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Research Associate for the Project “ICON-4C4M-O” Developing the ocean component of an emission-driven ICON-seamless for CMIP7 applications § 28 Subsection 3 HmbHG

Your responsibilities

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

The project “ICON for coupled carbon cycle climate modelling” (ICON-4C4M) funded through the Extramural Funding programme of the German Weather Service (DWD) aims to integrate state-of-the-art representations of marine (project part ocean at University Hamburg) and terrestrial (project part land at Max Planck Institute for Biogeochemistry; MPI-BGC) biogeochemistry into the ICON Earth system model. The project will contribute to an enhanced representation of key Earth system components in ICON for climate science applications and thereby provide new insights into the transient climate response of the Earth system to anthropogenic emissions.

The project part at Universität Hamburg will have two main foci. The first one will be to enhance the representation of ocean biogeochemical processes and carbon storage in the Hamburg Ocean Carbon Cycle Model (HAMOCC). An advanced representation of the particle sinking scheme, dynamic riverine fluxes, and carbon isotopes in HAMOCC will be tested and calibrated in the coupled ICON ocean-atmosphere framework. The second task will be to incorporate and test the CO2 tracer in the atmospheric component of ICON to enable interactive representation of air-sea and air-land CO2 fluxes and prognostic representation of CO2 concentration the in the atmosphere.

The incumbent will closely collaborate with the Terrestrial Biosphere Modelling group in the Biogeochemical Signals department of MPI-BGC in Jena, as well as with scientists at the DWD to develop a fully interactive carbon cycle for ICON and study carbon-cycle climate feedbacks in the 21st century.

Successful candidate will be part of a vibrant research group working in Earth system modeling focusing on the ocean carbon cycle. Responsibilities will include:

  • evaluate the HAMOCC model, extended by previously developed new processes, on decadal to centennial time scales in the coupled ICON ocean-atmosphere framework
  • analyze ocean carbon storage and carbon-cycle climate feedbacks in simulations following the C4MIP protocol
  • develop and apply an emission-driven configuration of ICON with a fully interactive carbon cycle configuration, in close collaboration with the Terrestrial Biosphere Modelling group in the Biogeochemical Signals department of Prof. Sönke Zaehle at MPI-BGC
  • integrate and test the atmospheric CO2 tracer in the interactively coupled ICON Earth system model
  • disseminating the results through publications in peer-reviewed journals and presentations at conferences

Funding is available for 3 years following an approval of a cost neutral extension.


Your profile

A university degree in a relevant field, plus doctorate.

  • a PhD in oceanography, geoscience, environmental sciences, or a related field is required for this position
  • compelling understanding of ocean biogeochemical dynamics, in particular regarding its role in Earth’s climate
  • experience with ocean carbon cycle models, skill in model development
  • strong programming skills in Fortran, post-processing and visualization software (e.g., python, CDO), as well as experience in handling large data sets
  • strong communication and organizational skills and an ability to effectively communicate results of scientific research to project members and international colleagues

We offer

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Reliable remuneration based on wage agreements
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Continuing education opportunities
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University pensions
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Attractive location
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Flexible working hours
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Work-life balance opportunities
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Health management

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Educational leave

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30 days of vacation per annum

Universität Hamburg—University of Excellence is one of the strongest research educational institutions in Germany. Our work in research, teaching, educational and knowledge exchange activities is fostering the next generation of responsible global citizens ready to tackle the global challenges facing us. Our guiding principle “Innovating and Cooperating for a Sustainable Future” drives collaboration with academic and nonacademic partner institutions in the Hamburg Metropolitan Region and around the world. We would like to invite you to be part of our community to work with us in creating sustainable and digital change for a dynamic and pluralist society.

Severely disabled and disabled applicants with the same status will receive preference over equally qualified non-disabled applicants.


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