Signs are now pointing to an imminent eruption of Bali’s Mount Agung.
Whether it’s hours away, or weeks, when that eruption finally comes it could trigger a cooling effect on the Earth.
Scientists expect such a cooling because it has happened before – and not all that long ago.
When Mount Agung last erupted in 1963, it spewed vast amounts of ash and sulphur dioxide into the atmosphere.
The sulphur dioxide then reacted with water vapor in the air to form a haze of sulphuric acid.
That haze lead to a drop in global atmospheric temperatures of 0.1-0.4 degrees Celsius, according to Richard Arculus, an Emeritus Professor in geology at the Australian National University.
That may not sound like much, but when you consider that global temperatures were only 5C cooler than now during the last ice age, you can understand the significance of such a decline.
Now imagine what would happen to global temperatures if several large volcanoes should begin erupting all at once.
Thanks to David Newton in Melbourne, Australia, for this info.