What is the answer to Ant Manor on March 7, 2023?

The March 7, 2023 Ant Manor question is what kind of weather often occurs in spring in South my country? Answer: Back to Nantian.

Huinantian (referred to as Huinan) is the name for a weather phenomenon in southern China. It usually refers to the phenomenon that every spring, the temperature begins to warm up and the humidity rises sharply. When "Hui Nan Tian" appears, the air humidity is close to saturation and there is a wet scene everywhere.

Southern China has a typical subtropical monsoon climate. Therefore, from March to April every year, the warm and moist air blowing from the South China Sea meets the cold air moving south from Siberia, forming a quasi-stationary front in the south. , making the weather in the south unstable and very humid, with light rain or heavy fog during periods, resulting in the phenomenon of returning to the south. When the surface of some cold objects encounters warm and humid airflow, it begins to condense and form water droplets on the surface of the object.

The principle is as follows:

From a meteorological point of view, after a long period of low temperature, the surface and inside of the object are completely cold, and the temperature of the object is less than or equal to At the dew point temperature, the water vapor in the air reaches saturation and begins to condense on the surface of the object, causing water droplets to form and the phenomenon of returning to the south.

The so-called dew point temperature refers to the temperature when the air temperature drops to the point where the air reaches saturation under the condition that the water vapor content and air pressure in the air remain unchanged. The main reason is that after the cold air passes, the warm and moist airflow quickly counterattacks, causing the temperature to rise and the air humidity to increase. When the surface of some cold objects encounters the warm and moist airflow, it is easy to produce water droplets.

Notes

Humid and foggy weather can easily cause the recurrence of rheumatism, joint pain, and muscle pain, so citizens with these diseases need to keep warm. Patients with chronic diseases such as hypertension should take medications on time, monitor their blood pressure, and pay attention to preventing strokes and other diseases.

In addition, the "late spring cold" weather can easily cause upper respiratory tract infections, tonsillitis and other diseases, while humid weather is also the season when skin diseases such as eczema, chapped, dermatitis, and athlete's foot are common. Citizens should pay attention to prevention.