From eoas-seminar at lists.fsu.edu Wed Dec 2 09:44:03 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 2 Dec 2020 14:44:03 +0000 Subject: [Eoas-seminar] Meteorology PhD Defense for Allison Brannan, Thursday, December 10, 2020, 2:00 PM on zoom https://fsu.zoom.us/j/96174470780 Message-ID: Meteorology Seminar Allie Brannan PhD Meteorology Candidate Title: An Analysis of the Extratropical Flow Response to Recurving Atlantic Tropical Cyclones Co-Major Professors: Dr. Jeffrey Chagnon & Dr. Robert Hart Date: December 10th, 2020 Time: 2:00 PM Location: Zoom Meeting: https://fsu.zoom.us/j/96174470780 ABSTRACT Previous case studies have noted a significant extratropical flow response to recurving Atlantic tropical cyclones (TCs), which is often linked to extreme weather events downstream. This study examines the modification of Rossby waves on the extratropical jet in response to recurving Atlantic TCs from both climatological and predictability perspectives. Changes in amplitude and location of Rossby waves are identified using a wavelet decomposition technique on isentropic potential vorticity. The climatology demonstrates that recurving Atlantic TC events are capable of modifying the amplitude of the extratropical flow. The nature of the extratropical flow response is most strongly tied to the average translation speed of the TC relative to the Rossby wave over the 72 hours following recurvature. The ability of Atlantic recurving TCs to significantly modify the amplitude of downstream Rossby waves motivates the investigation into whether the predictability of the extratropical flow is also affected by the TC and its Rossby wave relative speed. Predictability is evaluated as the standard deviation of isentropic potential vorticity among a 50-member ensemble and is compared to climatology. This study found subsets of recurvature cases that contain areas of significantly modified ensemble spread which were anchored in time and space to the recurvature of the TC. It is shown that forecast uncertainty is dependent upon the location of the nearest trough at the time of recurvature and the relative speed between the TC and the Rossby wave train after recurvature. Predictability is significantly degraded when recurvature occurs downstream of a trough; the elevated uncertainty subsequently propagates downstream along with the trough axis. An analysis in spectral space demonstrates that the increase in uncertainty is not solely attributed to the trough location, as there is also significantly elevated uncertainty in the Rossby wave amplitude across downstream troughs and ridges. Uncertainty is enhanced in locations where baroclinic growth processes are most pronounced, specifically where the TC and upper-level trough are optimally phased. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Dec 3 10:01:56 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 3 Dec 2020 15:01:56 +0000 Subject: [Eoas-seminar] MET seminar series by Dr. Truchelut on Thursday, Dec. 3, 2020, at 3:30 PM In-Reply-To: References: Message-ID: A reminder of today?s seminar at 3:30 PM with Dr. Ryan Truchelut, an alum of the FSU Meteorology program and co-founder of WeatherTiger, a private weather and climate consulting company here in Tallahassee. This is our last meteorology seminar of the semester. Graduate students, please stay after the seminar for a Q & A session with the speaker on work/life/career topics. Hope to see you all there! https://fsu.zoom.us/j/95792371181?pwd=QzFLQWZjOXozSXFtZlNnQThmbkNVQT09 On Nov 30, 2020, at 11:40 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear colleagues, Here we announce that Dr. Ryan Truchelut, an alumnus (PhD '15) of FSU meteorological program, will be the speaker of this week's MET seminar. The title, abstract, and Zoom link are as the following: Title: From the "Weather Guy" to WeatherTiger: Explorations in Scientific Entrepreneurship Abstract: Career decisions in meteorology often are perceived along lines of binary choice. Academia or forecasting? Research or teaching? Public or private sector? And yet, more options than these exist for those who take a "Choose Your Own Adventure" approach to the weather profession. FSU meteorology alumni Dr. Ryan Truchelut (PhD '15) will discuss the path in scientific entrepreneurship that he has followed in co-founding WeatherTiger, a weather and climate consulting company, in a talk that like the start-up life itself, is a mix of research, operations, finance, cat herding, memoirs, and attempted dad humor. The Zoom link: https://fsu.zoom.us/j/95792371181?pwd=QzFLQWZjOXozSXFtZlNnQThmbkNVQT09. A flyer of his talk is also attached. Best, Zhaohua _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Dec 3 15:29:14 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 3 Dec 2020 20:29:14 +0000 Subject: [Eoas-seminar] MET seminar series by Dr. Truchelut on Thursday, Dec. 3, 2020, at 3:30 PM In-Reply-To: References: Message-ID: Starting in 1 minute! On Dec 3, 2020, at 10:01 AM, eoas-seminar--- via Eoas-seminar > wrote: A reminder of today?s seminar at 3:30 PM with Dr. Ryan Truchelut, an alum of the FSU Meteorology program and co-founder of WeatherTiger, a private weather and climate consulting company here in Tallahassee. This is our last