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  • 1
    Electronic Resource
    Electronic Resource
    Climatic controls on central African hydrology during the past 20,000 years (2005)
    [s.l.] : Nature Publishing Group
    Nature 437 (2005), S. 1003-1006 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Past hydrological changes in Africa have been linked to various climatic processes, depending on region and timescale. Long-term precipitation changes in the regions of northern and southern Africa influenced by the monsoons are thought to have been governed by precessional variations in summer ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature03945
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    Paper (German National Licenses)
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  • 2
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    North-West African Hydrologic Changes in the Holocene: A Combined Isotopic Data and Model Approach (2015)
    Springer
    In:  EPIC3Integrated Analysis of Interglacial Climate Dynamics (INTERDYNAMIC), (SpringerBriefs in Earth System Sciences), Heidelberg, Springer, 139 p., pp. 109-114, ISBN: 978-3-319-00692-5, ISSN: 2191-589X
    Details
    Publication Date: 2015-02-04
    Description: To achieve a better understanding of the hydrologic evolution of the North-West (NW) African monsoon system during the Holocene, in particular during inferred abrupt climate changes at the end of the African Humid Period (AHP), we investigated terrigenous plant lipids deposited in marine sediments offshore NW Africa. Changes in rainfall amount were estimated by compound-specific hydrogen isotope (δD) analyses. The spatial gradient of rainfall isotopic compositions is reflected in marine surface sediments. δD changes in plant waxes covering the last 100 years confirm the observed decrease in rainfall during the late twentieth century Sahel drought, and thus can be used for a quantitative calibration of δD and pre- cipitation. δD changes in sedimentary plant waxes show no abrupt change at the end of the AHP suggesting a gradual precipitation decline. These results are supported by Holocene climate simulations using a coupled atmosphere-land surface model, which includes an explicit modeling of isotopic fractionation within the hydrological cycle.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , peerRev
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    PAPER (OA)
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