Sentences with phrase «ozone hole over»

In 1985 we learned that the ozone hole over Antarctica was the size of North America, so it provoked a real sense of urgency.

One hypothesis links the strengthening of the west winds to the ozone hole over Antarctica.

As for the ozone hole over Antarctica, scientists have only recently started to quantify the impact of ozone depletion and recovery on the surface climate.

The same dynamics create the infamous ozone hole over Antarctica.

More than 20 years after the Montreal Protocol agreement limited human emissions of ozone - depleting substances, the question remains: Is the stratospheric ozone hole over Antarctica recovering?

As the Antarctic sea ice reached record levels, scientists floated several hypotheses, including possible changes in the ozone hole over Antarctica, or increased amounts of fresh water — which freezes more easily — on the surface of the ocean around Antarctica.

I got myself all in a lather over the ozone hole over Oregon (hey, give me some slack, being a redhead and all, ozone protects me from the Sun!)

My recent Times column argued that the alleged healing of the ozone layer is exaggerated, but so was the impact of the ozone hole over Antarctica:

Without the Montreal Protocol, the new study reveals that a very large ozone hole over the Arctic would have occurred during that cold winter and smaller Arctic ozone holes would have become a regular occurrence.

But of course the Ozone Hole over Kennebunkport remains a rallying call for the ideologues who still point to the protection of ozone as politicized science.

Stratospheric circulation slowly shifts the contours of the ozone hole over the course of the day (like winds shift the location of clouds).

The reason may have to do with the cold Antarctic atmosphere handling moisture differently than the atmosphere over warmer regions.Part of the reason that Antarctica has barely warmed has to do with the ozone hole over the continent.

BTW, the ozone hole over Antarctica is not getting any smaller, despite decreasing amount of chlorohydrocarbons.

As for # 11, «BTW, the ozone hole over Antarctica is not getting any smaller, despite decreasing amount of chlorohydrocarbons.

Without the Montreal Protocol, the new study reveals that a very large ozone hole over the Arctic would have occurred during that cold winter and smaller Arctic ozone holes would have become a regular occurrence.

Japan's Meteorological Agency announced last week that the ozone hole over Antarctica has increased 13-fold over the past 10 years, and now covers a total area of 17 million square kilometres.

They claim to have discovered an important process underlying the growing ozone hole over the southern hemisphere.

Ever since its discovery in 1985, the springtime ozone hole over Antarctica has been an insistent reminder of humankind's ability to cause environmental harm.

From Zürich, lead author Dr. William Ball says Earth's ozone shield against harmful radiation continues to weaken — despite an improvement of big ozone holes over the Poles.

From Zürich, lead author Dr. William Ball says Earth's ozone shield against harmful radiation continues to weaken — despite an improvement of big ozone holes over the Poles.

Not exact matches

First sighted over Antarctica in the mid-1980s, the so - called ozone hole led to an international ban on CFCs in 1987.

In October 1983, Farman discovered that a huge hole had opened up in the ozone layer over Antarctica — and that it was man - made.

Good news for fans of planet Earth: The seasonal hole in the ozone layer over Antarctica was at its second - smallest point in the past 20 years, according to new research from NASA and the National Oceanic and Atmospheric Administration (NOAA).

CFCs were banned from spray cans in the United States and Canada in the late 1970s, and the appearance of a «hole» in the ozone layer over Antarctica in the early 1980s created an international consensus that CFCs must go.

Similar scandals erupted over the effects of scores of industrial applications, ranging from sulfur dioxide and acid rain, to certain aerosols and the hole in the ozone layer, to leaded gas and cognitive impairment, to the granddaddy of them all, fossil fuels and global climate change.

The hole in the ozone layer over Antarctica, which allows harmful ultraviolet radiation to penetrate our atmosphere, is finally starting to heal.

Scientists are working to determine if the ozone hole trend over the last decade is a result of temperature increases or chorine declines.

An increase of stratospheric temperature over Antarctica would decrease the ozone hole's area.

