How to judge the high and low pressure center, wind direction and weather according to the isobar distribution map? Only the latitude value is shown in the figure. Is the high-pressure center crowded

How to judge the high and low pressure center, wind direction and weather according to the isobar distribution map? Only the latitude value is shown in the figure. Is the high-pressure center crowded with isobars? High and low pressure center: The denser the isobar, the greater the pressure gradient force and the greater the wind force, just like the denser the contour line, the steeper the slope. Judging whether it is a high pressure center depends on the numerical change of isobar. From the outside to the inside, the value of the high pressure center increases, similar to the peak in the contour line. On the contrary, it is a low pressure center, similar to a basin on the contour line.

Judging the law of wind direction: first make clear the high and low pressure, then determine the direction of pressure gradient force, and finally draw the deviant wind according to the northern and southern hemispheres. The wind direction near the ground is oblique to the isobar, and the wind direction of the college entrance examination is parallel to the isobar.

Weather: 1. The wind blowing from high latitude to low latitude: cold and dry. 2. Blowing from low latitude to high latitude: warm and humid. 3. When crossing the border at low pressure, it will rain; It is sunny when the high pressure crosses the border. 4. The low pressure center and trough control rainy weather, and the high pressure center and ridge control sunny weather.