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The climate change that would happen if anthropogenic emissions were kept
constant.
Zero emissions commitment
The climate change that would result from making anthropogenic emissions
zero.
Feasible scenario commitment
The climate change that corresponds to the lowest emission scenario that is
possible.
Infrastructure commitment
The climate change that would happen if existing greenhouse gas and aerosol
emitting infrastructure was used until the end of its lifetime.
Climate extreme (extreme weather or climate event)
The occurrence of a weather or climate value that is well above (or below) another
value near the upper (or lower) ends of the range of observed values. Both extreme
weather events and extreme climate events are often referred to collectively as
"climate extremes".
Climate feedback loops
An interaction in which a disturbance in one climate quantity causes a change in a
second quantity, which ultimately leads to another change in the first. Negative
feedback means the initial disturbance is weakened by the changes it causes;
positive feedback means the initial disturbance is enhanced. The initial disturbance
can be caused by either an external or internal force.
Climate justice
See Justice.
Climate neutrality
The concept of a state in which human activities have no overall effect on the
climate. Reaching this state would require balancing emissions released with
