This real-time ocean forecasting system adopts the DREAMS_Ep model (Liu and Hirose, 2022). It is a 3-dimensional primitive equation model based on the Research Institute for Applied Mechanics Ocean Model (RIAMOM) originally developed by Lee et al. (2003). Its horizontal resolution is 1/60° × 1/75° corresponding to about 1.5 km, and it has 114 levels in the vertical direction. The model covers a rectangle region of 126–132.65°E and 26–33.24°N. The topography is derived from JTOPO30 dataset provided by the Marine Information Research Center of the Japan Hydrographic Association (http://www.mirc.jha.jp). The open boundary conditions are from the output of DREAMS_M model (Hirose et al., 2013). The meteorological forcing data are GSM and MSM data provided by Japan Meteorological Agency. Satellite altimeter observations obtained from the AVISO website (https://aviso.altimetry.fr), HIMAWARI SST observations provided by JAXA website (https://earth.jaxa.jp/en/), and Smart-ACT CTD (Takikawa et al., 2019) and ADCP measurments by fishermen are assimilated using an approximate Kalman filter based on Fukumori and Malanotte-Rizzoli (1995) to improve the accuracy of the forecasting system.
The 10-day forecasting is updated everyday at 09:00 JST (00:00 UTC).
Modification Date: Jan 22, 2024