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Reference : UMR8212-JEAPET-004
Workplace : GIF SUR YVETTE
Date of publication : Tuesday, March 10, 2020
Type of Contract : FTC Technical / Administrative
Contract Period : 12 months
Expected date of employment : 1 June 2020
Proportion of work : Full time
Remuneration : Between 2400 and 2700€ before taxes
Desired level of education : PhD
Experience required : 1 to 4 years
Due to the large variety of sources, precursors and transformation processes, the characterization of Secondary Organic Aerosols (SOA) has become a major scientific challenge, linked to their impact on climate and air quality.
To this respect, oxidation flow reactors (OFR) now allow a better understanding of SOA formation, as well as their physical and chemical properties. This 12-month research engineer position is related to the UNREAL projet (Unveiling Nucleation mechanism in aircraft Engine exhaust and its Link with fuel composition), focusing on the evaluation and characterization of the SOA formed from the combustion of different airplane fuels exposed to OH radical. In particular, the objectives are to:
- Compare simulation chamber and potential aerosol mass (PAM) OFR capabilities regarding SOA formation yield and chemical composition through a large sampling campaign involving different European partners
- Determine the impact of airplane fuel composition on SOA formation
Determine the key precursors in SOA formation
- Study the physicochemical properties of the SOA formed.
The successful candidate will have a key role during the sampling campaign, and will be responsible for the preparation the instrumentation involved (PAM-OFR, ACSM, CPMA, CPC, SMPS, multiwavelength aethalometer, gas analyzers, filter samplings…) with enough preliminary tests, the good performance of the instruments during the experiments. In addition, (s)he will be responsible for the corresponding data analysis, interpretation and valorization of the results.
Candidate should hold a PhD in atmospheric science. Strong experience with Aerosol Mass Spectrometry, and OFR or simulation chamber is highly desirable. Demonstrated skills with Igor Pro software package, or R/Python coding would be appreciated.
The candidate should be keen on working in an international environment. The candidate should be fluent in English.
LSCE is CEA-CNRS-UVSQ laboratory located on the campus of CEA-Orme des Merisiers. It is part of the Institut Pierre Simon Laplace that optimizes the work of several laboratories in the Paris area working in similar themes. There are about 300 people working at LSCE, 150 of which hold permanent positions and several tens are working on a PhD.
The hosting team (CAE) is working on measurements and studies of reactive species (gaseous and aerosols) which can potentially impact health (air quality), ecosystems and more generally climate. Leaded by Valérie Gros, the CAE team aims at characterizing and quantifying their sources, properties and their physicochemical transformations.
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