Question

Which one of the following about the tropical cyclone movement is false?

(a) Upper air westerly trough can cause abrupt change in moving direction of a tropical cyclone ;
(b) Left on its own, a tropical cyclone in the Northern Hemisphere has an inertial tendency to drift towards the southwest;
(c) Fujiwhara effect refers to the interactions between two or more tropical cyclones;
(d) Over the western North Pacific, tropical cyclones use to travel along the south to southwestern flank of the subtropical ridge to the northwest.

Answer 1

(c) Fujiwhara effect refers to the interactions between two or more tropical cyclones.

This statement is false. The Fujiwhara effect refers to the interaction between two tropical cyclones when they come within a certain distance of each other. Instead of merging or colliding, the cyclones rotate around a common center of circulation. This effect is more common when the cyclones are of similar strength and occur in proximity to each other.