Vertical viscosity coefficient increased for high-resolution modeling of the Tsushima/Korea Strait

Hirose, Nobuyoshi; Liu, Tianran; Takayama, Katsumi; Uehara, K.; Taneda, Takeshi; Kim, Young Ho

doi:10.1175/jtech-d-20-0156.1

Cited by 3 publications

(2 citation statements)

References 23 publications

(33 reference statements)

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“…In this study, we used a coastal version of the Data assimilation Research of the East Asian Marine System (DREAMS_D) for the Tsushima Strait, which was constructed by Hirose et al (2021), as our physical part. The calculation domain is defined by the southwestern and northeastern corners with coordinates 32°N, 127°E and 36°16′N, 133°24′E, respectively (Figure 1).…”

Section: Methodsmentioning

confidence: 99%

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Prediction of potential fishing grounds of swordtip squid (Uroteuthis edulis) based on a physical–biochemical coupled model

Ito

Takayama²,

Hirose

2023

Fisheries Oceanography

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Swordtip squid (Uroteuthis edulis), which is sometimes eaten alive (lively squid) in northwest Kyushu, Japan, is an economically important fish species in the region. However, the total catch of this species in Japan has declined by more than 80% in the last three decades. To understand and predict the spatio‐temporal distribution of fish species, we developed a one‐dimensional ecosystem (NPZD) model and a habitat suitability index (HSI) model for southwest Iki Island, northwest Kyushu, Japan. Subsequently, we conducted three numerical experiments with the HSI model, with and without the NPZD model data (with the NPZD model data: phytoplankton or zooplankton concentrations, without the NPZD model data: only the physical data of the ocean). In the HSI model with zooplankton concentrations, we found a stronger positive relationship between the HSI model values and the daily fisheries catch data of U. edulis than that using only the physical variables of the ocean as the environmental parameters. Our study thus indicates that the performance of the fishing ground prediction model will improve by utilizing the lower trophic ecosystem model such as zooplankton concentrations. Furthermore, our results would provide important implications for the efficiency of fishing operations and the conservation and management of this species.

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Section: Methodsmentioning

confidence: 99%

“…The total number of vertical grids was 98. The parameters were described in detail by Hirose et al (2021). Solar radiation was calculated in accordance with the protocol described by Hirose et al (1996) and using the cloud amount from mesoscale numerical weather prediction model data of meteorological forecasts calculated by the Japan Meteorological Agency.…”

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confidence: 99%

Prediction of potential fishing grounds of swordtip squid (Uroteuthis edulis) based on a physical–biochemical coupled model

Ito

Takayama²,

Hirose

2023

Fisheries Oceanography

Self Cite

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Wintering and advection of <i>Karenia mikimotoi</i> in Nagasaki Prefecture

YAMAMOTO,

YAMATOGI,

NAKASHIMA

et al. 2024

NSUGAF

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Long-term mean circulation in the Japan Sea as reproduced by multiple eddy-resolving ocean circulation models

Wang

Ren

et al. 2022

Front. Mar. Sci.

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The capacity of four eddy-resolving ocean circulation models—HYCOM (HYbrid Coordinate Ocean Model), MRI.COM (Meteorological Research Institute Community Ocean Model), OFES (Ocean General Circulation Model for the Earth Simulator), and NEMO (Nucleus for European Modeling of the Ocean)—to simulate the long-term mean hydrographic conditions and circulation patterns in the Japan Sea is investigated in this study. The assessment of this study includes the evaluation of mean vertical profiles and time series of temperature and salinity at the representative monitoring stations. Different model products from 1993 to 2015 are compared with in situ measurements provided by historical cruises and monitoring stations. After that, we compared the observed and simulated surface current velocities over the basin and volume transports through the key straits in the Japan Sea. Simulated current velocities are validated against 15 years of Acoustic Doppler Current Profiler (ADCP) measurements near the longshore and offshore branches of the East Korea Warm Current (EKWC). Furthermore, the atmospheric forcing data of the four ocean circulation models are validated against the satellite wind product. We found that the vertical profiles and long-term variations of temperature and salinity reproduced by MRI.COM and HYCOM are closer to in situ measurements. All models simulate temperature well in upper ocean, but salinity simulations are of lower quality from OFES and NEMO at several stations. Simulated current velocities predominantly lie within the standard deviation of ADCP measurements at two locations. However, the sea surface currents are underestimated by four models compared with Drifter data. Although simulated hydrographic profiles agree well with in situ observations, the mean circulation patterns greatly differ between the models, which highlight the need for additional evaluation and corrections based on the long-term current measurements. Because of the lack of ocean current measurements, only the baroclinic velocities simulated by each model are reliable. The substantial part of the differences in barotropic velocities among the simulate result of four models is explained by the differing wind velocities from the corresponding atmospheric forcing datasets.

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Vertical viscosity coefficient increased for high-resolution modeling of the Tsushima/Korea Strait

Cited by 3 publications

References 23 publications

Prediction of potential fishing grounds of swordtip squid (Uroteuthis edulis) based on a physical–biochemical coupled model

Prediction of potential fishing grounds of swordtip squid (Uroteuthis edulis) based on a physical–biochemical coupled model

Wintering and advection of <i>Karenia mikimotoi</i> in Nagasaki Prefecture

Long-term mean circulation in the Japan Sea as reproduced by multiple eddy-resolving ocean circulation models

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