 |
| Titel |
Terrestrial climate variability and seasonality changes in the Mediterranean region between 15 000 and 4000 years BP deduced from marine pollen records |
| VerfasserIn |
I. Dormoy, O. Peyron, N. Combourieu Nebout, S. Goring, U. Kotthoff, M. Magny, J. Pross |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1814-9324
|
| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 5, no. 4 ; Nr. 5, no. 4 (2009-10-19), S.615-632 |
| Datensatznummer |
250002692
|
| Publikation (Nr.) |
 copernicus.org/cp-5-615-2009.pdf |
|
|
|
|
|
| Zusammenfassung |
| Pollen-based climate reconstructions were performed on two high-resolution
pollen marines cores from the Alboran and Aegean Seas in order to unravel
the climatic variability in the coastal settings of the Mediterranean region
between 15 000 and 4000 years BP (the Lateglacial, and early to
mid-Holocene). The quantitative climate reconstructions for the Alboran and
Aegean Sea records focus mainly on the reconstruction of the seasonality
changes (temperatures and precipitation), a crucial parameter in the
Mediterranean region. This study is based on a multi-method approach
comprising 3 methods: the Modern Analogues Technique (MAT), the recent
Non-Metric Multidimensional Scaling/Generalized Additive Model method
(NMDS/GAM) and Partial Least Squares regression (PLS). The climate signal
inferred from this comparative approach confirms that cold and dry
conditions prevailed in the Mediterranean region during the Oldest and
Younger Dryas periods, while temperate conditions prevailed during the
Bølling/Allerød and the Holocene. Our records suggest a West/East
gradient of decreasing precipitation across the Mediterranean region during
the cooler Late-glacial and early Holocene periods, similar to present-day
conditions. Winter precipitation was highest during warm intervals and
lowest during cooling phases. Several short-lived cool intervals (i.e. Older
Dryas, another oscillation after this one (GI-1c2),
Gerzensee/Preboreal Oscillations, 8.2 ka event, Bond events) connected to
the North Atlantic climate system are documented in the Alboran and Aegean
Sea records indicating that the climate oscillations associated with the
successive steps of the deglaciation in the North Atlantic area occurred in
both the western and eastern Mediterranean regions. This observation
confirms the presence of strong climatic linkages between the North Atlantic
and Mediterranean regions. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|