International Agreement To Limit Cfc Production In Sacramento
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The Montreal Protocol, finalized in 1987, is a global agreement to protect the stratospheric ozone layer by phasing out the production and consumption of ozone-depleting substances (ODS).
The 1985 Vienna Convention for the Protection of the Ozone Layer and the 1987 Montreal Protocol on Substances That Deplete the Ozone Layer do not directly address the issue of climate change. However, they do seek to phase out chlorofluorocarbons (CFCs) and halons, an important group of greenhouse gases.
The Montreal Protocol, finalized in 1987, is a global agreement to protect the stratospheric ozone layer by phasing out the production and consumption of ozone-depleting substances (ODS).
Under the original Montreal Protocol agreement (1987), developed countries were required to begin phasing out CFCs in 1993 and achieve a 20% reduction relative to 1986 consumption levels by 1994 and a 50% reduction by 1998.
After recognizing that the unregulated release of these ozone-depleting substances could eventually destroy the ozone layer, the international community adopted the Montreal Protocol in 1987 to phase out chemicals like chlorofluorocarbons (CFCs), which were commonly used in refrigerators, fire extinguishers, foams and ...
The Montreal Protocol on Substances that Deplete the Ozone Layer is the landmark multilateral environmental agreement that regulates the production and consumption of nearly 100 man-made chemicals referred to as ozone depleting substances (ODS).
Hydrofluoroolefins (HFOs): HFOs have very low GWPs due to their very short atmospheric lifetimes. Although there are low-level flammability (A2L) issues with HFOs, some are already SNAP approved.
The larger the GWP, the more that gas warms the Earth compared to CO2 over a time period. The period usually used for GWPs is 100 years. GWP thus provides a common unit of measure. So, among all the gases since GWP is compared to CO2; CO2 has the least GWP i.e. 1.
HFOs (Hydrofluoroolefins) typically have the lowest global warming potential among the listed options. HFOs are a new generation of refrigerants developed as alternatives to HFCs (Hydrofluorocarbons). They have significantly lower greenhouse gas emissions and are designed to have minimal impact on global warming.
HFOs and HCs have the lowest global warming potential. Recall that HFOs and HCs were developed after CFCs, HCFCs, and HFCs. They were developed to provide an alternative to the high global warming potential of HFCs. In this module, we discussed the characteristics of different types of refrigerants.