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Abrupt Climate Changes of the Last Deglaciation Detected in a Western Mediterranean Forest Record : Volume 5, Issue 1 (20/01/2009)

By Fletcher, W. J.

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Book Id: WPLBN0004007051
Format Type: PDF Article :
File Size: Pages 33
Reproduction Date: 2015

Title: Abrupt Climate Changes of the Last Deglaciation Detected in a Western Mediterranean Forest Record : Volume 5, Issue 1 (20/01/2009)  
Author: Fletcher, W. J.
Volume: Vol. 5, Issue 1
Language: English
Subject: Science, Climate, Past
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2009
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Sanchez Goñi, M. F., Peyron, O., Dormoy, I., & Fletcher, W. J. (2009). Abrupt Climate Changes of the Last Deglaciation Detected in a Western Mediterranean Forest Record : Volume 5, Issue 1 (20/01/2009). Retrieved from http://worldebooklibrary.org/


Description
Description: Ecole Pratique des Hautes Etudes, UMR 5805 CNRS EPOC, Université Bordeaux 1, Avenue des Facultés, 33405 Talence, France. Evidence for abrupt changes in western Mediterranean climate between 20 and 6 cal ka BP is examined in marine core MD95-2043 (Alborán Sea), using pollen data for temperate Mediterranean forest development and pollen-based climate reconstructions using the modern analogue technique (MAT) for annual precipitation (Pann) and mean temperatures of the coldest and warmest months (MTCO and MTWA). Major climatic shifts with parallel temperature and precipitation changes occurred at the onsets of Heinrich Event 1 (equivalent to the Oldest Dryas), the Bölling-Allerød (BA), and the Younger Dryas (YD). Multi-centennial-scale oscillations in forest development related to regional precipitation (Pann) variability occurred throughout the BA, YD, and early Holocene, with drier atmospheric conditions in phase with Lateglacial events of high-latitude cooling including GI-1d (Older Dryas), GI-1b (Intra-Allerød Cold Period) and GS-1 (YD), and during Holocene events associated with high-latitude cooling, meltwater pulses and N. Atlantic ice-rafting (events at 11.4, 10.1, 9.3, 8.2 and 7.4 cal ka BP). The forest record also indicates multi-centennial variability within the YD interval and multiple Preboreal climate oscillations. A possible climatic mechanism for the recurrence of dry intervals and an opposed regional precipitation pattern with respect to western-central Europe relates to the dynamics of the jet stream and the prevalence of atmospheric blocking highs. Comparison of radiocarbon and ice-core ages for well-defined climatic transitions in the forest record suggests possible enhancement of marine reservoir ages in the Alborán Sea by ~200 years (surface water age ~600 years) during the Lateglacial.

Summary
Abrupt climate changes of the last deglaciation detected in a western Mediterranean forest record

Excerpt
Arévalo Barroso, A.: Atlas Nacional de España, Sección II, Grupo 9, Climatología, Ministerio de Obras P\'ublicas y Transportes, Dirección General del Instituto Geográfico Nacional, Madrid, 1992.; Bard, E., Arnold, M., Maurice, P., Duprat, J., Moyes., J., and Duplessy, J.-C.: Retreat velocity of the North Atlantic polar front during the last deglaciation determined by $^14$C accelerator mass spectrometry, Nature, 328, 791–794, 1987.; Barry, R. G. and Chorley, R. J.: Atmosphere, weather and climate, Routledge, London, 1998.; Beaudouin, C., Suc, J.-P., Escarguel, G., Arnaud, M., and Charmasson, S.: The significance of pollen signal in present-day marine terrigenous sediments: The example of the Gulf of Lions (western Mediterranean Sea), Geobios-Lyon, 40, 159–172, 2007.; Benabid, A.: Flore et ecosystems du Maroc, Editions Ibis Press, Paris, 2000.; Björck, S., Kromer, B., Johnsen, S., Bennike, O., Hammarlund, D., Lemdahl, G., Possnert, G., Rasmussen, T. L., Wohlfarth, B., Hammer, C. U., and Spurk, M.: Synchronized terrestrial-atmospheric deglacial records around the North Atlantic, Science, 274, 1155–1160, 1996.; Björck, J. and WastegÅrd, S.: Climate oscillations and tephrochronology in eastern middle Sweden during the last glacial-interglacial transition, J. Quaternary Sci., 14, 399–410, 1999.; Bohncke, S. J. P. and Hoek, W. Z.: Multiple Oscillations during the Preboreal as recorded in a calcareous gyttja, Kingbeekdal, The Netherlands, Quaternary Sci. Rev., 26, 1965-1974, 2007.; Bond, G., Showers, W., Cheseby, M., Lotti, R., Almasi, P., Menocla, P., Priore, P., Cullen, H., Hajdas, I. and Bonani, G.: A pervasive millenial-scale cycle in North Atlantic Holocene and glacial climates, Science, 278, 1257–1266, 1997.; Bout-Roumazeilles, V., Combourieu Nebout, N., Peyron, O., Cortijo, E., Landais, A., and Masson-Delmotte, V.: Connection between South Mediterranean climate and North African atmospheric circulation during the last 50 000 yr BP North Atlantic cold events, Quaternary Sci. Rev., 26, 3197–3215, 2007.; Cacho, I., Grimalt, J. O., Pelejero, C., Canals, M., Sierro, F. J., Flores, J. A., and Shackleton, N. J.: Dansgaard-Oeschger and Heinrich event imprints in Alborán Sea temperatures, Paleoceanography, 14, 698–705, 1999.; Cacho, I., Grimalt, J. O., Canals, M., Sbaffi, L., Shackleton, N., Schönfeld, J. and Zahn, R.: Variability of the western Mediterranean Sea surface temperature during the last 25 000 years and its connection with the northern hemisphere climatic changes, Paleoceanography, 16, 40–52, 2001.; Cacho, I., Shackleton, N., Elderfield, H., Sierro, F. J., and Grimalt, J. O.: Glacial rapid variability in deep-water temperature and δ18O from the Western Mediterranean Sea, Quaternary Sci. Rev., 25, 3294–3311, 2006.; Cao, L., Fairbanks, R.G., Mortlock, R.A., and Risk, M.J.: Radiocarbon reservoir age of high latitude North Atlantic surface water during the last deglacial, Quaternary Sci. Rev., 26, 732–742, 2007.; Carlson, A. E., Clark, P. U., Haley, B. A., Klinkhammer, G. P, Simmons, K., Brook, E. J., and Meissner, K. J.: Geochemical proxies of North American freshwater routing during the Younger Dryas cold event, P. Natl. Acad. Sci. USA, 104, 6556–6561, 2007.; Carrión, J. S.: Patterns and processes of Late Quaternary environmental change in a montane region of southwestern Europe, Quaternary Sci. Rev., 21, 2047–2066, 2002.; Clark, P. U., Marshall, S. J., Clarke, G. K. C., Hostetler, S. W., Licciardi, J. M., and Teller, J. T.: Freshwater Forcing of Abrupt Climate Change During the Last Glaciation, Science, 293, 283–287, 2001.; Combourieu-Nebout, N., Paterne, M., Turon, J.-L., and Siani, G.: A high-resolution record of the last deglaciation in the central Mediterranean Sea: Palaeovegetation and palaeohydrological evolution, Quaternary Sci. Rev., 17, 303–317, 1998.; Guiot, J.: Methodology of the last climatic cycle reconstruction from pollen data, Palaeogeogr. Palaeocl., 80, 49–69, 1990.; Dansgaard, W., Johnsen, S. J.

 

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