Old as Dirt!
For the sake of the exercise, click over to passageweather.com, click on the sector map for the North Atlantic or overall Pacific, then scroll down to the Surface Pressure analysis rendering and click through the forecasts noting the rate at which the isobars move. Then judge how well that theory might be applied.I read somewhere but cannot find the reference anymore, about a technique to follow the trades by following barometric pressure lines.
I guess, it goes down, you go up, it goes up, you go down. In the context of following a the Pacific High , from the West coast to Hawaii.
Does that work , in practice ? Is there more documentation about this online somewhere ?