Antarctic Ozone Hole [in ”State of the Climate in 2019”]

[from the full abstract] Above Earth’s surface, the annual lower troposphere temperature was third highest to record high, and the lower stratosphere temperature was third lowest to record low, depending on the dataset analyzed. Middle- and upper-stratospheric temperatures were lowest on record since satellite records began in 1979. In September, Antarctica experienced a dramatic upper-atmosphere warming event that led to the smallest ozone hole since the early 1980s.