However, the anomaly circulations also induce advections that alter the wind and thermal fields, so IPV anomalies are just not something passively being carried along in the flow. Rather, they modify that flow, and the modifications, in turn, induce further changes. This complex, nonlinear process is best viewed in the IPV framework, I am coming to believe. It's habits , and what we grew up with in our meteorological education. I suspect we might find IPV just as intuitive and compelling if that had been what we learned right from the outset.
Old habits die hard, and old perspectives can linger well beyond their period of usefulness.
IPV may just be a fad, but I am now less inclined to believe that. These inferences include both the conventional vorticity advection and thermal advection contributions associated with the QG Omega Equation. In this way, IPV approaches are yet a third alternative way to do such estimation, since Q-vectors are a second way to combine the separate terms in the QG Omega Equation. I suspect I will have more updates to this page in the future. Observations and Theory of Weather Systems .