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RESEARCH

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Ocean

✨ Research Overview

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Physical oceanography

Sea Surface Temperature (SST),

Sea Surface Salinity (SSS)

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Biochemical oceanograpy

Coastal Water Quality,

Harmful Algal Blooms,

Blue carbon

Air-sea interaction

Ocean-Fog

📚 Representative Works

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Sea Surface Temperature (SST)

    Sea surface temperature (SST) plays a key role in air-sea heat exchange, but infrared satellite observations are subject to observation gaps caused by clouds and noise, while numerical models are computationally intensive and take a long time to reflect real-time conditions. CARE-SST and PARAN are two deep learning techniques that fuse physical and background information with satellite observation data to reconstruct high-resolution SST distributions without observational gaps.

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  • CARE-SST: a context-aware denoising diffusion model that fuses VIIRS infrared imagery with OISST background fields to produce global, daily, ~2 km gap-filled SST, recovering fine-scale currents and fronts even under heavy cloud cover.

  • PARAN: a Physics-Assisted Reconstruction Adversarial Network combining Himawari-8 geostationary data with physical drivers (solar radiation, wind speed) via GAN to generate continuous, 2 km, hourly SST over the Northwest Pacific (2019–2021), accurately capturing diurnal warming.

Jung et al., 2025

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Choo et al., 2025

📝 Publications

Last updated : 2026/09/07

Cho, H., Jung, S., Im, J., Kim, S.-H., & Bae, D. (2026). Global three-dimensional Chlorophyll-a retrieval via profile classification and structural parameterization. IEEE Transactions on Geoscience and Remote Sensing, 64.

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Jung, S., Kim, S.-H., Jang, E., Lee, J., Han, D., & Im, J. (2025). Robust daily satellite sea surface salinity reconstruction using deep learning in low-salinity coastal region. Marine Pollution Bulletin, 221, 118462.

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Jung, S., Im, J., & Han, D. (2025). PARAN: A novel physics-assisted reconstruction adversarial network using geostationary satellite data to reconstruct hourly sea surface temperatures. Remote Sensing of Environment, 323, 114749.

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Sung, T., Kim, S.-H., Sim, S., Han, D., Jang, E., & Im, J. (2025). Expanding high-resolution sea surface salinity estimation from coastal seas to open oceans through the synergistic use of multi-source data with machine learning. International Journal of Applied Earth Observation and Geoinformation, 137, 104427.

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Choo, M., Jung, S., Im, J., & Han, D. (2025). CARE-SST: Context-aware reconstruction diffusion model for sea surface temperature. ISPRS Journal of Photogrammetry and Remote Sensing, 220, 454–472.

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Jang, E., Han, D., Im, J., Sung, T., & Kim, Y. J. (2024). Deep learning-based gap filling for near real-time seamless daily global sea surface salinity using satellite observations. International Journal of Applied Earth Observation and Geoinformation, 132, 104029.

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Sim, S., Im, J., Jung, S., & Han, D. (2024). Improving Short-Term Prediction of Ocean Fog Using Numerical Weather Forecasts and Geostationary Satellite-Derived Ocean Fog Data Based on AutoML. Remote Sensing, 16(13), 2348.

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Sim, S., & Im, J. (2023). Improved ocean–fog monitoring using Himawari-8 geostationary satellite data based on machine learning with SHAP-based model interpretation. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 16, 7819–7837.

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Kim, Y. J., Han, D., Jang, E., Im, J., & Sung, T. (2023). Remote sensing of sea surface salinity: challenges and research directions. GIScience & Remote Sensing, 60(1). 

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Jang, E., Kim, Y. J., Im, J., Park, Y.-G., & Sung, T. (2022). Global sea surface salinity via the synergistic use of SMAP satellite and HYCOM data based on machine learning. Remote Sensing of Environment, 273, 112980.

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Jung, S., Yoo, C., & Im, J. (2022). High-Resolution Seamless Daily Sea Surface Temperature Based on Satellite Data Fusion and Machine Learning over Kuroshio Extension. Remote Sensing, 14(3), 575.

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Jang, E., Kim, Y., Im, J., & Park, Y. G. (2021). Improvement of SMAP sea surface salinity in river-dominated oceans using machine learning approaches. GIScience & Remote Sensing, 1-23.

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Jung, S., Kim, Y., Park, S., & Im, J. (2020). Prediction of Sea Surface Temperature and Detection of Ocean Heat Wave in the South Sea of Korea Using Time-series Deep-learning Approaches. Korean Journal of Remote Sensing., 36(5), 1077-1093.

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Jang, E., Im, J., Park, G. H., & Park, Y. G. (2017). Estimation of fugacity of carbon dioxide in the East Sea using in situ measurements and Geostationary Ocean Color Imager satellite data. Remote Sensing, 9(8), 821.

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Kwon, Y. S., Jang, E., Im, J., Baek, S. H., Park, Y., & Cho, K. H. (2018). Developing data-driven models for quantifying Cochlodinium polykrikoides using the Geostationary Ocean Color Imager (GOCI). International Journal of Remote Sensing, 39(1), 68-83.

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Pyo, J., Ha, S., Pachepsky, Y. A., Lee, H., Ha, R., Nam, G., ... & Cho, K. H. (2016). Chlorophyll-a concentration estimation using three difference bio-optical algorithms, including a correction for the low-concentration range: the case of the Yiam reservoir, Korea. Remote Sensing Letters, 7(5), 407-416.

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Jang, E., Im, J., Ha, S., Lee, S., & Park, Y. G. (2016). Estimation of Water Quality Index for Coastal Areas in Korea Using GOCI Satellite Data Based on Machine Learning Approaches. Korean Journal of Remote Sensing, 32(3), 221-234.

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Kim, Y. H., Im, J., Ha, H. K., Choi, J. K., & Ha, S. (2014). Machine learning approaches to coastal water quality monitoring using GOCI satellite data. GIScience & Remote Sensing, 51(2), 158-174.

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