Global Scatterometer Observations of the Structure of Tropical Cyclone Wind Fields

Tamizi, Ali; Young, Ian R.; Ribal, Agustinus; Alves, Jose-Henrique

doi:10.1175/mwr-d-20-0196.1

Cited by 19 publications

(10 citation statements)

References 41 publications

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“…As the tropical cyclones always accompanied by rain, the σ Ku measurement is noisier and less stable than of the σ C , similar to what has been observed by G. Quartly et al (1996). Extreme H S conditions of more than 10-m height, known to occur at the right of the tropical cyclone direction (24.5°-27°N), have amplified the impact of returned backscatter from swell-dominated seas (Tamizi et al, 2020;Willoughby & Rahn, 2004). At similar locations, T b at all channels exceeds 200 K indicating rain, with high W L and W V suggesting that massive water density loading was stratified in the atmosphere.…”

Section: Observed Jasons Parameters During Tropical Cyclone: Case Studiessupporting

confidence: 78%

“…The HWind data contain total uncertainty near the storm center about 6% with the increase up to 13% at the tropical storm force wind radius (DiNapoli et al, 2012). The HWind has been used to validate tropical cyclone U 10 derived from altimeter (Qin et al, 2014;Quilfen et al, 2006) and scatterometer (Alsweiss et al, 2014;Liu & Tang, 2016;Ricciardulli & Wentz, 2015;Tamizi et al, 2020). This product, however, is limited to hurricanes which exist in the NHC observatory region.…”

Section: Hwind Airborne Datamentioning

confidence: 99%

“…A similar CMOD5.n product to that used by Chou et al (2013) was used in this study. Besides, similar approach (Equation 1) has been implemented by Tamizi et al (2020) when studying tropical cyclone wind field structure from scatterometers.…”

Section: Metops U 10 Data Calibrationmentioning

confidence: 99%

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Tropical Cyclone Wind Speed Estimation From Satellite Altimeter‐Derived Ocean Parameters

2021

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A tropical cyclone is a catastrophic natural disaster and this complex synoptic storm environment always brings together destructive high wind speed (greater than 15 ms −1 ) combined with heavy rain. In order to assess the intensity and radial extent of catastrophic effects, wind speed information inside tropical cyclone structure is crucial (Elsner et al., 2008;Emanuel, 2000;Emanuel et al., 2004). Buoy measurement error due to notable tilt and sheltered by large waves has caused difficulties in measuring wind speed at 10 m from the sea surface (hereafter known U 10 ) in tropical cyclone (Bender et al., 2010). By the advancement of satellite remote sensing, various sensors help the responsible agencies to monitor the tropical cyclone in almost real-time. The aerial view of cloud-top pattern from optical geostationary satellite always contributes significantly to forecasting the trajectory (Sawada et al., 2020) yet the U 10 information in tropical cyclone is still hard to achieve.

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Section: Observed Jasons Parameters During Tropical Cyclone: Case Studiessupporting

confidence: 78%

Section: Hwind Airborne Datamentioning

confidence: 99%

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Tropical Cyclone Wind Speed Estimation From Satellite Altimeter‐Derived Ocean Parameters

2021

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“…In tropical and sub-tropical regions, tropical cyclones (or hurricanes or typhoons) represent the most extreme meteorological forcing events, generating wind speeds in excess of 50 m/s 1 – 4 and ocean significant wave heights in excess of 12 m 5 , 6 . As such, tropical cyclones have important societal impacts, resulting in damage to coastal infrastructure 7 , coastal flooding 8 and beach erosion 9 .…”

Section: Introductionmentioning

confidence: 99%

Global tropical cyclone extreme wave height climatology

Grossmann-Matheson,

Young,

Meucci

et al. 2024

Sci Rep

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A global study of extreme value (1 in 100-year return period) tropical cyclone generated waves is conducted across all tropical cyclone basins. The study uses a 1000 year tropical cyclone synthetic track database to force a validated parametric wave model. The resulting distributions of extreme significant wave height show that values in the North Atlantic and Western Pacific basins are the largest globally. This is partly due to the relative intensities and frequencies of occurrence of storms in these basins but also because the typical velocities of forward movement of storms are larger and hence can sustain the generation of larger waves. These larger values of velocity of forward movement tend to occur at higher latitudes. As a result, in both of these basins the largest extreme waves occur at higher latitudes than the maximum tropical cyclone winds. In all other tropical cyclone basins, storms tend to propagate more east–west and hence the maximum values of extreme significant wave height and wind speed occur at comparable latitudes.

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“…Wind inflow is shown to vary both radially and azimuthally within a TC. The smallest observed wind inflow angles are found in the left front quadrant, with the largest values are in the right rear quadrant relative to the TC motion direction (Tamizi et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Sea Surface Wind Structure in the Outer Region of Tropical Cyclones Observed by Wave Gliders

et al. 2023

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Understanding the sea surface wind structure during tropical cyclones (TCs) is the key for study of ocean response and parameterization of air‐sea surface in numerical simulation. However, field observations are scarce. In 2019, three wave gliders were deployed in the South China Sea and the adjacent Western Pacific region, which acquired sea surface wind structure of eight TCs. Analysis of the field data suggests that the wave glider‐observed surface winds are consistent with most analysis/reanalysis data (i.e., ERA5, Cross‐Calibrated Multi‐Platform, and National Centers for Environmental Prediction‐Global Data Assimilation System) and Soil Moisture Active Passive. Both wave glider observations and analysis/reanalysis data indicate that TC wind fields induce an obvious increase in speed toward the sea surface together with a sharp change in direction, showing an asymmetric wind structure which is sensitive to TC translation speed and intensity. Larger mean values of wind speed and inflow angle are located on the right side along TC tracks. The inflow angle shows a highly dynamic dependence on the radial distance from the TC center, the TC intensity, as well as the TC‐relative azimuth. Comparisons between field observations and theoretical models indicate that the most widely used, ideal TC wind profile models can largely represent the observed sea surface wind structure, but generally underestimate the wind speed due to lack of consideration of background wind. Moreover, simple ideal models (e.g., the modified Rankine vortex model) may outperform complex models when accurate information of TCs is limited. Wave glider observations have potential for better understanding of air‐sea exchanges and for improvements of the corresponding parameterization schemes.

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Global Scatterometer Observations of the Structure of Tropical Cyclone Wind Fields

Cited by 19 publications

References 41 publications

Tropical Cyclone Wind Speed Estimation From Satellite Altimeter‐Derived Ocean Parameters

Tropical Cyclone Wind Speed Estimation From Satellite Altimeter‐Derived Ocean Parameters

Global tropical cyclone extreme wave height climatology

Sea Surface Wind Structure in the Outer Region of Tropical Cyclones Observed by Wave Gliders

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