Objective
Nitrogen (N) is essential for all life on Earth, including phytoplankton living in the surface ocean. As such, the availability of N limits primary productivity across much of the global ocean, exerting a control on the biological carbon pump and climate. Yet, uncertainties in estimates of global N sinks and sources affect our understanding of ocean fertility. Since the N cycle is uniquely mediated by biological processes, an incomplete understanding of ecosystem dynamics limit our ability to quantify nutrient budgets and cycling. Studying N isotopes can fill this knowledge gap, as they provide novel information about ocean circulation, N cycling, and ecosystem change. By combining N isotopes and biogeochemical ocean modeling, this project aims to improve our quantitative understanding of the physical and biological processes controlling the N budget and N recycling in the present and future ocean. I will incorporate N isotopes into MARBL, the ocean biogeochemistry component of the Community Earth System Model. To place additional constraints on the N cycle, I will also add two novel tracers to the model, heterotrophic bacteria and the oxygen isotope ratios of nitrate. Using this framework, I will address the N budget including inter-basin balancing of N loss, and N recycling including the bacterial production of ammonium fueling phytoplankton. I will investigate these themes in the context of both the present day and future ocean to explore the sensitivity of the N cycle to warming and deoxygenation. The recent and rapid expansion of N isotope measurements and measurement facilities over the past five years provide an opportune window in which to develop and validate the state-of-the-art N isotope model. This work will provide coherent interpretations of existing modern and paleoceanographic data and will advance our understanding of the role that the ocean N cycle plays in driving fertility, carbon sequestration, and climate.
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.
- engineering and technology environmental engineering waste management waste treatment processes recycling
- natural sciences earth and related environmental sciences geochemistry biogeochemistry
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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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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
MAIN PROGRAMME
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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.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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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) HORIZON-MSCA-2025-PF
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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.
1012WX Amsterdam
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.