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<p class="MsoNormal"><span style="font-size:10.5pt;color:#3C4043;letter-spacing:.15pt;background:white">Woods Hole Oceanographic Institution</span><span style="font-size:10.5pt;color:#3C4043;letter-spacing:.15pt"><br>
<span style="background:white">Biology Department Seminar</span><br>
<span style="background:white">Thursday, November 16, 2023 – 12:00 Noon </span>
<br>
<br>
<b><span style="background:white">Alexandra Jones-Kellett</span></b><br>
<span style="background:white">WHOI-MIT Joint Program Student</span><br>
<br>
<b><span style="background:white">Lagrangian Eddy Trapping Fosters Chlorophyll Hot Spots in the North Pacific Subtropical Gyre </span></b><br>
<span style="background:white">Vertical motions associated with mesoscale ocean eddies modulate the light and nutrient environment, stimulating anomalies in phytoplankton biomass and chlorophyll. Phytoplankton populations can be subsequently trapped by the
horizontal circulation or laterally diluted. In a time-varying flow, Lagrangian methods are needed to qualify eddy trapping, also known as Lagrangian coherency. From two decades of remote sensing observations in the North Pacific Subtropical Gyre, we built
a Lagrangian coherent eddy atlas for biogeochemical applications. We compared the atlas with a coincident Eulerian eddy atlas to assess the impact of eddy trapping on chlorophyll concentration in the surface ocean. We found higher chlorophyll within Lagrangian
coherent boundaries than in Eulerian eddies and outside-eddy waters. Yet, there are differences regionally and seasonally. For example, chlorophyll is most enriched within coherent boundaries of the Hawaiian Lee eddies and to the south of 23N in fall and winter.
Our results suggest that by not accounting for lateral dilution, Eulerian analyses may underestimate the role of mesoscale eddies in enhancing surface chlorophyll.</span><br>
<br>
<span style="background:white">HYBRID! In person: Redfield Auditorium Zoom: </span>
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Meeting ID: 917 6534 2223 By phone: Find your local number: </span><a href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.google.com%2Furl%3Fq%3Dhttps%3A%2F%2Fwhoi-edu.zoom.us%2Fu%2Facd6ltUC75%26sa%3DD%26source%3Dcalendar%26ust%3D1700318547528259%26usg%3DAOvVaw19qSZhnemDi-cpbYRIunB1&data=05%7C01%7Call-postdocs%40whoi.edu%7C230824c6c5534120300808dbe45723e3%7Cd44c5cc6d18c46cc8abd4fdf5b6e5944%7C0%7C0%7C638354835518376126%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=m5DPvb5JnPwzeyqEDUwAxbXuPoSxteJYaHAVb711uII%3D&reserved=0" originalsrc="https://www.google.com/url?q=https://whoi-edu.zoom.us/u/acd6ltUC75&sa=D&source=calendar&ust=1700318547528259&usg=AOvVaw19qSZhnemDi-cpbYRIunB1" shash="arNIqtudpjRqRG9aMerPzqdBgPwq+if8/l05yjiPe8PfThz60yg3JuW2EwpsgY5WPG4c3Dt9gELbsvWuOFgg5hCH3vVxFtecskJYnyU/7K9ea7PTggTx/mvmbWqoxeJmIkjKoBlLZ/nfJPhjxNY5ddjIbw7HE/LTXJNPK01hVRs=" target="_blank"><span style="font-size:10.5pt;color:blue;letter-spacing:.15pt;background:white">https://whoi-edu.zoom.us/u/acd6ltUC75</span></a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For questions, contact:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Century Gothic",sans-serif;color:#4472C4">Ana María Vélez</span></b><span style="font-size:10.0pt;font-family:"Century Gothic",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:black">Administrative Associate</span><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="ES-CO" style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:black">O: 508.289.2334<o:p></o:p></span></p>
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</span><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:black"><a href="mailto:ana.velez@whoi.edu"><span lang="ES-CO">ana.velez@whoi.edu</span></a></span><span lang="ES-CO" style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:black"><o:p></o:p></span></p>
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