A genetic approach to modeling it was created by Tor Bergeron and modified by Helmut Landsberg, while empirical schemes include the Holdridge system, which generates a triangular or pyramidal diagram, and the Budyko model.
One system designed to model this was developed at Seabrook Farms in the 1930s by C. Warren Thornthwaite. That system of modeling this often uses a formula named for Howard Penman and a measure known as the thermal efficiency index. A genetic approach to modeling it was created by Tor Bergeron and modified by Helmut Landsberg, while empirical schemes include the Holdridge system, which generates a triangular or pyramidal diagram, and the Budyko model. The most commonly used method of classifying it was modified by Glenn Trewartha, and that system is named for Vladimir Koppen, who created five categories labeled A through E to describethis by deriving equations to map the boundaries of ecotones. Koppen later added the letter H to describe highland regions. For 10 points, name this measure which varies in different biomes, used to describe the general weather you might encounter in a region.
One system designed to model this was developed at Seabrook Farms in the 1930s by C. Warren Thornthwaite.
climate [I wouldn't accept many equivalents - they're all explicitly "climate classifications"]