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Dear all,
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<div>This is a reminder of today’s MET seminar, given by Dr. Rosa Vargas Martes on <i>Governing thermodynamic structure of tropical East Pacific and African Easterly Waves and their representation in CMIP6 models</i></div>
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<div>Talk at 3 pm in 1044 (speaker remote). Join early for snacks!</div>
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<div>See you there!</div>
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<div>Cheers, </div>
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<div>Allison</div>
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Allison A. Wing, Ph.D.</div>
<div>Werner A. and Shirley B. Baum Professor<br>
Associate Professor, Department of Earth, Ocean, and Atmospheric Science<br>
Florida State University<br>
awing@fsu.edu</div>
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<div>On Mar 19, 2025, at 9:28 AM, eoas-seminar--- via Eoas-seminar <eoas-seminar@lists.fsu.edu> wrote:</div>
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<span style="caret-color: rgb(0, 0, 0);">Dear all, </span>
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<div><font>In addition to the Baum Lecture this Friday, we will have a MET seminar next Tuesday March 25.<br>
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<div style="caret-color: rgb(0, 0, 0);">Please join us for next week’s MET seminar on <b>Tuesday March 25 at 3 PM</b>, which will be given by <a href="https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.vargasmartes.com%2F&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7Cbe19e6a96b05462cfe3208dd6b96a419%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638785016909918053%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=Om0nZXJUItJacGnV41tGuGFfcRlhpZAL9CtFaogaW0A%3D&reserved=0" originalsrc="https://www.vargasmartes.com/" originalsrc="https://www.vargasmartes.com/">Dr.
Rosa Vargas Martes</a> who is a postdoctoral scholar here in EOAS and at the University of Toronto. Dr. Vargas Martes will speak about "<i>Governing thermodynamic structure of tropical East Pacific and African Easterly Waves and their representation in CMIP6
models</i>.” (abstract below). </div>
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<div style="caret-color: rgb(0, 0, 0);">Dr. Vargas Martes will be presenting her seminar virtually but we will join together in 1044 to attend the seminar. A Zoom link is available for those with a medical excuse or approved work off-campus. Please contact
Allison Wing (<a href="mailto:awing@fsu.edu">awing@fsu.edu</a>) for the link. </div>
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<div style="caret-color: rgb(0, 0, 0);"><b>DATE: </b>Tuesday March 25</div>
<div style="caret-color: rgb(0, 0, 0);"><b>SEMINAR TIME: </b>3-4 PM, please join early for refreshments </div>
<div style="caret-color: rgb(0, 0, 0);"><b>SEMINAR LOCATION: </b>EOA 1044 (speaker remote)</div>
<div style="caret-color: rgb(0, 0, 0);"><b>SPEAKER: </b><a href="https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.vargasmartes.com%2F&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7Cbe19e6a96b05462cfe3208dd6b96a419%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638785016909938135%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=7UxqkjqMPb1Iq6q0iXR4OFwVvl%2B9bUUQo5%2BM%2BmU9N1A%3D&reserved=0" originalsrc="https://www.vargasmartes.com/" originalsrc="https://www.vargasmartes.com/">Dr.
Rosa Vargas Martes</a></div>
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<div><b style="caret-color: rgb(0, 0, 0);">TITLE: </b><font><span style="caret-color: rgb(0, 0, 0);"><i>Governing thermodynamic structure of tropical East Pacific and African Easterly Waves and their representation in CMIP6 models.</i></span></font></div>
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<div><b style="caret-color: rgb(0, 0, 0);">ABSTRACT: </b><font><span style="caret-color: rgb(0, 0, 0);">The representation of easterly waves (EWs) over the east Pacific Ocean (PEWs) and west Africa (AEWs) in Coupled Model Intercomparison Project phase 6 (CMIP6)
simulations is examined. Models are assessed based on their capability of reproducing PEW-related precipitation in reanalysis. The leading patterns reveal a large spread in the representation of PEW and AEW structure and amplitude. Further comparison of models
with highest (good) and lowest (unrealistically weak) PEW skill and reanalysis showed that good simulations robustly capture the mean state and EWs thermodynamic structure over the east Pacific. Particularly, CMIP6 models capture a more humid mean state when
compared to reanalysis, with good models exhibiting a stronger meridional gradient in specific humidity. The leading structure in good models has a strong pre-existing wave signal from the Caribbean, the lack thereof in unrealistically weak models suggests
that in-situ generation could be taking place. Examination of the precipitation-moisture relationship revealed that CMIP6 simulations were insufficiently sensitive to column moisture. Similarly, models that reproduced realistic and unrealistically strong (highly
and weakly correlated) AEW patterns were chosen for further analysis. Results show that simulations with unrealistically strong AEWs exhibit strong mean state precipitation over the African Monsoon region, stronger anomalous moisture, temperature and moist
static energy, smaller moist convective adjustment timescales, and weaker mean state meridional humidity and moist static energy gradients. PEW and AEW results indicate that EW growth is more consistent with moisture-vortex instability than baroclinic instability.
These results underscore the relevance of the governing thermodynamic drivers in the representation of PEW and AEWs.</span></font></div>
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Allison Wing, Ph.D.<br>
Werner A. and Shirley B. Baum Professor<br>
Associate Professor, Department of Earth, Ocean and Atmospheric Science<br>
Florida State University<br>
<a href="mailto:awing@fsu.edu">awing@fsu.edu</a></div>
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