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<div class="elementToProof" style="font-size: 15px; color: rgb(0, 0, 0);">Dear all, </div>
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Please join us next <b>Thursday April 18</b> for a Meteorology seminar given by <a href="https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsites.google.com%2Fview%2Fchanil-weather%2Fabout-me%3Fauthuser%3D0&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7C7fb759e54d794396022708dc5a6f0d12%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638484680211845915%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=kAvOp%2BGFksT4Jj0MXMd%2FpKC2HLK6vnbHgApXD5WVoMM%3D&reserved=0" originalsrc="https://sites.google.com/view/chanil-weather/about-me?authuser=0" shash="WIjA/8RF2xmEPNas6sRdkrRFQO3PskYGO5AtooKogY3qNO6pLrHgfWO6MpKOB9iw8MiANZnOPIgXhNrtiPWYtde2ZG6rvNj10ZztXX0oudJwCikuMJcXf9AHpoETxap8T7dC0clBbSY7812S21FqZYcKL3UWbPMWkLqY/QoGGYU=" id="LPlnk" title="https://sites.google.com/view/chanil-weather/about-me?authuser=0">
Dr. Chanil Park</a> from Boston College. He will speak about "<i>The multiscale nature of atmospheric rivers</i>" (abstract below) </div>
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<div class="elementToProof" style="color: rgb(0, 0, 0);"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">Dr. Park will be giving the seminar
<b>in person </b>in EOAS 1044. If you have </span><span style="font-family: "Segoe UI Web (West European)", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">a medical
excuse or other approved work off-campus, please contact Chelsea Nam (ccnam@fsu.edu) for the Zoom link.</span></div>
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<span style="background-color: rgb(255, 255, 255);">Dr. Park is available for individual meetings on Thursday. If you'd like to meet with him, please contact Chelsea Nam.</span></div>
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<b>DATE: </b>Thursday April 18</div>
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<b>SEMINAR TIME: </b>Refreshments at 3 PM, Talk 3:15 - 4:15 PM</div>
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<b>SEMINAR LOCATION: </b>EOA 1044 (Speaker in-person)</div>
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<b>SPEAKER: </b><a href="https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsites.google.com%2Fview%2Fchanil-weather%2Fabout-me%3Fauthuser%3D0&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7C7fb759e54d794396022708dc5a6f0d12%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638484680211845915%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=kAvOp%2BGFksT4Jj0MXMd%2FpKC2HLK6vnbHgApXD5WVoMM%3D&reserved=0" originalsrc="https://sites.google.com/view/chanil-weather/about-me?authuser=0" shash="WIjA/8RF2xmEPNas6sRdkrRFQO3PskYGO5AtooKogY3qNO6pLrHgfWO6MpKOB9iw8MiANZnOPIgXhNrtiPWYtde2ZG6rvNj10ZztXX0oudJwCikuMJcXf9AHpoETxap8T7dC0clBbSY7812S21FqZYcKL3UWbPMWkLqY/QoGGYU=" id="LPlnk" title="https://sites.google.com/view/chanil-weather/about-me?authuser=0">Dr.
Chanil Park</a><b> </b></div>
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<span style="font-size: 11pt; color: rgb(0, 0, 0);"><b>TITLE:</b> </span><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"><i>The multiscale nature of atmospheric
rivers</i></span></p>
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<span style="font-size: 11pt; color: rgb(0, 0, 0);"><b>ABSTRACT:</b> </span><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">Atmospheric rivers (ARs) are the filamentary
regions of intense water vapor transport and play a crucial role in regional/global hydrological cycles and local precipitation extremes. The Glossary of the American Meteorological Society describes the AR as “a long, narrow, and transient corridor of strong
horizontal water vapor transport that is typically associated with a low-level jet stream ahead of the cold front of an extratropical cyclone”. In this talk, it will be argued that what we have called ARs do not follow the same one. This is exemplified first
by depicting several AR cases with different parent weather systems and then generalized by using a multiscale index which allows stratifying ARs by the relative importance of high- (HF; periods<10 days) and low-frequency (LF; periods>10 days) moisture transports.
The results show that ARs are associated not only with HF weather systems (i.e., extratropical cyclones) but also with different types of LF anomalies with spatial-seasonally varying fractional contributions. Moreover, ARs with a larger LF contribution are
locally more persistent and thus potentially more hazardous. The multiscale analysis provides valuable insight into AR diversity, which may improve our understanding of their impacts, variabilities, and future changes. In the end, I will briefly introduce
the ongoing study explaining that ARs in East Asia summer are the continuum of extratropical (HF) and monsoonal (LF) moisture plumes.</span></p>
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We look forward to seeing you there!</div>
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Chaehyeon Chelsea Nam, Ph.D.</div>
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Assistant Professor</div>
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Department of Earth, Ocean, and Atmospheric Science (EOAS)</div>
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Florida State University</div>
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RM 5011, ccnam@fsu.edu</div>
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