What is happiness in the haze and what does the haze bring us

Haze: also known as haze (haze) Dust, sulfuric acid, nitric acid, organic hydrocarbons and other particles in the air can also make the atmosphere turbid, blur the field of vision and lead to worsening visibility, if the horizontal visibility is less than 10,000 meters, the visual range obstruction caused by this aerosol system composed of non-aqueous matter is called haze (haze) or haze (dust-haze) The reason for the formation is: sulfur dioxide, nitrogen oxides and inhalable particulate matter are the main components of haze, the first two are gaseous pollutants, and finally Particulate matter is the culprit that worsens smog pollution.

They combine with the fog and make the sky gray in an instant. Particulate matter, abbreviated as PM, is monitored in Beijing for PM10, which is pollutant particles smaller than 10 microns in diameter. The particles themselves are both a pollutant and a carrier of toxic substances such as heavy metals and polycyclic aromatic hydrocarbons.

Toxic particulate matter in the city**: First of all, car exhaust. Large vehicles that use diesel fuel are "repeat offenders" of PM10 emissions, including large buses, shuttle buses of various units, and large transport trucks.

Although gasoline-powered small cars emit gaseous pollutants, such as nitrogen oxides, they can easily be converted into secondary particulate pollutants in foggy weather, aggravating smog. The second is the exhaust gas generated by burning coal for heating in the winter in the north. The third is the exhaust gas emitted by industrial production.

For example, industrial kilns and boilers in metallurgy, mechanical and electrical manufacturing, as well as a large number of exhaust gases emitted from combustion in automobile repair and painting and building materials production kilns. The fourth is dust from construction sites and road traffic.

It's just wearing a mask every day, that's what it means.

Low visibility, visibility range of less than 100 meters, resulting in numerous traffic accidents such as car accidents.

Inhalable particulate matter, haze is suspended in the air by the tiny particles of hunger in the exhaust gas emitted by industry, which is formed by the air becoming a gas volume glue, when the relative humidity is higher than 75%, these particles will condense with water vapor into liquid rot hidden droplets suspended in the air, acting as a condensation nucleus of water vapor, thus becoming fog, fog and haze can be converted into each other, most of these inhalable particles have harmful substances, or contaminated with microorganisms such as bacteria and viruses, so that people who inhale these particles suffer from respiratory infections and other diseases.

The foggy rush will affect the city's appearance, affect the mood, and even increase the crime rate.

Smog affects travel, and some factories are forced to shut down, slowing down production efficiency and affecting industrial production.

From the 10th day of 2013, when thick smog covered the central and eastern parts of China, the ** Meteorological Observatory upgraded the blue warning for heavy fog to yellow. Data from the environmental protection department show that there are varying degrees of pollution and severe pollution in the area covered by fog, from north to central China and even in the Huanghuai and Jiangnan regions.

The black shoes I brushed yesterday are gray today, imagine my lungs are also black? While expressing fear of pollution, netizens exclaimed, "It's time to reflect on the relationship between development and governance", and "It's impossible to solve the problem at the source!" ”

The widespread smog weather has also brought great difficulties to the travel of Chinese. On the Changsha-Xiangtan section of the Beijing-Hong Kong-Macao Expressway, more than 40 traffic accidents occurred in a row within 9 hours from 8 a.m. to 5 p.m. on the 13th; On the same day, near the Xianggui toll station of the Hengyang-Kunming Expressway in Quanzhou County, Guangxi, a 20-car rear-end collision accident also occurred, resulting in 1 death and 15 injuries.

Smog is closely related to the decline in air quality, which makes many urban residents in China frequently suffer from upper respiratory tract infections and respiratory allergies. In major hospitals in Beijing, Jinan, Shijiazhuang, Nanning and other cities, the number of patients in respiratory medicine and allergen testing departments has soared by 7 or 8 times in just a few days.

Zhu Tong, a professor at Peking University's School of Environmental Science and Engineering, said that although everyone has a different tolerance to pollution, in such severe pollution conditions, susceptible people and the elderly and children must take self-protection measures, do not go out, do not exercise vigorously, and do not open windows for ventilation.

The annoying smog has not gone away for a long time, and it is getting worse. Cities suffering from haze weather have urgently activated emergency plans, and environmental protection departments in Shijiazhuang, Baoding and other places have stepped up inspections of various indicators of soot emission enterprises. Wuhan and Zhengzhou began to take countermeasures, increasing the number of times sprinklers sprinkled water and dust, and began to study how to "replenish water" for urban areas that have been sunny and rainless for a long time.

Tianjin, Jinan and other places have also strictly investigated yellow label vehicles with high pollution emissions, and Zhengzhou City has banned 130,000 "yellow label cars" from the city's roads. There are many temporary coping measures in various places, which also reflect considerable humanistic care. But this is obviously not enough, in the dense fog we need to see the road under our feet, but also carefully sort out the road of ecological China.

Manic development has made many people, many enterprises, and many places regard beggar-thy-neighbor as an axiom, and do not pay attention to ecological morality at all, and haze has taught us a vivid lesson. Cite.

Smog is a danger to our health. There is also a boost to the sales of some masks. But ordinary masks can't filter it. I used the Hydra's own. **Relatively affordable. The breathability of the relationship is good.

Fog and Haze introduces the low-visibility weather phenomenon fog and haze that affect visual range obstacles, which focuses on the physical and chemical characteristics of fog and haze, as well as their causes and identification points, and also introduces the disasters caused by fog and haze, and gives typical examples and their corresponding **, forecast, pre-construction methods and disaster reduction emergency measures. "Fog and Haze" is rich and detailed, which can be used as a reference for relevant meteorological science and technology professionals, and is also suitable as an amateur reading material for graduate students, college students and other young people who love science and environmental protection.

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When you shoot, you shake, the focus is not aligned, and you can't see clearly.

1。Smog is transregional.

2。The health effects of smog are extremely bad.

3。Smog is a comprehensive problem that needs to be addressed systematically.

4。It is necessary to actively respond to smog.