Examples of scales in geography and metereology Scale Length Area Description Micro 1 m – 1 km 1 m2 – 1 km2 local Meso 1 km - 100 km 1 km2 - 10,000 km2 regional Macro 100 km - 10,000 km 10,000 km2 - 100,000,000 km2 continental Mega > 10,000 km > 100,000,000 km2 global