Objective
Mercury (Hg) is a pollutant of global concern for human and ecosystem health. This is particularly true in the Arctic where indigenous populations are excessively exposed to dietary Hg from fish and marine mammal consumption. The deposition of Hg from the atmosphere to Earth surfaces and its re-emission via biogeochemical reduction processes determine Hg concentrations in Earth surface reservoirs, such as soils, snow, and runoff into Arctic lakes and surface Ocean. In order to predict the impact of anthropogenic Hg emissions on net atmospheric Hg deposition and ultimately Hg concentrations in biota, it is important to understand these deposition and re-emission processes. The reduction of deposited Hg2+ to volatile gaseous Hg0 and the oxidation of gaseous Hg0 to reactive Hg2+, which is rapidly deposited from the atmosphere, control the global fate of Hg. Major knowledge gaps concerning the mechanisms of these redox processes exist.
Different photochemical and non-photochemical Hg2+ reduction mechanisms were found to fractionate Hg stable isotopes in distinct, identifiable ways. Also, different atmospheric Hg0 and Hg2+ pools have been shown to have distinguishable Hg isotope signatures. Hg isotopes can thus provide new insights in the sources of Hg and redox transformation processes at the Earth-atmosphere interface, which are inaccessible by means of concentration and flux measurements alone. In the MEROXRE project proposed here we will combine the latest innovations in gaseous Hg measurements in porous media (soils, snow) with state-of-the-art Hg isotope techniques to investigate:
(i) Hg isotope fractionation of Hg2+ reduction and gaseous Hg0 oxidation in interstitial snow air and soil pores.
(ii) Hg isotope fractionation factors associated with net gaseous Hg0 re-emission fluxes from soil and snow
(iii) the importance of gaseous Hg0 oxidation and Hg2+ reduction and re-emission for the global Hg cycle by incorporating the results in a global Hg isotope model.
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
- natural sciences chemical sciences inorganic chemistry transition metals
- natural sciences biological sciences zoology mammalogy cetology
- natural sciences biological sciences ecology ecosystems
- natural sciences earth and related environmental sciences atmospheric sciences climatology climatic changes
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
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 - Marie Skłodowska-Curie Individual Fellowships (IF)
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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-2014
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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.
75794 PARIS
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.