Montreal Protocol
What is the Montreal Protocol for?
An international treaty designed to protect the ozone layer by phasing out the production of numerous substances believed to be responsible for ozone depletion.
Some methods to prevent ozone depletion
Limit private vehicle driving
Use eco-friendly household cleaning products
Avoid using pesticides
Developing stringent regulations for rocket launches
Banning the use of dangerous nitrous oxide
How does the greenhouse effect work?
When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and some is absorbed and re-radiated by greenhouse gases.
What does a decrease in ozone cause?
An increase to the UV rays that reach the Earth's surface.
What does mitigation mean?
The action of reducing the severity of something
One reason this protocol was created
Chlorofluorocarbons are strictly man-made and were causing the ozone layer to deplete.
Where is the ozone in the atmosphere?
The stratosphere
What are greenhouse gases?
Greenhouse gases are the gases in the atmosphere that raise the surface temperature of planets such as the Earth.
Exposure to UV rays can cause
Cancer
Some methods to prevent ozone depletion
Limit private vehicle driving
Use eco-friendly household cleaning products
Avoid using pesticides
Developing stringent regulations for rocket launches
Banning the use of dangerous nitrous oxide
Some approaches of this treaty:
Production Control
Consumption Control
Trade, Import, export and reimport control ~ Adaptation to Ozone Friendly technology
Training and Capacity Building
Why is the ozone important?
It is important to the evolution of life on earth.
What is a benefit of the greenhouse effect?
The "greenhouse effect" helps to keep the Earth at a temperature that can support life.
How is stratospheric ozone expected to change in the coming decades?
It is expected to recover
Has the Montreal Protocol been successful in reducing ozone-depleting substances in the atmosphere? If so, how?
The Montreal Protocol is working.
There is clear evidence of a decrease in the atmospheric burden of ozone-depleting substances in the lower atmosphere and in the stratosphere;
Some early signs of the expected stratospheric ozone recovery are also evident.
When was this treaty opened
1987
What causes ozone depletion
The depletion of ozone is largely due to chlorofluorocarbons
What has the greatest impact on the greenhouse effect and why?
Carbon dioxide has the greatest overall impact on the greenhouse effect because of its concentration in the atmosphere.
Does depletion of the ozone layer increase ground-level ultraviolet radiation
Yes
What is a greenhouse gas that comes only from human sources?
Chlorofluorocarbons
Who created the Montreal Protocol
Mario Molina and his partner in research, Sherwood Rowland.
Is depletion of the ozone layer the principal cause of global climate change?
No
What other than occurring naturally increases concentrations of the greenhouse effect?
Anthropogenic activities.
What reactions cause ozone depletion?
When chlorine and bromine atoms come into contact with ozone in the stratosphere, they destroy ozone molecules.
What are some benefits of HFOs
Hydrofluorocarbons do not have those chlorine atoms attached to it.
There no chlorine to pop off pop off and to do that catalyst process that breaks down ozone into atmospheric oxygen.