The ozone layer acts like a shield in safeguarding the Earth by preventing the harmful ultraviolet radiations from entering into the atmosphere. Reported damage to the ozone layer in 1985 was a significant milestone in Antarctic science research. The research work played a significant role in generating international socio-political debate on this great environmental crisis.
The hole in the ozone layer, the earth's protective shield against ultraviolet rays, is expected to be smaller this year over the Antarctic than last, showing how a ban on harmful substances has st
This recent annual survey on weather and climate change by WMO provides evidence that 2011 had the highest global mean surface temperature levels in a La Niña year. Highlighting a number of climate extremes, it provides evidences of the major impacts of one of the strongest La Niña events of the past 60 years.
Chemical ozone destruction occurs over both polar regions in local winter–spring. In the Antarctic, essentially complete removal of lower-stratospheric ozone currently results in an ozone hole every year, whereas in the Arctic, ozone loss is highly variable and has until now been much more limited. Here we demonstrate that chemical ozone destruction over the Arctic in early 2011 was—for the first time in the observational record—comparable to that in the Antarctic ozone hole.
The observation of unusually low ozone levels over the Arctic last winter provides reassuring evidence that our knowledge of stratospheric chemistry is robust. Whether such an episode will happen again is an open question.
A huge hole that appeared in the Earth's protective ozone layer above the Arctic in 2011 was the largest recorded in the Northern Hemisphere, triggering worries the event could occur again and be e
London: Researchers in Australia have claimed that the hole in the ozone layer over Antarctica is on the road to recovery, 22 years after the Montreal Protocol to ban chlorofluorocarbons (CFCs) and related ozone-destroying chemicals came into force.
The team is the first to detect a recovery in baseline average springtime ozone levels in the region.
Shift in rainfall patterns across Southern Hemisphere The Antarctic ozone hole is about one-third to blame for Australia's recent series of droughts, say scientists. Writing in the journal Science, they conclude that the hole has shifted wind and rainfall patterns right across the Southern Hemisphere, even the tropics. Their climate models suggest the effect has been notably strong over Austr
