Ozone Hole Meteorology: 1984 Wind
The Antarctic continent is circled by a strong jet stream in the stratosphere (above 12 km or 39,000 ft). Looking down on the South Pole, this jet stream flows around Antarctica in a clockwise sense. This jet stream isolates air over Antarctica from air in the midlatitudes. The region poleward of this jet stream is called the Antarctic polar vortex. A stronger jet stream flow results in greater isolation of polar air from midlatitude air (less mixing). The air inside the Antarctic polar vortex is also much colder then midlatitude air.
Comparison to all years
The following figures show the daily progression through the ozone hole season, comparing the current year to the climatology of all other years.
-- click on a link for a PDF figure --