A 350-word essay on haze air pollution

Essay on haze

Haze is a combination of fog and haze. Due to the deterioration of air quality, haze weather phenomena have increased and the hazards have worsened.

Many areas in China incorporate the haze weather phenomenon into fog as a disastrous weather warning and forecast. Collectively

referred to as "haze weather".

Smog, as the name suggests, is fog and haze. But fog is fog, haze is haze, and there is a big difference between fog and haze.

Sulfur dioxide,

nitrogen oxides and respirable particulate matter are the main components of smog. The first two are gaseous pollutants

The last particulate matter is the main culprit that aggravates haze weather pollution. They combine with the fog

together,

making the sky instantly gray.

The English abbreviation of particulate matter is

pm,

Beijing monitors

pm2.5,

That is, pollutant particles with a diameter less than

10

microns. This kind of particle itself is both a pollutant and a carrier of toxic substances such as heavy metals and polycyclic aromatic hydrocarbons.

The sources of toxic particulate matter in cities: such as car exhaust; waste produced by burning coal for heating in the winter in the north; waste gas emitted by industrial production, etc.

With the deterioration of air quality, haze weather phenomena are increasing and the hazards are aggravating. Many areas in China incorporate haze weather phenomena into fog as disastrous weather warnings and forecasts. Collectively referred to as "haze weather". In fact

From a certain perspective, there is a big difference between fog and haze. For example: when fog occurs, the air is moist; when haze occurs, the air is relatively dry, and the relative humidity of the air is usually below 60%. The reason for its formation is that a large number of extremely fine dust particles, smoke particles, salt particles, etc. are evenly floating in the air, making the effective horizontal visibility less than

10km

The phenomenon of air mixing

erosion. The symbol is "∞". The diurnal changes in haze are generally not obvious. When there are no major changes in the air mass and the air mass is relatively stable, it will continue to appear for a long time, sometimes lasting more than

10

days. Weather phenomena such as haze, light fog, dust storms, blowing sand, floating dust, and smoke are all caused by a large number of very fine dust particles or smoke particles floating in the air. As a result, the effective horizontal visibility is less than

10km. Sometimes it is difficult for meteorological professionals to distinguish. It must be

comprehensively analyzed

in conjunction with factors such as weather background, sky conditions, air humidity, color and odor, and satellite monitoring to draw correct conclusions. Moreover, fog and haze weather Phenomenons can sometimes be converted into each other.

Haze is harmful to the human body when inhaled into the human respiratory tract, and severe cases of long-term inhalation can lead to death.

Of course,

We also need some self-protection in the face of this terrible natural weather.

Don’t open windows in hazy weather;

For example:

Wear a mask when going out; drink more platycodon tea; supplement vitamin D in an appropriate amount; eat a light diet and drink plenty of water, etc. These can

effectively protect against the invasion of haze.