Interpretation of wind direction How to judge the wind direction of a place according to the isobar, and how to judge the cold and warm front on the isobar map?

High and low pressure center: The denser the isobar, the greater the pressure gradient force and the stronger 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 wind direction: first find out the high and low pressure, and then determine the direction of the pressure gradient force. 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 is cold and dry. 2. From low latitude to high latitude, it is warm and humid. It is rainy when the air pressure is low. 4. The low-pressure center and trough control rainy weather, and the high-pressure center and ridge control sunny weather.