Defining Climate

Annual Averages and Variation

Fifty thousand years ago, the united states had much different weather patterns than those that exist today.


Is the study of earths climate and the factors that cause past, present, and future climatic changes.


Data used to describe an area's climate are compiled from meteorological records, which are continuously gathered at thousands of locations around the world.


Topographic effects

Water heats up and cools down more slowly than land. Thus, large bodies of water affect the climates of coastal areas.

Air Masses

Two of the main causes of weather are the movement and interaction of air masses.