The social cost of carbon (SCC) for a given year is an estimate, in dollars, of the present
discounted value of the damage caused by a 1 - metric ton increase in CO2 emissions into the atmosphere in that year; or equivalently, the benefits of reducing CO2 emissions by the same amount in that given year.
Not exact matches
Some breeders kill the adult dogs and cats when they can no longer breed and are no longer profitable (psychologically and physically
damaged, these animals are not «considered» pets); some sell the adult animals at auctions to receive a «salvageable
value» for the investment made in the animal (similar to livestock); and some give away their adult dogs or cats for free or at a
discounted price to rescue groups and consumers (freeing them up financially so they don't have to pay for the up - keep
of an older animal).
A 3 %
discount rate essentially means that any
damage a thousand years out, no matter how catastrophic, is
valued at essentially zero: A
damage of one trillion dollars a thousand years out
discounts to about 14 cents today.
Whatever the
discount rate chosen, the present
value of the, «projected global economic
damage,» would be so infinitesimally small that going out 100 or more years into the future would essentially be meaningless, mathematically.
If any
of the input
values ECS,
damage function, or
discount rate were set to defensible lower
values, the net benefit would be much more negative and probably forever.
Let us suppose for the sake
of argument that a ton
of CO2 emitting today will generate $ 20 in present -
discounted value of net future
damages; this is the «social cost
of carbon.»
The fourth
value also uses a 3 %
discount rate, but represents the 95th percentile across the models instead
of the average, in order to try and include the potential for higher monetary
damages caused by climate change.
The social cost
of carbon is the
discounted monetary
value of future climate change
damages due to additional CO2 emissions (for example, the costs
of adverse agricultural effects, protecting against rising sea levels, health impacts, species loss, risks
of extreme warming scenarios, and so on).
He sought
damages from his employers («CCRL»): settlement was reached on the basis that the gross
value of the claim was about 」 2m but that the Claimant would accept 」 400,000 in
damages on the basis
of an 80 %
discount for contributory negligence.