ESS227
Prof. Jin-Yi Yu
Vertical Velocity in P-Coordinate
•Vertical Velocity in the Z-coordinate is w, which is defined as dz/dt:
•     w > 0 for ascending motion
•     w < 0 for descending motion
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•Vertical velocity in the P coordinate is ω (pronounced as “omega”), which is defined as dp/dt:
•     ω < 0 for ascending motion
•     ω > 0 for descending motion