meteorology seminar of the semester. Graduate students, please stay after the seminar for a Q & A session with the speaker on work/life/career topics. Hope to see you all there! https://fsu.zoom.us/j/95792371181?pwd=QzFLQWZjOXozSXFtZlNnQThmbkNVQT09 On Nov 30, 2020, at 11:40 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear colleagues, Here we announce that Dr. Ryan Truchelut, an alumnus (PhD '15) of FSU meteorological program, will be the speaker of this week's MET seminar. The title, abstract, and Zoom link are as the following: Title: From the "Weather Guy" to WeatherTiger: Explorations in Scientific Entrepreneurship Abstract: Career decisions in meteorology often are perceived along lines of binary choice. Academia or forecasting? Research or teaching? Public or private sector? And yet, more options than these exist for those who take a "Choose Your Own Adventure" approach to the weather profession. FSU meteorology alumni Dr. Ryan Truchelut (PhD '15) will discuss the path in scientific entrepreneurship that he has followed in co-founding WeatherTiger, a weather and climate consulting company, in a talk that like the start-up life itself, is a mix of research, operations, finance, cat herding, memoirs, and attempted dad humor. The Zoom link: https://fsu.zoom.us/j/95792371181?pwd=QzFLQWZjOXozSXFtZlNnQThmbkNVQT09. A flyer of his talk is also attached. Best, Zhaohua _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Dec 3 17:16:13 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 3 Dec 2020 22:16:13 +0000 Subject: [Eoas-seminar] MET seminar series by Dr. Truchelut on Thursday, Dec. 3, 2020, at 3:30 PM In-Reply-To: References: Message-ID: Thanks all who joined our meteorology seminar today by Dr. Ryan Truchelut. If you were not able to attend and would like the link to the recording, please contact Allison Wing (awing at fsu.edu) - do *not* reply to this email. Best wishes to all for a smooth end to the semester and safe and happy holiday time. The meteorology seminar series will return in January 2021. Cheers, Allison On Dec 3, 2020, at 3:29 PM, eoas-seminar--- via Eoas-seminar > wrote: Starting in 1 minute! On Dec 3, 2020, at 10:01 AM, eoas-seminar--- via Eoas-seminar > wrote: A reminder of today?s seminar at 3:30 PM with Dr. Ryan Truchelut, an alum of the FSU Meteorology program and co-founder of WeatherTiger, a private weather and climate consulting company here in Tallahassee. This is our last meteorology seminar of the semester. Graduate students, please stay after the seminar for a Q & A session with the speaker on work/life/career topics. Hope to see you all there! https://fsu.zoom.us/j/95792371181?pwd=QzFLQWZjOXozSXFtZlNnQThmbkNVQT09 On Nov 30, 2020, at 11:40 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear colleagues, Here we announce that Dr. Ryan Truchelut, an alumnus (PhD '15) of FSU meteorological program, will be the speaker of this week's MET seminar. The title, abstract, and Zoom link are as the following: Title: From the "Weather Guy" to WeatherTiger: Explorations in Scientific Entrepreneurship Abstract: Career decisions in meteorology often are perceived along lines of binary choice. Academia or forecasting? Research or teaching? Public or private sector? And yet, more options than these exist for those who take a "Choose Your Own Adventure" approach to the weather profession. FSU meteorology alumni Dr. Ryan Truchelut (PhD '15) will discuss the path in scientific entrepreneurship that he has followed in co-founding WeatherTiger, a weather and climate consulting company, in a talk that like the start-up life itself, is a mix of research, operations, finance, cat herding, memoirs, and attempted dad humor. The Zoom link: https://fsu.zoom.us/j/95792371181?pwd=QzFLQWZjOXozSXFtZlNnQThmbkNVQT09. A flyer of his talk is also attached. Best, Zhaohua _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Wed Dec 9 15:18:47 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 9 Dec 2020 20:18:47 +0000 Subject: [Eoas-seminar] Meteorology PhD Defense for Allison Brannan, Thursday, December 10, 2020, 2:00 PM on zoom https://fsu.zoom.us/j/96174470780 Message-ID: Meteorology Seminar Allie Brannan PhD Meteorology Candidate Title: An Analysis of the Extratropical Flow Response to Recurving Atlantic Tropical Cyclones Co-Major Professors: Dr. Jeffrey Chagnon & Dr. Robert Hart Date: December 10th, 2020 Time: 2:00 PM Location: Zoom Meeting: https://fsu.zoom.us/j/96174470780 ABSTRACT Previous case studies have noted a significant extratropical flow response to recurving Atlantic tropical cyclones (TCs), which is often linked to extreme weather events downstream. This study examines the modification of Rossby waves on the extratropical jet in response to recurving Atlantic TCs from both climatological and predictability perspectives. Changes in amplitude and location of Rossby waves are identified using a wavelet decomposition technique on isentropic potential vorticity. The climatology demonstrates that recurving Atlantic TC events are capable of modifying the amplitude of the extratropical flow. The nature of the extratropical flow response is most strongly tied to the average translation speed of the TC relative to the Rossby wave over the 72 hours following