Intense fires burning in Russian peat bogs and forests have produced dense plumes of smoke stretching 3,000km (1,860 miles) across the country - equivalent to the distance from San Francisco to Chicago in the United States.

The images also show pyrocumulus cloud formed by intense heat pushing air into the atmosphere in a dense plume. The smoke has reached up to 12km into the stratosphere, where it is then able to travel long distances to affect air quality far away.