COVID-19 Update: The University has changed its events policy, please check with event organizers before attending on-campus events.

Physical Oceanography Seminar: Dr. Nicholas Foukal

Join us for a seminar from Dr. Nicholas Foukal, Postdoctoral Investigator at the Woods Hole Oceanographic Institution.

Title: Ocean heat transport from the subtropical gyre to the subpolar gyre in the North Atlantic 

Abstract: For decades, the physical oceanographic and climate community has treated the Atlantic meridional overturning circulation (AMOC) and its associated meridional heat transport (MHT) as a source of low-frequency variability in the climate system. Recent results from satellites, basin-wide in situ monitoring arrays, and a range of models have shown that even the AMOC has strong highfrequency variability that needs to be considered when interpreting long-term trends. In addition, it has been shown that the AMOC in the subtropics does not co-vary with the AMOC at subpolar latitudes on monthly to even multidecadal time scales. Thus, it is unclear whether a single measure of the AMOC is sufficient to summarize its variability over the entire North Atlantic. In this talk, I will discuss a series of papers in which we attempt to bring the MHT literature up-to-date with these new results from the AMOC literature. How is heat conveyed from the subtropical Gulf Stream region to the eastern subpolar gyre? Does a coherent SST pathway exist? How does our recent understanding of a sub-surface connection from the subtropical gyre to the subpolar gyre influence how we expect the inter-gyre MHT to operate? We test a series of mechanisms present in the literature using simulated Lagrangian trajectories and satellite data, and then close a heat budget for the eastern subpolar gyre in two ocean circulation models. I will conclude with some thoughts on the implications of our results on seasonalto-interannual climate predictability and on observed ocean temperature variability such as the warming hole in the subpolar North Atlantic.

Friday, February 1, 2019 at 10:30am to 11:30am

Narragansett Bay Campus, Coastal Institute Auditorium University of Rhode Island, Graduate School of Oceanography, 218 South Ferry Road

Event Type



Graduate School of Oceanography



Graduate School of Oceanography
Google Calendar iCal Outlook

Recent Activity