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An air parcel at latitude = 20◦N, moving northward (conserving absolute vorticity), initial relative vorticity =...

An air parcel at latitude = 20◦N, moving northward (conserving absolute vorticity), initial relative vorticity = 6.4 × 10−5 s −1 . Please calculate the relative vorticity of the air parcel when it reaches 52◦N.

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