In the map reading, P 1, P2 and P3 represent three isolines with different values, and the arrow indicates the wind direction at point A, fulfilling the following requirements: (1) This weather system

In the map reading, P 1, P2 and P3 represent three isolines with different values, and the arrow indicates the wind direction at point A, fulfilling the following requirements: (1) This weather system is located in the south. The wind direction of (1)A is from high pressure to low pressure, and it deflects to the right to the northern hemisphere.

(2) Ground B is controlled by low pressure, and the airflow rises vertically, which is easy to condense clouds and cause rain, and the temperature difference between day and night is small, so the weather system belongs to cyclone.

(3) Specifically, the wind direction is from high pressure to low pressure, and the northern hemisphere is deflected to the right, with northerly winds at point C and southerly winds at point D. 。

(4) In the horizontal direction of the cyclone in the northern hemisphere, the airflow flows counterclockwise from the periphery to the center, and the second place is in front of the cold front, which is about to be affected by the cold front. After the cold front, the weather is fine. The weather related to cold front includes heavy rain in summer, cold wave in winter and sandstorm in the north. Dingdi is located in front of the warm front and will be affected by the warm front. After crossing the border, the temperature rose, the air pressure dropped and the weather turned fine. The second place is about to be affected by cold front weather, and the heating mass will be forced to rise. There will be precipitation before and after the warm front, and the main rain areas appear in four areas: A, B, C and D.

So the answer is:

(1) north?

(2) low? How heavy is the rain? Microcyclone

(3)

(4) The cold front temperature drops, the air pressure rises, and the weather clears up. Is it a rainstorm in summer in the north? Warm? The temperature rises, the air pressure drops, and the weather clears up? b？ A and D.