Transfer to the weather

The cold air in Shanxi is slack, the temperature rises steadily, and it is foggy and hazy. 65438+February 27, 2023 During the day, the sunshine continued, and warming up was still the main theme of the weather.

In the afternoon, the highest temperature in the whole province: -2 ~ 3℃ in the northern and south-central mountainous areas, and 4 ~ 8℃ in the rest of south-central areas. The light is good at noon, which is more suitable for outdoor activities and window ventilation. Temperature: In the next few days, the intensity of cold air will not be strong, and the temperature in Shanxi will rise steadily, but it will still be cold in the morning and evening. The public should also pay attention to keep warm when going out.

Fog or haze, due to the passive slack of cold air, the overall deviation of atmospheric diffusion conditions, fog and haze weather. Specific forecast: this afternoon to night: the whole province will be cloudy on sunny days, with light fog or mild haze in parts of central and southern China. Tomorrow from day to night: there is light fog or light to moderate haze in parts of central and southern China. The day after tomorrow to night: there are light fog or light to moderate haze in parts of the north and parts of central and southern China.

Fog or haze weather can easily lead to low visibility. Drivers and friends should pay attention to driving safety, and the public should take protective measures when going out to minimize outdoor activities. From the afternoon of the 30th, due to the influence of a new cold air, the atmospheric diffusion conditions improved, and the foggy and hazy weather in the above areas dissipated.

Rain and snow, affected by short wave trough, it is expected that there will be weak rain and snow weather in our province on 28-29. Specific forecast: Tomorrow, from day to night, it will be cloudy between sunny days in the north and middle, cloudy between sunny days in the south, and there will be sleet or light snow in parts of Yuncheng and Jincheng.

Day to night the day after tomorrow: sunny to cloudy in the north-central part, with showers of snow or light snow in some areas; It is cloudy in the south, with showers or sleet in some areas. Rain and snow weather is likely to cause problems such as slippery roads and reduced visibility. Please keep the distance between cars, slow down and pay attention to traffic safety.

The birthplace of cold air

The distant Arctic Ocean and cold Siberia are the cradles of cold air. The cold air originally came from the Arctic Ocean, and was later strengthened through Siberia. These areas have high latitude, long winter nights, short days and few sunshine hours. In the polar regions, there will even be extreme nights, and the sun never shows its face.

Therefore, the earth's heat from the sun is very weak; However, at night, the ground radiates a lot of heat into space. With the continuous cooling of the ground, the temperature of the atmosphere near the ground is getting lower and lower, and the accumulation of cold air will increase.

Guided by the northwest airflow, this cold air mass with extremely low temperature will push from north to south, affecting Mongolia, North China, East China or most parts of China.