Air peressure and wind and global patterns of wind

Air peressure and wind and global patterns of wind - AIR...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
*** Air Pressure: the molecules that constitute air creates pressure through their motion, size, and number ** Pressure Gradient Force (PGF): cold air exerts more pressure because it is more dense, warm air exerts less pressure because it is less dense. The differences between the 2 establishes the PFG ** initiates horizontal air flow = WIND *** air pressure & the PGF determine wind direction & wind strength or speed. ** Steep gradient == strong PGF == fast winds ** Gentle gradient == weak PGF == light(slow) winds *** Coriolis Force : everything in the northern hemisphere has a tendancy to move right and air in the southern hemisphere moves left. Both head toward the equator * earth is a sphere * objects move independent of the earth's rotation * the whole earth's surface does not spin at the same rotational velocity * deflection is : (with your back to the wind) ** Characteristics of Coriolis Force(CF): * it is strongest at the poles & zero at the equator * an objects speed will alter the amount of deflection increase speed = increase deflection
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

Air peressure and wind and global patterns of wind - AIR...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online