Publikation:

Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater

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Evidence_for_periods_of_wetter_and_cooler_climate_in_the_Sahel_between_6_and_40_kyr_BP_derived_from_groundwater.pdf
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Datum

2003

Autor:innen

Beyerle, Urs
Rueedi, Joerg
Leuenberger, Markus
Aeschbach-Hertig, Werner
Kipfer, Rolf
Dodo, Abdelkader

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URI (zitierfähiger Link)
http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-44271
DOI (zitierfähiger Link)
https://doi.org/10.1029/2002GL016310
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Attribution-NonCommercial-NoDerivs 2.0 Generic

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Open Access Green

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Biologie: Publikationen
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Published

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Geophysical Research Letters. 2003, 30(4), 1173. ISSN 0094-8276. Available under: doi: 10.1029/2002GL016310

Zusammenfassung

Concentrations of noble gases, stable isotopes and 14C in samples from the Continental Terminal groundwaters of Niger provide evidence for more humid and cooler climate phases in West Africa in the Holocene and the late Pleistocene. During humid phases, even within the Holocene, the soil temperature was up to 5.5 degree C cooler than today, which is partly attributed to atmospheric cooling, but also to a change in the relationship between air and soil temperature due to increased vegetation. Intense rainfall events and increased groundwater recharge are consistently indicated by stable isotope data and excess air concentrations, i.e., the component of dissolved atmospheric gases in excess of solubility equilibrium. This finding encourages the use of excess air as an additional, humidity-related climate indicator.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
570 Biowissenschaften, Biologie

Schlagwörter

cooler climate, Sahel, noble gases, groundwater, Holocene

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ISO 690BEYERLE, Urs, Joerg RUEEDI, Markus LEUENBERGER, Werner AESCHBACH-HERTIG, Frank PEETERS, Rolf KIPFER, Abdelkader DODO, 2003. Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater. In: Geophysical Research Letters. 2003, 30(4), 1173. ISSN 0094-8276. Available under: doi: 10.1029/2002GL016310
BibTex
@article{Beyerle2003Evide-7092,
  year={2003},
  doi={10.1029/2002GL016310},
  title={Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater},
  number={4},
  volume={30},
  issn={0094-8276},
  journal={Geophysical Research Letters},
  author={Beyerle, Urs and Rueedi, Joerg and Leuenberger, Markus and Aeschbach-Hertig, Werner and Peeters, Frank and Kipfer, Rolf and Dodo, Abdelkader},
  note={Article Number: 1173}
}
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