Avainsana: ozone hole
Posted in Yleinen
Record ozone hole over Arctic in March now closed: U.N
Ozone depletion over the Arctic hit a “record level” in March, the biggest since 2011, but the hole has now closed, the U.N. World Meteorological…
Posted in Yleinen
Antarctica’s ozone hole has company: A rare hole over the Arctic
The Antarctic ozone hole in the Southern Hemisphere is known for its yearly variations. This year, it has a counterpart. An ozone hole has developed…
Finnish site 
Global site