As more natural disasters begin to be linked to Global Change and the World's political powers rely increasingly on scientists to propose solutions, the pressure and urgency to understand the processes affecting Earth's atmospheric system and climate are stronger than ever. In this project, the problems to be studied have been chosen because they are currently limiting the understanding of the contribution of aerosols to Earth's radiative balance and climate. They all focus on the roles of organic matter in atmospheric aerosols at a molecular level. The first part of the project will consist in measuring fundamental quantities describing the reactivity, thermochemistry, cloud formation abilities, and optical properties of organic compounds in atmospheric aerosols, and which are currently lacking. These experiments will benefit from Dr. Nozière's instrumentation and almost unique expertise in this field.
The second part of the project will complement several on-going projects at Stockholm University. Two essential aspects of real atmospheric aerosols, yet hardly studied, will be investigated: the chemical composition of their surface layer, which cannot be accessed by most analytical techniques, and the presence and roles of biological molecules. This second part of the project will bring valuable information on the compounds and processes, which are important for atmospheric aerosols. Together with the results of the first part, they will lead to a much better and more complete picture of the role of aerosols in Earth's radiative balance. The expertise in atmospheric modelling available at the Department of Meteorology of Stockholm University could be used to develop some of these aspects. Finally, establishing connections between biological material and aerosols cycles and radiative properties would lead to a conceptual breakthrough in atmospheric science, where, unlike other disciplines of geosciences, the role of biological material has been largely ignored.
Field of science
- /natural sciences/earth and related environmental sciences/atmospheric sciences
- /natural sciences/chemical sciences/organic chemistry/amines
- /natural sciences/earth and related environmental sciences/physical geography/natural disaster
- /natural sciences/chemical sciences/physical chemistry/thermochemistry
- /social sciences/sociology/governance/crisis management
Call for proposal
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