Sentences with phrase «of ozone depleting chemicals»

The Montreal Protocol has universal membership and has phased - out 97 different chemicals responsible for ozone depletion, and is now phasing out the next class of ozone depleting chemicals HCFCs (hydrochloroflourocarbons) in the exact same industrial sectors that are currently using HFCs.

• The Montreal Protocol is hailed as the most successful multilateral environmental treaty having rid the world of 97 % of ozone depleting chemicals while providing extra time and technical and financial assistance to developing countries.

The Montreal Protocol has a proven track record for effectively providing financial support for the phase - out of ozone depleting chemicals through contributions and technology transfer.

An understanding of the variability of the ozone hole allows us to better quantify the impact of changing emissions of ozone depleting chemicals, to predict the future of the ozone hole, and to detect its recovery.

Here are some options: 1) The science of ozone depletion was clearer sooner than the science of climate change 2) The major producers of ozone depleting chemicals understood the science and knew that they did not want to face the liability for contributing to growing numbers of skin cancers.

- Volcans do not add much in the way of ozone depleting chemicals into the stratosphere.

- Volcans do not add much in the way of ozone depleting chemicals into the stratosphere.

Not exact matches

The United Nations Environment Programme» has developed a useful database called the «Inventory of Trade Names of Chemical Products Containing Ozone Depleting Substances and their Alternatives».

«Ozone recovery may be delayed by unregulated chemicals: Recent increases in an unregulated ozone - depleting substance, could delay recovery of Antarctic ozone levels by 5 - 30 years, depending on emissions scenarios.&rOzone recovery may be delayed by unregulated chemicals: Recent increases in an unregulated ozone - depleting substance, could delay recovery of Antarctic ozone levels by 5 - 30 years, depending on emissions scenarios.&rozone - depleting substance, could delay recovery of Antarctic ozone levels by 5 - 30 years, depending on emissions scenarios.&rozone levels by 5 - 30 years, depending on emissions scenarios.»

Study lead author Dr Ryan Hossaini, from the Lancaster Environment Centre at Lancaster University, said: «Dichloromethane is a human - made ozone - depleting chemical that has a range of industrial applications.

Next door, in the «Temporary Atmospheric Watch Observatory,» or «TAWO,» the National Oceanic and Atmospheric Administration tracks the level of greenhouse gases and ozone - depleting chemicals in the atmosphere.

To determine whether declining pollutants deserve credit for the recovery, the researchers used a 3D atmospheric model to separate the effects of the chemicals from those of weather, which can affect ozone loss through winds and temperature, and volcanic eruptions, which deplete ozone by pumping sulfate particles into the upper atmosphere.

They routinely monitor around 50 ozone - depleting chemicals in the atmosphere, some of which are now in decline as a direct consequence of the Montreal Protocol.

Emissions of ozone - depleting chemicals in places like China are especially damaging because of cold - air surges in East Asia that can quickly carry industrial pollution into the tropics.

As Secretary of State under President Ronald Reagan, George Shultz helped negotiate the most successful global environmental treaty to date: the Montreal Protocol, which phased out the use of chlorofluorocarbons and other ozone - depleting chemicals.

HFCs are chemicals that can be thousands of times as climate - forcing as carbon dioxide and that proliferated largely because the protocol tapped them as an alternative to ozone - depleting coolants.

British environment ministers are getting ready to plead the case for continuing to use some of the ozone - depleting chemicals that are being phased out under the Montreal Protocol.

Firefighters have called on the world's users of halons not to destroy the ozone - depleting chemicals — or worse, release them into the air — as old fire - extinguishing systems are junked.

The model is supported by observations from satellites, ground - based networks that measure ozone - depleting chemicals in the real world, and by observations from two decades of NASA aircraft field campaigns, including the most recent Airborne Tropical Tropopause Experiment (ATTREX) in 2013 and the Atmospheric Tomography (ATom) global atmospheric survey, which has made three deployments since 2016.

Some air conditioners still use chemicals that deplete the ozone layer and demand for air - conditioners is expected to rise as a result of global warming, so green buildings could help counter this demand.

Scientists at NASA, the National Oceanic and Atmospheric Administration, as well as other international agencies constantly monitor the stratospheric ozone layer and the levels of ozone - depleting chemicals at Earth's surface.

``... While [ozone depleting substance] ODS levels remain high, a large stratospheric sulfuric aerosol enhancement due to a major volcanic eruption or geoengineering activities would result in a substantial chemical depletion of ozone over much of the globe.»

Despite efforts to clean up the stratosphere of ozone - depleting chemicals, this year's ozone hole minimum bottomed out at the fourth lowest on record.

