Dr. André Paul

• The MARGO project
• Glacial Ocean Atlas (GOA)
• The dynamic climate: Exploring climate change on laptop or desktop computers

• Reconstruction of past climatic conditions by climate modeling and marine paleo-proxy data synthesis
• Coupled modelling of the climate system
• Direct modelling of paleo-proxy data (oxygen and carbon isotopes)
• Ice-sheet dynamics in the Quaternary and Miocene

and is strongly related to the MARUM - Center for Marine Environmetal Sciences.

Hargreaves JC, Paul A, Ohgaito R, Abe-Ouchi A, Annan JD (2011) Are paleoclimate model ensembles consistent with the MARGO data synthesis? Climate of the Past 7:917-933, www.clim-past.net/7/917/2011/, doi:10.5194/cp-7-917-2011

Morley A, Schulz M, Rosenthal Y, Mulitza S, Paul A, Rühlemann C (2011) Solar modulation of North Atlantic central water formation at multidecadal timescales during the late Holocene. Earth and Planetary Science Letters 308:161-171, doi:10.1016/j.epsl.2011.05.043

Heslop D, Paul A (2011) Fingerprinting of the Atlantic meridional overturning circulation in climate models to aid in the design of proxy investigations. Climate Dynamics, published online: 17 March 2011. doi:10.1007/s00382-011-1042-0

Heslop D, Paul A (2011) Can oceanic paleothermometers reconstruct the Atlantic Multidecadal Oscillation? Climate of the Past 7:151–159, www.clim-past.net/7/151/2011/, doi:10.5194/cp-7-151-2011

Giraud X, Paul A (2010) Interpretation of the paleo–primary production record in the NW African coastal upwelling system as potentially biased by sea level change. Paleoceanography 25:PA4224, doi:10.1029/2009PA001795

Narayan N, Paul A, Mulitza S, Schulz M (2010) Trends in coastal upwelling intensity during the late 20th century. Ocean Science 6:815-823, doi:10.5194/os-6-815-2010

Kageyama M, Paul A, Roche DM, Van Meerbeeck CJ (2010) Modelling glacial climatic millennial-scale variability related to changes in the Atlantic meridional overturning circulation: a review. Quaternary Science Reviews 29:2931-2956, doi:10.1016/j.quascirev.2010.05.029

Langebroek PM, Paul A, Schulz M (2010) Simulating the sea-level imprint on marine oxygen-isotope records during the Middle Miocene using an ice sheet-climate model. Paleoceanography 25:PA4203, doi:10.1029/2008PA001704

Bamberg A, Rosenthal Y, Paul A, Heslop D, Mulitza S, Rühlemann C, Schulz M (2010) Reduced North Atlantic Central Water formation in response to early Holocene ice sheet melting. Geophysical Research Letters, 37, L17705, doi:10.1029/2010GL043878

Dupont LM, Schlütz F, Teboh Ewah C, Jennerjahn TC, Paul A, Behlung H (2010) Two-step vegetation response to enhanced precipitation in Northeast Brazil during Heinrich event 1. Global Change Biology 16:1647-1660, doi: 10.1111/j.1365-2486.2009.02023.x

Langebroek PM, Paul A, Schulz M (2009) Antarctic ice-sheet response to atmospheric CO₂ and insolation in the Middle Miocene. Climate of the Past 5:633-646, http://www.clim-past.net/5/633/2009/

Fraile I, Schulz M, Mulitza S, Merkel U, Prange M, Paul A (2009) Modeling the seasonal distribution of planktonic foraminifera during the Last Glacial Maximum. Paleoceanography 24:PA2216, doi:2210.1029/2008PA001686

Otto-Bliesner BL, Schneider R, Brady EC, Kucera M, Abe-Ouchi A, Bard E, Braconnot P, Crucifix M, Hewitt CD, Kageyama M, Marti O, Paul A, Rosell-Melé A, Waelbroeck C, Weber SL, Weinelt M, Yu Y (2009) A comparison of PMIP2 model simulations and the MARGO proxy reconstruction for tropical sea surface temperatures at last glacial maximum. Climate Dynamics 32:799-815, doi:10.1007/s00382-008-0509-0

