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Isaac Held develops physical explanations of atmospheric circulation and its remote responses. His demonstration of teleconnections uses localized tropical heating in a rotating-sphere model to generate a stationary Rossby wave response extending into other latitudes.^[ref]

This supplies a dynamical pathway connecting a tropical forcing with distant pressure and circulation patterns. It goes beyond observing a statistical correlation by testing how the atmospheric flow transports the disturbance.

Isaac Held's authored demonstration of a rotating-sphere response to localized equatorial heating and an explanation of extratropical ENSO patterns. Used for the wave pathway behind teleconnections, not as a Cambridge examination answer.