Absolute velocity

absolute velocity

Velocity as measured in an absolute coordinate system; hence, in meteorology, the (vector) sum of the velocity of a fluid parcel relative to the earth and the velocity of the parcel due to the earth's rotation.

The east–west component is the only one affected:

where u and u_a are the relative and absolute eastward speeds, Ω the angular speed of the earth's rotation, r the radial distance of the parcel from the center of the earth, and φ the latitude of the parcel.

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Velocity as measured in an absolute coordinate system; hence, in meteorology, the (vector) sum of the velocity of a fluid parcel relative to the earth and the velocity of the parcel due to the earth's rotation.
The east–west component is the only one affected:

where u and u_a are the relative and absolute eastward speeds, Ω the angular speed of the earth's rotation, r the radial distance of the parcel from the center of the earth, and φ the latitude of the parcel.