MARGO Project Members* (2009): Constraints on the magnitude and patterns of ocean cooling at the Last Glacial Maximum. Nature Geoscience (published online: 18 January 2009), doi:10.1038/ngeo411
*) Waelbroeck C, Paul A, Kucera M, Rosell-Melé A, Weinelt M, Schneider R, Mix AC, Abelmann A, Armand L, Bard E, Barker S, Barrows TT, Benway H, Cacho I, Chen MT, Cortijo E, Crosta X, de Vernal A, Dokken T, Duprat J, Elderfield H, Eynaud F, Gersonde G, Hayes A, Henry M, Hillaire-Marcel C, Huang CC, Jansen E, Juggins S, Kallel N, Kiefer T, Kienast M, Labeyrie L, Leclaire H, Londeix L, Mangin S, Matthiessen J, Marret F, Meland M, Morey AE, Mulitza S, Pflaumann U, Pisias NG, Radi T, Rochon A, Rohling EJ, Sbaffi L, Schäfer-Neth C, Solignac S, Spero H, Tachikawa K, Turon JL

Chiessi CM, Mulitza S, Paul A, Pätzold J, Groeneveld J, Wefer G (2008): South Atlantic interocean exchange as the trigger for the Bølling warm event. Geology 36:919-922, doi:10.1130/G24979A.1. Reprint/Supplementary Material

Franke J, Schulz M, Paul A, J. F. Adkins J (2008): Assessing the ability of the ¹⁴C projection-age method to constrain the circulation of the past in a 3d ocean model. Geochemistry, Geophysics, Geosystems 9, Q08003, doi:10.1029/2008GC001943

Franke J, Paul A, and Schulz M (2008) Modeling variations of marine reservoir ages during the last 45,000 years. Climate of the Past 4:125-136. Reprint/Supplementary Material

Huhn K, Paul A, Seyferth M (2007) Modeling sediment transport patterns during an upwelling event. Journal of Geophysical Research, 112, C10003, doi:10.1029/2005JC003107. Reprint

Marchal O, Jackson C, Nilsson J, Paul A, Stocker T (2007) Buoyancy-driven flow and nature of vertical mixing in a zonally averaged model. In: Andreas  Schmittner, John C. H. Chiang, Sidney R. Hemming (eds.), Ocean Circulation: Mechanisms and Impacts, Geophysical Monograph Series 173, American Geophysical Union, 2007, doi:10.1029/173GM05. Preprint

Mulitza S, Paul A, Wefer G (2006) Late Pleistocene paleoceanographic records of the South Atlantic Ocean. In Elias S A (ed) Encyclopedia of Quaternary Science. Elsevier, pp 1816-1831. Abstract

Sima A, Paul A, Schulz M, Oerlemans J (2006) Modeling the oxygen-isotopic composition of the North American Ice Sheet and its effect on the oxygen-isotopic composition of the ocean during the last glacial cycle. Geophysical Research Letters 33:L15706, doi:10.1029/2006GL026923. Reprint

Paul A, Schäfer-Neth C (2005) How to combine sparse proxy data and coupled climate models. Quaternary Science Reviews 24:1095-1107, doi:10.1016/j.quascirev.2004.05.010. Reprint

Schäfer-Neth C, Paul A, Mulitza S (2005) Perspectives on mapping the MARGO reconstructions by variogram analysis/kriging and objective analysis. Quaternary Science Reviews 24:1083-1093, doi:10.1016/j.quascirev.2004.06.017

Schulz M, Paul A, Timmermann A (2004) Glacial-interglacial contrast in climate variability at centennial-to-millenial timescales: Observations and conceptual model. Quaternary Science Reviews 23:2219-2230, doi:10.1016/j.quascirev.2004.08.014

Matthies M, Bickert T, Paul A (2004) Last glacial δ¹³C distribution and deep-sea circulation in the Atlantic Ocean: A model-data comparison. In Wefer G, Mulitza S, Ratmeyer V (eds) The South Atlantic in the Late Quaternary: Reconstruction of Material Budgets and Current Systems. Springer-Verlag, Berlin, Heidelberg, pp 695-722. Reprint

