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3 x 1,0 Postdoctoral Positions

From the Last Interglacial to the Anthropocene: Modeling a Complete Glacial Cycle (PalMod-II)

PalMod is funded by the Federal Ministry of Education and Science (BMBF) to understand climate- system dynamics and variability during the last glacial cycle. PalMod aims at simulating a full glacial cycle in transient mode and with comprehensive Earth-System Models which allow full interactions between the physical and biogeochemical components of the Earth system, including ice sheets. PalMod addresses climate variability during the last glacial cycle on a large range of time scales, from interannual to multi-millennial, and attempt to quantify the relative contributions of external forcing and processes internal to the Earth system to climate variability at different time scales. In order to achieve a higher level of understanding of natural climate variability at time scales of millennia, its governing processes and implications for the future climate, PalMod brings together three different research communities: the Earth system modeling community, the proxy data community and the computational science community.

For the second funding phase 2019-2022 (PalMod-II) - under the condition of the grant by the funding party - MARUM at the University of Bremen invites applications for

3 Postdoctoral positions in the fields of ice-sheet and paleoclimate modelling

Positions are for a fixed term of 3 years. The earliest starting date is October 1st, 2019. Salary corresponds to 100% TV-L E13.

1) Coupled climate/ice-sheet simulations of the last deglaciation and the future

The overarching goal of this project is the realization of transient deglacial simulations spanning the last 21 ka with a coupled climate/ice-sheet model. Runs will be extended several millennia into the future. Besides, the project will focus on the timing of the Bølling-Allerød warm phase, which represents special termination conditions associated with an early deglacial AMOC recovery. The simulations will be validated by proxy-model comparison.

2) Coupled climate/ice-sheet simulations of the last glacial inception

This project will study the physical processes that led to the last glacial inception during Marine Isotope Stage (MIS) 5. Transient climate/ice-sheet simulations will be performed for the transition from MIS 5.5 to MIS 5.4 in order to examine the full range of feedback processes that are crucial for the large-scale build-up of ice sheets. Sensitivity experiments will elucidate the roles of orbital versus greenhouse gas forcing in driving the glacial inception. The simulations will be validated by proxy-model comparison.

3) Water-isotope modeling of MIS3, the last deglaciation and the last glacial inception

The aim of the project is a quantitative and process-oriented comparison between model results and paleodata. Transient simulations of selected time periods during Marine Isotope Stage (MIS) 3, the last deglaciation and the last glacial inception will be carried out using a coupled atmosphere-ocean model equipped with water isotopes. Sensitivity experiments will serve to test hypotheses on direct isotope meltwater effects, different isotopic fingerprints of abrupt climate changes and the robustness of isotope-based paleothermometry.

Requirements:

  • Doctoral degree in Physical Oceanography, Meteorology, Glaciology, Geosciences, Physics, Applied Mathematics or a related field.
  • Experience in numerical modeling and scientific computation on high-performance computers.
  • Experience with the Community Earth System Model (CESM) [all positions], the ice-sheet models SICOPOLIS or PISM (or a similar ice-sheet model) [position 1 and 2] and water-isotope modeling [position 3] would be advantageous.
  • Applicants should have a strong interest in paleodata, excellent English language skills and enjoy working in an international and interdisciplinary team.

Applicants should submit under the reference number A168/19 their letter of motivation, a CV including copies of certificates, a publication list, and contact information of two referees.

Documents should be submitted electronically as a single PDF file (maximum size 5 MB) to Dr. Matthias Prange (mprangeprotect me ?!marumprotect me ?!.de). The call is open until the positions are filled. The review of applications will commence on June 17th, 2019.

The University of Bremen is particularly aiming to increase the number of female researchers. Applications from female candidates, international applications and applications of academics with a migration background are explicitly welcome.

In case of equal personal aptitudes and qualification priority will be given to disabled persons.

Further enquiries can be addressed to

[Positions 1 and 2]
Dr. Matthias Prange
MARUM, Universität Bremen
mprangeprotect me ?!marumprotect me ?!.de    

[Position 3]
Dr. André Paul
MARUM, Universität Bremen
apaulprotect me ?!marumprotect me ?!.de

    

 

 

Erstellt am 24.05.19 von Alexandra Gutherz