The 59-foot meteor that crashed into Russia in February didn't just leave lasting damage to the surface of the earth, it left a cloud that lasted 3 months in the atmosphere. As CBS News notes on Aug. 20, this wasn't a small cloud; it contained "hundreds of tons" of material.
Also according to CBS News, “The explosion sent out a burst of energy 30 times greater than the atom bomb that leveled Hiroshima during World War II.”Following the sizable impact, a team from the NASA Goddard Space Flight Center used this opportunity to observe the newly created dust belt and to track the debris as it made its way into the atmosphere.
They discovered that this incredible amount of dust rose up into the atmosphere and began to travel around the northern hemisphere at different speeds. It was seen that heavier particles drop lower in the atmosphere, closer to earth, and move slower while lighter ones are able to stay higher and travel faster.
Only four days after the impact, the highest and fastest moving layer or debris and made it all the way around the hemisphere and was back at the site on impact in Russia. International Business Times notes that the amount of dust created by the meteor pales in comparison to the amount of dust created by volcanoes, but the significance lies in the fact that this is the first time scientists have been able to study the effects of meteoric dust. This could eventually lead to studies on how the dust affects the formation of clouds.