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It's wrong to speak of a "T62 Gaussian grid" or similar. T62 describes the truncation of spherical harmonics, which have no relation to Gaussian grids except that they are often used together in numerical weather prediction or climate models (spherical harmonics for atmospheric physics, Gaussian grids for surface physics and parameterizations). There may be advantages to use certain types of Gaussian grids together with a given truncation, but there's no 1:1 relation. A Gaussian grid is defined by the numbers of latitudinal and longitudinal grid points alone. And the vertical resolution of a model has no relation to Gaussian grids at all. --188.8.131.52 (talk) 21:00, 27 September 2008 (UTC)
The gridpoints along each longitude (meridian) are equally spaced, while they are unequally spaced along each latitude (parallel), where they are defined by their Gaussian quadrature. There are no grid points at the poles. By contrast, in the "normal" geographic latitude-longitude grid, gridpoints are equally spaced along both latitudes and longitudes
Huh? Gaussian quadrature is a way of adjusting the sample points for numerical integration; what's the function to be integrated along a line of latitude? —Tamfang (talk) 00:32, 7 July 2012 (UTC)