Why is there smoke in Tianshan Mountain when it rains?
Fog is a weather phenomenon composed of tiny water droplets or ice crystals suspended in the air near the ground, and it is the product of condensation (or sublimation) of water vapor in the air near the ground. It is a liquid.
Mountain fog is mainly caused by the movement of high-altitude clouds (including the forced uplift of airflow along the slope) (high-altitude clouds are generally moving all the time), because the upper part of a mountain of one or two kilometers has often entered the bottom of low clouds (the cloud bottom is below 2500 meters). The author once climbed Lushan Mountain at an altitude of1164m in summer. I remember that the clouds have passed, and I have to turn on the indoor light to continue the meeting.
The time of the alpine fog season mainly depends on the cloudy season of this station (so the alpine fog season is the alpine cloud season), because the foggy season on the mountain is very consistent with the cloudy season. Specifically, it can be roughly divided into two regions: north and south.
The foggy season in the north is generally in summer, because summer is rainy season and there are many clouds in the sky; There are few clouds in other seasons. Take Mount Tai as an example. The foggy season in Mount Tai is from July to August, and the monthly average low cloud amount accounts for more than 50%, and the monthly foggy days are about 25 days. In winter, the monthly average low cloud cover only accounts for 1. 1%, and the foggy days only account for 10 days.
Extended data:
1, Travel: Stay indoors more: "It is best not to go out in foggy days, but to stay indoors." Sun Yongchang, chief physician of the Department of Respiratory Medicine of Beijing Tongren Hospital, said. In foggy days, there is no wind and the air is not circulating. Pollutants suspended in the air will take the opportunity to enter the human respiratory tract. Some people with chronic respiratory diseases will cause reactions, especially those with asthma, bronchitis and cor pulmonale, and they should pay more attention to the health problems in foggy days.
In addition, in foggy days, muscles are tense and easy to strain. Some people who have already suffered from lumbar muscle strain and neck muscle strain are prone to relapse, so they should avoid staying outdoors for too long.
2, skin care: clean the skin more: "When you go out in foggy days, you will be well protected, you will wear a mask, clean your skin immediately when you enter the room, and wash your face with gentle facial cleanser." Bai Yanping, chief physician of the Department of Dermatology and Sexology, China-Japan Hospital of the Ministry of Health, said. Bai Yanping said that pollutants in the air in foggy days have a great influence on the skin. So when you come back from outside, you must do a good job of cleaning.
In particular, some people who are prone to skin allergies should do a good job of cleaning to prevent diseases from invading from the skin.
Baidu encyclopedia-fog?
? People's Network-The fog is coming! Fog in autumn and winter is a "killer"