Open AccessA Numerical Study of The Outflow of Makassar Strait Using Regional Ocean Modelling System (ROMS)
Author(s) -
Ahmad Sirojudin Munir,
Yuki Novia Nasution,
Idris Mandang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/618/1/012012
Subject(s) - upwelling , outflow , forcing (mathematics) , geology , hydrography , current (fluid) , sea surface temperature , climatology , meteorology , oceanography , geography
In the Makassar Strait, upwelling occurred by wind-driven current and complexity of bottom topography. Analysis of upwelling phenomena could be determined by salinity, temperature and three-dimensional current value which happened in a year as a climatology change. Regional Ocean Modelling System (ROMS) is a terrain-following three-dimensional model to calculate a numerical value which needs stability for long-duration simulation. The model has been simulated for 1 year from 1 January 2017 to 31 December 2017 and verified by tidal data. Horizontal Boundary Condition which contains u-v velocities, salinity and temperature, is a climatology data from GLBa0.08 HYCOM. Atmospheric forcing was calculated from ERA-INTERIM ECMWF. The verification uses RMSE and RRE methods and showed good result between model and observation data with RMSE=0.1454 meter and RRE=6.5806%. The result was analysed from twelve sampling points, six points on the outflow of the Makassar Strait which generated upwelling and the six others on the canal that connect to the Flores Sea and the Java Sea. The model gave a good result on January, and indicate average w-velocity of 9.1183 m/day.