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Heves Pilatin

Institution: University of Bremen
Office: MARUM
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Other webpage(s): Heves' MARUM web page

 

Heves Pilatin

PhD Project

Ocean Circulation and Its Impact on Mixing Processes during the Last Glacial Maximum

In this project, the Last Glacial Maximum (LGM) period of Earth history will be investigated. The objective is to estimate the oxygen availability and spatial dissipation of tidal energy in the deep ocean by providing a realistic representation of ocean mixing. LGM was the most recent time of the last ice age that occurred 23,000 to 19,000 years before the present. It was one of the ancient climates when the ice sheets and glaciers were at their maximum extent. The climate was cold and dry, sea level was ~130 m lower than today. The ventilation and oxygenation in the deep ocean were highly reduced (deoxygenation) due to the weaker and shallower North Atlantic Deep Water.


In my project, I will focus on the internal wave caused mixing to simulate the ocean circulation and the oxygen and carbon cycles during LGM period. Within this scope, I will use the Internal Wave Dissipation, Energy and Mixing (IDEMIX) model which is an energy-consistent framework where the energy dissipated from an internal wave is transferred to turbulent kinetic energy without any spurious sources or sinks. As the state of the art of project, the isotope – enabled Community Earth System Model (iCESM1.2) will be used. This model will be simulated with/without isotopes and with/without IDEMIX to find the oxygen levels and tidal dissipation of energy for the LGM and pre-industrial times.

Thesis Committee

Prof. Dr. Michael Schulz University of Bremen
Dr. André Paul University of Bremen
Dr. Friederike Pollmann University of Hamburg
Prof. Dr. Jin-Song Von Storch Max Planck Institute for Meteorology
Dr. Oliver Gutjahr University of Hamburg