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Nicole Shibley, Department of Earth and Planetary Sciences, Yale University
Monday 16 November 2020, 13:00-14:00
Double-Diffusive Convection in the Arctic Ocean
- 👤 Speaker: Nicole Shibley, Department of Earth and Planetary Sciences, Yale University
- 📅 Date & Time: Monday 16 November 2020, 13:00 - 14:00
- 📍 Venue: Zoom webinar - link to follow
Abstract
Double diffusion is a type of mixing process that may arise in the oceans where temperature and salinity determine density gradients. Active double-diffusive convection manifests as stacked well-mixed water layers, forming a staircase structure. The Arctic Ocean exhibits a prominent double-diffusive staircase which indicates how deep-ocean heat is mixed upward toward the sea ice. In this talk, I will discuss a one-dimensional mathematical model to examine how this double-diffusive heat transport may be influenced by mechanical mixing, or turbulence, such as that driven by winds and waves. I will also discuss how a 15-year observational record of the Arctic’s thermocline displays a shift in double-diffusive staircase structure under Arctic warming.
Series This talk is part of the Quantitative Climate and Environmental Science Seminars series.
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