PhD position - Atmospheric Sciences: Development of a multiphase chemical box model for the analysis of chamber and field experiments
Forschungszentrum Jülich

PhD position - Atmospheric Sciences: Development of a multiphase chemical box model for the analysis of chamber and field experiments

  • PhD / Postdoc / Thesis (From 25 to 36 months)
  • Jülich (Germany)
  • Published on September 9 2021
Anthropogenic activities, in particular increasing energy use and production, and natural processes release large quantities of trace substances into the atmosphere influencing living conditions on Earth. At the Institute for Energy and Climate Research, Troposphere (IEK-8), we investigate the chemical and physical processes in the troposphere which have a major impact on the chemical composition of the atmosphere. Processes are studied by field measurements and chamber experiments, where different working groups deal with different aspects, as photochemistry and radicals, reactive trace substances or aerosols. Model activities include the use and development of the Modular Earth Submodel System (MESSy) which allows for chemical studies at highly variable degrees of complexity, i.e. in 0d box model or 3d global and regional chemistry climate simulations. In order to improve the overall understanding of tropospheric chemistry processes, the link between the experimental and the modelling tools should be strengthened.

We are offering a

PhD position - Atmospheric Sciences: Development of a multiphase chemical box model for the analysis of chamber and field experiments

Your Job:

The MESSy software https://www.messy-interface.org/ provides the ideal basis for the application of process description and diagnostics within different kind of models. Mostly MESSy is applied in 3-dimensional global and regional models. In this project the same software will be used and further developed to drive a 0-dimensional model (also called box model) for the analysis of atmospheric chamber experiments. In this way, new findings from the analysis of chamber experiments can be directly applied within the 3d models used with MESSy. Analysing chamber and field experiments with this tool will enable to advance our knowledge in radical chemistry and assess its global impacts on the atmospheric oxidation capacity and aerosol formation.

Your tasks in detail:

  • Starting from a technically working atmospheric chemistry box model, your task will be to further develop the box model in order to provide boundary conditions and include process descriptions relevant for the respective chamber experiments. This could, for example, be the improvement of the multiphase oxidation mechanisms of organic compounds.
  • The aim of this project is to expand an atmospheric chemistry box model with a technical infrastructure for the standardized provision of boundary conditions and driving data and proof its functionality by the analysis of chamber experiments performed at IEK-8. In order to facilitate the analysis of the model results additional on-line diagnostics should be developed and implemented in the MESSy software.


Your Profile:

  • Master degree in chemistry, physics, environmental sciences or a related field (e.g. computer science, mathematics) with good final grade (German system equivalent 2.0 or better)
  • Programming experience is essential. Knowledge of Fortran, experience with Linux/Unix environments as well as with the usage of HPC clusters are of advantage
  • Basic knowledge of (atmospheric) organic chemistry is essential
  • Knowledge of atmospheric sciences is of advantage
  • Good skills in data evaluation using mathematical script routines
  • Ability to work in an international team, good skills in the spoken and written English language


Our Offer:

We work on the very latest issues that impact our society and are offering you the chance to actively help in shaping the change!

We offer ideal conditions for you to complete your doctoral degree:

  • A highly motivated working group as well as an international and interdisciplinary working environment at one of Europe's largest research establishments
  • Outstanding scientific and technical infrastructure
  • Opportunity to participate in (international) conferences and project meetings
  • Continuous scientific mentoring by your scientific advisor
  • Further development of your personal strengths, e.g. via a comprehensive further training programme
  • A structured doctoral degree programme for you and your supervisors with a comprehensive further training and networking package on our doctoral researchers' platform JuDocs https://www.fz-juelich.de/judocs
  • Targeted services for international employees, e.g. through our International Advisory Service

The position is initially for a fixed term of 3 years. Pay above average in line with 67,5 % of pay group 13 of the Collective Agreement for the Public Service (TVöD-Bund) and additionally 60 % of a monthly salary as special payment ("Christmas bonus"). Further information on doctoral degrees at Forschungszentrum Jülich including our other locations is available at: www.fz-juelich.de/gp/Careers_Docs

Forschungszentrum Jülich promotes equal opportunities and diversity in its employment relations.

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