Weather in Beijing on March 15

The occurrence of sandstorm has seriously affected people's health and travel. The sandstorm in Beijing this year has aroused widespread concern among netizens.

Sandstorm is a lingering shadow, and we still need to continue to work hard to care for the environment.

Someone is puzzled. After planting trees for so many years, why didn't they stop the sandstorm? Some people compare this sandstorm with the sandstorms that occurred in 2002 and 20 15, and think that it is the result of weak sandstorm intensity and vigorous environmental control. The sandstorm weather in Beijing is expected to gradually improve from the afternoon of March 15, and it will gradually disappear, which is expected to last only one or two days.

Where does the sandstorm appear? Why is it easy to produce in March? Is the occurrence of sandstorm related to human activities?

Meteorologists said that the sandstorm was caused by the rising temperature in the north since March, and higher meteorological conditions were conducive to the occurrence of sandstorms. Sandstorms from southern Mongolia have affected most parts of northern China. The occurrence of sandstorm has something to do with human activities, but it is not decisive. Natural conditions themselves are the decisive factors of sandstorms. Human activities only play a role in strengthening or weakening sandstorms. Modern sandstorm meteorological research shows that sand blowing and sandstorm weather generally need two conditions, one is strong and lasting wind, and the other is rich surface. Loose dry sand. Sandstorm is a special weather type, and its occurrence and change have their own laws. Its frequency and intensity are related to precipitation, temperature and weather system activities in spring.

What should I pay attention to when traveling in a sandstorm?

First, you must be prepared in advance when going out, adjust your clothes in time according to the climate and temperature changes, and wear dust-proof articles such as masks when traveling in sandstorm weather.

Second, the special person reminds the elderly, children and people with respiratory allergic diseases not to go outdoors as much as possible.

Third, the driver reminds us to pay attention to the road conditions, keep the distance between cars safe and slow down.