Is it useful to wear a mask in sandy weather?

Wearing a mask is useful in blowing sand weather.

Be sure to wear a mask when going out in sandy weather to reduce the damage caused by wind and sand. Since floating dust, respirable particles and fine particles will coexist in sandy weather, it is recommended to wear N95 or above protective masks.

In the absence of N95, medical protective masks are better than medical surgical masks, although the latter has a better protective effect against the new coronavirus. The reason is that the two types of products have their own standards and different requirements. The adsorption capacity and strength of melt-blown cloth for viruses and solid particles are different.

The filtration efficiency of protective masks for non-oily solid particles is more than 90%, and the filtration efficiency of medical surgical masks is more than 30%. It is generally not recommended for children to wear protective masks. It is recommended not to go out as much as possible and wear a surgical mask and eye protection.

Defense Guide: The government and relevant departments should do a good job in preventing strong winds in accordance with their responsibilities. Close doors and windows, reinforce hoardings, scaffoldings, billboards and other structures that are easily blown by the wind, properly place outdoor items that are easily affected by strong winds, and cover building materials. Pedestrians should be careful not to ride bicycles as much as possible, and do not stay under billboards, temporary structures, etc. when it is windy.

Causes of blowing sand weather

First of all, dust sources provide the material basis for sandstorms. At the same time, the dustiness in the north has a lot to do with its climate. In spring, the climate in the north is dry, with less vegetation coverage, weak resistance to wind erosion, and relatively little precipitation. The ground is dry and loose, and the soil surface is dry and loose. If there is a strong wind, a large amount of sand and dust in the loose soil will be swept into it. In the air, dust weather forms.

Especially in the southern Xinjiang Basin, central and western Inner Mongolia, and central and northern Gansu, the average number of sandstorm days per year can reach more than 10 days. Furthermore, human factors are also the main reason for the increasing number of sand and dust weather. As the population increases, population pressure increases, and people's excessive demands on nature lead to the continuous expansion of desertified land areas and frequent sand and dust weather.