Read "Surface weather situation map at a certain time in some areas of my country (unit: hectopascal)" and answer the following questions. (1) At this time, place A is under ______ air pressure contr

Read "Surface weather situation map at a certain time in some areas of my country (unit: hectopascal)" and answer the following questions. (1) At this time, place A is under ______ air pressure control

(1) According to the distribution and values ??of the isobaric lines in the figure, it is not difficult to judge that location A is controlled by high pressure, and sunny weather often occurs under its control.

(2) The front exists on a low pressure trough, so only the dotted lines b and c will form a front. According to the horizontal movement direction of the cyclonic airflow in the Northern Hemisphere, it can be judged that the airflow at c flows from high latitudes to low latitudes (active airflow properties are cold)

It is a cold front; the airflow at b flows from low latitudes to high latitudes (active airflow properties) (for warmth) for warm front. According to the graph analysis, ② the ground isobars are the densest and the horizontal pressure gradient force is strong, so the wind force is also strong.

(3) A. The Northeast region is controlled by low pressure (cyclone) at this time, and rainy weather often occurs under its influence, so it does not meet the meaning of the question;

B. Combined with isobaric The line can be drawn and analyzed based on the wind direction diagonally crossing the isobars, pointing from high pressure to low pressure, and the geostrophic deflection force in the northern hemisphere deflecting to the right. The northeasterly wind blows in the Tarim Basin, so it does not meet the meaning of the question;

C. The eastern part of the Inner Mongolia Plateau is controlled by low pressure (cyclone) at this time, and rainy weather often occurs, so it is correct;

D. Combined with the isobars, the isobars can be crossed diagonally according to the wind direction, pointing from high pressure to low pressure. Draw and analyze the method of turning the steering force to the right. Southwest wind blows in the North China Plain, so it does not meet the meaning of the question.

Hence the selection: C

(4) In spring, the dry and cold air from the mainland still controls the northern region, and the cold air mass activities are frequent. According to the chart analysis, there is a cold front active in northwest my country and North China at this time. Under the influence of the cold front, disastrous weather such as cold waves and sandstorms often occur in the northwest and North China in spring.

So the answer is:

(1) Gao Qinglang

(2) c? ②

(3) C

(4) Cold wave sandstorm