On June 4, 2011 the Cordón Caulle volcano complex in Chile erupted sending volcanic ash high into the atmosphere. A combination of small ash particles, which take a long time to fall to Earth, and the high winds of the jet stream has resulted in this ash plume being carried great distances to the east – crossing Argentina, the Atlantic, South Africa, Indian Ocean, Australia and New Zealand towards the Pacific Ocean.
Starting on June 5, the following image sequence, based on data from Meteosat-9, MTSAT-1R and GOES-11 satellites maps the spread of the ash cloud around the southern hemisphere. Bright red indicates the highest ash concentrations.
The Darwin Volcanic Ash Advisory Centre has an animated version of the sequence.