The district of Ust-Kamchatsky has been covered in ash by the eruption of the Shiveluch volcano in Russia, which has also led to warnings that it could affect aviation if there is further activity
he ash reached 20 kilometres high, the ash cloud moved westwards and there was a very strong fall of ash on nearby villages”.
However, the Kamchatka Volcanic Eruption Response Team reported that the plume reached only 8 kilometres above sea level.Sign up to newsletter If the plume reached 20 kilometres high, it may have penetrated the stratosphere, which could have consequences for the global climate. In the stratosphere, volcanic gases like sulphur dioxide can quickly condense to form sulphate aerosols, reflecting more of the sun’s radiation back into space and having a short-term cooling effect.
The 1991 eruption of Mount Pinatubo in the Philippines, for example, sent an ash cloud 19 kilometres into the atmosphere. It cooled Earth’s surface for three years following the eruption, by as much as 0.7°C at its peak impact,
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