Scientist (m, w, div, n.a.) position on multiphase chemistry modeling

Leipzig, 27.03.2026


The Leibniz Institute for Tropospheric Research is a research institute of the Leibniz Association and an internationally renowned institute in the field of aerosol and cloud research.

The Atmospheric Chemistry Department (ACD) undertakes world-leading studies in multiphase atmospheric chemistry including air quality and climate related topics linking state-of-the-art-laboratory work and field experiments through advanced modeling. We are looking for a motivated and productive scientist to work on multiphase chemistry modeling topics. A focus will be on a project on the development and application of chemical mechanisms and its application in atmospheric multiphase models. 

Main Tasks:

  • Development of atmospheric chemical mechanisms with a focus on aerosol, fog and cloud chemistry

  • Apply neural networks with CAPRAM and integrate neural networks into CAPRAM modelling 

  • Summarize, update and continue the existing CAPRAM work on objective chemical reaction mechanism reduction 

  • Conduct numerical intensive CAPRAM modeling in size-resolved mode with emphasis on heterogeneous reactions at the air-liquid water interface described by CAPRAM-HET 

  • Conduct multiphase chemistry simulations with detailed chemical mechanisms and coupled microphysics-chemistry models

  • Complex analyses, processing and visualization of model output data by numerical data analysis languages such as Python, Julia, or R

  • Modeling and interpretation of field measurement data

  • Support the CAPRAM team

  • Interact with the other collaborating scientists, take part in meetings and discussions

  • Write project reports, present the results at scientific international conferences, and publish results in scientific journals

Requirements and Skills:

  • Higher scientific education with at least a Master's or a PhD degree in meteorology, physics, chemistry, environmental sciences, computer science or related disciplines

  • Knowledge in multiphase modeling, neural networks, machine learning, mechanism reduction and size-resolved multiphase chemistry modeling

  • Knowledge in atmospheric chemistry and atmosphere-climate interactions would be beneficial

  • Expertise and experience in numerical modeling including experience with at least one higher programming language (e.g., FORTRAN, C++, …) 

  • Sound knowledge and experience in the use of numerical data analysis languages, e.g. R or Python

  • Knowledge and experience in the use of scripting languages (bash) in Linux/Unix environment as well as in the use of cdo/nco and handling netcdf/hd5 files

  • High intrinsic motivation, ability to work both independently and as well as part of the team

  • Very good written and spoken command of English

  • Very good paper writing skills

  • Willingness and strong motivation to design and write cutting-edge research proposals for the bouquet of national and international funding agencies TROPOS ACD applies to. ECRs are explicitly invited to apply

  • For any questions, feel free to contact Prof. Dr. Hartmut Herrmann (herrmann[at]tropos.de ) or Dr. Sherin Bran (bran[at]tropos.de) 

We offer: 

  • The opportunity to work in the Atmospheric Chemistry Department (ACD) of TROPOS, a vibrant internationally leading and active as well as internationally composed team of atmospheric chemists who will support you in further developing your career

  • Fixed-term contract of 1 year based on TV-L with exciting potential development perspectives in atmospheric chemistry

  • An exciting workplace in the lively city of Leipzig with a multifaceted job in an interdisciplinary work environment and a variety of work-life balance offers as well as flexible working hours and daycare facilities
    TROPOS and TROPOS ACD value the diversity of its employees and pursue the goals of equal opportunity. The institute aims to increase the proportion of women in research and therefore encourages qualified women to apply. People with severe disabilities have priority in hiring if they have the same aptitude, ability, and professional qualifications.

Please send your complete, informative documents in written or electronic form with the keyword: ACD-CAPRAM-NN by April 16th 2026, exclusively electronically to bewerbung[at]tropos.de .

By submitting the application documents by e-mail, the applicant agrees to the storage/processing of personal data in accordance with Art. 13 DSGVO for the purpose of selection for this job advertisement. The risks of sending documents electronically are hereby pointed out.