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Example for Yin-Yang grid centered over Africa at : Grd_xlat1 = 24.5 , Grd_xlon1 = 22.
Note that the overlap is 3 times larger on the left and right border than at the top and bottom! This is done because the solver needs the grids to be 3 times larger in x- than in y-direction (minus 1 point).
When projected on a regular latlon grid the two LAM grids would look like this:
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