PhD in Identifying ocean COS and CS2 sources by sulfur stable isotopes

Job description We are looking for a PhD student for an NSF (and BSF) funded project at the Hebrew University of Jerusalem, Institute of Earth Sciences. Project description: Carbonyl sulfide (COS) is the most abundant long-lived sulfur gas in the atmosphere, with a lifetime of a few years. COS is an important source for background stratospheric sulfate aerosols, which have significant control on Earth’s albedo, and hence temperature. COS is used as a promising proxy for terrestrial gross primary production (photosynthesis), which controls atmospheric CO2 concentration, based on the fact that COS largest sink is through terrestrial plant stomata, which also take up CO2. The goal of the current project is to enable a better understanding of ocean COS and CS2 sources and sinks, both on the global and the local scales, through the use of stable isotopes. The research will include measurements of the sulfur isotopes ratio in COS emitted from the ocean, and measurements of the COS isotopic fractionation during different processes. The research will be based on lab experiments, and sampling at sea, in cruises leaving from Israel and the USA. Requirments: The project requires a student with a MSc who is persistent, imitative, and has a broad interest in Earth and ocean Sciences. During the research, the student will use advanced equipment in the lab, and will perform sampling in the field. The study involves the operation of cutting-edge stable-isotopes measurements and other advanced analytical systems. Experience with operating IRMS and/or other hands-on experience with analytical systems is highly desirable. How to apply Please contact Prof. Alon Angert: angert@huji.ac.il