DFG-Leibniz Center for Surface Process and Climate Studies

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Sascha Serno

Leibniz Center for Surface Process and Climate Studies at Universität Potsdam
via
Lamont-Doherty Earth Observatory of the Columbia University
Comer Building, Office # 431
61 Route 9W
Palisades, NY 10964-8000
United States of America
sserno @ ldeo.columbia.edu
Phone: +1 845-365-8569
Fax: +1 845-365-8150

Research Interests and current Ph.D. project

I’m strongly interested in paleoclimatology and paleoceanography. As an undergraduate student, I attended a lot of paleoclimatic- and paleoceanographic-oriented classes both at the University of Potsdam and UCL London. During my work as a student assistant at the GFZ Potsdam and my diploma thesis advised by Dr. Helge W. Arz, I have performed a multi-proxy approach on marine sediment cores from the southern Chilean fjord system to reconstruct local paleoenvironmental changes as well as changes of the Southern Westerlies. Further, I have prepared samples for measurements from the Black Sea during my work as a student and research assistant at the GFZ Potsdam.
In my current Ph.D. project, I’m working with Gisela Winckler and Bob Anderson from the Lamont-Doherty Earth Observatory of the Columbia University (LDEO). I will reconstruct modern and past dust flux and biological productivity changes during the last deglaciation in the subarctic North Pacific. The goal is to reconstruct the principal factor regulating climate-related changes in export production in the HNLC region of the subarctic North Pacific.
Due to remaining uncertainties in the interpretation of productivity proxies, the lack of solid dust records from the subarctic North Pacific and problems with the dating of marine sediments from the North Pacific, the INOPEX (Innovative North Pacific Experiment; program leader: Rainer Gersonde, AWI Bremerhaven) program offers a unique opportunity to gain information about climatic changes in the subarctic North Pacific within a broader context of a large interdisciplinary program. During the INOPEX-SO202 cruise in July and August 2009, sediment cores were drilled from 45 stations across the subarctic North Pacific and Bering Sea.
In the course of the work, I will measure 4He and 232Th for the dust reconstruction, 230Th for normalizing sedimentary fluxes, REEs to quantify contributions of fine-grained loess and volcanic material in the sediments, and xsBa contents used a productivity proxy. Additionally, colleagues from the LDEO and AWI Bremerhaven will measure water samples, microfossil assemblages, stable nitrogen and silicon isotopes, organic carbon, opal and biomarkers. The 230Th-flux normalization will also be used for these proxies. At the end, the different productivity proxies will be compared to get a better idea of the reliability and interpretation of the same.

Education

Since 04/2010
Ph.D. student in Geology, University of Potsdam via Lamont-Doherty Earth Observatory of the Columbia University, Palisades, NY, USA. Advisors: Prof. G.H. Haug (ETH Zürich and University of Potsdam), Prof. Dr. Gisela Winckler and Prof. Robert F. Anderson (both LDEO)

12/2009
Diploma in Geology, University of Potsdam (Germany)
Thesis: “Late glacial and Holocene palaeoenvironmental changes in the southern Chilean fjord system: A multi-proxy study of high resolution marine sediment cores”, advised by Dr. Helge W. Arz (GFZ Potsdam)

09/2006 – 06/2007
ERASMUS exchange student at the University College London (UCL), UK

2003 – 2009
University of Potsdam (Germany); Studies in Geology, with minors in Palaeoenvironmental change and Geophysics

Professional Experience

01/2010 – 02/2010
Research assistant at the GFZ Potsdam, Section 5.2, Advisor: Dr. Helge W. Arz

March 2009
Three-week scientific cruise in the southern Chilean fjords with focus on Palaeoceanography and Palaeolimnology

10/2007 – 12/2009
Student assistant at the GFZ Potsdam, Section 5.2 (former Section 3.3), Advisor: Dr. Helge W. Arz

Manuscripts in Preparation

Serno, S., Arz, H.W., Lamy, F., Caniupán, M., and Kilian, R. (in prep.) Holocene changes of the Southern Westerlies on centennial- to multi-millennial timescales inferred from southern Chilean fjord sediment records.

Talks

Geochemistry Seminar, Lamont-Doherty Earth Observatory of the Columbia University, Palisades, NY. May 19, 2010. Holocene changes of the Southern Westerlies inferred from southern Chilean fjord sediment records.

Conference Contributions

Serno, S., Hayes, C., Winckler, G., and Anderson, R.F. (2010) Deciphering past and modern linkages between dust influx, biological productivity and climate change in the Subarctic North Pacific. Workshop DUSTSPEC: Dustrecords for a changing world, Lamont-Doherty Earth Observatory of the Columbia University, Palisades, NY, USA. May 24-26, 2010. Poster

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