«The existence of
unrealized warming complicates the CO2 and trace gas issue and limits the near - term effectiveness of reductions in greenhouse gas emissions»
In fact, we know there remains
unrealized warming from the greenhouse gases we've already emitted because there is a global energy imbalance.
So if you look at
the unrealized warming starting at any date from 1950 to 2010, it will be a fairly constant number.
The unrealized warming has been fairly constant over the past ~ 50 years whereas the radiative forcing increases the further back in time you choose your initial point.
What we're talking about here is basically the amount of
unrealized warming, whereas the radiative forcing tells you the total net energy imbalance since your choice of start date (the IPCC uses 1750).
However, much of the warming in the next 50 years will be from presently «
unrealized warming» caused by the existing planetary radiative imbalance of at least 0.5 W / m2 (8, 37).
Not exact matches
Solar forcing has increased over the 20th century and given that the oceans have not yet had time to equilibrate to the new levels of forcing, it must have contributed some to the recent
warming, in fact, that equlibration was further delayed by the cooling period, so the
unrealized climate commitment would have been greater than ordinarily expected given that most of the increase in solar activity occurred in the first half of the century.
To determine what «
unrealized»
warming is in the pipeline you would have to know what the normal forcing «it» should receive plus the amount of additional forcing we have provided.