ESS124
Prof.
Jin-Yi Yu
ESS124
Prof.
Jin-Yi Yu
Pressure
Surface
• A pressure surface is a
surface above the
ground where the pressure has a specific value, such as 700mb.
•Constant pressure surfaces slope downward from the warm to the cold side.
•Since the atmosphere in the polar regions is cold and the tropical atmosphere is cold, all pressure surfaces in the troposphere slope downward from the tropics to the polar regions.