Contact

 

Dr. Florian A. Ziemen

Max Planck Institute for Meteorology

Bundesstr. 53

20146 Hamburg

Germany

 

Room 129

Phone: +49 40 41173 136

Fax: +49 40 41173 298

florian.ziemen@we dont want spammpimet.mpg.de

Working group: Ocean Physics

Curriculum vitae

PostDoc

since 09/2015 Max Planck Institute for Meteorology

06/2015 - 08/2015 Alfred Wegener Institute for Polar and Marine Research

12/2013 - 12/2014 University of Alaska Fairbanks Geophysical Institute

01/2013-12/2013 Max Planck Institute for Meteorology

Ph.D. thesis

 10/2008-01/2013 Glacial Climate Variability (MPI-M / UHH)

College/University

 09/2008 Diploma in Geophysics at Hamburg University, 2008

Animation

The animation shows results of a coupled ice-climate simulation with mPISM and ECHAM5/MPIOM/LPJ. Colors on the ice show the flow velocity. Shades of blue in the ocean indicate maximum convection depth. The topography is exaggerated by 100. The background photo is from NASA Visible Earth.

The simulation starts 42 000 years before present and ends in the holocene. It is forced with time-varying greenhouse gas concentrations and orbital parameters. The bathymetry of the oceans is adapted to the water input during the deglaciation. The coastlines are kept fixed at the glacial positions. River directions are adapted automatically to the changing topography. A similar setup is presented in Ziemen et al. (2014).

The animation shows a slight ice sheet growth until about 20 000 years before present, followed by the deglaciation at the transition into the holocene. Henrich events manifest in recurring collapses of the Hudson-Bay sector of the Laurentide ice sheet. These events and the global warming and large-scale ice sheet melt during the deglaciation cause a weekening of the deep water formation.

Model experiment: Uwe Mikolajewicz and Florian Ziemen

Visualisation: Florian Ziemen and Niklas Röber (DKRZ).