Ozone hole moves to Hokkaido area 1999.11.15

A joint study between the National Institute of Environmental Studies and Nagoya University revealed that part of the ozone hole over the Arctic had been southward to the sky in the spring of 1996, in the Air balloon observation. The air flow around the Arctic is unstable, and it is often said that some of them may be torn apart and moved to the middle latitude area, but the ozone depletion has been numerically confirmed in the Japan sky. The possibility of such an ozone hole coming to the Japan is high in the future.