High school geography problem, related to frontal cyclone.

The weather system pays attention to weather changes.

Frontal cyclone = Frontal (cold front, warm front)+cyclone

Cold front, warm front and tornado can be accompanied by rainy weather, so frontal cyclone has superposition effect on rainy weather.

Anti-cyclone is a high pressure, controlled by clear weather, and cannot be superimposed on the front.

2.

The front is the meeting of cold and warm air masses. The properties of cold and warm air masses are obviously different, and the pressure on both sides of the front is very different. At the center of low pressure, the isobar of the groove is obviously curved and the air pressure changes greatly. The two are consistent, so the front can only appear in the position of the trough of low pressure.