[Eoas-seminar] TODAY - Friday, March 10 at 10:00am - Meteorology Bachelor of Science Defense - Chelsey Laurencin - 353 LOV

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Fri Mar 10 09:22:02 EST 2017

Meteorology Seminar

Chelsey Laurencin
B.S. Meteorology Degree

Title:  “Characterizing the variations of the North Atlantic Tropical Cyclone.”

Major Professor:  Dr. Vasubandhu Misra

Date: Friday, March 10, 2017               Time: 10:00 AM

Location: Werner A. Baum Seminar Room (353 Love Building)


In this study, we examine the seasonal and interannual variability of the Atlantic tropical cyclone (TC) motion from the historical Hurricane Database (HURDAT) over the period 1988-2014. We characterize these motions based on their position, lifecycle, and seasonal cycle. The main findings of this study are reviewed and include that: 1) TCs in the deep tropics are invariably slow-moving in comparison to TCs in higher latitudes. This is largely a consequence of the background steering flow being weaker (stronger) in the tropical (higher) latitudes, which overcomes the inertia of invariably larger sized TCs in the higher latitudes; 2) Climatologically, the fastest moving (> 60 mph) TCs are most frequent in September and October and are usually in the range of 35°N-55°N; 3) There is an overall decrease in the frequency of all categories of translation speed of TCs in warm relative to cold El Niño Southern Oscillation (ENSO) years. However, in terms of the percentage change in the frequency of TCs, those with a translation speed in the range of 10-20 mph display the most change in anomalous warm ENSO years relative to cold ENSO years; and 4) There is an overall decrease in frequency across all categories of TC translation speed in small relative to large Atlantic Warm Pool years, but in terms of percentage change in the frequency of TCs, there is significant and comparable change in the frequency over a larger range of translation speeds than the ENSO composites. This last finding suggests that Atlantic Warm Pool variations have a more profound impact on the translation speed of Atlantic TCs than ENSO does.

Paige Phillips

Academic Program Specialist - Meteorology  I  Earth, Ocean, & Atmospheric Science (EOAS)  I  Florida State University  I  410 Love Building  I  1017 Academic Way, Tallahassee, Florida 32306  I  (850) 644-8582  I  www.eoas.fsu.edu
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