Environmental Response on Climate Impact in the Levant during the last 200 ka based on a Long Continental Record from the Dead Sea

ICDP Poster Award FOTO lhk quadICDP Colloquium Poster Award:
Chunzhu Chen and Andrea Miebach
Wet Glacials and Dry Interglacials in the Southern Levant? Preliminary Evidence from Pollen Analyses
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Principal Investigators: T. Litt, A. Hense

A key location for assessing paleoclimatological results for the Levant is the Dead Sea basin located at the deepest terrestrial spot on Earth between the Mediterranean climatic zone and the desert belt. During the last application period we focussed on lacustrine records as paleoclimate archives from the Dead Sea, Lake Kinneret and Golan Hights encompassing the last 10 – 15 ka. The present proposal will extend the paleoecological and paleoclimate studies for the Levant region and their wider connections to the eastern corridor region of the CRC806. The major focus of the extension will be locally in time by using a newly derived long continental sedimentary record from the Dead Sea encompassing the last 200 ka. We will apply the methods from the CRC806 phase 1 to reconstruct the paleoclimatic variations of environmental variables like temperature, precipitation or growing degree days in this highly sensitive area based on palynological data. To assess the uncertainty of the reconstructions two additional methods recently developed within the paleoclimate working group will be added. Both are based upon Generalized Linear Models (GLM) applied to the palynological data. The major challenge of the quantitative paleoclimate reconstruction will be the resolution of the transition between glacial and interglacial stages as well as the reconstruction of the rapid changes such as Dansgaard-Oescher cycles, Heinrich events. While the entire Holocene (and as a hypothesis: also the past interglacials) can be classified as a period of relatively small deviation between recent climate conditions, this is obviously not the case for the LGM and the rapid variations during the last as well as the penultimate glacial (no-analogue situation).

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