Slow translation speed causes rapid collapse of northeast Pacific Hurricane Kenneth over cold core eddy

Walker, Nan D.; Leben, R. R.; Pilley, Chet; Shannon, Michael R.; Herndon, Derrick; Pun, Iam Fei; Lin, I. I.; Gentemann, Chelle

doi:10.1002/2014gl061584

Cited by 65 publications

(60 citation statements)

References 33 publications

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“…The observational and numerical studies have shown that rapid intensification can occur when the storm passes over a warm ocean eddy. In contrast, when the TC encounters a cold ocean eddy, the SST cooling can be enhanced, and thus TC intensity would be further limited due to the stronger negative feedback associated with the decrease of the heat flux from the ocean [ Lin et al ., , ; Wu et al ., ; Sung et al ., ; Walker et al ., ]. Therefore, it is important to include the information of ocean eddies while conducting TC intensity forecasts.…”

Section: Introductionmentioning

confidence: 99%

Tropical cyclone‐ocean interaction in Typhoon Megi (2010)—A synergy study based on ITOP observations and atmosphere‐ocean coupled model simulations

Pun

et al. 2016

JGR Atmospheres

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A mesoscale model coupling the Weather Research and Forecasting model and the three‐dimensional Price‐Weller‐Pinkel ocean model is used to investigate the dynamical ocean response to Megi (2010). It is found that Megi induces sea surface temperature (SST) cooling very differently in the Philippine Sea (PS) and the South China Sea (SCS). The results are compared to the in situ measurements from the Impact of Typhoons on the Ocean in the Pacific (ITOP) 2010 field experiment, satellite observations, and ocean analysis field from Eastern Asian Seas Ocean Nowcast/Forecast System of the U.S. Naval Research Laboratory. The uncoupled and coupled experiments simulate relatively accurately the track and intensity of Megi over PS; however, the simulated intensity of Megi over SCS varies significantly among the experiments. Only the experiment coupled with three‐dimensional ocean processes, which generates rational SST cooling, reasonably simulates the storm intensity in SCS. Our results suggest that storm translation speed and upper ocean thermal structure are two main factors responsible for Megi's distinct different impact over PS and over SCS. In addition, it is shown that coupling with one‐dimensional ocean process (i.e., only vertical mixing process) is not enough to provide sufficient ocean response, especially under slow translation speed (~2–3 m s−1), during which vertical advection (or upwelling) is significant. Therefore, coupling with three‐dimensional ocean processes is necessary and crucial for tropical cyclone forecasting. Finally, the simulation results show that the stable boundary layer forms on top of the Megi‐induced cold SST area and increases the inflow angle of the surface wind.

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Section: Introductionmentioning

confidence: 99%

Tropical cyclone‐ocean interaction in Typhoon Megi (2010)—A synergy study based on ITOP observations and atmosphere‐ocean coupled model simulations

Pun

et al. 2016

JGR Atmospheres

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“…Sun et al (2014) illustrated the effects of super typhoons on the 40 strength, spatial area, and kinetic energy of COEs. Some observations 43 have found the long-lived biophysical response in COEs by remote sensing and Argo floats (Sun 44 et al 2010;Sun et al 2012;Walker et al 2014); however, the dynamic processes need to be 45 investigated further by numerical model. Some observations 43 have found the long-lived biophysical response in COEs by remote sensing and Argo floats (Sun 44 et al 2010;Sun et al 2012;Walker et al 2014); however, the dynamic processes need to be 45 investigated further by numerical model.…”

Section: Introduction 28mentioning

confidence: 99%

Response of a Preexisting Cyclonic Ocean Eddy to a Typhoon

Wang

Shang

2016

Journal of Physical Oceanography

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18ABSTRACT: The three-dimensional responses of a cyclonic ocean eddy (COE) for 1-2 19 months following a typhoon were investigated using altimeter data and numerical experiments. 20 Two significant features were found: 1) the cyclonic eddy was enhanced, and the 21 three-dimensional structure was changed; and 2) the cyclonic eddy underwent two processes: 22 elliptization and re-axisymmetrization in the horizontal plane. These two features are generally 23 associated with typhoon-induced upwelling and the dynamic processes of eddy adjustment. 24These results imply that a typhoon can affect the local ocean processes by low frequency 25 response. 26 27

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“…Thermal structures of the upper ocean in the vicinity of a TC path can influence the TC intensity. In particular, mesoscale warm core ocean eddies (WCE) provide relatively warmer ocean temperature compared to the surrounding water and can lessen the TC‐induced upper ocean cooling, while the cold core eddies (CCE) tend to produce large ocean cooling and reduce the upward surface enthalpy fluxes (e.g., Lin et al ., ; Walker et al ., ). On the other hand, ocean eddies may change the ocean mixed‐layer depth which is the most important factor in determining the magnitude of the feedback to TC (Wu et al ., ).…”

Section: Introductionmentioning

confidence: 97%

The influences of ocean on intensity of Typhoon Soudelor (2015) as revealed by coupled modeling

Huang

2018

Atmospheric Science Letters

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Typhoon Soudelor (2015) moved northwestward toward Taiwan and passed several mesoscale ocean eddies over the open ocean. A high-resolution air-sea coupled model HWRF is employed to simulate Soudelor. Coupled model with low-or high-resolution ocean conditions can largely reduce the over-intensification of the typhoon from uncoupled modeling. Coupled modeling with a more realistic finer-resolution Hybrid Coordinate Ocean Model (HYCOM) analysis helps better capture the rapid weakening of the super-intense typhoon for the first 2 days and the following re-intensification before 80 hr, due to the initial more realistic ocean conditions. The rapid weakening is related to the existence of initial cold core ocean eddies near the earlier typhoon, while the warm core eddies tend to decrease the typhoon-induced SST cooling and thus induce the re-intensification of the later typhoon. The typhoon boundary layer is shallower at the rear-right quadrant of the moving typhoon than that at other quadrants. The coupled modeling results show that a much shallower boundary layer lower than 200 m is produced at the rearright quadrant for the super-intense typhoon as the typhoon passes over cold core eddies and induces stronger SST cooling. In addition, stronger typhoon cold wake in coupled experiments induces larger inflow angles at lower levels at the rear-right quadrant than other studies. The simulated track near and after landfall at east Taiwan is also improved for the coupled experiment compared to the uncoupled experiment. K E Y W O R D Scold core eddy, typhoon-ocean interaction, Typhoon Soudelor (2015)

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Slow translation speed causes rapid collapse of northeast Pacific Hurricane Kenneth over cold core eddy

Cited by 65 publications

References 33 publications

Tropical cyclone‐ocean interaction in Typhoon Megi (2010)—A synergy study based on ITOP observations and atmosphere‐ocean coupled model simulations

Tropical cyclone‐ocean interaction in Typhoon Megi (2010)—A synergy study based on ITOP observations and atmosphere‐ocean coupled model simulations

Response of a Preexisting Cyclonic Ocean Eddy to a Typhoon

The influences of ocean on intensity of Typhoon Soudelor (2015) as revealed by coupled modeling

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