Submesoscale eddies in Peter the Great Bay of the Japan/East Sea in winter

Fayman, Pavel A.; Ostrovskii, Alexander; Лобанов, В. Б.; Park, Jaehun; Park, Young-Gyu; Sergeev, A. F.

doi:10.1007/s10236-019-01252-8

Cited by 14 publications

(14 citation statements)

References 33 publications

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“…They found that the modeling results may be affected by the atmospheric forcing, the water exchange in the strait, and the sea ice formation near the northern coast. In addition, by the Lagrangian experiments of ROMS, Fayman et al (2019) confirmed the existence of mesoscale eddies near the Ussuri Bay and its specific function to carry dense water masses in Japan Sea.…”

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confidence: 77%

“…Lagrangian passive tracer is a useful tool to trace the origin and paths of large ocean current systems, which has been involved into the 3D regional models by Stepanov et al (2020) in the middle Japan Sea and by Prants et al (2022) and Fayman et al (2019) in the Peter the Great Bay. Stepanov et al (2020) explained the clustering phenomena of floating tracer in the middle Japan Sea by identifying a mesoscale ocean current field with various eddy structures.…”

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confidence: 99%

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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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confidence: 77%

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confidence: 99%

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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“…(6) Sixth is the Liman Current, which is a major current that passes over the trough slope and originates from near the Russian Tatar Strait in the north East Sea/Sea of Japan. The circulation and topographic features of the Japanese coast have been proven to induce mesoscale and submesoscale eddies [47][48][49].…”

Section: Study Areamentioning

confidence: 99%

The Characteristics of Submesoscale Eddies near the Coastal Regions of Eastern Japan: Insights from Sentinel-1 Imagery

Li,

He,

Wen

et al. 2024

JMSE

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A long-term time series of 319 Sentinel-1 SAR Imagery with Interferometric Wide Swath (IW) mode was used to study the characteristics of submesoscale eddies over Japanese coastal regions from 2015 to 2021, including spatiotemporal eddy properties and possible mechanisms of their formation. The results showed that around 98% of the 1499 eddies identified from the SAR snapshots were submesoscale eddies (horizontal scales of O1–20 km) with a ratio of around 78% cyclones to around 22% anticyclones. Around 8% of the submesoscale eddies were found in these SAR images in winter since the submesoscale current-induced signals are masked by the stronger wind speed, compared with other seasons. Typical features of submesoscale eddies are summarized, providing a preliminary qualitative analysis of potential generation mechanisms specific to the eddy characteristics in this region. This study suggests that Sentinel-1 images are capable of providing insights into the observed submesoscale eddies near the coastal regions of eastern Japan, thereby contributing to the improved understanding of the generation of submesoscale eddies.

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“…In this type, a carrier in which instruments are attached travels along the line at a predetermined interval. With a profiling system of this type, Aqualog (Ostrovskii et al, 2010(Ostrovskii et al, , 2013Ostrovskii and Zatsepin, 2011;Fayman et al, 2019), we have been monitoring southern coastal water of Korea since 2016 (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Coastal Observation Using a Vertical Profiling System at the Southern Coast of Korea

et al. 2021

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At a coastal station near the southern coast of Korea, the vertical profiles of temperature salinity dissolved oxygen and velocity were obtained using a vertical profiler, Aqualog, every summer from 2016 to 2020. At the site, fishing activity was not allowed, and it was possible to maintain the profiler continuously and stably. It was set to travel every one or 2 h for two to 4 months. Thus, we were able to observe the variations of the water properties from hourly to monthly scales. The sensors were contaminated much less than we expected, and the data could be used without correction at least for our coastal applications. The main phenomena we observed are tides, coastal warming, fresh water, and responses to typhoons. On the daily time scale, the most prominent phenomenon is semi-diurnal tides, with which the thickness and temperature of coastal warm waters changed. The warm water also showed fluctuations between 10 and 15 days. The data also revealed that the tide showed strong seasonality. In summer, when the water is strongly stratified, the tidal current is baroclinic, while in winter, when the water is well mixed, the current is barotropic. Responses to typhoon induced winds were rather complicated. In one case, increase in the upper mixed layer was observed. The thick mixed layer disappeared in about a day due to advection. In another case the upper mixed layer became thinner, while the wind became stronger due the advection of the offshore water. Hydrographic observations conducted every 2 months, of course, or point measurement at a surface buoy could not show such continuous changes. More and more local fishermen are showing interest in oceanographic information, and data from the profiler could be of much use to them.

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Submesoscale eddies in Peter the Great Bay of the Japan/East Sea in winter

Cited by 14 publications

References 33 publications

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

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

The Characteristics of Submesoscale Eddies near the Coastal Regions of Eastern Japan: Insights from Sentinel-1 Imagery

Coastal Observation Using a Vertical Profiling System at the Southern Coast of Korea

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