| Popis: |
To study the seawater volume change due to the warming of the oceans, this work adapts the Modular Ocean Model Version 4 (MOM4) oceanic general circulation model, which does not consider the Boussinesq approximation, to regional model. Simulation data of Climate Model 2.1 (CM2.1), the Hadley Center Coupled Climate Model 3 (HADCM3), and the Model for Interdisciplinary Research on Climate 3.2 (MIROC3.2), provided by the Intergovernmental Panel on Climate Change (IPCC), were used as initial and boundary values, and the Special Report on Emissions Scenarios (SRES) A1B and B1 were selected as the global warming scenarios. The Northwestern Pacific region, which includes Korea, was selected as the study area, and the Yellow Sea, which has a complex coastline, was expressed in detail by increasing the resolution. The average values of the results for the three experiments include a temperature/sea level increase of approximately 3 ??C/35 cm from 2000 to 2100 in SRES A1B, and approximately 2 ??C /27 cm in SRES B1. The East Sea experienced a larger change owing to the steric effect and showed a larger influence resulting from density changes as the temperature of the Tsushima Warm Current, which passes through the Korea Strait, increased. The result of the study that directly considered the steric effect predicted a higher sea level rise than that of indirect computation because the indirectly computed dynamic height was eliminated; sea level rise in a shallow area cannot be computed, and the unchanged volume serves as undersea pressure. Moreover, the Kuroshio Current, which is a major current in the Northwestern Pacific, showed a decrease in transport as global warming progressed. Despite the differences between models, a decrease of 4???5 SV in transport was observed for 2100; however, there was no notable change in the transport of the Tsushima Warm Current. |
