Objective
The aim of this project is to obtain a quantitative understanding of the chemical and photochemical processes involving halogen oxide species which are implicated in ozone depletion in the stratosphere, specially in the polar regions and at mid-latitudes.
The novel chemical schemes associated with this ozone destruction suggest the important role of species such as Cl0, Cl202, 0Cl0, Br0 through a number of reactions, the kinetics and mechanisms of which are not well established. Measurements of rate coefficients, product branching ratios and photochemical parameters are all involved and will be essentially made at low temperatures. The following topics will be covered:
1. Formation and decomposition of the Cl0 DIMER:
low temperature, low pressure kinetic data for the Cl0 + Cl0 + M reaction and kinetic parameters for the thermal and photolytic decomposition reactions of Cl202.
2. Coupling reactions of X0 and R02 radicals:
kinetic and mechanistic data for the reaction Cl0 + Cl0, Cl0 + CH302 and Br0 + H02.
3. Other relevant reactions:
kinetic and mechanistic data for the X + 02 + M association reactions (X = F,Br) and radical reactions involving Cl0x species.
4. Spectroscopic studies:
UV absorption cross sections of Br0, Br0N02, H0Br, Cl03 and IR spectra of Cl202, Cl203.
All these measurements are expected to be achieved through a combination of complementary experimental methods at the different laboratories to ensure high quality and reliability in the data produced. These data will be of first importance for the models both in their interpretation of field measurements and in their predictive capabilities for future ozone depletion.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences earth and related environmental sciences atmospheric sciences
- natural sciences earth and related environmental sciences environmental sciences ozone depletion
- natural sciences chemical sciences inorganic chemistry halogens
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
45071 ORLEANS
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.