PhD Studentship : Investigating the Spatiotemporal Oceanic Uptake and Redistribution of Anthropogenic Carbon and Excess Heat in the Southern Atlantic using Biogeochemical and Transient Tracers., NERC GW4+ DTP PhD Studentship for September 2025
University of Exeter - ESE
| Qualification Type: | PhD |
|---|---|
| Location: | Exeter |
| Funding for: | UK Students, EU Students |
| Funding amount: | £19,237 per annum |
| Hours: | Full Time |
| Placed On: | 21st November 2024 |
|---|---|
| Closes: | 13th January 2025 |
| Reference: | 5409 |
About the Partnership
This project is one of a number that are in competition for funding from the NERC Great Western Four+ Doctoral Training Partnership (GW4+ DTP). The GW4+ DTP consists of the Great Western Four alliance of the University of Bath, University of Bristol, Cardiff University and the University of Exeter plus five Research Organisation partners: British Antarctic Survey, British Geological Survey, Centre for Ecology and Hydrology, the Natural History Museum and Plymouth Marine Laboratory. The partnership aims to provide a broad training in earth and environmental sciences, designed to train tomorrow’s leaders in earth and environmental science. For further details about the programme please see http://nercgw4plus.ac.uk/
Project details
For information relating to the research project please contact the lead Supervisor via M.Messias@exeter.ac.uk
Project Aims and Methods
Understanding and quantifying oceanic uptake of anthropogenic carbon (Cant) and excess heat that has accumulated in the Earth system as a result of human greenhouse gas emissions is crucial for assessing future effects of climate warming. The Southern Ocean (SO) accounts respectively for 40% and 80% of the global oceanic uptake of Cant and excess heat. This disproportionately important role of the SO in controlling these oceanic reservoirs is due to its unique circulation patterns and its role in upwelling oceanic deep waters and forming global intermediate and bottom waters. However, uncertainties still remain about Cant and excess heat uptake histories and redistributions for the poorly sampled deep SO.
The research will reconstruct the historical (1850-2018) Cant and heat content changes along oceanic hydrographic sections using Green’s Functions relating the interior biogeochemical and transient tracers observations to time-and-space surface boundary conditions.
The results will provide insight into 1) the time scales and the dynamics of the ventilation, 2) the uptake and redistribution of Cant and excess heat, and 3) uncertainties from comparisons with other inventories and the Coupled Model Intercomparison Projects Phase. Associated mechanisms linked to ocean warming like ice melt or ecosystem impacts may also be investigated.
Training
The DTP offers funding to undertake specialist training relating to the student’s specialist area of research.
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