Read "Sea Level Isobaric Map of a Place in the Northern Hemisphere" and complete the following requirements. (1) The weather system affecting place A is ______. Under the control of this system, A

(1) It can be judged from the distribution of isobaric lines in the figure that the weather system at A is an anticyclone. Under the control of this system, the weather at A is characterized by clear weather; the weather system at B is a cyclone. Under the control of this system, the weather at B is characterized by rainy weather.

(2) According to the relevant knowledge of frontal cyclones, point C is located in front of the cold front and will be affected by the cold front weather. When the cold front passes, strong winds, cooling, and rainy weather will occur in this area; after the weather system passes, , the temperature drops, the air pressure rises, and the weather turns sunny.

(3) Site C is located in front of the cold front and behind the warm front, and is controlled by a single warm air mass.

(4) Specifically, the wind direction flows from high pressure to low pressure, and the northern hemisphere deflects to the right. The wind direction at G in the picture is northwest.

So the answer is:

(1) Anticyclone sunny, cyclone rainy

(2) C? Cold front? Strong winds, cooling rain and snow? The temperature drops and the air pressure rises High, the weather has turned sunny

(3) Warm?

(4) Northwest wind