How about cooling down and fishing?

It is not easy to fish in shallow water, but easy to fish in deep water.

Shallow water fish are hard to catch in cool weather. When the temperature drops, the temperature difference of water temperature in shallow water area changes directly. When the temperature difference exceeds 2 degrees, the normal feeding of fish begins to be affected. When the temperature difference exceeds 10 degrees, it is difficult for the fish to open their mouths or have reached the deep water area. It is easy to catch deep-sea fish in cool weather. When the temperature drops suddenly, the temperature difference in the deep water area changes little or nothing.

However, the dissolved oxygen has been improved in different degrees. At this time, the fish are more active in foraging, which is a good time for fishermen to go fishing at sea. It's not easy to catch fish in the upper layer when the weather is cold. When the temperature drops suddenly, it will have a direct impact on fish (such as silver carp, bighead carp and white striped fish). ) They are used to foraging in the upper waters. Because the temperature difference of the water meter is too large or the water temperature becomes low, the phenomenon of fish in the upper layer often stops.

Influence of temperature change on water temperature

The change of outside temperature will always affect the change of water temperature, just like it is hot in summer, the water temperature will get warmer and it will freeze in winter. The density of water is greater than that of air, so the heat transfer and heat release of water is slower than that of the atmosphere. Generally speaking, if the temperature in a place changes to 20 degrees, the nearby water temperature often lags behind for 2 hours to reach this temperature.

In addition, the water temperature varies with the capacity and depth of water. For example, when the weather drops by five degrees, the water solubility is small (small water area), the water temperature in shallow water changes quickly, the water solubility is large (large water area), and the water temperature in deep water changes slowly.