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Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater
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| Zeitschriftentitel: | Geophysical Research Letters |
|---|---|
| Personen und Körperschaften: | , , , , , , |
| In: | Geophysical Research Letters, 30, 2003, 4 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
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| Schlagwörter: |
| author_facet |
Beyerle, Urs Rueedi, Joerg Leuenberger, Markus Aeschbach‐Hertig, Werner Peeters, Frank Kipfer, Rolf Dodo, Abdelkader Beyerle, Urs Rueedi, Joerg Leuenberger, Markus Aeschbach‐Hertig, Werner Peeters, Frank Kipfer, Rolf Dodo, Abdelkader |
|---|---|
| author |
Beyerle, Urs Rueedi, Joerg Leuenberger, Markus Aeschbach‐Hertig, Werner Peeters, Frank Kipfer, Rolf Dodo, Abdelkader |
| spellingShingle |
Beyerle, Urs Rueedi, Joerg Leuenberger, Markus Aeschbach‐Hertig, Werner Peeters, Frank Kipfer, Rolf Dodo, Abdelkader Geophysical Research Letters Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater General Earth and Planetary Sciences Geophysics |
| author_sort |
beyerle, urs |
| spelling |
Beyerle, Urs Rueedi, Joerg Leuenberger, Markus Aeschbach‐Hertig, Werner Peeters, Frank Kipfer, Rolf Dodo, Abdelkader 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1029/2002gl016310 <jats:p>Concentrations of noble gases, stable isotopes and <jats:sup>14</jats:sup>C 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°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.</jats:p> Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater Geophysical Research Letters |
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| title |
Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater |
| title_unstemmed |
Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater |
| title_full |
Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater |
| title_fullStr |
Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater |
| title_full_unstemmed |
Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater |
| title_short |
Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater |
| title_sort |
evidence for periods of wetter and cooler climate in the sahel between 6 and 40 kyr bp derived from groundwater |
| topic |
General Earth and Planetary Sciences Geophysics |
| url |
http://dx.doi.org/10.1029/2002gl016310 |
| publishDate |
2003 |
| physical |
|
| description |
<jats:p>Concentrations of noble gases, stable isotopes and <jats:sup>14</jats:sup>C 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°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.</jats:p> |
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| author | Beyerle, Urs, Rueedi, Joerg, Leuenberger, Markus, Aeschbach‐Hertig, Werner, Peeters, Frank, Kipfer, Rolf, Dodo, Abdelkader |
| author_facet | Beyerle, Urs, Rueedi, Joerg, Leuenberger, Markus, Aeschbach‐Hertig, Werner, Peeters, Frank, Kipfer, Rolf, Dodo, Abdelkader, Beyerle, Urs, Rueedi, Joerg, Leuenberger, Markus, Aeschbach‐Hertig, Werner, Peeters, Frank, Kipfer, Rolf, Dodo, Abdelkader |
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| description | <jats:p>Concentrations of noble gases, stable isotopes and <jats:sup>14</jats:sup>C 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°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.</jats:p> |
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| spelling | Beyerle, Urs Rueedi, Joerg Leuenberger, Markus Aeschbach‐Hertig, Werner Peeters, Frank Kipfer, Rolf Dodo, Abdelkader 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1029/2002gl016310 <jats:p>Concentrations of noble gases, stable isotopes and <jats:sup>14</jats:sup>C 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°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.</jats:p> Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater Geophysical Research Letters |
| spellingShingle | Beyerle, Urs, Rueedi, Joerg, Leuenberger, Markus, Aeschbach‐Hertig, Werner, Peeters, Frank, Kipfer, Rolf, Dodo, Abdelkader, Geophysical Research Letters, Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater, General Earth and Planetary Sciences, Geophysics |
| title | Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater |
| title_full | Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater |
| title_fullStr | Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater |
| title_full_unstemmed | Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater |
| title_short | Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater |
| title_sort | evidence for periods of wetter and cooler climate in the sahel between 6 and 40 kyr bp derived from groundwater |
| title_unstemmed | Evidence for periods of wetter and cooler climate in the Sahel between 6 and 40 kyr BP derived from groundwater |
| topic | General Earth and Planetary Sciences, Geophysics |
| url | http://dx.doi.org/10.1029/2002gl016310 |