Affected by the subtropical high, since July, many provinces in China have experienced high temperature weather above 35 ° C, and the temperature in some areas has even reached 40 ° C. Therefore, a wave of rumors related to high-temperature weather also took the opportunity to "make trouble" -- beware of ozone bacteria in summer high temperature, the fish in Daming Lake leaped out of the water in hot and anoxic weather, the traffic lights in Jinan were sunburned... Heat returns to heat, but we can't let all "pots" be carried by high-temperature weather. Today, the reporter of science and Technology Daily will check the rumors in July one by one, to help you clear the fog and find the truth. Beware of ozone bacteria in summer high temperature? Truth: there is no ozone bacteria. This year, a new word appeared on the Internet - ozone bacteria. It is said that this summer, the weather around the country was unusually hot and the light was strong, which led to an increase in the number of ozone bacteria. If "infected" by ozone bacteria, it will cause heart disease, respiratory disease and other diseases. In order to prevent being "infected" by ozone bacteria, the public should try not to go out in high-temperature weather. Do not open doors and windows for ventilation between 9 am and 5 pm. In this regard, Feng Yinchang, director of the National Key Laboratory of environmental protection and urban particulate pollution prevention and control and professor of Nankai University, said in an interview with the reporter of science and Technology Daily that there is no so-called ozone bacteria. Therefore, the argument that "being 'infected' by ozone bacteria will cause heart disease, respiratory disease and other diseases" is also absurd. Ozone is an important trace component in the atmosphere and an allotrope of oxygen. "Most of the ozone is concentrated in the stratosphere 10 to 30 kilometers from the ground, and only about 10% of the ozone exists in the troposphere near the ground." Feng Yinchang said. Ozone in the stratosphere can absorb most of the solar ultraviolet radiation. It acts as a natural barrier to protect the earth's biosphere and protect animals and plants from harm. Therefore, ozone is also known as the "protective umbrella of the earth". However, ozone in the troposphere is a pollutant and an important greenhouse gas. According to the environmental air quality standard issued by China, if the maximum 8-hour average ozone concentration exceeds 160 micrograms per cubic meter, ozone pollution is formed. If it exceeds 215 micrograms per cubic meter, it constitutes moderate pollution. Ozone pollution can stimulate and damage human cardiovascular and mucosal tissues. Therefore, although we do not need to worry about unnecessary ozone bacteria, we have to prevent ozone pollution. "Volatile organic compounds (VOCs) and nitrogen oxides are the main precursors of ozone generation. These two types of pollutants will undergo a series of atmospheric photochemical reactions under high temperature and strong sunshine, resulting in ozone pollution. The sources of VOCs and nitrogen oxides are very wide, of which automobile tail gas is one of the important sources." Feng Yinchang suggested that people suffering from asthma, the elderly and children, can reduce going out at noon when the light is strong, and stay away from areas with dense traffic flow such as roads and viaducts. The fish in Daming Lake leapt out of the water in the heat and lack of oxygen? Truth: the fish may be abnormal because they are disturbed by the outside world. The legendary "carp leaping over the dragon's gate" has auspicious meaning, but it is rarely seen in life. Therefore, recently, a video of "a group of fish leaping out of the water after the rain in Daming Lake and jumping onto a boat" has become a hotspot on the Internet