| Budget Amount *help |
¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2011: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2010: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2009: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
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| Research Abstract |
High-resolution and high-accuracy data assimilation system is developed to study the ocean changes around Japanese archipelago. The new model is nested in a basin-scale model of the northwestern Pacific. The empirical parameters such as friction, diffusion or viscosity coefficient are carefully optimized by using model Green’s functions. Major tidal constituents are alsocalibrated by the data assimilation. The sea surface height and temperature data are assimilated to the regional model by the approximate Kalman filter and the nudging method, respectively. The assimilated and non-assimilated results are shown to be more realistic compared to the previous system in terms of surface variability, subsurface temperature bias, strait transport changes, and many others. The variation of the Tsushima Warm Current is also accurately represented by the new model.All the calculations and input/output sequences are automated and the latest forecastresults can be easily visualized at our website.
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