AOS final exam
wind - Answer-movement of the atmosphere
magnitude - Answer-size and strength
force - Answer-magnitude and direction
pressure gradient force - Answer-compels fluid to move from high pressure to low pressure, along the
shortest path.
perpendicular to isobars
coriolis force - Answer-NH - acts to right of motion
SH - acts to left of motion
result of earth rotating on it's axis.
-does not change an objects speed
-does not affect resting, only moving
-cannot create wind, only change it's direction.
if it's positive, it's moving the same direction as earth's rotation.
earths rotation rate - Answer-7.252x10-5 rotations/second
friction - Answer-always acts in opposite direction of the motion
, force balance - Answer-equal and opposite
surface forces - Answer-PGF, Coriolis, Friction
how to draw surface forces - Answer-1. velocity/direction
2. friction is opposite that
3.coriolis is a right angle (NH) or left angle (SH) of motion.
4. combine friction and coriolis
5. that is pgf (opposite.)
geostrophic balance/forces - Answer-winds aloft
PGF and coriolis
geostrophic winds - Answer-wind resulting from geostrophic balance
-always parallel to isobars
-proportional to horizontal spacing of isobars
(isobars close: big PGF and Coriolis: large geostrophic wind)
changes in local rate of spin are... - Answer-directly related to the production of divergence and
convergence at upper levels.
vorticity - Answer-measure of the rate of spin of the air.
-ex. frigid air rushes over large lake in early winder: steam devils.
positive vorticity - Answer-counterclockwise spin of air
wind - Answer-movement of the atmosphere
magnitude - Answer-size and strength
force - Answer-magnitude and direction
pressure gradient force - Answer-compels fluid to move from high pressure to low pressure, along the
shortest path.
perpendicular to isobars
coriolis force - Answer-NH - acts to right of motion
SH - acts to left of motion
result of earth rotating on it's axis.
-does not change an objects speed
-does not affect resting, only moving
-cannot create wind, only change it's direction.
if it's positive, it's moving the same direction as earth's rotation.
earths rotation rate - Answer-7.252x10-5 rotations/second
friction - Answer-always acts in opposite direction of the motion
, force balance - Answer-equal and opposite
surface forces - Answer-PGF, Coriolis, Friction
how to draw surface forces - Answer-1. velocity/direction
2. friction is opposite that
3.coriolis is a right angle (NH) or left angle (SH) of motion.
4. combine friction and coriolis
5. that is pgf (opposite.)
geostrophic balance/forces - Answer-winds aloft
PGF and coriolis
geostrophic winds - Answer-wind resulting from geostrophic balance
-always parallel to isobars
-proportional to horizontal spacing of isobars
(isobars close: big PGF and Coriolis: large geostrophic wind)
changes in local rate of spin are... - Answer-directly related to the production of divergence and
convergence at upper levels.
vorticity - Answer-measure of the rate of spin of the air.
-ex. frigid air rushes over large lake in early winder: steam devils.
positive vorticity - Answer-counterclockwise spin of air
