It shows clearly the annual “hole” that appears above the South Pole in the austral springtime (September/October), and which last year grew to about 23 million sq km (9 million sq miles) in its maximum extent.
The visualisation comes from a model run by Europe's Copernicus Atmosphere Monitoring Service.
It is based on the data from orbiting sensors, including those operated by Eumetsat - the pan-European organisation that gathers observations from space for use by national weather agencies.
