Taiwan Ocean Prediction System

Taiwan Ocean Prediction System (TOPS), the high-resolution wave and ocean numerical models are operated by Taiwan Ocean Research Institute (TORI). In order to reduce computational time and increase the grid resolution, the one-way nested grids are adopted for Northwestern Pacific Ocean and the sea around Taiwan. The WAVEWACTCH-III models and the multi-scales Princeton Ocean Model (POM) are respectively used for the predictions of the wind wave and the three-dimensional ocean current. The variables of operational atmosphere forecast model (NCEP/GFS) are used as boundary conditions for TOPS which produces 168 hours forecasts on ocean waves, tides and currents in the future. Predictions are regularly published on the website and also used in many value-added applications such as maritime drift trajectory simulation, marine comprehensive exploitation, hazard mitigation and so on.

 

Domain

Range

Resolution (deg)

Bathymetry

Sea surface boundary

Frequency of the nested boundary

N2

99E~149E, 2N~41.2N

0.08

ETOPO1

NCEP

6-hour

T3

117E~124.5E, 18N~26.5N

0.02

ODB 500m

NCEP

1-hour

 

2012_N22012_T3

Bathymetry in the one-way nested model

 

Ocean prediction results around Taiwan
(wind field, sea surface current, sea surface temperature)

 

Marine and Coastal Geographical Information System https://topsgis.tori.org.tw/