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| Titel |
A seesaw in Mediterranean precipitation during the Roman Period linked to millennial-scale changes in the North Atlantic |
| VerfasserIn |
B. J. Dermody, H. J. Boer, M. F. P. Bierkens, S. L. Weber, M. J. Wassen, S. C. Dekker |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 8, no. 2 ; Nr. 8, no. 2 (2012-03-29), S.637-651 |
| Datensatznummer |
250005474
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| Publikation (Nr.) |
 copernicus.org/cp-8-637-2012.pdf |
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| Zusammenfassung |
| We present a reconstruction of the change in climatic humidity around the
Mediterranean between 3000–1000 yr BP. Using a range of proxy archives and
model simulations we demonstrate that climate during this period was
typified by a millennial-scale seesaw in climatic humidity between Spain and
Israel on one side and the Central Mediterranean and Turkey on the other,
similar to precipitation anomalies associated with the East Atlantic/West
Russia pattern in current climate. We find that changes in the position and
intensity of the jet stream indicated by our analysis correlate with
millennial changes in North Atlantic sea surface temperature. A model simulation
indicates the proxies of climatic humidity used in our analysis were
unlikely to be influenced by climatic aridification caused by deforestation
during the Roman Period. That finding is supported by an analysis of the
distribution of archaeological sites in the Eastern Mediterranean which
exhibits no evidence that human habitation distribution changed since
ancient times as a result of climatic aridification. Therefore we conclude
that changes in climatic humidity over the Mediterranean during the Roman
Period were primarily caused by a modification of the jet stream linked to
sea surface temperature change in the North Atlantic. Based on our findings,
we propose that ocean-atmosphere coupling may have contributed to regulating
Atlantic Meridional Overturning Circulation intensity during the period of analysis. |
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