Sentences with phrase «ozone hole size»

Until then, annual measures of peak ozone hole size should be taken with a grain of salt, the researchers said.

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.

Not exact matches

Weather balloon measurements and other data showed that last September, the ozone hole was 4 million square kilometers smaller than its peak size.

The team did observe an important outlier in the trend: In 2015, the ozone hole reached a record size, despite the fact that atmospheric chlorine continued to drop.

The researchers found that the ozone hole has declined compared to its peak size in 2000, shrinking by more than 4 million square kilometers by 2015.

The large size of this year's ozone hole will likely result in increases of harmful ultraviolet rays at Earth's surface, particularly in Antarctica and the Southern Hemisphere in the coming months.

Tracking the ozone layer's recovery process is tricky because natural phenomena such as volcanic eruptions and weather variations can alter the size of the ozone hole.

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

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 ozone hole this year grew to a size of 10.9 million square miles, which is larger than the continent of North America.

Since then, scientists have observed seasonal fluctuations in the size of the ozone hole.

The ozone hole this year grew to a size of 10.9 million square

And it's much worse in Australia and New Zealand — thanks to a hole in the ozone layer the size of North America.

Their measurements, focusing on a time period in September each year — during which time the colder temperatures in the atmosphere promote the reactions that destroy ozone so that the hole is opening up — show that since 2000, the hole has shrunk by 1.7 million square miles, an area more than half the size of the continental United States.

This series of images shows the size and shape of the ozone hole each year from 1979 through 2017 (no data are available for 1995).

Records in depth and size haven't occurred during the same years (the largest ozone hole occurred in 2006), but the long - term trend in both characteristics is consistent: from 1980 through the early 1990s, the hole rapidly grew in size and depth.

It was determined that a major cause of changes in the size and extent of the Antarctic ozone hole are the intense wind patterns and circulations associated with the extensive Antarctic high - pressure zone and the surrounding wind pattern known as the Circumpolar Vortex.

The Antarctic hole would be 40 percent bigger than it is; the ozone layer over Europe and North America would be 10 percent thinner; the 2011 Arctic hole would have been Antarctic - sized; and we would be looking at about 2 million more cases of skin cancers by 2030, according to research conducted by Chipperfield and colleagues.

Over the long term, the size of the ozone hole is governed by emissions of chlorine and bromine containing compounds, for example chlorofluorocarbons (CFCs), generated mostly by human activities.

These are large - scale waves, which travel through Earth's atmosphere similar to waves in the oceans (see «Why Does the Ozone Hole Vary in Size?»).

The average ozone levels were observed to fluctuate dramatically from one spring to the next, so that little could be said about the hole's average size.

Now scientists at MIT along with others have found that since 2000 the ozone hole has actually shrunk by an area half the size of the contiguous United States, although the process is also heavily affected by variables such as volcanic eruptions from year to year.

Interestingly, recent studies have shown that the size of the ozone hole affects the global temperature.

In 2015, the ozone hole reached a record size, but Solomon and her colleagues discovered that the spike in ozone depletion was due primarily to the eruption of the Chilean volcano Calbuco.

Rather, wind patterns are responsible for the varying size of the ozone hole.

The findings suggest that measuring the total size of the ozone hole says little about ozone depletion, and that it's misleading to use the hole's extent alone to measure environmental progress.

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It is applicable to 2015 data displaying a similar sized ozone hole.

Some of the work at CERN seemed to say that cosmic rays nucleate very small droplets that do not increase to cloud size... Anyway, some of us follow GCR for reason of climate amplifications and even Ozone hole development.

Since UV radiation creates ozone in the stratosphere, the oscillation in UV levels can affect the size of the ozone hole....»

The treaty was incorporated in Title VI of the Clean Air Act and has proven successful in reducing the size of the ozone hole according to a recent post by CCNF science columnist Dr. Mauri Pelto.

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