How long will the hot weather in Shaanxi last?

Two days ago, Xi 'an started the barbecue mode. According to meteorologists' prediction, the temperature in Xi will continue to be high this week. Although the weather station predicted a temperature of 40℃ on the 6th, it is likely to exceed 40℃. And remind the general public to prepare for heatstroke prevention and cooling.

Speaking of Xi, I remember traveling a few years ago, which was also summer. Although it is quite hot, the temperature is not so exaggerated this year. It can reach such a high temperature this time, and it will exceed 40℃ in two days.

In the past few years, Xi has experienced many extreme high temperatures. According to experts from the Meteorological Bureau of Xi Province, the highest temperature in Xi appeared on June 2 1 day, and the temperature reached 43.4℃. In recent decades, the high temperature weather in Xi 'an was in June 2006, and the highest temperature reached 42.9℃. According to the data in recent five years, the longest duration of high temperature weather is July 20 17, 22 days above 35℃ and 40℃ 10 days.

Xi 'an will continue to be popular this time, and the reasons can still be analyzed.

One thing is actually worth noting. As mentioned above, from the data of recent years, the high temperature days in Xi 'an in previous years generally appeared in the middle and late July. In fact, the temperature in Xi has started to rise since mid-June. The red high temperature warning was issued on June 16, and again on June 17.

I can't help it. It will be hot again in July. It is said that the highest temperature in Xi will last for more than 40 degrees in the future.

The first thing to say is the geographical environment of Xi 'an, that is, Guanzhong and Qinchuan in Shaanxi, which are 800 miles apart. Xi 'an is 400-700 meters above sea level. The Loess Plateau is in the north, the Qinling Mountains in the south and the Guanzhong Plain in the middle. Does it look like a basin? In fact, it is not conducive to air circulation. You can think of it as an aluminum basin, which has a good insulation effect. But this kind of terrain will gather heat, and the temperature will naturally be high.

Xi is affected by the western Pacific subtropical high, which has a great influence on China. It is located in the western Pacific Ocean in the northern hemisphere and exists all year round. It is stable and inactive, so Xi 'an is easily influenced by it. You must have seen the weather forecast. Every time the forecast says that the subtropical high controls the northern region, it means this. If the subtropical high controls an area for a long time, it is likely to cause high temperature weather.

Urban heat island is also a factor that cannot be ignored. I remember this is a knowledge point of junior high school geography, which is easy to understand. Cities are all reinforced concrete, and the temperature rises faster, so the temperature in the urban area is definitely higher than that in the surrounding suburbs. In summer, air conditioning is a necessity, but when the sun is "big" in summer, the wall temperature will inevitably rise, so air conditioning has become a necessity for everyone. Do you feel that every time you go to the outdoor unit of the air conditioner, you will blow out a hot air? Think about it, there are tens of thousands of air conditioners in use in a city. Can the temperature be low? This is the urban heat island effect.

What you said above is actually an objective reason. At this stage, we can't change. Various factors affecting the high temperature weather in Xi will not change obviously in a short time. It can be said that there will be fluctuations, so the high temperature in Xi 'an in summer continues.

Actually, there is another problem that my friend cares about. How is it comfortable to wear a mask on such a hot day?

N95 is not just needed.

N95 mask has good air tightness, but poor air permeability. Disposable medical masks can be effectively protected, and they are very light and thin. Everyone should wear disposable masks. I have been wearing a disposable medical mask, which is very convenient for ventilation.

Suitable fresh air

If you live in a crowded environment, you can take off your mask and breathe fresh air in a place where there are few people to rest. I often do this, especially where I need to wear a mask all the time. I really need to keep fresh air, or my mind will buzz.

Please change the wet mask.

Nowadays, many masks are made of meltblown cloth, which will protect too much water in urban areas. Therefore, if the face sweats too much, or the mask is wet with water, it is recommended to replace it in time.

In a word, Xi is already very hot, so we must pay special attention to avoid exposure. When you go out, you should take necessary sun protection measures and replenish water. The elderly, pregnant women, infants and patients with respiratory system, cardiovascular and cerebrovascular diseases should try not to go out at high temperature at noon.