Which season is more atmospheric pressure, winter or summer?

The air pressure has been changing. Under normal circumstances, the air pressure rises every morning and falls in the afternoon; The air pressure is the highest in winter and the lowest in summer. But sometimes, for example, when the cold wave affects, the air pressure will rise rapidly, and once the cold air passes, the air pressure will slowly drop. In summer, due to the high atmospheric temperature and low air density in the lower layer of the mainland, the atmospheric pressure decreases slowly with height, and the atmospheric pressure in the upper layer is relatively high. On the contrary, in winter, the lower atmosphere of the mainland is very cold and the air density is high, so the air pressure drops rapidly with height, and the air pressure in the upper air is relatively low. Therefore, from the ground to the height of 3000m, the month with the lowest air pressure has moved from July and August in summer to 1 and February in spring. The month with the highest air pressure has moved from 65438+ 10 in winter to 9 ~ 65438+ 10 in autumn, and even moved to August when the altitude is above 4500m. For example, the highest month in Bango, Tibet, was 574.3 hectopascals, which appeared in September, and the highest month in August and September in Golmud Tuotuo River was 587.4 hectopascals. The highest monthly price of Wudaoliang in Golmud is 583.0 hectopascals, which has been moved to August. The height of Mount Everest is also the highest in August. That is to say, at the height of 4 000 ~ 5 000 meters, the seasons of the highest and lowest months are just the opposite. The air pressure in winter and summer is also affected by cyclones and anticyclones, which are the flow of air and change the air pressure.