Haze: Today refers to an atmospheric phenomenon. In ancient times, ancestors did not know this phenomenon, but thought it was a behemoth. It is a kind of monster like stork, rainbow and fog, which has the characteristics of "invisible and intangible". It is recorded in ancient books that the haze beast feeds on "earth, wood, bamboo and stone" and often appears at the same time as fog, so it is called "haze".
This word appears many times in Oracle Bone Inscriptions of Yin Ruins. The inventor of this word has a good sense of humor: a sly civet cat walks barefoot in the rustling rain with wide eyes.
Most Oracle inscriptions in Shang Dynasty were written by Oracle Bone Inscriptions, and Oracle Bone Inscriptions, who was related to haze, said: Haze is hard to blame. Haze is not good for people. We can only worship the wisdom of the ancients once here. In the Book of Songs, we can see how the ancients regarded smog as "the final wind smog", that is to say, strong winds reduced the rusticity in the air a lot.
Qu Yuan equated haze with burial in Chu Ci, which means hiding in the soil. Haze, a weather condition, was recorded as early as the official history. For example, it is recorded in Jin Zhi as follows: "Anyone who has fog and dust in the world has been in the tenth day, the fifth day, or January, or for a while, and the rain has no clothes and soil, which is called haze." It can be seen that haze has been described in detail in the Jin Dynasty.
Hazy weather:
Haze is a combination of fog and haze. Smog is very common in cities. In many areas of China, fog and haze are combined as disastrous weather phenomena for early warning and forecasting, which are collectively called "haze weather". Haze is the result of interaction between specific climatic conditions and human activities. The economic and social activities of high-density population will inevitably emit a large number of fine particles (PM2.5). Once the emission exceeds the atmospheric circulation capacity and carrying capacity, the concentration of fine particles will continue to accumulate. At this time, if it is affected by calm weather, it is easy to have a wide range of smog.
In 20 13, "smog" became the key word of the year. In June 5438+10, four smog processes enveloped 30 provinces (autonomous regions and municipalities). In Beijing, only five days are not foggy. It is reported that less than 65,438+0% of the 500 largest cities in China meet the air quality standards recommended by the World Health Organization. Meanwhile, among the 65,438+00 most polluted cities in the world, 7 are in China.
2014,6543814, the national disaster reduction office and the Ministry of civil affairs listed the haze weather that is harmful to health as a natural disaster for the first time in 20 13 years. February 20 14, the primary task to deal with smog pollution and improve air quality is to control PM2.5, and major measures should be taken from reducing coal burning, strictly controlling vehicles, adjusting industries, strengthening management, joint prevention and control, and managing according to law, focusing on key areas, strictly assessing indicators, strengthening environmental law enforcement and supervision, and earnestly investigating responsibilities.