Studierende finden an der ETH Zürich ein Umfeld, das eigenständiges Denken fördert, Forschende ein Klima, das zu Spitzenleistungen inspiriert.
The Institute of Atmospheric and Climate Science (IAC) at the Department of Environmental System Sciences is one of the world's leading venue for research in atmospheric sciences. The institute offers a comprehensive infrastructure, IT and technical support pertaining to research at all levels.
The Atmospheric Physics group at the Institute for Atmospheric and Climate Sciences invites applications for a 3-year PhD position integrated into a Binational Swiss-French project “AerOsol cloud interactions: the Role of orgAnic compounds in CLoud droplEt activation (ORACLE), funded by the Swiss National Science Foundation (SNSF) and French Research National Agency (ANR).
Cloud droplets in the Earth’s atmosphere form on ubiquitous aerosol particles. Presently, predictions of cloud droplet size and number concentration derived from aerosol properties are still poor, leading to large uncertainties in the radiation budget and climate projections. Cloud droplet activation is conventionally described by Köhler theory. Yet, classical Köhler curves do not include dynamically evolving surface tension and co-condensation of semi-volatile organic compounds during cloud condensation nuclei (CCN) activation. ORACLE aims to fundamentally improve the understanding of the role organics play in CCN activation through combined experimental and modelling work. For this project, the Atmospheric Physics group seeks two PhD students that will collaborate with each other and with the French partners. Two CCN counters with different working principles will be used to test cloud formation on aerosol sampled from a large tank with special emphasis on the role of the organic components and the dynamic equilibrium between gas phase and condensed phase during humidity variations. In addition, instrumentation to analyse the gas phase (CHARON-PTR-MS) and the condensed phase (high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS), filter sampling) will be jointly operated with the French partners.
The successful candidate in addition to holding a MSc (or equivalent) in chemistry, physics, engineering, atmospheric/environmental sciences, or a related field should be interested in aerosol experimental and field observations. Knowledge of oral and written English is required. Data analysis in Igor, Origin, MATLAB, Python or similar software is highly desired, and some knowledge of LabVIEW and aerosol measurement techniques would be an asset, but not necessary.
We look forward to receiving your online application that includes:
Please note that we exclusively accept applications submitted through our online application portal. Applications via email or postal services will not be considered. The project started in February 2021. Due to the pandemic the first call of applicants did not result in a hire. As such we are re-advertising the posion for a start date as soon as possible. Applications will be considered immediately until position is filled.
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