Why is it good to enjoy the cool under the big tree? Explain from the physical point of view One of the points is that the evaporation of water on the surface of leaves needs to absorb heat and play a cooling role. Our teacher also said that it is related to air flow. I didn't hear it clearly. Please help me to explain the relationship between enjoying the cool under the big tree and air flow

Why is it good to enjoy the cool under the big tree? Explain from the physical point of view One of the points is that the evaporation of water on the surface of leaves needs to absorb heat and play a cooling role. Our teacher also said that it is related to air flow. I didn't hear it clearly. Please help me to explain the relationship between enjoying the cool under the big tree and air flow

Because the sun can't directly reach the tree, the temperature will be higher than the surrounding direct range, forming a temperature difference, which also produces a pressure difference. The temperature is high, the pressure is low, the temperature is low, the pressure is high, and the pressure difference makes the air flow, so it will feel cooler under the tree, Don't you think that the speed of wind blowing in a room with heating in winter is faster than that in summer