Are orange and snowfall in many European countries related to sandstorms?

Recently, strange "orange snowstorms" occurred in many European countries, and ski resorts in Russia and Ukraine were covered with orange snow. Some tourists described this scene as "the end of the world" and "landing on Mars". Scientists believe that the orange snow is a mixture of dust and pollen.

Some tourists recently went to Sochi Ski Resort in Russia, where the Winter Olympics was held in 20 14, and photographed the snow-capped mountain covered with "orange clothes", indicating that the originally snowy hillside became like a crescent-shaped sand dune, and some people described it as approaching Mars and the end of the world. Bulgaria, Ukraine and Romania have similar photos.

On March 24th, a hydrometeorologist arrived in Sochi for an investigation and thought that the wind brought sand from the Sahara desert, and then it landed on the snow. They expect the snow to return to normal in a few days. According to reports, there was an orange snow anomaly in Siberia in 2007, when scientists blamed it on a nearby sandstorm.

Sandstorm refers to the weather phenomenon that strong winds blow up dust on the ground, making the air very turbid and the horizontal visibility less than 1km. [2] Sandstorm is a weather phenomenon in wind erosion and desertification, and its formation is influenced by both natural factors and human activities. Natural factors include strong wind, decreased precipitation and its sand source. Human activity factor refers to the increase of sandstorm frequency after vegetation destruction in the process of economic development.

Sandstorm weather mainly occurs in winter and spring. This is because there is little precipitation in winter and spring in semi-arid and arid areas, the surface is extremely dry and loose, and the wind erosion resistance is very weak. When the wind blows, a lot of dust will be entrained in the air, forming sandstorm weather.