Objective
In addition to peroxy and alkoxy radicals, carbonyl (i. e. substituted acetyl) radicals (R-C=O) are important short-lived radical intermediates in the atmospheric degradation of volatile organic compounds. In order to supply atmospheric modellers with the necessary input data, rate parameters for reactions of these radicals are needed. The principal reaction pathways of carbonyl radicals are either thermal decomposition or addition of O2, leading to different product distributions and thus affecting the amount of ozone formation.
In this project, state-of-the-art experimental methods are applied to quantify the branching ratio of these two pathways for a number of atmospherically important carbonyl radicals. Since thermal decomposition of R-CO generally exhibits much stronger temperature dependence as compared to O2 addition, the branching ratio of these pathways is also strongly temperature dependent. For this reason, variable temperature is an important feature of the planned experiments.
The addition pathway leads to substituted acetylperoxy radicals. For a small number of these radicals, reaction rate constants for their reactions with NO, N02, and H02 will also be determined. The effect on atmospheric chemistry of the rate parameters coming out of this project will be tested by sophisticated box model calculations. The most important radical reactions will then be implemented into a new regional atmospheric chemistry model (RACM) in order to give an account of the influence of these R-CO radicals on atmospheric chemistry. It is expected that inclusion of the experimental data from this project into atmospheric chemistry models will considerably improve the predictions about radical balances and ozone formation in the troposphere which form the basis for future ozone control strategies.
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 chemical sciences organic chemistry volatile organic compounds
- natural sciences earth and related environmental sciences atmospheric sciences meteorology troposphere
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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.
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.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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.
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
70569 Stuttgart
Germany
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.