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@ARTICLE{Koutsodendris:21991,
author = {Koutsodendris, A. and Pross, J. and Müller, U.C. and
Brauer, A. and Fletcher, W.J. and Kühl, N. and Kirilova, E.
and Verhagen, F.T.M. and Lücke, A. and Lotter, A.F.},
title = {{A} short-term oscillation during the {H}olsteinian
interglacial ({MIS} 11c): {A}n analogy to the 8.2 ka
climatic event?},
journal = {Global and planetary change},
volume = {92-93},
issn = {0921-8181},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-21991},
pages = {224 - 235},
year = {2012},
note = {We thank J. Fiebig, C. Mangili and B. van de Schootbrugge
for discussions and Antje Voelker for providing SST data
from core MD03-2699. Technical support by D. Berger, M.
Kohler, F. Leistner, S. Liner, J. Mingram and H. Wissel is
gratefully acknowledged. We thank H. Oberhansli and four
anonymous reviewers for their suggestions. This study was
funded by the German Research Foundation and the
Biodiversity and Climate Research Center (BiK-F) of the
Hessian Initiative for Scientific and Economic Excellence
(LOEWE).},
abstract = {To gain insights into the mechanisms of abrupt climate
change within interglacials, we have examined the
characteristics and spatial extent of a prominent,
climatically induced vegetation setback during the
Holsteinian interglacial (Marine Isotope Stage 11c). Based
on analyses of pollen and varves of lake sediments from
Dethlingen (northern Germany), this climatic oscillation,
here termed the "Older Holsteinian Oscillation" (OHO),
lasted 220 years. It can be subdivided into a 90-year-long
decline of temperate tree taxa associated with an expansion
of Pinus and herbs, and a 130-year-long recovery phase
marked by the expansion of Betula and Alnus, and the
subsequent recovery of temperate trees. The climate-induced
nature of the OHO is corroborated by changes in diatom
assemblages and delta O-18 measured on biogenic silica
indicating an impact on the aquatic ecosystem of the
Dethlingen paleolake. The OHO is widely documented in pollen
records from Europe north of 50 degrees latitude and is
characterized by boreal climate conditions with cold winters
from the British Isles to Poland, with a gradient of
decreasing temperature and moisture availability, and
increased continentality towards eastern Europe. This
pattern points to a weakened influence of the westerlies
and/or a stronger influence of the Siberian High. A
comparison of the OHO with the 8.2 ka event of the Holocene
reveals close similarities regarding the imprint on
terrestrial ecosystems and the interglacial boundary
conditions. Hence, in analogy to the 8.2 ka event, a
transient, meltwater-induced slowdown of the North Atlantic
Deep Water formation appears as a plausible trigger
mechanism for the OHO. If correct, meltwater release into
the North Atlantic may be a more common agent of abrupt
climate change during interglacials than previously thought.
We conclude that meltwater-induced climate setbacks during
interglacials preferentially occurred when low rates of
summer insolation increase during the preceding terminations
facilitated the persistence of large-scale continental
ice-sheets well into the interglacials. (C) 2012 Elsevier
B.V. All rights reserved.},
keywords = {J (WoSType)},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Geography, Physical / Geosciences, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000307031000021},
doi = {10.1016/j.gloplacha.2012.05.011},
url = {https://juser.fz-juelich.de/record/21991},
}