The GDPFS guidelines define verification domains for verification against analyses as "...the grid points within each area, including points on the boundary...". The following table provides the clarification how the rule applies on a regular 1.5°x1.5° grid.
Domain | GDPFS definition | List of grid points on a regular 1.5°x1.5° grid |
| Northern hemisphere extra-tropics | 90°N - 20°N, inclusive, all longitudes | 90°N - 21°N, all longitudes |
| Southern hemisphere extra-tropics | 90°S - 20°S, inclusive, all longitudes | 90°S - 21°S, all longitudes |
| Tropics | 20°N - 20°S, inclusive, all longitudes | 19.5°N - 19.5°S, all longitudes |
| North America | 25°N - 60°N, 50°W - 145°W | 60°N - 25.5°N, 51°W - 144°W |
| Europe/North Africa | 25°N - 70°N, 10°W - 28°E | 69°N - 25.5°N, 9°W - 27°E |
| Asia | 25°N - 65°N, 60°E - 145°E | 64.5°N - 25.5°N, 60°E - 144°E |
| Australia/New Zealand | 10°S - 55°S, 90°E - 180°E | 10.5°S - 54°S, 90°E - 180°E |
| Northern polar region | 90°N - 60°N, inclusive, all longitudes | 90°N - 60°N, all longitudes |
| Southern polar region | 90°S - 60°S, inclusive, all longitudes | 90°S - 60°S, all longitudes |