2. Pressure Flashcards
1
Q
Units of measurement
A
Inches of mercury in altimetry
Hectopascals used in weather maps
2
Q
Station pressure
A
Weight of the air above the airport/station that is measured.
Pressure always decreases with tight
3
Q
Mean sea level pressure
A
Station pressure plus weight of imaginary column of air between the station elevation and MSL
4
Q
Isobar
A
Line joining points of equal pressure on a surface map drawn in 4 hPa intervals
5
Q
Trough of low pressure
A
Elongated areas of low pressure with the lowest pressures forming a line of relative minimum pressure (TROF)
6
Q
Ridge of high pressure
A
Elongated areas of high pressure with the highest pressures forming a line of relative max pressure
7
Q
Col
A
Neutral pressure area between 2 highs and 2 lows, intersection of a trough and ridge
