Physical Processes in Sea Fog Formation and Characteristics of Turbulent Air-Sea Fluxes at Socheongcho Ocean Research Station in the Yellow Sea

Yun, Jin I.; Ha, Kyung‐Ja

doi:10.3389/fmars.2022.825973

Cited by 3 publications

(1 citation statement)

References 52 publications

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“…Unlike the constant SST in the uncoupled model, SST in the coupled model was updated at preset times, thus realizing the exchange of momentum and heat between the ocean and the atmosphere. Since sea fog is caused due to complex interactions between atmospheric and oceanic environments (Yun and Ha, 2022), this study investigated the effects of air-sea interactions on the formation, evolution, and dissipation of sea fog.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Simulations of sea fog case impacted by air–sea interaction over South China Sea

Han

Zhang²,

Feng³

et al. 2022

Front. Mar. Sci.

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A sea fog event in the South China Sea was simulated using a coupled ocean–atmosphere model (WRF for the atmosphere and ROMS for the ocean). Offshore and onshore visibility, liquid water content, air temperature, humidity, and wind speed observations and MICAPS data were utilized to validate the model results. The results of the coupled model were also compared with those of the uncoupled atmosphere model. Sea fog duration in the coupled model was closer to offshore and onshore observations, but the uncoupled model emptily forecasted offshore fog, and underreported onshore fog. Air–sea temperature difference played an important role in regulating the formation and dissipation of sea fog. The decrease of sea surface temperature in the coupled model cooled the low-level atmosphere, promoted the condensation of low-level water vapor, and increased the low-level water vapor. The decrease of air–sea temperature difference strengthened the low-level stable stratification, which weakened the horizontal wind speed and favored the formation and development of sea fog. Rising wind speed was the major driver of fog dissipation.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Simulations of sea fog case impacted by air–sea interaction over South China Sea

Han

Zhang²,

Feng³

et al. 2022

Front. Mar. Sci.

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Impact of greenhouse warming on mesoscale eddy characteristics in high-resolution climate simulations

Yun,

Ha,

Lee

2024

Environ. Res. Lett.

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Mesoscale eddies are prevalent throughout the global ocean and have significant implications for the exchange of heat, salt, volume, and biogeochemical properties. These small-scale features can potentially influence regional and global climate systems. However, the effects of climate change on ocean eddies remain uncertain due to limited long-term observational data. To bridge this knowledge gap, this study focuses on examining the impact of greenhouse warming on surface mesoscale eddy characteristics, utilizing high-resolution climate simulation project. Our model experiments have provided valuable insights into the potential effects of greenhouse warming on mesoscale eddies. They suggest that under greenhouse warming conditions, mesoscale eddies are likely to become more frequent and exhibit larger amplitudes and radii, especially in regions characterized by strong ocean currents such as the Antarctic Circumpolar Current and Western Boundary Currents. However, an intriguing pattern emerged in the Gulf Stream, where increased eddy occurrence and radius coincided with a significant decrease in amplitude. This phenomenon can be attributed to the influence of eddy lifespans, as the increased occurrence of long-lived eddies in the Kuroshio Current led to amplified amplitudes, whereas the decreased occurrence of long-lived eddies in the Gulf Stream resulted in a significant decrease in amplitude. The distinction arises from the capacity of eddies with longer lifespans to accumulate more energy compared to their shorter-lived counterparts. These findings provide valuable insights into the complex dynamics of mesoscale eddies in a warming world.

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The Effect of Sea Surface Temperature on Relative Humidity and Atmospheric Visibility of a Winter Sea Fog Event over the Yellow-Bohai Sea

Liu

Wang

et al. 2022

Atmosphere

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Sea fog is one of the main types of dangerous weather affecting offshore operations. The sea surface temperature (SST) has an important influence on the water vapor content and intensity of sea fog. In order to study the impact of SST on local relative humidity and atmospheric visibility, a sea fog episode that occurred over the Yellow Sea and Bohai Sea on 21 January 2013 was investigated through observational data, reanalysis data, and Weather Research and Forecasting (WRF) simulation. The results show that the influence of SST on the distribution of sea fog with different properties is inconsistent. Based on the time-varying equation of relative humidity, the changes in the advection, radiation, and turbulence effects on the relative humidity with respect to SST are explored through control and sensitivity experiments. The results show that the advection effect plays a decisive role in the generation and dissipation stages of sea fog. The increase (decrease) in SST weakens (strengthens) the radiative cooling and relative humidity. The contribution magnitude of advection effect to relative humidity is 10−5, while those of radiation and turbulence are 10−6 and 10−7, respectively. The atmospheric visibilities in the Bohai Sea and northern Yellow Sea decrease with increasing SST, which are mainly affected by the positive turbulence effect; whereas the atmospheric visibility in the central and southern Yellow Sea increases with SST, which is mainly influenced by the combined effects of U-direction advection, radiation, and turbulence. The stability related to boundary layer height plays an important role in water vapor condensation.

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Physical Processes in Sea Fog Formation and Characteristics of Turbulent Air-Sea Fluxes at Socheongcho Ocean Research Station in the Yellow Sea

Cited by 3 publications

References 52 publications

Simulations of sea fog case impacted by air–sea interaction over South China Sea

Simulations of sea fog case impacted by air–sea interaction over South China Sea

Impact of greenhouse warming on mesoscale eddy characteristics in high-resolution climate simulations

The Effect of Sea Surface Temperature on Relative Humidity and Atmospheric Visibility of a Winter Sea Fog Event over the Yellow-Bohai Sea

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