopes
  • earth science > paleoclimate > reconstructions > precipitation
  • Precipitation Reconstruction
Paleoenvironmental Standard Terms (PaST) Thesaurus
  • What: depth; Material: null
  • What: age; Material: null
  • What: moisture index; Material: delta 18O
  • What: age; Material: null
  • What: delta 18O; Material: calcium carbonate
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Place keywords
  • Continent > Africa > Northern Africa > Morocco > Chaara Cave > LATITUDE 33.95 > LONGITUDE -4.246
  • Continent > Africa > Northern Africa > Morocco > Chaara Cave and Grotte de Piste > LATITUDE > LONGITUDE
  • Continent > Africa > Northern Africa > Morocco > Grotte de Piste > LATITUDE 33.84 > LONGITUDE -4.09
Use Constraints
  • 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].
  • 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.
  • 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.
Access Constraints
  • 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.
  • None
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.
Last Modified: 2023-09-01
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