PhD position: Improving chronologies of Arctic ocean sediments to test hypotheses of past climate changes – Deadline 30 August 2022


Chronology is a key-requirement in order to decipher the triggers and consequences of past climate changes. However, different dating methods applied to different climate archives result in large uncertainties inhibiting a precise comparison and obscuring causalities and dynamics in the climate system.
In this project, we will use the cosmogenic radionuclide 10Be in combination with independent age information to connect marine sediment cores from different locations in the Arctic and North Atlantic to one common timescale at high precision. This will allow us to test hypotheses about major climate changes in the past and improve our understanding of their drivers, dynamics and teleconnections.
For this endeavour, we are seeking a highly motivated and skilled team member for a PhD project, who has a keen interest in geochronology, paleoclimatology and geochemistry.


  • Work on marine sediment cores from various locations in the Arctic Ocean and North Atlantic to prepare and measure 10Be/9Be-samples
  • Investigate geochemical and cosmogenic influences on 10Be/9Be in marine sediments
  • Use the inferred cosmigenic signal to synchronize sediment cores
  • Compile and analyse paleoclimate data from a range of climate archives
  • Infer dynamical relationships between environmental changes in different regions
  • Publish your results in international peer-reviewed journals
  • Present your research at international conferences


  • MSc (or equivalent) in Geosciences or related topics
  • Strong background in geochemistry, (paleo-)climatology, and/or geochronology
  • Strong in data analysis-skills
  • Fluency in English (written/spoken)
  • A strong interest in collaborative research

Additional skills and knowledge

  • Relevant laboratory experience (wet-chemistry, spectrometric methods, column chromatography, geochemical analyses, or similar) is a strong advantage
  • Experience with radiogenic isotopes is an advantage
  • Previous experience in scientific writing will be highly ranked

Further Information

Please contact Dr. Florian Adolphi (; +49(471)4831-1008) for further information.

This position is limited to 3 years. The salary will be paid in accordance with the Collective Agreement for the Public Service of the Federation (Tarifvertrag des öffentlichen Dienstes, TVöD Bund), up to salary level 13 (66%). The place of employment will be Bremerhaven.

All doctoral candidates will be members of AWI’s postgraduate program POLMAR or another graduate school and thus benefit from a comprehensive training program and extensive support measures.

The AWI is characterised by

  • our scientific success – excellent research
  • collaboration and cooperation – intra-institute, national and international, interdisciplinary
  • opportunities to develop – on the job, aiming at other positions and beyond AWI
  • a culture of reconciling work and family – an audited and well-supported aspect of our operation
  • our outstanding research infrastructure – ships, stations, aircraft, laboratories and more
  • an international environment – everyday contacts with people from all over the world
  • having an influence – fundamental research with social and political relevance
  • flat hierarchies – facilitating freedom and responsibility
  • exciting science topics, with opportunities also in technology, administration and infrastructure

Equal opportunities are an integral part of our personnel policy. The AWI aims to increase the number of female employees and therefore strongly encourages qualified women to apply.

Disabled applicants will be given preference when equal qualifications are present.

The AWI fosters the compatibility of work and family in various ways and has received a number of awards as a result of this engagement.

We look forward to your application!

Please submit your application by August 30th 2022, exclusively online.
Reference number 22/123/D/Geo-b

To find out more about this opportunity, click here.

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