Sentences with phrase «as ozone depletion»

So says a new study published in Science, in which a team of climatologists, led by Columbia University's Seok - Woo Son, found that as ozone depletion reverses in the Southern Hemisphere, the stratosphere will begin to rapidly warm up.

Thus it is possible that any alteration of the atmosphere such as ozone depletion, will alter the climate's sensitivity to CO2 doubling.

The temperature trends in Antarctica depend on the time interval and season one looks at, because certain forcings, such as ozone depletion, are particularly important over restricted past time intervals and during particular seasons.

How will environmental changes such as ozone depletion and global warming affect human health?

Not exact matches

Since 1,700 top scientists issued a dramatic warning 25 years ago about humanity pushing the Earth beyond its capacity to sustain life as we know it, we've managed to stabilize one of the things that was worrying them: the depletion of the ozone layer.

There is also growing understanding of the links between atmospheric problems such as local air pollution, acid rain, global climate change and stratospheric ozone depletion.

Long - lived chlorine species, such as chlorofluorocarbons (CFCs), led to depletion of the stratospheric ozone layer in the 1980s, most drastically seen in the Antarctic.

The researchers found that while the amount of ozone depletion arising from VSLS in the atmosphere today is small compared to that caused by longer - lived gases, such as CFCs, VSLS - driven ozone depletion was found to be almost four times more efficient at influencing climate.

The Arctic stratosphere in winter / spring 2011 was particularly cold, which led to large ozone depletion as expected under these conditions.

«Ozone depletion is a well - known phenomenon and, thanks to the success of the Montreal Protocol, is widely perceived as a problem solved,» says University of East Anglia's David Oram.

An extensive body of prior research has revealed students have many misconceptions about climate change, confusing it, for example, with causing acid rain and ozone depletion, as well as linking it to skin cancer, the authors note.

Several explanations for this widening have been proposed, such as radiative forcing due to greenhouse gas increase and stratospheric ozone depletion.

Beyond basic subjects such as climate and weather, this site from the U.K. Department of Environment, Food & Rural Affairs covers a wide range of pressing atmospheric science issues including acid rain, air quality, climate change, global warming and ozone depletion.

Measurements have shown that ozone depletion starts each year in late August, as Antarctica emerges from its dark winter, and the hole is fully formed by early October.

Watson said his team still needs to determine which substances would work best at reflecting light, how much is needed to have an effect, and the possible unintended consequences of injecting the particles into the atmosphere, such as acid rain, ozone depletion or weather pattern disruption.

They analyzed ozone measurements taken from weather balloons and satellites, as well as satellite measurements of sulfur dioxide emitted by volcanoes, which can also enhance ozone depletion.

Global warming and ozone depletion are usually thought of as separate problems.

These compounds are relatively short - lived, however, so the scientists suggest that they react in the tropical atmosphere to form inorganic bromine containing compounds, such as bromine monoxide, which can eventually lead to ozone depletion.

These include methane, nitrous oxide («laughing gas»), halons, methyl bromide and chlorofluorocarbons (CFCs), which are notorious as «ozone killers» because they play a major role in ozone depletion in the polar regions.

In 1991, this depletion was as severe as in any year since the discovery of the ozone hole in the early 1980s, according to B. L. Johnson, T. Deshler and R. A. Thompson of the University of Wyoming, Laramie.

The device would have measured ozone concentration, gases involved in ozone depletion, and aerosols such as those from the eruption of Mount Pinatubo in the Philippines.

-- The Administrator may promulgate regulations to add to the list of class I and class II, group I, substances that may be destroyed for destruction offset credits, taking into account a candidate substance's carbon dioxide equivalent value, ozone depletion potential, prevalence in banks in the United States, and emission rates, as well as the need for additional cost containment under the class II, group II cap and the integrity of the class II, group II cap.

Our own sun impacts upon our magnetosphere and consequently our ozone layer depletion as well.

«The researchers also calculated the likely effect of remediation on the ozone layer, but found that ozone depletion would be short - lived and similar to that resulting from natural processes such as large solar storms and volcanic eruptions.»

Temperature during the winter as a whole have generally decreased over the past two decades, likely as a result of climate change, but the sensitivity of ozone loss to the exact timing of March warming events makes ozone depletion a much more variable quantity.

With climate change, as with ozone depletion, the human footprint on Earth is apparent.

As I noted in the introduction to this post, the SAM trend is partly explained by ozone depletion in the stratosphere, and the most clearly anomalous melt in the James Ross Island core occurs after the late 1970s, about the time the ozone hole appeared.

Our own sun impacts upon our magnetosphere and consequently our ozone layer depletion as well.

While it is true that changing stratospheric ozone levels do impact the planets radiative balance (and vica versa) it is a 2nd order issue and global warming and ozone depletion should be viewed as two separate issues.

