Dr. Aline Govin

Research Interests

• History of the deep ocean circulation
• Evolution of African and South American climates
• Focus on the last 150 ka (in particular the Last Interglacial and last glacial inception)
• Paleoclimate proxies: planktic & benthic foraminifera, oxygen & carbon stable isotopes, trace elements (Mg/Ca), major elements (X-ray Fluorescence)

Current research

1. Reconstruct the position of the South American rainbelt and tropical Atlantic surface-water changes at the end of the Last Interglacial (within the EndLIG project).

2. Reconstruct the position of the African rainbelt at the demise of the Last Interglacial (period 130-100 ka). Relationships to deep-water changes in the North Atlantic and Southern Ocean.

3. Assess the factors influencing the geochemical composition of Atlantic hemipelagic sediments (modern times, Last Glacial Maximum).

Projects

EndLIG (DFG Interdynamik priority program): What ends an Interglacial? Feedbacks between tropical rainfall, Atlantic climate and ice sheets during the Last Interglacial.

Past4Future: This European project investigates the climate and environment of past warm periods (interglacials) to inform on future climate and possible abrupt changes.

THOR: Thermohaline Overturning – at Risk?

RETRO: Response of the Tropical Atlantic Surface and Intermediate Waters to Changes in the Atlantic Meridional Overturning Circulation.

Positions

Education

Publications

Published manuscripts

2012

Govin, A., Braconnot, P., Capron, E., Cortijo, E., Duplessy, J. C., Jansen, E., Labeyrie, L., Landais, A., Marti, O., Michel, E., Mosquet, E., Risebrobakken, B., Swingedouw, D., and Waelbroeck, C.: Persistent influence of ice sheet melting on high northern latitude climate during the early Last Interglacial, Clim. Past, 8, 483-507, 10.5194/cp-8-483-2012, 2012. Online paper.

Govin, A., U. Holzwarth, D. Heslop, L. Ford Keeling, M. Zabel, S. Mulitza, J. A. Collins, and C. M. Chiessi, Distribution of major element ratios in Atlantic surface sediments (36°N-49°S): imprint of terrigenous input and continental weathering, Geochem. Geophys. Geosyst., 13, Q01013, 10.1029/2011gc003785, 2012. Online paper.


2011
Guihou, A., S. Pichat, A. Govin, S. Nave, E. Michel, J.-C. Duplessy, P. Telouk, and L. Labeyrie, Enhanced Atlantic Meridional Overturning Circulation supports the Last Glacial Inception, Quaternary Science Reviews, 30, 1576-1582, 2011. Online paper.

2010
Masson-Delmotte, V., B. Stenni, T. Blunier, O. Cattani, J. Chappellaz, H. Cheng, G. Dreyfus, R. L. Edwards, S. Falourd, A. Govin, K. Kawamura, S. J. Johnsen, J. Jouzel, A. Landais, B. Lemieux-Dudon, A. Lourantou, G. Marshall, B. Minster, M. Mudelsee, K. Pol, R. Röthlisberger, E. Selmo, and C. Waelbroeck, Abrupt change of Antarctic moisture origin at the end of Termination II, Proceedings of the National Academy of Sciences, 107, 12091-12094, 2010. Online paper.

Guihou, A., S. Pichat, S. Nave, A. Govin, L. Labeyrie, E. Michel, and C. Waelbroeck, Late slowdown of the Atlantic Meridional Overturning Circulation during the Last Glacial Inception: New constraints from sedimentary (231Pa/230Th), Earth and Planetary Science Letters, 289, 520-529, 2010. Online paper.

2009
Govin, A., E. Michel, L. Labeyrie, C. Waelbroeck, F. Dewilde, and E. Jansen, Evidence for northward expansion of Antarctic Bottom Water mass in the Southern Ocean during the last glacial inception, Paleoceanography, 24, 2009. Online Paper.

Selected participations in conferences

2011
A. Govin, U. Holzwarth, D. Heslop, L. Ford Keeling, M. Zabel, S. Mulitza, J.A. Collins, C.M. Chiessi. Reconstructing modern African and South American precipitation regimes from major element ratios of Atlantic continental margin sediments. French Paleoceanographic Days. Aix-en-Provence (France). Nov 3-4 2011 (Oral).

S. Mulitza, D. Heslop, M. Prange, J. Kuhr, A. Govin, C.M. Chiessi, M. Zabel. Response of Amazon sediment runoff to glacial changes in Atlantic meridional overturning circulation. XIII Abequa Congress. Armação dos Buzios (Brazil). Oct 9-14 2011 (Oral).

A. Govin, U. Holzwarth, D. Heslop, L. Ford Keeling, M. Zabel, S. Mulitza, J.A. Collins, C.M. Chiessi. Tracing African and South American terrigenous input from the modern distribution of major elements in Atlantic surface sediments (35°N-50°S). In Geophysical Research Abstracts (European Geophysical Society), Vol. 13, EGU2011-7253, 2011 (Oral).

2010
A. Govin, J.A. Collins, D. Heslop, S. Mulitza, M. Zabel. Interactions between changes in rainfall over Africa and deep-water changes at high latitudes during the last glacial inception. PAGES workshop on Past Interglacials. Lamont Doherty Earth Observatory (USA). Oct 20-22 2010 (Oral).

A. Govin, J.A. Collins, D. Heslop, S. Mulitza, M. Zabel. Early southward migration of the African rainbelt during the last glacial inception (125-105 ka). 10th International Conference on Paleoceanography. San Diego (USA). Aug 29-Sep 3 2010 (Poster).

T. Bouinot, E. Cortijo, A. Govin, T. Mulder, E. Gonthier. North Atlantic subpolar and subtropical gyres variability during the last 2000 years: a contribution to the THOR project. In Geophysical Research Abstracts (European Geophysical Society), Vol. 12, EGU2010-6402-1, 2010 (Poster).

2009
A. Guihou, S. Pichat, S. Nave, A. Govin, E. Michel, C. Waelbroeck, L. Labeyrie. Opposite export of North Atlantic Deep and Intermediate waters during the Last Glacial Inception. Goldschmidt 2009. Davos (Switzerland). 21-26 June 2009 (Oral).

A. Govin, E. Michel, L. Labeyrie, A. Landais, E. Capron, C. Waelbroeck, and E. Jansen. Deep circulation changes during the last glacial inception: Rapid Southern Ocean response to insolation, preceding North Atlantic deep water changes. In Geophysical Research Abstracts (European Geophysical Society), Vol. 11, EGU2009-13285, 2009 (Poster).

2008
A. Govin, E. Michel, O. Marti, P. Braconnot, E. Capron, E. Jansen, L. Labeyrie, A. Landais, E. Mosquet, B. Risebrobakken, D. Swingedouw, C. Waelbroeck (2008), Continued melting of Greenland ice-sheet regulated Northern Hemisphere climate during the Last Interglacial. Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract PP11A-1367 (Poster).

Expeditions

Responsabilities

2011: Co-organizer of the 2nd Young Scientist Excellence Cluster Conference on Marine and Climate Research : Perspectives from Natural and Social Sciences (University of Bremen, 4-5 October 2011).

Since 2011: Organizer of free German courses for MARUM foreign employees.

Since 2010: Co-organizer of monthly MARUM post-doc meetings with Alice Lefebvre.

2005-2008: Student representative in LSCE Thesis Follow-up Committee.