Mulitza S, Donner B, Fischer G, Paul A, Pätzold J, Segl M (2004) The South Atlantic oxygen-isotope record of planktic foraminifera. In Wefer G, Mulitza S, Ratmeyer V (eds) The South Atlantic in the Late Quaternary: Reconstruction of Material Budgets and Current Systems. Springer-Verlag, Berlin, Heidelberg, pp 121-142

Paul A, Schäfer-Neth C (2004) The Atlantic Ocean at the Last Glacial Maximum: 2. Reconstructing the current systems with a global ocean model. In Wefer G, Mulitza S, Ratmeyer V (eds) The South Atlantic in the Late Quaternary: Reconstruction of Material Budgets and Current Systems. Springer-Verlag, Berlin, Heidelberg, pp 549-583. Reprint

Rühlemann C, Mulitza S, Lohmann G, Paul A, Prange M, Wefer G (2004) Intermediate depth warming in the tropical Atlantic related to weakened thermohaline circulation: Combining paleoclimate data and modeling results for the last deglaciation. Paleoceanography 19, PA1025, doi:10.1029/2003PA000948

Schäfer-Neth C, Paul A (2004) The Atlantic Ocean at the Last Glacial Maximum: 1. Objective mapping of the GLAMAP sea-surface conditions. In Wefer G, Mulitza S, Ratmeyer V (eds) The South Atlantic in the Late Quaternary: Reconstruction of Material Budgets and Current Systems. Springer-Verlag, Berlin, Heidelberg, pp 531-548

Schulz M, and Paul A (2004) Sensitivity of the ocean-atmosphere carbon cycle to ice-covered and ice-free conditions in the Nordic Seas during the Last Glacial Maximum. Palaeogeography, Palaeoclimatology, Palaeoecology 207:127-141

Sima A, Paul A, Schulz M (2004) The Younger Dryas - an intrinsic feature of late Pleistocene climate change at millennial timescales. Earth and Planetary Science Letters 222:741-755

Mulitza S, Boltovskoy D, Donner B, Meggers H, Paul A, Wefer G (2003) Temperature:δ¹⁸O relationships of planktic foraminifera collected from surface waters. Palaeogeography, Palaeoclimatology, Palaeoecology 202:143-152

PaulA, Schäfer-Neth C (2003) Modeling the water masses of the Atlantic Ocean at the Last Glacial Maximum. Paleoceanography, 18 (3), 1058, doi:10.1029/2002PA000783. Reprint

Prange M, Lohmann G, Paul A (2003) Influence of vertical mixing on the thermohaline hysteresis: Analyses of an OGCM. Journal of Physical Oceanography 33:1707-1721

Winter A, Paul A, Nyberg J, Oba T, Lundberg J, Schrag D, Taggart B (2003) Orbital control of low-latitude seasonality during the Eemian. Geophysical Research Letters 30, 1163, doi:10.1029/2002GL016275

Paul A, Schulz M (2002) Holocene climate variability on centennial-to-millennial time scales: 2. Internal feedbacks and external forcings as possible causes. In: Wefer G, Berger WH, Behre K-E, Jansen E (eds) Climate development and history of the North Atlantic Realm. Springer-Verlag, Berlin, pp 55-73

Schulz M, Berger WH, Baillie M, Luterbacher J, Meincke J, Negendank JFW, Paul A, Ramseier RO (2002) Tracing climate-variability: the search for climate dynamics on decadal to millennial time scales. In: Wefer G, Berger WH, Behre K-E, Jansen E (eds) Climate development and history of the North Atlantic Realm. Springer-Verlag, Berlin, pp 125-148

Schulz M, Paul A (2002) Holocene climate variability on centennial-to-millennial time scales: 1. Climate records from the North-Atlantic realm. In: Wefer G, Berger WH, Behre K-E, Jansen E (eds) Climate development and history of the North Atlantic Realm. Springer-Verlag, Berlin, pp 41-54

