After the continuous cloudy, rainy and snowy weather last week, the citizens of Yueqing enjoyed a few days of sunny weather. However, with the rise in temperature and the baptism of rain, yesterday, there was heavy fog in Yueqing, and the whole city was shrouded in white. , so some citizens ridiculed that they felt that they were full of "fog" and "immortal spirit" when they went out that day, and many citizens were curious: "Is this fog or haze?"
The reply of Yueqing meteorological experts is: this time is fog, or thick fog! Generally speaking, the atmosphere is in a stable state, there is no strong cold air intrusion, the temperature difference between day and night is large, and the water vapor suspended in the atmosphere is saturated and condensed. foggy. At 8-9 on March 2, the minimum visibility in Yueqing was only 418 meters, with low visibility and high humidity. The air humidity at the urban site reached 80%.
It is reported that the difference between fog and haze is that the horizontal visibility of fog is less than 1000 meters, and the horizontal visibility of haze is less than 10 kilometers; fog requires certain water vapor and cooling conditions, while the formation of haze requires dry particulate matter in the air to reach a certain concentration, relative humidity Not much.
"I feel hazy when I go out early in the morning, and I can't see the way to work." Yesterday, many citizens sighed in the WeChat Moments. It continued until the afternoon and did not disperse. Meteorological experts said that with the arrival of a new wave of cold air, the fog will gradually dissipate and the air quality will gradually improve.
Yesterday, under the heavy fog, reporters could still see some people who love sports insisting on exercising in parks and gymnasiums. At about 13:30, the reporter checked the weather forecast with the mobile phone software and showed that the weather in Yueqing was cloudy, the temperature was between 12-8°C, and the air pollution index was 105, which was considered mild pollution. Is this air quality suitable for outdoor sports? In this regard, Yueqing outdoor sports expert Qian Xinhai suggested that if the air pollution is below mild, exercise should be reduced, and if it is above moderate, it should be stopped, especially for susceptible people.
"The goal of exercise and fitness is to improve lung capacity and promote heart function. People's lung capacity is much larger during exercise than when they are quiet. When foggy weather strikes, the harmful substances in the air increase. If you insist on exercising, the intake of harmful substances will be harmful. It is unscientific to persist in exercising at this cost.” Qian Xinhai told reporters that the air quality index is a scientific indicator to judge whether it is suitable for outdoor physical exercise, and citizens are preparing for outdoor physical exercise. Before exercising, you can check the air quality index, which can comprehensively reflect the pollution status of major air pollutants in the atmosphere, such as particulate matter, sulfur dioxide, nitrogen dioxide, carbon monoxide and ozone.
It is reported that the air pollution index is divided into excellent (0-50), good (51-100), mildly polluted (101-150), moderately polluted (151-200), heavily polluted (201-300) and severely polluted ( greater than 300) sixth gear. Corresponding to the six levels of air quality, the larger the index, the higher the level, indicating that the pollution is more serious and the impact on human health is more obvious.
Therefore, Qian Xinhai suggested that citizens can choose some indoor aerobic exercises, such as yoga, aerobics, swimming, etc., when the outdoor air quality is not suitable for physical exercise.
Some citizens also suggested that, in order to prevent harmful substances from being inhaled into the human body, is it okay to wear a mask for exercise? In this regard, Qian Xinhai believes that it does not matter if citizens choose a light exercise such as walking slowly, wearing a mask, but if they are climbing or running Wait, because the lung capacity is relatively large, wearing a mask may lead to poor ventilation and poor carbon dioxide discharge, which may cause symptoms of hypoxia in the body for a long time, thereby causing damage to the human body.
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Post time: Mar-04-2022