As William points out, ozone depletion is levelling out since the Montreal Protocol, and so lower stratospheric cooling will start to attenuate, but then Milloy doesn't appear to think that ozone depletion was a real phenomena either.

The changes seen in the MSU 4 data (as even Roy Spencer has pointed out), are mainly due to ozone depletion (cooling) and volcanic eruptions (which warm the stratopshere because the extra aerosols absorb more heat locally).

I like how she describes the struggles of Snowman as he tries to survive on an earth that has returned to a «wild» state yet is beset by the continuing effects of global warming and ozone layer depletion.

I can remember reading studies that purported to show that higher UV radiation from ozone depletion was causing frogs to disappear, this despite the fact that the experiments amounted to the same increased UV exposure as relocating the frogs about 50 miles south would have.

«The researchers also calculated the likely effect of remediation on the ozone layer, but found that ozone depletion would be short - lived and similar to that resulting from natural processes such as large solar storms and volcanic eruptions.»

Being observant about degradation caused by anti-environmental impacts such as CO2 buildup and ozone depletion and degradation of the oceans including CO2 buildup and depleted forested areas such as Brazil might be an Inconvenient Truth, but revealing it and tracking it and wondering about the relationship to «normal» is noteworthy and significant.

As for longer trends, there are of course other factors that could play a role, but you perhaps don't realise that the association of the trends over the last few decades with human forcings (which include other GHGs, aerosols, land use, ozone depletion etc.) are not just based on a correlations.

There is no firm evidence as yet for a long - term depletion of global ozone.

As things stand, scientists expect the first signs of recovery of springtime ozone depletion in the polar stratosphere around the year 2065.

In his World Day of Peace Message in 1990, St. Pope John Paul II said, «The gradual depletion of the ozone layer and the related «greenhouse effect» has now reached crisis proportions as a consequence of industrial growth, massive urban concentrations and vastly increased energy needs.»

The connection does not come as a surprise — the depletion of stratospheric ozone in the Antarctic is already thought to influence the Southern Hemisphere tropospheric climate.

Quite frankly, the various arguments on consensus (and denial thereof by the pseudoskeptics) are equivalent to discussing the number of angels who can dance on a pin, given that by any measure the scientific consensus on AGW is as high as that on ozone depletion by CFCs, acid rain, or the dangers of smoking tobacco, in all of which we found the consensus sufficient to act.

My understanding is that experimental data, (as opposed to made - up hypothetical data), shows that the supposed mechanism for CFC caused ozone depletion is at least incomplete.

A global protocol, the Montreal Protocol, came in to force in 1987 which sought to prohibit the use of halocarbon compounds as a measure to limit stratospheric ozone depletion.

As of this writing, there is observational and modeling evidence that: 1) both annular modes are sensitive to month - to - month and year - to - year variability in the stratospheric flow (see section on Stratosphere / troposphere coupling, below); 2) both annular modes have exhibited long term trends which may reflect the impact of stratospheric ozone depletion and / or increased greenhouse gases (see section on Climate Change, below); and 3) the NAM responds to changes in the distribution of sea - ice over the North Atlantic sector.

-- The Administrator may promulgate regulations to add to the list of class I and class II, group I, substances that may be destroyed for destruction offset credits, taking into account a candidate substance's carbon dioxide equivalent value, ozone depletion potential, prevalence in banks in the United States, and emission rates, as well as the need for additional cost containment under the class II, group II cap and the integrity of the class II, group II cap.

As part of my degree, I completed a project on changes in surface ultraviolet radiation and ozone depletion over Melbourne.

«Despite the low solar elevations in Antarctica, UV - B radiation doses in late spring during the ozone hole period can be sufficient to induce sunburn, and are about twice as great as those that would have occurred prior to the onset of ozone depletion.

States that several interlinked processes have been suggested as contributing to the warming, including stratospheric ozone depletion, local sea - ice loss, an increase in westerly winds, and changes in the strength and location of low — high - latitude atmospheric teleconnections

As a result of the discovery of ozone depletion and the scientific advances that delineated its causes, efforts to reduce the production, and ultimately the atmospheric concentrations, of ozone - depleting chemicals were begun in the late 1980s through the ratification of the Montreal Protocol on Substances that Deplete the Ozone Layer by many countries across the gozone depletion and the scientific advances that delineated its causes, efforts to reduce the production, and ultimately the atmospheric concentrations, of ozone - depleting chemicals were begun in the late 1980s through the ratification of the Montreal Protocol on Substances that Deplete the Ozone Layer by many countries across the gozone - depleting chemicals were begun in the late 1980s through the ratification of the Montreal Protocol on Substances that Deplete the Ozone Layer by many countries across the gOzone Layer by many countries across the globe.

NOAA's role as a steward of the atmospheric environment has enabled it to play a central role in enhancing our understanding of the ozone layer and ozone layer depletion, and in gauging the effectiveness of measures taken to restore the ozone layer to its original strength.