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The GROW Fine South China Sea (GFSCS) hindcast is Oceanweather's comprehensive study of the South China Seas.

The wave model grid spacing available in GFSCS is 25-km, and shallow water effects are included through a modern third-generation physics source term formulation. A 2D hydrodynamic model (HD) was used to model storm surge, without consideration of tidal effects, on a grid of 28-km spacing.

The hindcast regimes include high ranked typhoons and monsoons selected from as long a period of history as deemed viable for the reliable specification of the meteorological properties of historical storms. Therefore, tropical cyclones are included from the period July 1946 - November 1998. Monsoons are included within the period 1953-1997.

The operational series covers 1981-2000, which is a continuous 20-year period, and is somewhat shorter than the nominal global GROW simulation. Wind fields for the tropical storms and the monsoons were derived by application of Oceanweather's trademark Interactive Kinematic Objective Analysis (IOKA) technology. For the continuous hindcast, background wind fields are taken from the NCEP/NCAR Global Reanalysis (NRA) Project and systematic errors in those winds are minimized using new techniques based on comparative analysis of NRA and QuikSCAT satellite scatterometer winds. All reanalyzed storms within the 20 years of the continuous hindcast (1981-2000) were assimilated into the continuous wind fields. The influence of Southern Hemisphere cyclones on the wind fields in the southern part of the GFCS domain (e.g. Java Sea) was considered for the first time and the boundary of the 25-km grid was open to the adjacent seas with boundary conditions supplied by OWI's GROW global hindcast.

The products of GFSCS include, for each site of interest, the actual simulated hindcast time series from all models (continuous/typhoons/monsoons), wave spectra if available, and statistics. They can be purchased together or separately.

Grown Fine - China Seas

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Related Products


  • Time series of wind and wave parameters in ASCII or OSMOSIS format
  • Time series of surge height and integrated current for storm events
  • Return period extremes for wind speed, wave height (significant, maximum and crest) and wave period
  • Operability statistics expressed as monthly and annual frequency-of-occurence tables and persistence/duration statistics
  • Directional wave spectra


For more information please contact oceanwx@oceanweather.com


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