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Missing Image:IMG height=19
In meteorology, an expression relating the curvature of the trajectory
Ki of a fluid parcel
to the streamline
is the parcel speed, Missing Image:IMG height=17
width=54 is the local change of wind direction, Missing Image:IMG height=14
width=14 is the wind angle, and t is time. The curvatures and change
of wind direction are positive for cyclonic flow.
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use