On the Impact of Tropical Cyclones on Rossby Wave Packets: A Climatological Perspective
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TLDR
In this paper, the authors investigated the impact of recurving tropical cyclones (TCs) on the amplitude and frequency of synoptic-scale Rossby wave packets (RWPs) over a 30-year period.Abstract:
Many studies have highlighted the importance of recurving tropical cyclones (TCs) in triggering Rossby waves. This study investigates the impact of western North Pacific (WNP), south Indian Ocean, and North Atlantic recurving TCs on the amplitude and frequency of synoptic-scale Rossby wave packets (RWPs) over a 30-yr period. The results indicate a significant increase of RWP frequency downstream of WNP and south Indian Ocean TCs. A statistically significant RWP amplitude anomaly downstream of these TCs suggests that RWPs, which are associated with TCs, are stronger than those that generally occur in midlatitudes. North Atlantic TCs do not seem to be associated with a statistically significant increase in RWP frequency and amplitude downstream.Processes that contribute to Rossby wave amplification are identified by creating composites for WNP TCs with and without downstream development. Potential vorticity, eddy kinetic energy, and quasigeostrophic forcing diagnostics highlight dynamical mechanisms...read more
Citations
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Rossby Wave Packets on the Midlatitude Waveguide—A Review
TL;DR: In this paper, a review of the literature on upper-tropospheric transient wave packets along the midlatitude jet stream is presented, with an emphasis on developments during the last 15 years.
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The extratropical transition of tropical cyclones. Part I: Cyclone evolution and direct impacts
Clark Evans,Kimberly M. Wood,Sim D. Aberson,Heather M. Archambault,Shawn M. Milrad,Lance F. Bosart,Kristen L. Corbosiero,Christopher A. Davis,João Rafael Dias Pinto,James D. Doyle,Chris Fogarty,Thomas J. Galarneau,Christian M. Grams,Kyle S. Griffin,John R. Gyakum,Robert E. Hart,Naoko Kitabatake,Hilke S. Lentink,Ron McTaggart-Cowan,William Perrie,Julian F. Quinting,Carolyn A. Reynolds,Michael Riemer,Elizabeth A. Ritchie,Yujuan Sun,Fuqing Zhang +25 more
TL;DR: Extratropical transition (ET) is the process by which a tropical cyclone, upon encountering a baroclinic environment and reduced sea surface temperature at higher latitudes, transforms into an extraspatial cyclone.
Simulations of the Extratropical Transition of Tropical Cyclones
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The Key Role of Diabatic Outflow in Amplifying the Midlatitude Flow: A Representative Case Study of Weather Systems Surrounding Western North Pacific Extratropical Transition
TL;DR: In this article, the role of diabatic outflow in midlatitude flow amplification was highlighted in the context of a review of the physical and dynamical processes involved in extratropical transition.
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The role of latent heating in atmospheric blocking dynamics: a global climatology
TL;DR: In this article, the role of diabatic processes, in particular the release of latent heating in strongly ascending airstreams, play in the dynamics and spatio-temporal variability of blocking in a detailed 38-year global climatological analysis.
References
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Journal ArticleDOI
The Climatology and Characteristics of Rossby Wave Packets Using a Feature-Based Tracking Technique
TL;DR: In this article, track data and feature-based descriptive statistics, including area, average intensity, intensity volume (intensity multiplied by area), intensity-weighted centroid position, and velocity, were gathered to describe the interannual, annual, seasonal, and regime-based climatology of RWPs.
Journal ArticleDOI
Hurricane Katrina (2005). Part II: Evolution and Hemispheric Impacts of a Diabatically Generated Warm Pool
TL;DR: In this paper, an analysis of Hurricane Katrina's outflow layer after landfall suggests that it does not itself make up the long-lived midlatitude warm pool, and the slow progression of a strong upper-tropospheric warm pool across the North Atlantic Ocean in the week following Katrina's landfall prompts the question of whether even a nonreintensifying ET event can lead to significant modification of the mid-latitude flow.
Journal ArticleDOI
Identifying Rossby wave trains and quantifying their properties
Ilona Glatt,Volkmar Wirth +1 more
TL;DR: In this article, a method is introduced to automatically identify upper-level Rossby wave trains and to objectively diagnose their properties based on the envelope of the upper tropospheric meridional wind represented in a Hovmoller diagram.
Journal ArticleDOI
Comparison of Wave Packets Associated with Extratropical Transition and Winter Cyclones
Ryan D. Torn,Gregory J. Hakim +1 more
TL;DR: In this article, the differences in the development of wave packets associated with midlatitude cyclones and the extratropical transition (ET) of tropical cyclones in the western North Pacific (WNP) and Atlantic basins are diagnosed observationally by compositing Climate Forecast System Reanalysis (CFSR) data over a 32-yr period.
Journal ArticleDOI
European high-impact weather caused by the downstream response to the extratropical transition of North Atlantic Hurricane Katia (2011)
TL;DR: In this article, the authors quantify the role of Hurricane Katia in the European high-impact weather (HIW) and show that Katia was crucial for the evolution of a narrow downstream trough.
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