Ocean Sciences

Deep oceanic convection: the outsized role of small-scale processes

University of Southampton

Not stated

Location
Southampton, United Kingdom
Funding
INSPIRE studentships (NERC); UKRI standard levels, including recent cost of living increase
Application deadline
See university guidance

About the project

Deep-water formation (convection) at high-latitudes, and more specifically in the Labrador Sea in the subpolar North Atlantic, forms a key part of the large-scale ocean circulation. This enables the exchange of gases between the atmosphere and deep ocean, and thus contributes to the global oceanic sequestration of carbon. In a warming climate, added volumes of freshwater into the Labrador Sea, associated with the increased melting of Greenland ice sheet and of Arctic sea-ice, are expected to reduce or shutdown convection, which would reduce the ocean’s potential to mitigate climate change. In the western Labrador Sea, freshwater is exchanged between the basin boundary and interior due in part to small-scale (submesoscale <10 km) processes. Recent evidence revealed that eddies, sea-ice, and atmospheric (wind and buoyancy) forcing can all influence these small-scale processes. However, high-resolution observations in the Labrador Sea are scarce due to extreme winter conditions. Thus, the mechanisms responsible for the cessation of convection remain poorly understood and are largely neglected by climate models.

This project will use multi-year measurements from autonomous platforms (gliders) to investigate the role of small-scale processes on the cessation of convection. The student will determine the competing effects of eddies, atmospheric forcing, and sea-ice on the lifecycle of convection.

For full project details visit the Inspire project page .

Lead supervisor

  • Doctor Louis Clément (National Oceanography Centre)

Supervisors

  • Doctor Eleanor Frajka-Williams (University of Hamburg)
  • Professor Alberto Naveira Garabato (University of Southampton)
  • Doctor Marilena Oltmanns (National Oceanography Centre)

Potential supervisors

  • Potential supervisors: Lead supervisor Professor Alberto Naveira Garabato Regius Professor of Ocean Sciences

Lead supervisor

  • Lead supervisor: Professor Alberto Naveira Garabato Regius Professor of Ocean Sciences

Professor Alberto Naveira Garabato

  • Professor Alberto Naveira Garabato: Regius Professor of Ocean Sciences

Entry requirements

A 2:1 honours degree, or its international equivalent , in one of these subjects:

  • any numerate discipline
  • ​geophysics
  • mathematics
  • oceanography or marine science
  • physics

Fees and funding

INSPIRE studentships are funded by the Natural Environment Research Council (NERC, part of UK Research and Innovation, UKRI). The stipend is in line with UKRI standard levels, including the recent cost of living increase.

All studentships are fully funded for 3.5 years.

How to apply

To make an application, visit the how to apply section of the INSPIRE website .

Contact us

For questions about the project, contact Doctor Louis Clément:

Email: l.clement@noc.ac.uk

For questions about the application process, contact the graduate school office.

Email: gsnocs@soton.ac.uk

Research areas

Ocean Sciencessciences

Related PhD opportunities

PhD Ocean Sciences

Time variability on turbulent mixing of heat around melting ice in the West Antarctic

University of Southampton

The West Antarctic Peninsula is a highly dynamic region that has undergone significant changes in atmospheric temperature, sea ice and…

Location
Southampton, United Kingdom
Deadline
See university guidance
Funding
INSPIRE studentships; UKRI standard levels, including the recent cost of living increase
PhD Ocean Sciences

The Gulf Stream control of the North Atlantic carbon sink

University of Southampton

The ocean provides a crucial uptake of carbon from the atmosphere, acting to moderate the rise in atmospheric carbon dioxide (CO 2 ) from…

Location
Southampton, United Kingdom
Deadline
See university guidance
Funding
INSPIRE studentships (NERC funded); UKRI standard levels, including recent cost of living increase
PhD Ocean Sciences

Is ocean mixing upside down? How mixing processes drive upwelling in a deep-ocean basin

University of Southampton

Since the seminal work of Walter Munk in the 1960s, oceanographers have believed that the upwelling of cold, abyssal waters that regulates…

Location
Southampton, United Kingdom
Deadline
See university guidance
Funding
INSPIRE studentships (NERC); UKRI standard levels, including the recent cost of living increase