What is Haze Weather? What kind of weather is haze

In meteorology, a large amount of fine dust particles, smoke particles or salt particles suspended in the atmosphere make the air turbid, and the horizontal visibility is reduced to less than 10 km is called haze weather.

At present, China's Pearl River Delta, Yangtze River Delta, Beijing-Tianjin-Hebei and other regional air pollution is becoming increasingly prominent, and the number of haze days in Guangzhou, Shenzhen, Shanghai, Nanjing, Suzhou, Tianjin and other large cities has also increased compared with previous years.

The reason for the formation of haze weather is that during the period when the atmospheric circulation is relatively stable, the atmospheric stratification is stable, the air flow (wind speed) near the surface is very small, and the atmosphere will form an "inversion layer" that is warm at the top and cold at the bottom, coupled with the high humidity of the air near the surface and the accumulation of various pollutants, and the formation of haze weather.

Haze weather is usually accompanied by quiet winds, strong sunshine and low relative humidity. Severe haze weather invariably occurs in the case of strong temperature inversion in the boundary layer, which is like a pot lid that restricts the diffusion and dilution of substances in it. On the other hand, the development of urbanization and industrialization has caused changes in the properties of the underlying surface, which also changes the physical structure of the urban atmospheric boundary layer. In general, the reason for the occurrence of haze is because the urban diffusion conditions are not good, the cold air is not strong, the wind speed is not large, at this time the various pollutants in the city can not be diffused in time, and accumulate near the ground, if coupled with drought and little rain, strong sunshine, low humidity, pollutants are prone to various photochemical reactions, the formation of haze.

Haze is a weather with high humidity and low visibility.

Haze, also known as haze (haze), refers to the turbidity phenomenon formed by the suspension of a large number of particles, such as smoke and dust, for unknown reasons. The core substance of haze is dust particles suspended in the air, which are meteorologically called aerosol particles. In recent years, the frequency of "haze" weather phenomena has increased, resulting in a gradual deterioration of air quality.

Haze contains hundreds of atmospheric chemical particulate substances, which invade the human respiratory tract and lung lobes when people are unprepared, thus causing respiratory diseases, cardiovascular diseases, blood systems, reproductive systems and other diseases, such as pharyngitis, emphysema, asthma, rhinitis, bronchitis and other inflammations, long-term exposure to this environment will also induce lung cancer, myocardial ischemia and injury. Haze also often causes traffic accidents.

Haze", which means "buried".

The air was so muddy that it seemed to bury people.

Haze is very fine dust particles suspended in the air.

People use PM as the commonly used unit of length microns, to describe the concentration of dust in the air. (The word for dust is also a unit of measurement for length handed down from ancient times).

In daily life, people often use words such as fog, haze, and haze to describe weather conditions when the air humidity is high and visibility is low. However, fog, haze and haze are three words that denote weather phenomena with different meanings, and haze is a general term for fog and haze, which is a kind of severe weather warning and forecast.

It is also a weather condition that can endanger human health, indicating that there are too many small particles in the air, which are easy to enter our respiratory tract and cause diseases.