Hazardous Earth - Climate - Atmospheric pressure Flashcards
What is Atmospheric Pressure?
The ‘weight’ of the air and the force it exterts on the ground.
What is the average air pressure?
1000 millibars
What is the Inter-Tropical Convergence Zone? (ITCZ)
A permanent zone of low pressure
Where does the Inter-Tropical Convergence Zone(ITCZ) occur?
It occurs near the equator between 2 Hadley cells, where warm tropical air flows towards the equator from north to south
What is a Hadley Cell
a large-scale atmospheric convection cell in which air rises at the equator and sinks at medium latitudes, typically about 30° north or south.
How do low atmospheric pressure and high atmospheric pressure occur
They are caused by ascending and decending air
what is the difference between a isobar and a millibar?
is that millibar is a non-si unit of pressure equal to 100 pascals, used primarily to report atmospheric pressure while isobar is (meteorology) a line drawn on a map or chart connecting places of equal or constant pressure
