Two maddening weather: autumn tiger and late spring cold?

In some years, there will be a short-term hot weather after the beginning of autumn, usually between August and September. Han people call this weather change "autumn tiger", which is an abnormal weather phenomenon like "spring cold". Let's take a look today.

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Late spring cold is an abnormal weather, which generally means that the temperature rises rapidly in early spring, and after the weather turns warmer in spring, the temperature drops sharply due to the invasion of cold current. On the first day, the warm wind made the tourists drunk, but the next day it was chilly in spring. The winter clothes that have just been put away will appear again, which is worthy of unexpected chill.

In the early autumn of each year, people will never be blindly optimistic after beginning of autumn, because if they are not careful, the "autumn tiger" will jump out and come again in a few sultry sauna days. Autumn tiger is not docile at all. When it came, not only did the heat wave attack people, but it lasted for a long time. However, ten days and a half later, the tiger quietly left the scene, and the real autumn wind blew on my face.

Why is there a cold spring and autumn tiger in a year? Meteorologically speaking, during the spring equinox and solar terms, the trough in East Asia is obviously weakened, and the trough ridge activity in the westerly belt is obviously enhanced. From Mongolia to Northeast China, there is often low-pressure activity and cyclone development. Low-pressure movement leads to cold air going south and windy and windy weather in the north. When the long wave trough moves eastward, affected by the intersection of cold and warm air masses, there will be continuous rainy and cold weather in late spring.

The reason why autumn tiger weather appears is that the subtropical high retreating south once again controls Jianghuai and its nearby areas, resulting in more sunny days, strong solar radiation and the recurrence of hot weather, which makes people feel hot and uncomfortable, so it is called "autumn tiger".

Conclusion: During the autumn tiger period, many diseases related to dryness will occur frequently due to the decrease of moisture in the air. From the perspective of Chinese medicine, it is "autumn dryness". Therefore, both healthy people and patients with chronic diseases should replenish more water and eat more heatstroke prevention food at this time, but pay attention to adding clothes in the morning and evening to prevent colds.

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