The ozone hole area over Antarctica is the smallest since 1990 Japan Meteorological Agency November 24, 4:58
An analysis by the Japan Meteorological Agency revealed that the area of the “Ozone Hall” over Antarctica was the smallest since 1990. The main factor is the occurrence of a special meteorological phenomenon in which the temperature in the sky suddenly rises. The concentration of chlorofluorocarbons and other substances is still high, and it is necessary to continue efforts.
“Ozone hole” is a phenomenon in which the ozone layer that absorbs harmful ultraviolet rays is destroyed by chlorofluorocarbon gas, etc., and extremely decreases over the South Pole. It occurs around August every year and disappears around December.
As a result of the analysis by the Japan Meteorological Agency based on the observation data of the satellite, the area of the "Ozone hole" is 11 million square kilometers at the maximum, less than half of last year, and a large ozone hole was observed in 1990 Since then, it has become the smallest.
Regarding the main factor, the Japan Meteorological Agency said that at the end of August when the “Ozone Hall” expanded, the temperature suddenly increased in the stratosphere over Antarctica, and it was difficult to produce substances that would destroy the ozone layer.
According to the Japan Meteorological Agency, “the main factor is the special weather conditions that do not occur much in normal years, and the concentration of chlorofluorocarbons is still high. It is necessary to continue efforts to protect the ozone layer”.