Objective
Air trapped in polar ice cores provides a unique archive of atmospheric composition in the past. However, reactive gases are not stable in ice core air, and therefore no paleo-proxies exist that allow reconstructing the oxidation capacity of the past atmosphere from ice cores. Recent study shows that isotope exchange between highly reactive oxygen atoms (O(3P)) and relatively non-reactive O2 in the atmosphere imprints an isotope signal in the “clumped” isotopic composition of atmospheric O2, which can be a tracer for the abundance of O(3P) in the troposphere. Clumped isotopes are isotopologues containing more than one heavy isotope (e.g. 18O18O), and they are now detectable at high precision using modern technology. I propose here to develop these novel clumped isotope measurements on O2 into a tool to reconstruct the oxidative capacity in the past atmosphere from O2 trapped in firn and ice core air. I will first verify the hypothesis that the large clumped isotope signal originates from fast O(3P)+O2 exchange at low temperatures in the stratosphere, and that this signal is only partially erased by further exchange in the troposphere, where much lower O(3P) and higher temperatures prevail. Clumped isotope analyses on O2 trapped in ice cores will then be used to decipher past variations in atmospheric oxidation processes with a temporal resolution of decades to millennia. I am particularly interested in determining the effects of both natural (glacial-interglacial) climate variability and anthropogenic climate change associated with fossil fuel combustion on oxidation processes in the atmosphere. My experience in the field of clumped isotopes fits perfectly to the expertise of the host group in atmospheric research using isotopes, and the project will make use of the new world-leading high precision isotope ratio mass spectrometer MAT 253 ULTRA facility that will enable measurement of all 6 isotopologues of O2, including the rarest one, 17O17O, for the first time.
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 electrochemistry electrolysis
- engineering and technology environmental engineering energy and fuels
- natural sciences earth and related environmental sciences atmospheric sciences climatology climatic changes
- 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.
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H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions
MAIN PROGRAMME
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H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
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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.
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.
MSCA-IF-EF-ST - Standard EF
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) H2020-MSCA-IF-2016
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
3584 CS Utrecht
Netherlands
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.