Spatial structure of directional wave spectra in hurricanes

Esquivel–Trava, Bernardo; Ocampo‐Torres, Francisco J.; Osuna, P.

doi:10.1007/s10236-014-0791-9

Cited by 30 publications

(46 citation statements)

References 16 publications

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“…This wave packet propagates to the south with a bean‐like structure. This is well‐known behavior for waves associated with tropical cyclones, based on theoretical considerations (Cline, ), numerical modeling (Chen & Curcic, ; Moon et al, ) and in situ observations from ships (Tannehill, ), airplane (Wright et al, ), and buoy measurements (Esquivel‐Trava et al, ). This shape results from the higher wind speed in the quadrant associated with the forward motion of the storm.…”

Section: Description Of the Fully Coupled Owa Simulationmentioning

confidence: 64%

A New Coupled Ocean‐Waves‐Atmosphere Model Designed for Tropical Storm Studies: Example of Tropical Cyclone Bejisa (2013–2014) in the South‐West Indian Ocean

Pianezze

Barthe

Bielli

et al. 2018

J Adv Model Earth Syst

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Ocean‐Waves‐Atmosphere (OWA) exchanges are not well represented in current Numerical Weather Prediction (NWP) systems, which can lead to large uncertainties in tropical cyclone track and intensity forecasts. In order to explore and better understand the impact of OWA interactions on tropical cyclone modeling, a fully coupled OWA system based on the atmospheric model Meso‐NH, the oceanic model CROCO, and the wave model WW3 and called MSWC was designed and applied to the case of tropical cyclone Bejisa (2013–2014). The fully coupled OWA simulation shows good agreement with the literature and available observations. In particular, simulated significant wave height is within 30 cm of measurements made with buoys and altimeters. Short‐term (< 2 days) sensitivity experiments used to highlight the effect of oceanic waves coupling show limited impact on the track, the intensity evolution, and the turbulent surface fluxes of the tropical cyclone. However, it is also shown that using a fully coupled OWA system is essential to obtain consistent sea salt emissions. Spatial and temporal coherence of the sea state with the 10 m wind speed are necessary to produce sea salt aerosol emissions in the right place (in the eyewall of the tropical cyclone) and with the right size distribution, which is critical for cloud microphysics.

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Section: Description Of the Fully Coupled Owa Simulationmentioning

confidence: 64%

A New Coupled Ocean‐Waves‐Atmosphere Model Designed for Tropical Storm Studies: Example of Tropical Cyclone Bejisa (2013–2014) in the South‐West Indian Ocean

Pianezze

Barthe

Bielli

et al. 2018

J Adv Model Earth Syst

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“…These findings lead to a hypothesis that nonlinear wave-wave interactions were dominant (over wind input and dissipation by breakers) and controlled the shape of the wave spectra. Hu and Chen (2011) and Esquivel-Trava et al (2015) used composites of the National Oceanic and Atmospheric Administration's National Data Buoy Center's network of operational directional buoy measurements. These studies verified the asymmetry of TC wave fields and found that the directional spectra possessed unique characteristics in each quadrant.…”

Section: Motivationmentioning

confidence: 99%

“…Hu and Chen () and Esquivel‐Trava et al () used composites of the National Oceanic and Atmospheric Administration's National Data Buoy Center's network of operational directional buoy measurements. These studies verified the asymmetry of TC wave fields and found that the directional spectra possessed unique characteristics in each quadrant.…”

Section: Introductionmentioning

confidence: 99%

Directional Wave Spectra Observed During Intense Tropical Cyclones

et al. 2018

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Two deep‐sea moorings were deployed 780 km off the coast of southern Taiwan for 4–5 months during the 2010 typhoon season. Directional wave spectra, wind speed and direction, and momentum fluxes were recorded on two Extreme Air‐Sea Interaction buoys during the close passage of Severe Tropical Storm Dianmu and three tropical cyclones (TCs): Typhoon Fanapi, Super Typhoon Megi, and Typhoon Chaba. Conditions sampled include significant wave heights up to 11 m and wind speeds up to 26 m s−1. Details varied for large‐scale spectral structure in frequency and direction but were mostly bimodal. The modes were generally composed of a swell system emanating from the most intense storm region and local wind‐seas. The peak systems were consistently young, meaning actively forced by winds, when the storms were close. During the peaks of the most intense passages—Chaba at the northern mooring and Megi at the southern—the bimodal seas coalesced. During Chaba, the swell and wind‐sea coupling directed the high frequency waves and the wind stress away from the wind direction. A spectral wave model was able reproduce many of the macrofeatures of the directional spectra.

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“…79Previous studies have typically assumed TCs impact a region up to 10R max [e.g. Young, 80 2006;Esquivel-Trava et al, 2015], yet studies have also shown that TC waves can have 81 impacts very far from their track; for example, Beeden et al [2015], have reported damage 82 to coral reefs from TC-generated waves that were very remote from a TC path. Several 83 studies [e.g.…”

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confidence: 99%

“…U 10 / c p < 0.83), where c p is the phase velocity of the waves 117 based on the peak frequency. Esquivel-Trava et al [2015] performed a more extensive 118 study based on several observation locations in the Gulf of Mexico to show that wave 119 spectra are predominantly uni-modal in the right TC quadrants (left in the southern 120 hemisphere), but become bi-or tri-modal in areas in the left quadrants (right in southern 121 hemisphere). 122…”

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confidence: 99%