Isn t the morning air the freshest?

People tend to think that the morning air is the freshest, but this is actually a misconception. Whether the air is fresh or not depends on the severity of the air pollution. The main causes of air pollution are soot, exhaust gases emitted by various motor vehicles, smoke from residential stoves and carbon dioxide gases emitted by green plants at night.

According to scientists, the air pollution is very light in the morning, noon and afternoon throughout the day, so the air is relatively fresh and clean, of which the air is the freshest around 10 a.m. and 3 or 4 p.m.; Air pollution is worse in the morning, evening and evening, with the peak pollution at around 7 p.m. and 7 a.m., when the air is at its freshest. Hunan: 2162

The difference in the freshness of the air throughout the day is due to meteorological factors. When the ground temperature is higher than the upper-air temperature, the air on the ground is easy to rise, and the pollutants are easy to be carried to the upper altitude to diffuse. When the ground temperature is lower than the upper-air temperature, an "inversion layer" is formed in the sky, and this "inversion layer" is pressed against the ground like a big cover, so that the ground air cannot rise, and various pollutants in the air cannot diffuse. "Inversions" tend to occur at night, in the morning, and in the evening, so the air is at its most polluted during these times.

During the day, when the sun comes out, the ground temperature rises rapidly, and the "inversion layer" gradually dissipates. As a result, the contaminants spread very quickly. Generally after 10 a.m., the ground air is fresh.

Therefore, the morning workout time should be chosen after sunrise, preferably between 10 a.m. and 3 to 4 p.m., because the air is at its freshest at this time.

Many people think that the air is freshest in the morning of the day. On the contrary, the morning air is the least fresh of the day.

Let's start by looking at the weather changes at night: the temperature on the ground is slowly getting lower; In the second half of the night, the temperature on the ground dropped even lower. At this time, there is a clear contrast to the warmer temperatures at high altitude.

In this way, an inversion layer will appear above the ground. This "inversion layer" is like a big cover, covering the air, so that all kinds of dirt in the ground air cannot spread out to the sky. In addition, plants exhale carbon dioxide at night, which also increases air pollution.

Well, at six or seven o'clock in the morning, the air is at its least fresh. In addition, the "inversion layer" is most likely to occur in the evening. Therefore, the air at six or seven o'clock in the afternoon is also the least fresh.

The freshest time of the day is around 10 o'clock in the morning. Because, after the sun comes out, the temperature on the ground rises rapidly, and the cover (inversion layer) that is pressed in the air slowly disappears, and the dirt in the air gradually spreads out to the sky. So, at about ten o'clock, the air on the ground became fresh.

Many people believe that the morning air is the freshest of the day. On the contrary, air pollution is at its worst in the morning and evening, peaking at 7:00 a.m. and 7:00 p.m.

During the day, the air is fresher and cleaner at noon and afternoon, and the air pollution is heavier in the morning, evening and evening, with the peak pollution around 7 p.m. and 7 a.m. Generally after 10 a.m., the ground air is relatively fresh.

It should be at night, during the day green light and action release a lot of oxygen, and at night the breathing action absorbs oxygen, so the air should be good at night! ~

Some people say that the air is freshest in the morning, and some people say that the air is the best in the morning and that exercising in the morning is good for your health, but these statements are not true.

For human health, the quality of air depends on the amount of oxygen and other harmful gases in the air. The oxygen content is high, and the air is good if the content of harmful gases is low, and vice versa. Oxygen is mainly released by green plants using carbon dioxide and water for photosynthesis under light conditions.

During the day, the light is good, photosynthesis plays a major role, and plants produce more oxygen; In the evening, the photosynthesis of the plant stops, while respiration continues until morning. At this time, the carbon dioxide content in the garden and forest is high, and the oxygen content is low. So the air in the morning is not the best.

The air is best in the evening, when plants photosynthesize (release oxygen and absorb carbon dioxide) for a day, while plants respire at night (release carbon dioxide and absorb oxygen) and the air is worst in the morning.

Answer: I think the air quality is the freshest in the morning, from 4 to 6 o'clock in the morning. Because at this time, ordinary plants will release oxygen under photosynthesis, and there are few large vehicles on the road, and people are relatively scarce. So during this time period, the air quality is the freshest, and it is also the most suitable for people, come out to exercise, breathe fresh air, and physical health is the most important.