Schulz M, Paul A, Timmermann A (2002) Relaxation oscillators in concert: A framework for climate change at millennial timescales during the late Pleistocene. Geophysical Research Letters 29 (24), doi:10.1029/2002GL016144

Schäfer-Neth C, Paul A (2001) Circulation of the glacial Atlantic: A synthesis of global and regional modeling. In: Schäfer P, Ritzrau W, Schlüter M, Thiede J (eds) The northern North Atlantic: A changing environment. Springer-Verlag, Berlin, Heidelberg, pp 441-462

Herterich K, Determann S, Grieger B, Hansen I, Helbig P, Lorenz S, Manschke A, Matthies M, Paul A, Schlotte R, Wyputta U (1999) Reconstructing and modelling the Last Glacial Maximum: Beyond CLIMAP. In: Fisher G, Wefer G (eds) Use of Proxies in Paleoceanography: Examples from the South Atlantic. Springer-Verlag, Berlin, Heidelberg, pp 687-714.

Paul A, Berger WH (1999) Climate cycles and climate transitions as a response to astronomical and CO₂ forcings. In: Harff J, Lemke W, Stattegger K (eds) Computerized Modeling of Sedimentary Systems. Springer-Verlag, Berlin, Heidelberg, pp 223-245

Paul A, Mulitza S, Pätzold J, Wolff T (1999) Simulation of oxygen isotopes in a global ocean model. In: Fisher G, Wefer G (eds) Use of Proxies in Paleoceanography: Examples from the South Atlantic. Springer-Verlag, Berlin, Heidelberg, pp 655-686. Reprint

Paul A (1996) A seasonal energy-balance climate model for coupling to ice-sheet models. Annals of Glaciology 23:174-180

Paul A and Richter PH (1994) Application of Greene's method and the MacKay residue criterion to the double pendulum. Zeitschrift für Physik B 93:515-520

Non-refereed journals and newsletters

Paul A and Berger WH (1997) Modellierung der Eiszeiten: Klimazyklen und Klimaübergänge. Geowissenschaften 15:20-27

Rühlemann C, Mulitza S, Lohmann G, Paul A, Prange M, Wefer G (2003) Abrupt warming of the intermediate-depth Atlantic Ocean in response to thermohaline circulation slowdown during the last deglaciation. PAGES News 11 (1):17-19

Paul A, Kull C (2003) Rates of Change. PAGES News 11 (1):2

Paul A, Mulitza S (2004) Simulation of the oxygen isotope ratio in foraminiferal carbonate during Heinrich event 1: A climate model-data comparison. PAGES News 12 (2):15-17. Reprint

Paul A, Mulitza S (2009) Challenges to Understanding Ocean Circulation During the Last Glacial Maximum. Eos, Transactions, American Geophysical Union 90(19):169

Presentations:

A review-type presentation may be downloaded here:

Paul A, Franke J, Kucera M, Mulitza S, Reviewing the proxy-data evidence for the ocean circulation during the LGM, General Assembly of the European Geosciences Union (15-20 April 2007), Vienna (talk, solicited - presentation [pdf, 2.3 MB]/abstract [please cite]).

In 2002, I enjoyed the hospitality of the PAGES program office in Berne, Switzerland. One outcome of that stimulating visit was a "Science Highlight" that deals with the extreme flood event during August of that year:

The August 2002 flood in central Europe: a 'once in a millenium' event?

Furthermore, Cristoph Kull and I edited the April 2003 issue of PAGES news and invited collagues from around the world to come up with estimates on

Rates of Change

         
 E-Mail:           apaul@marum.de 
 Phone:            (+49) (0)421 218 65450 
 Fax:              (+49) (0)421 218 65454

 P.O. Box:         Universität Bremen 
                   Fachbereich 5 - Geowissenschaften 
                   Postfach 33 04 40
                   D-28334 Bremen
                   Germany

 Delivery Address: Universität Bremen 
                   Fachbereich 5 - Geowissenschaften 
                   Klagenfurter Straße
                   Gebäude Geo II - Raum 5510
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                   Germany