Postdoctoral Fellow in Computational Mathematics

Postdoctoral Fellow in Computational Mathematics
Stockholm University
Stockholm, Sweden
Project description
We are seeking a highly motivated postdoctoral researcher to improve and analyse time-stepping schemes for simulations of glacial ice dynamics. The motivation is the need for more reliable predictions of how ice sheets and glaciers respond to climate change. The project builds on a stabilization method that allows much larger time-steps than previously possible. Thanks to the stabilization, step length is now limited by accuracy rather than numerical stability, but there is still little rigorous understanding of how accuracy depends on time-step size, which varies substantially over the course of a simulation. The project's aim is twofold: to deepen the theoretical understanding of the stabilized scheme, and to translate this understanding into a practical, adaptive algorithm that automatically selects the largest time-step preserving the desired accuracy. The successful candidate will have the opportunity to shape the research direction and contribute both methodologically and computationally.
Main responsibilities
The postdoctoral researcher is expected to further develop theory for the convergence of the stabilized time-stepping scheme, work that involves analysing a free-boundary problem coupled to the Stokes equations. Building on this theory, the postdoctoral researcher will construct an adaptive algorithm, implement and test the methods in the established ice-sheet modelling tool Elmer/Ice, and carry out numerical experiments with application to, for example, the Ryder Glacier in northern Greenland. Duties also include collaborating with researchers in glaciology, authoring scientific papers, and presenting results at international conferences.
Qualification requirements
In order to qualify for a Postdoctoral position, applicants are required to hold a Swedish doctoral degree or an equivalent relevant degree from another country. The degree must have been completed no later than when the employment decision is made.
Assessment criteria
It is considered an advantage if the doctoral degree or an equivalent degree was completed no more than three years prior to the application deadline. Under special circumstances, an older degree may also be an advantage. Special circumstances refer to sick leave, parental leave, elected positions in trade unions, service in the total defense, or other similar circumstances, as well as clinical attachment or service/assignments relevant to the subject area.
Applicants must have a foreign doctoral degree, i.e. a doctoral degree obtained at an institution outside Sweden, or a degree deemed equivalent to this.
Applicants should have a strong background in numerical analysis or scientific computing and experience with time-stepping methods and the finite element method (FEM), preferably applied to fluid dynamics, solid mechanics, or other moving-boundary problems. Prior experience with Earth-science applications is an advantage but not required — domain-specific knowledge can be acquired within the group. Strong communication skills and an interest in interdisciplinary collaboration, for example with geophysics and glaciology, are highly valued.
In the appointment process, special attention will be given to research skills and the relevance of the candidate's scientific background.
Apply Now
Deadline 15 October
Don't forget to mention EuroScienceJobs when applying.
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Stockholm University