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Dear all,</div>
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We will have Dr. Chanil Park of Boston College visiting us for the MET seminar tomorrow.</div>
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Dr. Park is an expert in <b>synoptic meteorology, especially on atmospheric river phenomena</b>. </div>
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Chanil's website: <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%7Cc7b859534990431ce9d008dc5ef45248%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638489650633942527%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=FGqiz2TY3mjB1EiT6mHuDJAdgTF%2BkJnZCvD4lM0iOrI%3D&reserved=0" originalsrc="https://sites.google.com/view/chanil-weather/about-me?authuser=0" shash="lZqvNIrJ3MvHnkUna+ktLTgEzJLzkSwFKTZFdpM9MLHAYomwuMb5jjmyAuLsuy7+FSuG58oq+nwkGh0Y+iQWny7ycMYhhzX7u215GCq+DQ0CiKRaLfGGMAfiifW+b1yUdm8xhhdIeSxN1sjFuKAtdwd2THvfxW1W42UpC+mw7UY=" id="LPlnk">
https://sites.google.com/view/chanil-weather/about-me?authuser=0</a></div>
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There are still some open slots for in-person meetings with Dr. Park, so if you're interested in meeting with him, let me know.</div>
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I hope many of you can join the seminar tomorrow!</div>
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Best,</div>
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Chelsea</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%7Cc7b859534990431ce9d008dc5ef45248%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638489650633942527%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=FGqiz2TY3mjB1EiT6mHuDJAdgTF%2BkJnZCvD4lM0iOrI%3D&reserved=0" originalsrc="https://sites.google.com/view/chanil-weather/about-me?authuser=0" shash="lZqvNIrJ3MvHnkUna+ktLTgEzJLzkSwFKTZFdpM9MLHAYomwuMb5jjmyAuLsuy7+FSuG58oq+nwkGh0Y+iQWny7ycMYhhzX7u215GCq+DQ0CiKRaLfGGMAfiifW+b1yUdm8xhhdIeSxN1sjFuKAtdwd2THvfxW1W42UpC+mw7UY=" id="LPlnk" title="https://sites.google.com/view/chanil-weather/about-me?authuser=0" shash="LQDx5Bg9sPgjFjotpeyPXYDV1pmrWZ3JzVtXaJTmQkrz9yYBB/vqMq1qW4MmUwXqKl7wOjuKVl17YaS3OAmcGzPQdVzFeEIUEQItgXoStAxBJyojV4FNp/Boy8IO21EFAkwdyyvWS1zIQgPIMnx6oe73s0Ser3ni87hMd7m0qr8=" originalsrc="https://sites.google.com/view/chanil-weather/about-me?authuser=0" data-auth="Verified">Dr.
Chanil Park</a><b> </b></div>
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<p style="direction: ltr; text-align: left; text-indent: 0px; margin: 0px;"><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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<p style="direction: ltr; text-align: left; text-indent: 0px; margin: 0px;"><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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