Q
CFCs (Fridges and aerosols.) - 25%, but increasing due to ability to survive within the atmosphere for 100 years.
UQ
Q
" Aerosols are suspensions of tiny particles in the atmosphere, and have both anthropogenic (i.e., man-made) sources such as industrial processes and car emissions, and natural sources such as forest fires, volcanoes, and wave-breaking in the ocean. Aerosol particles affect Earth's climate, both individually and by serving as the nuclei around which cloud drops form, by influencing how much solar energy is absorbed by Earth (including the oceans, atmosphere, and land) or is reflected back into space. Collecting accurate data and achieving better understanding of the roles in which aerosols participate is thus crucial to understanding their effects on Earth's climate. Graphic courtesy of Pacific Northwest National Laboratory "
UQ
2 points:
1. For the combination CFC/Fridges:
Q
Global treaty signed to ban HFC refrigerants
Lloyd Alter (@lloydalter)
Business / Environmental Policy
October 17, 2016
https://www.treehugger.com/environmental-policy/global-treaty-signed-ban-hfc-refrigerants.html
The Chlorofluorocarbons (CFCs) were the cause of a giant hole in the ozone layer, which has been shrinking ever since. Unfortunately, the replacement chemicals, hydrofluorocarbons (HFCs) had their own major problem: they are a seriously bad greenhouse gas, far worse than Carbon Dioxide. (Christine explains here) Also in the period between the Montreal Protocol and today, the use of air conditioning has exploded in the developing world as the middle class grows, and in the developed world as it gets hotter.
...
But this past weekend an agreement was reached to reduce and eventually replace HFCs by over 170 countries, including 100 developing countries like China and India where air conditioning use is growing fastest. This time, President Barack Obama called it “an ambitious and far reaching solution” to a “rapidly growing threat to the health of our planet”.
...
That seems to be a bit hyperbolic; this is a big deal, according to the NRDC it is “equal to stopping the entire world’s fossil-fuel CO2 emissions for more than two years,” but it is not like anybody has to give anything up, change their lifestyle or move from Phoenix to Detroit. They have until 2024 to even start phasing HFCs out, which will take decades.
UQ
Anyway, the 100 years effect after recent bans would still last for another many decades to come.
2. How about the combination of CFC/Aerosols?
CFCs (Fridges and aerosols.) - 25%, but increasing due to ability to survive within the atmosphere for 100 years.
UQ
Q
" Aerosols are suspensions of tiny particles in the atmosphere, and have both anthropogenic (i.e., man-made) sources such as industrial processes and car emissions, and natural sources such as forest fires, volcanoes, and wave-breaking in the ocean. Aerosol particles affect Earth's climate, both individually and by serving as the nuclei around which cloud drops form, by influencing how much solar energy is absorbed by Earth (including the oceans, atmosphere, and land) or is reflected back into space. Collecting accurate data and achieving better understanding of the roles in which aerosols participate is thus crucial to understanding their effects on Earth's climate. Graphic courtesy of Pacific Northwest National Laboratory "
UQ
2 points:
1. For the combination CFC/Fridges:
Q
Global treaty signed to ban HFC refrigerants
Lloyd Alter (@lloydalter)
Business / Environmental Policy
October 17, 2016
https://www.treehugger.com/environmental-policy/global-treaty-signed-ban-hfc-refrigerants.html
The Chlorofluorocarbons (CFCs) were the cause of a giant hole in the ozone layer, which has been shrinking ever since. Unfortunately, the replacement chemicals, hydrofluorocarbons (HFCs) had their own major problem: they are a seriously bad greenhouse gas, far worse than Carbon Dioxide. (Christine explains here) Also in the period between the Montreal Protocol and today, the use of air conditioning has exploded in the developing world as the middle class grows, and in the developed world as it gets hotter.
...
But this past weekend an agreement was reached to reduce and eventually replace HFCs by over 170 countries, including 100 developing countries like China and India where air conditioning use is growing fastest. This time, President Barack Obama called it “an ambitious and far reaching solution” to a “rapidly growing threat to the health of our planet”.
...
That seems to be a bit hyperbolic; this is a big deal, according to the NRDC it is “equal to stopping the entire world’s fossil-fuel CO2 emissions for more than two years,” but it is not like anybody has to give anything up, change their lifestyle or move from Phoenix to Detroit. They have until 2024 to even start phasing HFCs out, which will take decades.
UQ
Anyway, the 100 years effect after recent bans would still last for another many decades to come.
2. How about the combination of CFC/Aerosols?
