[Eoas-seminar] MET Seminar - Thursday April 18 - Dr. Chanil Park (Boston College)

[eoas-seminar at lists.fsu.edu]

Dear all,

Please join us next Thursday April 18 for a Meteorology seminar given by Dr. Chanil Park<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> from Boston College. He will speak about "The multiscale nature of atmospheric rivers" (abstract below)

Dr. Park will be giving the seminar in person in EOAS 1044. If you have a medical excuse or other approved work off-campus, please contact Chelsea Nam (ccnam at fsu.edu) for the Zoom link.

Dr. Park is available for individual meetings on Thursday. If you'd like to meet with him, please contact Chelsea Nam.

DATE: Thursday April 18
SEMINAR TIME: Refreshments at 3 PM, Talk 3:15 - 4:15 PM
SEMINAR LOCATION: EOA 1044 (Speaker in-person)
SPEAKER: Dr. Chanil Park<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>


TITLE: The multiscale nature of atmospheric rivers


ABSTRACT: 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.

We look forward to seeing you there!

---------------
Chaehyeon Chelsea Nam, Ph.D.
Assistant Professor
Department of Earth, Ocean, and Atmospheric Science (EOAS)
Florida State University
RM 5011, ccnam at fsu.edu
https://chelsea-nam.github.io/<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fchelsea-nam.github.io%2F&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7C7fb759e54d794396022708dc5a6f0d12%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638484680211845915%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=99P6dbfVeUDPn33CLFHeArA%2BauaeSzUaJAKdBPT5jfc%3D&reserved=0>



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