I think it's seven or eight o'clock in the morning. After the sun comes out in winter. The air has more oxygen ions and is the freshest.

It's like a pool of water that hasn't been stirred yet. As human activity intensifies, there is more soot, louder noise, and inhaled particles enter the lungs. I couldn't breathe, I couldn't cough, and it was very uncomfortable.

Exercising in the morning and evening, I don't think it's appropriate to exercise in the morning and afternoon. What time of the day is the freshest air, from early morning to about 6 o'clock in the morning, this time is the freshest air, exercise is in the morning, the air is the latest and good, if you want to be in good health, you have to get up early.

Hope the answer satisfies you.

The air in the morning is not the best! Around 9pm is when the air is at its best!

No, the plant breathed the air all night, and the worst thing was that it should be 5 o'clock in the evening and 6 o'clock in the evening.

The less pollutants the air has, the fresher the air will be. It is often believed that the noisy city is made by people during the day, and only the quiet park or riverside in the early morning brings people some comfort, when the air is freshest. However, this is not the case.

Scientists tell us that during the period between 7 p.m. and 7 a.m., the temperature at high altitude is often higher than that on the ground, forming a "temperature inversion layer" in the sky like a large quilt, covering our heads, and air pollutants are pressed inside, not easily diffused until the next morning. So the air is at its worst during this time. During the day, when the sun rises, the ground temperature rises rapidly, the air is easy to rise, the inversion layer will disappear, and the pollutants in the air will be carried to the high altitude by the rising air and quickly spread upward, and the air will become fresh. Report.

Air, sunlight and water are the three major elements of life. And fresh air is especially important for the elderly.

Whether the air is fresh and clean, and the number of negative ions contained in the air is a very important indicator. In terms of the number of negative ions per square centimeter, there are 40,500 general rooms, 100,400 streets and squares, 800,1000 thousand in the suburbs, 10,000 in recuperation areas, and more than 20 million in forests, valleys or near waterfalls. The higher the amount of negative ions in the air, the better.

In addition, whether the air is fresh or not also refers to whether the air is polluted or not. For example, factory exhaust gas, smoke and dust from ordinary chimneys, and colorless gases containing various odors emitted from chemical plants, pharmaceutical factories, and spice factories will pollute the air and bring harm to the human body.

The living environment of the elderly should be kept as fresh as possible.

People often think that the freshest air is sold in the morning, but this is actually a misconception. According to meteorological experts, the air is the freshest at 10 a.m. and 3-4 p.m. during the day, and the air is the least fresh at around 7 a.m. and 7 p.m.

The freshness of the air depends on meteorological factors. When the ground temperature is higher than the upper-air temperature, the surface air rises, and the pollutants are easily carried to the upper altitude to diffuse. When the ground temperature is lower than the temperature at high altitude, an inversion layer is formed in the sky, so that the ground air cannot rise, and various pollutants in the air cannot diffuse. Generally, around 7 a.m. and 7 p.m., inversion is prone to appear, and laughter in the air is the dirtiest at this time.

Generally, after 10 a.m., the ground temperature rises rapidly, the inversion layer will gradually dissipate, and the ground air will be very fresh. Therefore, at 10 a.m. and 3-4 p.m., the air is at its freshest.

100,000 why do you want to accompany Lu Pei early.

No, because after a night, the plants also do respiration in a dark-free environment! Absorbing oxygen, the envy of the empty sedan car in the early morning is not necessarily the latest to stop the fresh!

No, we all know that plants release carbon dioxide by respiration at night, and the sun intensity is low in the morning, and photosynthesis is like, so the rotation belt is around the time when the oxygen concentration of wax reeds is the highest.

The air is fresh in the morning after the sun comes out, and it is not fresh before it comes out, and the quality is the worst.

Modern science has proved that the air is not fresh in the morning, because the harmful substances in the air during the day are polluted seriously by settling overnight, and the air pressure is at the bottom, and people breathe polluted air, and when the sun rises, the sunlight makes the ground air rise and take away the dirt, so the air is the freshest when the sun rises in the morning.

The air in the morning is not fresh, and people often misunderstand that the morning air is fresh, but it is not! The freshest time of the air should be really in the evening, closer to the evening!

The morning air is the best, because in the morning the factories are not open, and people are still resting, and they can quietly feel the fragrance of grass.

The day is in the morning

Half an hour or so after the sun comes out, the air is at its best