Weather and Climate Dynamics
Weather and Climate Dynamics
WCD
Articles | Volume 2, issue 4
Articles | Volume 2, issue 4
https://doi.org/10.5194/wcd-2-1051-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wcd-2-1051-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 2, issue 4
Research article
 | 
05 Nov 2021
Research article |  | 05 Nov 2021

Acceleration of tropical cyclones as a proxy for extratropical interactions: synoptic-scale patterns and long-term trends

Anantha Aiyyer and Terrell Wade

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Short summary
We diagnose the mean circulations in the extratropics that are associated with rapid changes in the tropical storm storm speeds in the Atlantic. We show that rapid acceleration and deceleration are associated with distinct phasing between the tropical cyclone and weather waves of the extratropics. Over the past 5 decades, rapid acceleration and deceleration of tropical cyclones have reduced in magnitude. This might be related to the poleward shift and weakening of these extratropical waves.
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