In his book «The Way Things Ought To Be» (1993) Limbaugh stretched the facts still further: «Mount Pinatubo in the Philippines spewed forth more than a thousand times the amount of ozone - depleting chemical in one eruption than all the fluorocarbons manufactured by wicked, diabolical, and insensitive corporations in history.»

The banning of ozone - depleting chemicals hasn't yet caused detectable improvements in the Antarctic ozone hole.

Joining Crichton on climate change issues was William Gray of hurricane forecasting fame, Richard Benedick (a negotiator on the Montreal Protocol on ozone - depleting chemicals), and David Sandalow (Brookings Institution).

Creating a new energy infrastructure is more comparable to the creation of the railroads, the inter-state highway system, personal computers, the Internet, and the space program than it is to installing catalytic converters, installing scrubbers, or phasing out ozone - depleting chemicals.

And we will phase out ozone - depleting chemicals without affecting any of our energy sources.

However, as a result of phasing - pout ozone depleting chemicals, HFCs were commercialized by the Montreal Protocol, which is why the Montreal Protocol has a duty to eliminate HFCs so that it will not have saved the ozone layer at the expense of the global climate.

For this reason, we consider here the effects on the stratosphere of not only emissions of ozone - depleting substances (ODSs), but also of emissions of greenhouse gases, natural phenomena (e.g., solar variability and volcanic eruptions), and chemical, radiative, and dynamical sratosphere / troposphere coupling

Worldwide bans on the worst ozone depleting chemicals has halted growth of ozone depletion, after years of worsening, and signs of recovery are expected to become statistically detectable in the next several years.

The movement of ozone - depleting chemicals through the atmosphere, shifting from the tropics and concentrating in Antarctica.

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.

This was in the wake of the Montreal Protocol, the global treaty on reducing and eliminating various chemicals (particularly, CFCs) which were thought to be ozone layer depleting.

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.

The stratospheric ozone layer has become substantially depleted throughout much of the globe since the 1980s because of enhanced human production and use of ozone - depleting chemicals, such as chlorofluorocarbons, halons, and others, during the 20th century.

We legislated marriage equity, pioneered universal health care, invented Greenpeace, and hosted the Montreal Protocol conference that led to the eventual banning of CFCs and other ozone - depleting chemicals.

This international Protocol and its subsequent revisions and amendments have resulted in a turnaround in the atmospheric abundance of most ozone - depleting chemicals.

While atmospheric levels of ozone - depleting chemicals were rapidly increasing before the Protocol was ratified, emissions of nearly all of these chemicals have declined substantially and atmospheric levels of most of these gases have decreased in the intervening 2 decades.

Atmospheric levels of ozone - depleting chemicals have reached their lowest levels since peaking in the 1990s, and the hole has begun to shrink.

Chemical processes on the surface of the cloud particles transform the initially harmless chemicals from chlorofluorocarbons (CFCs) into aggressive ozone - depleting substances.

The banning of ozone - depleting chemicals hasn't yet caused detectable improvements in the Antarctic ozone hole.

HFCs are a class of chemicals developed as industry looked for ways to reduce ozone - depleting substances in refrigerants and other applications.

For this reason, we consider here the effects on the stratosphere of not only emissions of ozone - depleting substances (ODSs), but also of emissions of greenhouse gases, natural phenomena (e.g., solar variability and volcanic eruptions), and chemical, radiative, and dynamical stratosphere / troposphere coupling

Leaking refrigerants are a major cause of climate change because they predominantly consist of two families of synthetic manmade chemicals called hydrochlorofluorocarbons (HCFCs)-- both ozone depleting substances and super greenhouse gases (GHGs)-- and hydrofluorocarbons (HFCs)-- powerful GHGs...

A divided three - judge panel of the court eviscerated the critical «Safe Alternatives» program that Congress adopted in the 1990 Clean Air Act to ensure the health and environmental safety of chemicals that replace chlorofluorocarbons (CFCs) and other ozone - depleting chemicals in air conditioning, refrigeration, and many other applications.

Although the Montreal Protocol eliminated the use of most gases which were damaging the ozone layer, its job is not done as hydrofluorocarbons (HFCs)-- the chemicals which have replaced ozone - depleting substances — are now destroying our climate.

Creating a new energy infrastructure is more comparable to the creation of the railroads, the interstate highway system, personal computers, the Internet, and the space program than it is to installing catalytic converters and scrubbers, or phasing out ozone - depleting chemicals.

The death has been announced of Sherwood Rowland - the US chemistry professor who first suspected that the Earth's protective ozone layer was being depleted by man - made chemicals.

HFCs are chemicals primarily used in refrigeration, air conditioning, and foam blowing, which were introduced to replace the ozone depleting chemicals phased - out by the Montreal Protocol, despite the fact that HFCs are extremely harmful to the climate with global warming potentials hundreds and thousands of times higher than carbon dioxide (CO2).