Sentences with phrase «when ozone holes»

Understanding the mechanism of ozone depletion should help scientists predict when ozone holes will grow or shrink, he adds.

«I think people, myself included, had been too focused on October, because that's when the ozone hole is enormous, in its full glory,» Solomon says.

There was a «greater frequency of warts» reported to doctors during periods when the ozone hole was at its largest, but the researchers said «the significance of this finding is uncertain».

He warned Exxon not to be caught off guard, the way the aviation industry had been surprised by the threat to supersonic airplane development when the ozone hole was discovered.

Not exact matches

But when current growth leads to growing ozone holes, progressive global warming, the exhaustion of soils, and the disappearance of wetlands and fisheries, costs are being imposed on the future.

The ozone hole, depicted in red, begins forming every year in early September, when the spring sunlight ends Antarctica's long, dark winters.

Solomon and her colleagues believed they would get a clearer picture of chlorine's effects by looking earlier in the year, at ozone levels in September, when cold winter temperatures still prevail and the ozone hole is opening up.

The team found that the September ozone hole has shrunk by more than 4 million square kilometers — about half the area of the contiguous United States — since 2000, when ozone depletion was at its peak.

Its replacement is not due to come online until 2017, leaving a huge data gap at a time when the Arctic is warming faster than any other region and its ozone hole is approaching the size of the Antarctic's.

The Antarctic ozone hole forms every Southern Hemisphere spring, when chemical reactions involving chlorine and bromine break apart the oxygen atoms that make up ozone molecules.

I think that this was after 1987 when doubt concerning the causes of the Antarctic Ozone Hole were certainly politically motivated because 1 ppb of ClO measured in the polar vortex made scientific doubt insane.

Volcanic eruptions have episodically interfered with healing, particularly during 2015, when a record October ozone hole occurred after the Calbuco eruption.»

The Arctic and the Antarctic were both warming through the 1940's and I understand part of the formula for an increasing ozone hole size are very low temperatures which may have been missing when the researchers first looked.

When life on Earth ends, however, no one will know what caused it — the cause could have been ANY of the MANY environmental threats we were told were going to end life on Earth as we knew it, starting in the 1960s with DDT... then other pesticides, acid rain, hole in the ozone layer, global warming, global cooling, climate change, etc..

My main involvement with this subject came several years ago when I asked the Max Plank institute and Cambridge University if it were possible the ozone hole had always existed but we were unable to measure it prior to the invention of suitable instruments in the 1950's.

I've been reading lately about the ozone hole and the fact that it recently has been larger than when CFC's were allowed.

When we first discussed AGW data fraud he told me that the current situation was nowhere near as disturbing as during the ozone hole scare.

Fourth, there was a point in late 2006 and 2007 when there was some question about whether CFCs were causing the ozone hole.

When scientists discovered a huge and growing hole in the earth's ozone layer, Canadian researchers and bureaucrats were so central to the response that the ensuing global ban in the manufacture of ozone - depleting chemicals would be named the Montreal Protocol.

The UV [and Xrays] and ozone production will be down when we are looking into a dark coronal hole.

Three British scientists shocked the world when they revealed on May 16th, 1985 — 25 years ago — that aerosol chemicals, among other factors, had torn a hole in the ozone layer over the South Pole.

6 Ice age — time in the past when continental glaciers covered large parts of Earth's surface Global warming — a gradual increase in the temperature of Earth's atmosphere Greenhouse gas — Gases in the atmosphere, such as carbon dioxide, that trap solar energy Ozone hole — a large area of reduced ozone concentration in the stratosphere, found over Antarctica Chlorofluorocarbon — chlorine compounds that are the main cause of ozone depletion KEY Ozone hole — a large area of reduced ozone concentration in the stratosphere, found over Antarctica Chlorofluorocarbon — chlorine compounds that are the main cause of ozone depletion KEY ozone concentration in the stratosphere, found over Antarctica Chlorofluorocarbon — chlorine compounds that are the main cause of ozone depletion KEY ozone depletion KEY TERMS

When we bring our results together, an interesting picture emerges of the combined effect of greenhouse gases and the effects of the ozone hole on climate at the poles.

When we introduced an ozone hole into our model, the winds over the Southern Ocean grew faster.

In fact, when asked to name problems facing the nation, Americans would think of pollution of drinking water, the ozone hole, or the destruction of tropical forests ahead of global warming.

This attitude was nailed down in 1985 when a British group announced their discovery of a «hole» in the ozone layer over Antarctica.

The ozone holes grew when the Sun was active and are now shrinking with the less active Sun.

Repeating NASA's question, «Why are we seeing the worst - ever ozone hole when 13 years of regulation are finally bringing CFC levels under control?»

The general rule is that more solar energy gives more ozone so the ozone hole should shrink when the sun is more active and vice versa.

However we do observe the ozone hole growing when the sun is active and shrinking when the sun is less active which lends credence to the idea that we have been interfering with the natural processes with our CFCs