| Budget Amount *help |
¥23,660,000 (Direct Cost: ¥18,200,000、Indirect Cost: ¥5,460,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2014: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
Fiscal Year 2013: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
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| Outline of Final Research Achievements |
In this research project, we performed data assimilation using the four-dimensional variational method and the Ensemble Kalman Filter method (EnKF) to obtain the better representation of flow and water quality distributions in coastal areas and to develop the estimation method of various model parameters and conditions used in the water quality model. We assimilated data of surface current velocity collected by HF radar and temperature, salinity, chlorophyll, and dissolved oxygen (DO) collected by Osaka Bay Water Quality Automatic Observation System. Both the four-dimensional variational method and the ENKF significantly improved the distributions of water quality horizontally and vertically. In addition, methods for estimating model parameters in the water quality model using both data assimilation methods was developed and evaluated.
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