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A case study on the impact of real-time land cover changes in the intertidal zone on coastal meteorological predictions using a coupled atmosphere–ocean model

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Abstract

The effect of time-varying land cover within the intertidal zone on meteorological predictions was evaluated on the west coast of South Korea during the summer of 2020 (July 3–8). Time-varying spatial distributions of the intertidal zone were generated using a coupled atmosphere–ocean model and Landsat-8 satellite data. Meteorological simulations were conducted under two land cover conditions: time-varying (referred to as TIDE) and fixed land cover (no tidal effect) within the intertidal zone (referred to as CTRL). In general, the results of TIDE simulation exhibited good agreement with the observed meteorological data when compared to the CTRL simulations. The most significant air temperature (Temp) and relative humidity (RH) variations in the entire intertidal zone occurred during low tide in the daytime, showing an average Temp increase of + 2.0 ℃ and a RH decrease of − 9.2% compared to the CTRL simulation. Conversely, during nighttime, the Temp decreased by an average of − 0.5 ℃ and the RH increased by + 0.1%. These variations were primarily attributed to changes in the physical properties of the soil surface. Furthermore, the nighttime wind speed (WS) during low tide in the entire intertidal zone exhibited the most significant decrease, averaging − 0.4 m s−1, mainly due to an increase in surface roughness length. Conversely, daytime WS showed the slight increase, averaging 0.2 m s−1, due to an intensified Temp gradient between the intertidal zone and the open sea. This study underscores the non-negligible influence of land cover changes within the intertidal zone on meteorological conditions in inland areas.

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Acknowledgements

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (2020R1A2C2011081 and 2023R1A2C1002367). This research was also supported by Korea Institute of Marine Science & Technology (KIMST) funded by the Ministry of Oceans and Fisheries (RS-2023-00256330, Development of risk managing technology tackling ocean and fisheries crisis around Korean Peninsula by Kuroshio Current).

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Correspondence to Sang-Keun Song or Zang-Ho Shon.

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Ko, EA., Song, SK., Moon, SH. et al. A case study on the impact of real-time land cover changes in the intertidal zone on coastal meteorological predictions using a coupled atmosphere–ocean model. Meteorol Atmos Phys 136, 14 (2024). https://doi.org/10.1007/s00703-024-01009-z

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  • DOI: https://doi.org/10.1007/s00703-024-01009-z

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