The following figure shows the ground weather map (in hectopascals) of 65438+ 10 at a certain time. Look at the map and answer this question. (1) At this time, the front type of control A is. simple

(1) cold front? Weather characteristics: precipitation, strong wind, cooling and other weather. ? Reasons: ① Warm air was forced to rise along the front, forming clouds and causing rainfall; ② The horizontal pressure gradient is large and the wind force is strong; (3) Affected by cold air, the temperature drops.

(2) cold wave? Crops suffered from freezing damage, which destroyed pastures and infrastructure.

(1) According to the topic, it is winter, the high pressure center is located in Mongolia-Siberia, and the cold air mass is powerful, so the front type that controls a place at this time is a cold front, and there are precipitation, strong wind, cooling and other weather when the cold front passes. (2) In this season, affected by the cold front, meteorological disasters such as cold wave are prone to occur, which may cause freezing damage to crops and damage to pasture and infrastructure.