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Iceland volcano may have caused Edinburgh sulphur dioxide spike

Readings from St Leonard’s Street in the city’s Southside two days after the explosion, which took place about 850 miles away on 29 May, found 1,161 micrograms of sulphur dioxide (SO2) per cubic metre of air.

By comparison, the reading for an average day is around 0.5 micrograms – about 2,300 times lower.

The Scottish Environment Protection Agency (Sepa) also recorded increased SO2 levels on the Isle of Lewis on 30 May.

UKCEH’s senior air pollution modeller, Dr Massimo Vieno, said any damage to the environment was likely to have been “minimal”.

He said: “This was an extremely unusual event that happened for a very short period of time.

“We basically had a large explosion in Iceland, which combined with exactly the right configuration of wind to bring the plume from the Reykjanes Peninsula to Scotland and to Edinburgh specifically.

“It is a very unique event”.


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