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Ph.D. position (f/m/d) Advances in understanding nitrate aerosol formation: Kinetics and missing mechanisms
Veröffentlicht am(vor 86 Tagen)
Forschungszentrum Jülich GmbHJülich
As a member of the Helmholtz Association, Forschungszentrum Jülich makes an effective contribution to solving major challenges facing society in the fields of information, energy, and bioeconomy. It focuses on varied tasks in the area of research management and utilizes large, often unique, scientific infrastructure. Come and work with around 6,100 colleagues across a range of topics and disciplines at one of Europe‘s largest research centres.
The Institute for Energy and Climate Research, Troposphere (IEK-8), investigates the chemical and physical processes in the troposphere that impact the chemical composition of the atmosphere. We are seeking for a new Ph.D. student to work within a three-year program of the Graduate School HITEC (https://www.hitec-graduate-school.de/index.php?index=9). The offered Ph.D. position will be part of the European H2020 Research and Innovation Action "Constrained aerosol forcing for improved climate projections" (FORCeS). FORCeS brings together 20 leading European research teams in order to jointly identify, constrain and efficiently parameterize the most critical processes determining aerosol radiative forcing and aerosol- and cloud-related climate feedbacks.
We are offering a
Ph.D. position: Advances in understanding nitrate aerosol formation: Kinetics and missing mechanisms
Atmospheric aerosols from natural and anthropogenic sources adversely affect human health and play an important role in changing the Earth's climate. Inorganic particulate nitrate constituents contribute significantly to the total aerosol mass, especially in urban areas and industrialised regions (e.g. over Europe they account for about 20% of the total dry aerosol mass). Nitrate is particularly important in the optically active submicron size range, related to its ability to efficiently scatter solar radiation and its potential to affect cloud properties. The Intergovernmental Panel on Climate Change (IPCC) underscored the important role of nitrate aerosol in climate change (IPCC, 2013); however, there is large uncertainty in current models regarding the global nitrate aerosol load, its regional distribution, and its radiative forcing.
Within this Ph.D. project you will address some of the remaining challenges in atmospheric aerosol modelling by:
developing an advance heterogeneous chemistry mechanism, a depreciated formation pathway of aerosol nitrate that is typically missing in current models
determining the kinetic limitations of nitric acid partitioning in the coarse aerosols and its interactions with mineral dust
simulating the formation of organic nitrates from the oxidation of biogenic volatile organic compounds by the nitrate radical
investigating the impact of emission control policies (e.g. reducing SO2, NOx and NH3) on future nitrate aerosol formation
Master‘s degree in physics, chemistry, environmental sciences or a related field
high interest in working in a transdisciplinary collaboration between experts on the process and climate scale
profound programming knowledge in FORTRAN and scripting languages (e.g. Phython)
excellent knowledge of written and oral English
an international and interdisciplinary working environment at one of Europe's largest research establishments
excellent technical facilities, including access to one of the most powerful High Performance Computing centres in Europe
an exciting, transdisciplinary team work within a multinational European project
chance of participating in (international) conferences and project meetings
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