recurvature. The ability of Atlantic recurving TCs to significantly modify the amplitude of downstream Rossby waves motivates the investigation into whether the predictability of the extratropical flow is also affected by the TC and its Rossby wave relative speed. Predictability is evaluated as the standard deviation of isentropic potential vorticity among a 50-member ensemble and is compared to climatology. This study found subsets of recurvature cases that contain areas of significantly modified ensemble spread which were anchored in time and space to the recurvature of the TC. It is shown that forecast uncertainty is dependent upon the location of the nearest trough at the time of recurvature and the relative speed between the TC and the Rossby wave train after recurvature. Predictability is significantly degraded when recurvature occurs downstream of a trough; the elevated uncertainty subsequently propagates downstream along with the trough axis. An analysis in spectral space demonstrates that the increase in uncertainty is not solely attributed to the trough location, as there is also significantly elevated uncertainty in the Rossby wave amplitude across downstream troughs and ridges. Uncertainty is enhanced in locations where baroclinic growth processes are most pronounced, specifically where the TC and upper-level trough are optimally phased. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Dec 10 10:35:10 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 10 Dec 2020 15:35:10 +0000 Subject: [Eoas-seminar] Meteorology PhD Defense for Allison Brannan, Thursday, December 10, 2020, 2:00 PM on zoom https://fsu.zoom.us/j/96174470780 Message-ID: Meteorology Seminar Allie Brannan PhD Meteorology Candidate Title: An Analysis of the Extratropical Flow Response to Recurving Atlantic Tropical Cyclones Co-Major Professors: Dr. Jeffrey Chagnon & Dr. Robert Hart Date: December 10th, 2020 Time: 2:00 PM Location: Zoom Meeting: https://fsu.zoom.us/j/96174470780 ABSTRACT Previous case studies have noted a significant extratropical flow response to recurving Atlantic tropical cyclones (TCs), which is often linked to extreme weather events downstream. This study examines the modification of Rossby waves on the extratropical jet in response to recurving Atlantic TCs from both climatological and predictability perspectives. Changes in amplitude and location of Rossby waves are identified using a wavelet decomposition technique on isentropic potential vorticity. The climatology demonstrates that recurving Atlantic TC events are capable of modifying the amplitude of the extratropical flow. The nature of the extratropical flow response is most strongly tied to the average translation speed of the TC relative to the Rossby wave over the 72 hours following recurvature. The ability of Atlantic recurving TCs to significantly modify the amplitude of downstream Rossby waves motivates the investigation into whether the predictability of the extratropical flow is also affected by the TC and its Rossby wave relative speed. Predictability is evaluated as the standard deviation of isentropic potential vorticity among a 50-member ensemble and is compared to climatology. This study found subsets of recurvature cases that contain areas of significantly modified ensemble spread which were anchored in time and space to the recurvature of the TC. It is shown that forecast uncertainty is dependent upon the location of the nearest trough at the time of recurvature and the relative speed between the TC and the Rossby wave train after recurvature. Predictability is significantly degraded when recurvature occurs downstream of a trough; the elevated uncertainty subsequently propagates downstream along with the trough axis. An analysis in spectral space demonstrates that the increase in uncertainty is not solely attributed to the trough location, as there is also significantly elevated uncertainty in the Rossby wave amplitude across downstream troughs and ridges. Uncertainty is enhanced in locations where baroclinic growth processes are most pronounced, specifically where the TC and upper-level trough are optimally phased. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Sat Dec 19 08:53:57 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Sat, 19 Dec 2020 13:53:57 +0000 Subject: [Eoas-seminar] EOAS Diversity, Equity, and Inclusion Meeting Message-ID: Dear All, The next meeting of the EOAS Diversity, Equity, and Inclusion Meeting will be on Weds, Jan. 13th at 9:00 am: https://fsu.zoom.us/j/98563817138 All are welcome to attend. Also, please see the following opportunity for Unlearning Racism in Geoscience run out of WHOI: https://urgeoscience.org/ They offer a curriculum and reading materials with curriculum beginning in January. Sincerely, Angie Knapp -- ************************************************ Angela Knapp Associate Professor Earth, Ocean, and Atmospheric Science Building, Room 5007 Earth, Ocean and Atmospheric Science Dept. Florida State University Shipping Address: Florida State University EOAS Dept., Room 2013, 1011 Academic Way Tallahassee, FL 32306-4520 Office: (850) 644-0259 anknapp at fsu.edu http://myweb.fsu.edu/anknapp/ -------------- next part -------------- An HTML attachment was scrubbed... URL: