Doctoral Position in Marine Sciences

Carl Von Ossietzky University of Oldenburg Institute for Chemistry and Biology of the Sea

The Institute for Chemistry and Biology of the Marine Environment (ICBM) of the University of Oldenburg invites applications for

Three doctoral candidates (m/f/d) in the marine sciences

salary according to E13 TV-L, 75 %

starting 01.04.2021 until 31.03.2024

Subject to funding

The ICBM is an interdisciplinary research institute, for fundamental and applied marine research. The internationally renowned institute aims at understanding the function of marine environmental systems through close cooperation of the various scientific disciplines (chemistry, biology, physics, mathematical modelling) of its more than 20 research groups.

The position is part of the third-party funded project ProCarbon (Process studies of the stability and vulnerability of carbon storages in the Baltic and North Seas) in the framework of collaborative project CARBOSTORE (funded by BMBF, MARE:N). Overarching aim of ProCarbon is a process understanding on how different carbon reservoirs in the North and Baltic Seas react to anthropogenic environmental changes.

Position 1 (physical oceanography, theory)

Within this doctoral research project, the candidate has to apply a coupled physical-biogeochemical ocean circulation model to the North Sea region with special focus to the German Bight to simulate the response of different carbon storages to anthropogenic impacts for various atmospheric forcing conditions. In addition, inverse mathematical methods will have to be applied to quantify sources of chemical species based on model simulations and field measurements. Recruitment requirement: We are looking for a scientist (M.Sc. or diploma degree) with experience in mathematical and/or physical modelling with some relations to oceanography and ecology. Additionally, the candidate should have experiences in basic numerical mathematics, programming languages (e.g. FORTRAN, MATLAB or Python), Linux operating systems and parallel cluster environments.

Position 2 (physical oceanography, experimental)

Within this subproject we deploy surface drifters and use ship-based measurements to estimate the CO2 fluxes and budgets on the open sea and coastal waters of the North and Baltic Sea. We also investigate the complex hydrographic circulation patterns affecting gas exchange. The work involves scientific support and maintenance of sensor technology and measurement analytics as well as quality assurance of the data of the time series station near the East Frisian Island of Spiekeroog.

Recruitment requirements: We are looking for a graduate (master’s degree or diploma) in one of the following fields: oceanography, environmental technology or sciences, applied physics, or a related field of study. The candidate needs to be willing to participate in sea-going expeditions. Ideally the candidate has strong expertise in physical oceanography and sensor technology as well as knowledge or training in electrical engineering.

Position 3 (biogeochemistry)

Focus of this doctoral project is the biogeochemistry of dissolved organic sulfur in the North and Baltic Seas. Abiotic sulfurization of organic matter in sulfidic sediments and anoxic basins, and the large-scale distribution and reactivity of dissolved organic sulfur in the ocean will be studied. This entails oceanographic cruises, experiments in the laboratories on land and elemental and molecular analyses, mainly via ultrahigh-resolution mass spectrometry (FT-ICR-MS). The PhD candidate will work closely together with physical oceanographers, mathematical modelers and biologists. Recruitment requirement: Qualifying academic university degree (M.Sc. or equivalent) in Environmental Sciences, Analytical Chemistry or comparable disciplines. Relevant experience in analytical and environmental chemistry is paramount. Familiarity with mass spectrometry is advantageous.

Good communication skills and proficient English skills (written and spoken) are expected from all candidates, as well as the ability to work collaboratively in an international team. The University of Oldenburg is dedicated to increasing the percentage of female employees in the field of science. Therefore, female candidates are strongly encouraged to apply. In accordance to §21 Section 3 NHG female candidates with equal qualifications will be preferentially considered. Applicants with disabilities will be given preference in case of equal qualification.

We offer an excellent research environment in an interdisciplinary, international and dedicated team and provide a family-friendly work environment. We support young researchers in advancing their scientific career and offer training in the university’s graduate school OLTECH.

A more detailed description of each position can be found at

In case of questions regarding this job offer, contact Dr. Karsten Lettmann (position 1, ), Dr. Thomas Badewien (position 2, ) or Prof. Dr. Thorsten Dittmar (position 3, ). Please send your application including cover letter, curriculum vitae, certificates and references in a singledocument by email to using subject "ProCarbon" and position number by 31 January 2021.