If one takes into account that sulphur dioxide may also reach the stratosphere via the OH hole over the tropical West Pacific, it quickly becomes obvious that the atmospheric elevator over the South Seas not only boosts ozone depletion, but may influence the climate of the entire Earth.

The researchers suggest that the hole in the ozone layer over the Antarctic would have grown in size by an additional 40 % by 2013.

Scientists first detected the notorious «ozone hole» over the South Pole 14 years ago, the apparent result of chemical reactions caused by chlorofluorocarbons and other pollutants in the stratosphere.

For example, they say, injecting sulfate particles into the atmosphere would largely destroy the ozone layer over the Arctic and set back attempts to mend the «hole» that appears seasonally over the Antarctic.

The study, conducted with the help of Chilean health and veterinary authorities, appears to undermine local claims, repeated in the Western press over the past two years, that rabbits, sheep and other animals have been blinded by the ozone hole.

In 1985, a trio of British researchers noticed a hole in the ozone layer, our protection against harmful UV rays, over the Antarctic.

The whole country is aware that it is increased ultraviolet light caused by the hole in the ozone layer over Antarctica that makes the sun so vicious.

The study, led by Simone Tilmes of the National Center for Atmospheric Research (NCAR) in Boulder, Colo., warns that such an approach would delay the recovery of the Antarctic ozone hole by decades and cause significant ozone loss over the Arctic.»

The largest ozone hole ever seen has opened up over Antartica, a sign that ozone - depleting gases churned out years ago are just now coming to their peak, NASA scientists reported September 8, 2000.

The hole in the ozone layer over the Antarctic has expanded to near - record levels, scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA) said Thursday.

The hole in the ozone layer over Antarctica has expanded to near - record levels, scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA) said Thursday.

In the mid-1980s, scientists discovered that a seasonal hole was forming in the ozone layer over the South Pole.

GEOPHYSICAL RESEARCH LETTERS, doi: 10.1029 / 2011GL049784 Arctic winter 2010/2011 at the brink of an ozone hole ``... severe ozone depletion like in 2010/2011 or even worse could appear for cold Arctic winters over the next decades if the observed tendency for cold Arctic winters to become colder continues into the future....»

Another is almost certainly the infamous ozone hole that opened up over Antarctica in the 1980s, and which is still there.

Spa: The ESPA contains its own 17m ozone filtered pool, gym and Veranda Restaurant with views over the nine - hole golf course.

The optimism is based on the often forgotten environmental progress and victories that have been achieved over the past decades, including fixing the ozone hole, remediation of our rivers and lakes, great improvements in air quality and the rescue of many endangered species.

The recipe for massive springtime ozone loss in the polar regions, such as the annual ozone hole seen over Antarctica during the past two decades, is fairly simple.

There were early bans on CFC aerosol propellants and actions by environmentalists, together with the predictable opposition of vested interests; but the «tipping point» was the discovery by British Antarctic survey scientists of an «ozone hole» over Antartica in October 1984.

There is nothing «natural» about these extremes of weather over the last 2 years, or about the unprecedented ozone hole in the Arctic last year (troposphere warming from greenhouse gases caused stratospheric cooling to below threshold temperature for polar stratospheric cloud generation and ozone destruction).

We have gone through this before: the acid rain used to be a big problem, then the ozone hole took over and Freon is no longer used for refrigeration which costs you dearly, and now finally we have global warming to worry about.

And then I met Erik Conway, and Erik had made the link to what had happened over the ozone hole, and then we started doing research, started digging a little bit, found this link for Fred Seitz back to the tobacco industry, and that I remember very clearly because I remember that day, I called Erik on the phone and I said, «Erik, we need to write a book.»

In the Q&A, it came up that I had been attacked, and I mentioned the name of one particular person who was attacking me and after the talk, Erik came up to me and said, the person who is attacking you is the same person who attached Sherry Rowland over the scientific evidence of the ozone hole.