Very high concentrations of sulfur dioxide were measured at the eruption
site today. Peak values were up to almost 2600 micrograms per cubic
meter at Reyðarfjörður, which is by far the highest value ever recorded
in Iceland. Consequently, a warning was issued for the town of
Reyðarfjörður downwind, advising people to stay indoors as much as
possible, especially children and the elderly. Healthy adults should not
perform strenuous physical activities outdoors. The clouds of SO2
emitted by the Holohraun eruption may have been perceived by smell in
Norway yesterday and have reached as far away as Northern Siberia at
longitude 120 degrees East according to NASA surveillance. At times,
local concentrations of SO2 are so high that they force an involuntary, temporary evacuation of the scientists from the base camp at Vadalda.
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