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NOAA/WDS Paleoclimatology - Northeast African Precipitation and Vegetation Biomarker Data over the last 4.5 million years

browse graphicPaleoclimatology - Climate Reconstruction
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 Climate Reconstruction. The data include parameters of climate reconstructions|paleoceanography with a geographic location of Mediterranean Sea, North Atlantic Ocean. The time period coverage is from 4427000 to 11500 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: Lupien, R.L.; Uno, K.; Rose, C.; deRoberts, N.; Hazan, C.; deMenocal, P.B.; Polissar, P.J. (2023-09-20): NOAA/WDS Paleoclimatology - Northeast African Precipitation and Vegetation Biomarker Data over the last 4.5 million years. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/rv33-6e75. Accessed [date].
  • Please refer to Credit tab for full citation information.
noaa-recon-38561
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DistributorNOAA 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 DescriptionDate Range: 4427000 cal yr BP to 11500 cal yr BP;
Time Period-4425050 to -9550
Spatial Bounding Box Coordinates
N: 34.0712
S: 33.7961
E: 32.7008
W: 32.7255
Spatial Coverage Map
General Documentation
Associated Resources
  • Low-frequency orbital variations controlled climatic and environmental cycles, amplitudes, and trends in northeast Africa during the Plio-Pleistocene
    • Associated Reference published 2023
      Rachel L. Lupien, Kevin T. Uno, Cassaundra Rose, Nicole deRoberts, Cole Hazan, Peter de Menocal, Pratigya Polissar, 2023: Low-frequency orbital variations controlled climatic and environmental cycles, amplitudes, and trends in northeast Africa during the Plio-Pleistocene. Nature Communications: Earth & Environment, 4, , 10.1038/s43247-023-01034-7
Publication Dates
  • publication: 2023-09-20
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress StatusComplete - production of the data has been completed
Data Update Frequency Data update frequency not available
Supplemental Information
STUDY NOTES: Leaf wax hydrogen and carbon isotope records from an Eastern Mediterranean sediment core to demonstrate precipitation and vegetation of northeast African over the last 4.5 million years. Coordinates for S1: 966A: 33.7966, 32.7016 966B: 33.7961, 32.7015 966C: 33.7963, 32.7015 966D: 33.7965, 32.7008 967A: 34.0683, 32.7254 967B: 34.0682, 32.7254 967C: 34.0712, 32.7255 967D: 34.0709, 32.7255 Provided Keywords: Paleoclimate, Northeast Africa, Organic geochemistry, Biomarkers, Precipitation, Human Evolution
ABSTRACT SUPPLIED BY ORIGINATOR: The eastern Mediterranean sapropels, paced by insolation, provide a unique archive of African monsoon strength over the Late Neogene. However, the longer-term climate of this region lacks characterization within the context of changes in ice volume, sea surface temperature gradients, and terrestrial ecosystems. Here, we examine C28 n-alkanoic acid leaf wax hydrogen and carbon isotopes in sapropels, sourced from northeast Africa, along with vegetation-corrected precipitation isotopes, derived from astronomically dated sediment cores from ODP 160 Sites 966 and 967 since 4.5 million years ago. Despite sampling only wet-phase sapropels for African monsoon variability, we find a larger range in hydrogen isotopes than previously published data across wet-dry precession cycles, indicating the importance of long-term modulation of Green Sahara phases throughout the Neogene. An influence of orbital properties on regional monsoonal hydroclimate is observed, controlling up to 50% of total hydrogen isotope variance, but large changes outside of these typical frequencies account for at least 50% of the total variance. This secular trend may track changes in ice volume, tropical sea surface temperature, sea surface temperature gradients, or even lower-frequency orbital cycles. Long-term hydroclimate and environmental shifts provide new contexts for milestone events in northeast African hominin dispersal and evolution.
PurposeRecords of past temperature, precipitation, and other climate variables derived from paleoclimate proxies. Parameter keywords describe what was measured in this data set. Additional summary information can be found in the abstracts of papers listed in the data set citations.
Dataset Citation
  • Cite as: Lupien, R.L.; Uno, K.; Rose, C.; deRoberts, N.; Hazan, C.; deMenocal, P.B.; Polissar, P.J. (2023-09-20): NOAA/WDS Paleoclimatology - Northeast African Precipitation and Vegetation Biomarker Data over the last 4.5 million years. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/rv33-6e75. 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
  • Lupien, R.L.
  • Uno, K.
  • Rose, C.
  • deRoberts, N.
  • Hazan, C.
  • deMenocal, P.B.
  • Polissar, P.J.
Originators
  • Lupien, R.L.
  • Uno, K.
  • Rose, C.
  • deRoberts, N.
  • Hazan, C.
  • deMenocal, P.B.
  • Polissar, P.J.
Publishers
  • NOAA National Centers for Environmental Information
Theme keywordsGlobal Change Master Directory (GCMD) Science Keywords
  • Earth Science > Climate Indicators > Paleoclimate Indicators > Paleoclimate Reconstructions
Global Change Master Directory (GCMD) Science Keywords
  • earth science > paleoclimate > climate reconstructions|paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > climate reconstructions|paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > climate reconstructions|paleoceanography
  • earth science > paleoclimate > reconstructions
  • earth science > paleoclimate > reconstructions > precipitation
Paleoenvironmental Standard Terms (PaST) Thesaurus
  • What: age; Material: null
  • What: delta 13C; Material: C28 n-alkanoic acid
  • What: delta 13C; Material: C28 n-alkanoic acid
  • What: delta 2H; Material: C28 n-alkanoic acid
  • What: delta 2H; Material: precipitation
  • What: delta 2H; Material: C28 n-alkanoic acid
  • What: depth; Material: null
Data Center keywordsGlobal 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
  • Ocean > Atlantic Ocean > North Atlantic Ocean > Mediterranean Sea > ODP 160 Sites 966 and 967 > LATITUDE > LONGITUDE
Use Constraints
  • Cite as: Lupien, R.L.; Uno, K.; Rose, C.; deRoberts, N.; Hazan, C.; deMenocal, P.B.; Polissar, P.J. (2023-09-20): NOAA/WDS Paleoclimatology - Northeast African Precipitation and Vegetation Biomarker Data over the last 4.5 million years. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/rv33-6e75. 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
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Last Modified: 2024-02-01
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