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Lecture 12

ENSP 102 Lecture Notes - Lecture 12: Montreal Protocol, Ozone Layer, Ronald Reagan

Environmental Science and Policy
Course Code
ENSP 102

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March 12, 2019
Air Status and Trends
Minamata Convention 2013
US signs and submits “instrument of acceptance”
Entered into force in 2017
Stratospheric Ozone and Montreal Protocol
“Good up high, bad nearby
Ozone layer thinning→ UV radiation → skin cancer
Montreal protocol
Ratified by US
Phases out ozone depleting chemicals (CFCs)
Success story for international treaties
Scientist played a critical role
President reagan had skin cancer
Adoption of precautionary principle
Substitutes available (HFCs)--industries were okay with this
However, HFCs were a major source of GHG emissions
Kigali Amendment to the Montreal Protocol
Entered to force, January 2019
Not ratified by the US
Phases out HFCs (a potent greenhouse gas that does not deplete ozone
and had been seen as a good substitute)
Has support of industry because US produces substitutes
But it is a climate action and also multilateral (things trump does
not like)
Air quality is improving
Still have a long way to go-still areas of nonattainment
Arguments for and against regulation continue to play out in air arena
Water Quality
Why do we care about water and good water quality?
Human health
Ecosystem health
Economic health
Water uses
Energy production
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