Model output discussion - Post SSW - Will it turn cold? in Model Discussion Archive Posted February 16, 2018 10 minutes ago, Yarmy said: All the models subdivide the atmosphere into a grid of 3D cells. Each cell in the grid is a cuboid (or icosahedron in the case of the ICON) sharing the same properties: temperature, pressure, etc. The smaller the cells, the higher the resolution and (hopefully) the more accurate the model. thanks. And thanks for the others that replied.