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In, Teiji*; Ishikawa, Yoichi*; Shima, Shigeki*; Nakayama, Tomoharu*; Awaji, Toshiyuki*; Kobayashi, Takuya; Kawamura, Hideyuki; Togawa, Orihiko
no journal, ,
We have been developing an oceanic nowcasting/forecasting system for the coastal area near Rokkasho village. The seasonal variation in this region is characterized by the coastal mode in a cold season and the gyre mode in a warm season. A downscaling method is an effective approach for the accurate nowcast/forecast, since it enables us to use a high resolution 4-dimensional variational data assimilation. Our results demonstrate the good performance of reproducing both modes.
Hirose, Naoki*; Moon, J.-H.*; Kawamura, Hideyuki; Okei, Noriyuki*
no journal, ,
To study comprehensively the marine system in the East Asian region, we are currently extending the prediction model of the Japan/East Sea to the broader northwestern Pacific region. Because we find that tide gauge data improves coastal current significantly, a new gauge is installed at Hegura Island in this summer. Strong sea level changes are found in coastal region of the East China Sea associated with the local wind variation and the river discharge.