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For those of you who cannot attend in person, here is the zoom link:<br>
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<div class="moz-cite-prefix">On 10/18/2026 9:02 PM, Eric Chassignet wrote:<br>
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<span class="spanWithBackgroundColor" style="background-color: rgb(255, 255, 255);">Please join us for a seminar at 3 pm in Room 1044 Tuesday October 20 by Dr. Nicolo Scapin, who is a candidate for our physical oceanography faculty position. The title and abstract
of his talk are provided below.</span></div>
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<span style="font-size: 12pt;"><b>Title: </b>Small-scale processes at the ocean-atmosphere interface: from interfacial transport to wind-wave interactions</span></div>
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<span style="font-size: 12pt;"><b>Abstract:</b></span></div>
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<span style="font-size: 12pt;">Flows involving droplets, bubbles, and deformable free surfaces play a central role in exchanges of mass, momentum, and energy between the ocean and the atmosphere. Although these flows arise across a wide range of scales, they
share three fundamental features: they are multiphase, involving more than one fluid phase; multiphysics, involving coupled phenomena such as heat and mass transfer; and multiscale, involving a broad range of interacting spatial and temporal scales. In this
talk, I will show how high-fidelity numerical simulations can be used to study these processes and connect small-scale fluid mechanics to larger-scale ocean-atmosphere exchanges. I will first focus on evaporating droplets in turbulence and present an efficient
numerical algorithm that overcomes two major challenges in interface-resolved simulations with phase change: the discontinuity of the velocity field across the two-phase interface and the intrinsic local volume variations induced by evaporation. I will then
turn to multiscale processes at the ocean-atmosphere interface, focusing on wind-forced breaking waves in a regime relevant to tropical cyclones, and show how wave breaking strongly influences the turbulent airflow, modifies the momentum transfer and drag
coefficient, and alters the underwater energy dissipation profile. I will conclude by outlining future research directions aimed at addressing the long-standing question of how sea spray influences air-sea fluxes over complex wave fields, quantifying bubble-mediated
transport, and developing data-driven, physically constrained parameterizations of small-scale air-sea processes for ocean and climate models.</span></div>
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<div class="elementToProof" style="font-family: Tahoma; font-size: 13px;"><span style="color: rgb(153, 153, 153);">Eric Chassignet</span>
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Professor and Director</div>
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Center for Ocean-Atmospheric Prediction Studies (COAPS)</div>
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Florida State University</div>
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2000 Levy Avenue, Building A, Suite 292</div>
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P.O. Box 3062741</div>
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Tallahassee, FL 32306-2741</div>
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Office : (1) 850-645-7288</div>
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Cell : (1) 850-524-0033 (urgent matters only)</div>
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E-mail : <a class="moz-txt-link-abbreviated" href="mailto:echassignet@fsu.edu">echassignet@fsu.edu</a></div>
<div class="elementToProof" style="font-family: Tahoma; font-size: 13px;"><span style="color: rgb(153, 153, 153);"><a href="https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.coaps.fsu.edu%2F&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7Cf0a3867621964b3e998408df2ea9ce9b%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C639280978989778560%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=OAzLA8ZqJcgxNhhOss%2F4YvLHuCQyDs1S1WySkZklskg%3D&reserved=0" originalsrc="http://www.coaps.fsu.edu/" id="OWA82307cb0-b13f-228f-f056-7589325794f6" class="OWAAutoLink moz-txt-link-freetext" style="color: rgb(153, 153, 153);" moz-do-not-send="true">http://www.coaps.fsu.edu</a></span><br>
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<pre class="moz-signature" cols="72"><div style="margin-top: -35px;">
Eric Chassignet
Professor and Director
Center for Ocean-Atmospheric Prediction Studies (COAPS)
Florida State University
2000 Levy Avenue, Building A, Suite 292
P.O. Box 3062741
Tallahassee, FL 32306-2741
Office : (1) 850-645-7288
Cell : (1) 850-524-0033 (urgent matters only)
E-mail : <a class="moz-txt-link-abbreviated" href="mailto:echassignet@fsu.edu">echassignet@fsu.edu</a>
<a class="moz-txt-link-freetext" href="https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.coaps.fsu.edu%2F&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7Cf0a3867621964b3e998408df2ea9ce9b%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C639280978989812991%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=ABz6%2B3lAl8y%2BWOVarbI0NYGo%2FaYxhWpSVJ3fAOMZFLo%3D&reserved=0" originalsrc="http://www.coaps.fsu.edu/">http://www.coaps.fsu.edu</a>
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