Comparison of two recent storm surge events based on results of field surveys

Nakamura, Ryota; Shibayama, Tomoya; Mikami, Takahito; Miguel, Esteban; Takagi, Hiroshi; Maell, Martin; Iwamoto, Takumu

doi:10.1063/1.5005734

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…(2019), Mattar and Borvarán (2016), Nakamura et al. (2017) and Pradhan et al. (2018), a total of 36 physical parametrization configurations were utilized.…”

Section: Methodsmentioning

confidence: 99%

The Role of Physical Parameterization Schemes in Capturing the Characteristics of Extratropical Cyclones Over the South Pacific Ocean

Gómez

Mäll

Aránguiz

2021

Earth and Space Science

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The extratropical cyclone (ETC) of August 2015 in central Chile was investigated using the WRF model to analyze the sensitivity of meteorological variables to different physical parameterization schemes. This study assesses the performance of different physical schemes in the simulation of track, core pressure, mean sea level pressure, wind direction and wind speed associated with ETC over the South Pacific. The analysis uses a total of 36 sensitivity experiments, consisting of: two microphysics schemes; three surface layer and planetary boundary layer; two cumulus schemes; two longwave and shortwave radiation; and Noah for land surface. Sensitivity experiments indicate that the cumulus, planetary boundary layer and surface layer scheme have a fundamental role in the characterization of ETC track and intensity, while the microphysics scheme plays a secondary role in determining these variables. On the other hand, long‐ and shortwave radiation do not have a significant impact. The sensitivity experiments indicate that exp24 provides the best results overall. The results of this work allow the selection time of the different physical schemes to be optimized according to the ETC characteristics that are to be simulated

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“…(2019), Mattar and Borvarán (2016), Nakamura et al. (2017) and Pradhan et al. (2018), a total of 36 physical parametrization configurations were utilized.…”

Section: Methodsmentioning

confidence: 99%

The Role of Physical Parameterization Schemes in Capturing the Characteristics of Extratropical Cyclones Over the South Pacific Ocean

Gómez

Mäll

Aránguiz

2021

Earth and Space Science

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“…For example, the storm-surge-induced current could intensify flood hazard. The surge-generated current combined with wave runup could cause severe onshore washout or scour damage (Borga et al, 2017;Fritz et al, 2007;Nakamura et al, 2017), beach erosion, or even breach (Seabergh, 2010) during storm events; the heavy debris carried by surge flow could also cause further damage to buildings and infrastructures. Large inundation velocity could cause hazards to pedestrians and building damage (Becker et al, 2015;Olbert et al, 2017;Pistrika & Jonkman, 2010;Takagi et al, 2016).…”

Section: 1029/2019jc015249mentioning

confidence: 99%

A Comparative Study of Typhoon Hato (2017) and Typhoon Mangkhut (2018)—Their Impacts on Coastal Inundation in Macau

Yang

Zhao

et al. 2019

JGR Oceans

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Typhoons Hato (2017) and Typhoon Mangkhut (2018) struck the Pearl River Delta, China, in two consecutive years, causing intense flooding and severe damage along the coast, especially in Macau. These two typhoons are extreme events because of their record-breaking storm tides, and they are typical typhoons in terms of their track forward directions, which affect the coast of Guangdong Province, China. This paper analyzes and compares the physical processes of these two major typhoons. We first report the results of our posttyphoon surveys in Macau and the constructed inundation maps for both typhoon events. The inundation maps in conjunction with measured wind, atmospheric pressure, and wave data are used to validate a package of numerical models that simulate fully coupled tide-surge-wave fields during a typhoon. We quantify storm surges and wave heights in the Pearl River Delta. The surge around Macau was mainly affected by wind, while atmosphere pressure and ocean waves played a secondary role. In additional to inundation depth, we also investigate inundation durations and flow velocities. Typhoon Mangkhut made its landfall at much lower tidal level than that of Typhoon Hato. However, Typhoon Mangkhut generated much larger storm surge with larger affected areas and significantly longer inundation durations. We attribute the causes mainly to Typhoon Mangkhut's storm size, which was almost three times larger than that of Typhoon Hato. (2017) and Typhoon Mangkhut (2018) are two record-breaking typhoons, which struck the Pearl River Delta, China, in two consecutive years. We conduct timely posttyphoon surveys and construct high-resolution inundation maps in Macau where the severest impacts by both typhoons are evident. By conducting a fully coupled numerical simulation for tide-surge-wave, we reproduce the physical processes of these two typhoon events in the Pearl River Estuary. Typhoon Mangkhut and Typhoon Hato represent two distinct types of typhoons, which are equally dangerous. Typhoon Mangkhut is enormous in size, causing storm surge hazard in a much larger spatial coverage with much longer flood duration in the Pearl River Estuary. Typhoon Hato, which strengthened unexpectedly from Categories 1 to 3 on the Saffir-Simpson scale in 5 hr just before its landfall, increased the risk of inadequate evacuation efforts, large causalities, and property damage. Plain Language Summary Typhoons Hato

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Comparison of two recent storm surge events based on results of field surveys

Cited by 2 publications

References 9 publications

The Role of Physical Parameterization Schemes in Capturing the Characteristics of Extratropical Cyclones Over the South Pacific Ocean

The Role of Physical Parameterization Schemes in Capturing the Characteristics of Extratropical Cyclones Over the South Pacific Ocean

A Comparative Study of Typhoon Hato (2017) and Typhoon Mangkhut (2018)—Their Impacts on Coastal Inundation in Macau

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