Spatial scale provides a "shorthand" form for discussing relative lengths, areas, distances and sizes of geographic features or conditions. A microclimate, for instance, is one which might occur in a mountain valley or near a lakeshore, whereas a megatrend is one which involves the whole planet.
It is important to realize that these divisions are more or less arbitrary, and where, on this table, mega- is assigned global scope, it may only apply continentally or even regionally in other contexts. The interpretations of meso- and macro- must then be adjusted accordingly.
|Micro||1 m - 1 km||1 m2 - 1 km2||local|
|Meso||1 km - 100 km||1 km2 - 100 km2||regional|
|Macro||100 km - 10 000 km||100 km2 - 10 000 km2||continental|
|Mega||> 10 000 km||>10 000 km2||global|