Analysis of the 20-Year Variability of Ocean Wave Hazards in the Northwest Pacific

Li, Rui; Wu, Kejian; Zhang, Wenqing; Dong, Xianghui; Lv, Lu; Li, Shuo; Liu, Jin; Babanin, Alexander V.

doi:10.3390/rs15112768

Cited by 6 publications

(4 citation statements)

References 51 publications

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“…The mean relative error ( MRE ) is −10.7% and the RMSE is 1.0 m for the total 582 TCs. This result aligns with other conclusions that ERA5 has skill in capturing extreme wave heights observed by buoys and satellite altimeter 65 , 66 .…”

Section: Methodssupporting

confidence: 92%

“…Compared with the parametric model, ERA5 tends to underestimate the low-to-medium values of Hs (Hs < 6 m), and tends to overestimate the medium-to-high values of Hs (Hs > 6 m). But the overall error is small with MRE of 3% and RMSE of 0.9 m. This result is consistent with other findings that ERA5 tends to underestimate the extreme wave height 65 , 66 .…”

Section: Methodssupporting

confidence: 91%

See 1 more Smart Citation

Global increase in tropical cyclone ocean surface waves

Shi,

Feng,

Toumi

et al. 2024

Nat Commun

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The long-term changes of ocean surface waves associated with tropical cyclones (TCs) are poorly observed and understood. Here, we present the global trend analysis of TC waves for 1979–2022 based on the ERA5 wave reanalysis. The maximum height and the area of the TC wave footprint in the six h reanalysis have increased globally by about 3%/decade and 6%/decade, respectively. The TC wave energy transferred at the interface from the atmosphere to the ocean has increased globally by about 9%/decade, which is three times larger than that reported for all waves. The global energy changes are mostly driven by the growing area of the wave footprint. Our study shows that the TC-associated wave hazard has increased significantly and these changes are larger than those of the TC maximum wind speed. This suggests that the wave hazard should be a concern in the future.

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Section: Methodssupporting

confidence: 92%

Section: Methodssupporting

confidence: 91%

Global increase in tropical cyclone ocean surface waves

Shi,

Feng,

Toumi

et al. 2024

Nat Commun

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show abstract

“…Satellite-observed significant wave height (H s ) is a powerful and widely used material for studying the ocean environment [26][27][28][29]. In this work, we employed the Level-2 alongtrack Hs products provided by the NOAA Laboratory for Satellite Altimetry (LSA) to investigate the typhoon waves as well as examine the model performance in simulating ocean waves.…”

Section: Remote-sensed Significant Wave Heightmentioning

confidence: 99%

Investigating the Storm Surge and Flooding in Shenzhen City, China

Bai,

Wu,

Chen

et al. 2023

Remote Sensing

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Tropical cyclones affecting Shenzhen city have shown a remarkable tendency to increase in both intensity and quantity, highlighting the urgency of accurate forecasts of storm surges and flooding for effective planning and mitigation. Utilizing satellite and field observations together with the advanced high-resolution baroclinic wave–current model (SCHISM), a comprehensive investigation aimed at storm surge and flooding in Shenzhen was conducted. Statistical work of historical tropical cyclones revealed that Shenzhen was most vulnerable to cyclones propagating from the southeast toward the northwest and passing Shenzhen down the Pearl River Estuary. Thus, a representative, i.e., super typhoon Hato (2017), was selected for further study. Validations of numerical results suggested satisfactory model performance in mapping the wave, tide, and surge processes. Remarkable differences in spatiotemporal distribution and intensity of storm surge and flooding were found along the Shenzhen coast, which was dominated by the propagation of far-field surge and tidal waves, cooperation between wind direction and coastline orientation, estuary morphology, and the land terrain. Intervention of wave–current interaction improved the simulation of the surge and flooding and triggered an earlier occurrence time of the maximum surge in specific areas. The Pearl River discharge significantly elevated the sea level height inside the estuary and contributed to a more severe surge. Given the extremely complicated river networks and huge freshwater flux of Pearl River and the increasing trend of concurrent heavy precipitation of tropical cyclones, future investigations on compound flooding were suggested.

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“…Moreover, swells have detrimental effects on coastal areas. This is particularly critical as 2 of 15 coastal regions have high population densities worldwide [16,17]. Potential hazards caused by the swell energy include wave overtopping of sea defenses, significant wave runup, coastal flooding, and inundation.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Interannual Variability of Pacific Swell Pools

Zhang,

Wu,

et al. 2023

JMSE

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The investigation of the propagation of swells throughout the ocean has long been a subject of significant interest in physical oceanography. This paper investigates the interannual variability of the Pacific swell pools and examines the factors contributing to their formation using the European Centre for Medium-Range Weather Forecasts (ECMWF) ERA5 re-analysis dataset. Our results show that the interaction between swell propagation and wind fields influences the formation and development of Pacific swell pools. The eastern and southern Pacific swell pools are mainly caused by the northward propagation of swells from the South Pacific; the western and northern swell pools are primarily influenced by the southward propagation of swells from the North Pacific; and the central part of the swell pools is the result of the combined impact of both swell propagation from the north and south Pacific. The size of the swell pools in the Pacific Ocean is at its maximum in the northern hemisphere during the winter (December, January, and February) and at its minimum during the summer (June, July, and August). Due to the impact of the low-pressure systems, the swell pools in the winter hemisphere are relatively small, while the swell pools in the summer hemisphere are significantly larger. There is a relationship between the swell pools and ENSO events. When an El Niño event (La Niña event) occurs, the swells propagating to the low latitudes of the Pacific Ocean from high latitudes will strengthen (weaken), resulting in an increase (decrease) in the size of the swell pools. Analyzing the spatial and temporal distribution of the swell pools is important for understanding the large-scale effect of waves.

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Analysis of the 20-Year Variability of Ocean Wave Hazards in the Northwest Pacific

Cited by 6 publications

References 51 publications

Global increase in tropical cyclone ocean surface waves

Global increase in tropical cyclone ocean surface waves

Investigating the Storm Surge and Flooding in Shenzhen City, China

Analysis of the Interannual Variability of Pacific Swell Pools

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