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Grd_overlap = 8 * 0.25° = 2°
2. Calculate Then calculate the resulting total number of core/free points in y-direction:
Grd_nj = (90° + 2*2°) / 0.25° = 376
That's it!
To learn more about Yin-Yang grids have a look at the following wiki page: Yin-Yang grid
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