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Climate of the Past An interactive open-access journal of the European Geosciences Union
© Author(s) 2006. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
23 Aug 2006
Review status
This discussion paper is a preprint. It has been under review for the journal Climate of the Past (CP). The revised manuscript was not accepted.
Effect of vegetation on the Late Miocene ocean circulation
G. Lohmann1, M. Butzin2, A. Micheels3, T. Bickert3, and V. Mosbrugger3 1Alfred-Wegener-Institut für Polar- und Meeresforschung, Bussestr. 24, 27570 Bremerhaven, Germany
2University of Bremen, P.O. Box 330440, 28334 Bremen, Germany
3Senckenberg Research Institute and Natural History Museum, Senckenberganlage 25, 60325 Frankfurt am Main, Germany
Abstract. A weak and shallow thermohaline circulation in the North Atlantic Ocean is related to an open Central American gateway and exchange with fresh Pacific waters. We estimate the effect of vegetation on the ocean general circulation using the atmospheric circulation model simulations for the Late Miocene climate. Caused by an increase in net evaporation in the Miocene North Atlantic, the North Atlantic water becomes more saline which enhances the overturning circulation and thus the northward heat transport. This effect reveals a potentially important feedback between the ocean circulation, the hydrological cycle and the land surface cover for Cenozoic climate evolution.

Citation: Lohmann, G., Butzin, M., Micheels, A., Bickert, T., and Mosbrugger, V.: Effect of vegetation on the Late Miocene ocean circulation, Clim. Past Discuss.,, 2006.
G. Lohmann et al.
G. Lohmann et al.


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