the air temps have been unusually mild as of late, and unusually inverted. *normally the air cools with increasing altitude. *an inversion occurs when the air at the surface is cooler than the air above it. *this occurs most nights when the cooler air settles in the valleys. *if there is enough humidity, fog *will form there. *this situation usually reverses shortly after daybreak as the surface warms, the fog clears, and the surface again becomes warmer that the air above.
we have had some days during the last week where the surface temps failed to rise enough to break this inversion, mostly because we have been under the center of a strong dome of high pressure. *byron has noted in his fishing report today that the temps failed to reach the predicted high. *
i usually fish the elk, a tailwater with lots of generation, in which the water temp is not affected as much by air temps. *i was able to fish thursday, and again yesterday. *i did catch a few, but noticed that the fish were much less active than normal.
i was wondering if anyone has studied the effects of temperature inversion and fish activity. *if there is an effect there it might even suggest the opposite case, *i.e. very unstable air like that which precedes a frontal passage would increase fish activity.
i used to keep up with air stability indices when i flew gliders. *i haven't checked them for a while now, but they are probalby readily available. *maybe this could be an alternative predictor for when the cows are in the barn. *