The six-month event released 11 million tons of sulphur dioxide that spread over the country and the Atlantic Ocean towards Europe, says Sara Barsotti from the Icelandic Meteorological Office.
Based on data from a network of remote sensing and in-situ instruments established shortly after the event began, Dr Barsotti and her colleagues have been assessing how much gas was vented during the eruption.
The team also estimated just over 6.5 million tons of carbon dioxide was released, together with roughly 110,000 tons hydrogen chloride.
Fortunately, the health and environmental impacts appear to have been limited. There was a spike in complaints about asthma, bronchitis and bronchiolitis, but nothing substantially out of the ordinary.
http://www.bbc.co.uk/news/science-environment-32321005
Thanks to J.H. Walker for this link
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