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Abstract: This paper presents an efficient algorithm for generating a spherical multiple-cell (SMC) grid. The algorithm adopts a recursive loop structure and provides two refinement methods: (1) an arbitrary area refinement method and (2) a nearshore refinement method. Numerical experiments are carried out, and the results show that compared with the existing grid generation algorithm, this algorithm is more flexible and operable.
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Key words:
- spherical multiple-cell grid /
- wave model /
- WAVEWATCH III /
- grid generation algorithm
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Table 1. Comparison of grid generation algorithms
Met Office Durrant and
SaulterThis paper Refinement method nearshore
refinementrectangular area refinement arbitrary area refinement and
nearshore refinementLevel of refinement fixed unfixed unfixed Degree of
completioncompleted under development completed Table 2. Resolution list
Algorithm Region Resolution 4-level SMC grid nearshore lat: 0.058°, lon: 0.087° nearshore lat: 0.116°, lon: 0.174° nearshore lat: 0.232°, lon: 0.348° open sea lat: 0.464°, lon: 0.696° 6-level SMC grid nearshore (China) lat: 0.014°, lon: 0.021° nearshore (China) lat: 0.028°, lon: 0.042° offshore (China) lat: 0.058°, lon: 0.087° Northwest Pacific lat: 0.116°, lon: 0.174° North Pacific lat: 0.232°, lon: 0.348° global lat: 0.464°, lon: 0.696° -
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