insolation
The amount of the Sun’s energy that reaches Earth at a given time and place. Insolation is short for solar radiation
atmosphere
The blanket of gases that surrounds earth.
troposphere
The layer of the atmosphere closest to the surface
air pressure
The force put on a given area by the weight of the air above it.
weather
What the lower atmosphere is like at any given time
barometer
A device for measuring air pressure