Dr. Jake Aylmer
Postdoctoral Research Assistant
Arctic summer-time cyclones: dynamics and sea ice interaction
Arctic sea ice can sometimes undergo large-scale retreat on timescales of days–weeks, presenting a challenge to forecasts. These very rapid ice loss events (VRILEs) are thought to be influenced by Arctic cyclones, but the mechanisms are not well understood. Here, the sea ice model CICE—enhanced with state-of-the-art parameterisations incorporated by researchers at Reading—is used to study the processes by which Arctic cyclones affect sea ice loss during VRILEs.
Not all ocean heat transport changes are created equal (2021–2022)
High-resolution ocean simulations with the MITgcm are used to examine the dynamical processes and timescales associated with heat release from the ocean interior to the surface. The aim is to better understand how variability in ocean heat transport impacts climate.
A NERC-funded project with PI David Ferreira.
Ocean heat transport and the latitude of the sea ice edge (2017–2021)
In coupled climate model simulations, ocean heat transport (OHT) is found to be a major driver of the sea ice cover on multidecadal timescales. A highly simplified energy-balance model is developed and used to investigate the factors underlying this relationship. It is found that the emergent behaviour of climate models is captured by the simple model, that there are distinct behaviours of the Arctic and the Antarctic, and simulated future changes in OHT strongly modulate projected sea ice loss.
Aylmer, J. R. ORCID: https://orcid.org/0000-0002-5159-0608 (2022) Ocean heat transport and the latitude of sea ice edge. PhD thesis, University of Reading. doi: https://doi.org/10.48683/1926.00108418
Aylmer, J. ORCID: https://orcid.org/0000-0002-5159-0608, Ferreira, D. ORCID: https://orcid.org/0000-0003-3243-9774 and Feltham, D. (2022) Different mechanisms of Arctic and Antarctic sea ice response to ocean heat transport. Climate Dynamics. ISSN 1432-0894 doi: https://doi.org/10.1007/s00382-021-06131-x
Aylmer, J. ORCID: https://orcid.org/0000-0002-5159-0608, Ferreira, D. and Feltham, D. (2020) Impacts of oceanic and atmospheric heat transports on sea-ice extent. Journal of Climate, 33 (16). pp. 7197-7215. ISSN 1520-0442 doi: https://doi.org/10.1175/JCLI-D-19-0761.1
Last update: 19th November 2022