"Temperature perturbations" refer to small changes or disturbances in temperature.
Full definition
Two approaches are used: applying regressions to experiments as they approach equilibrium, and equilibrium experiments forced separately by CO2 and patterned sea
surface temperature perturbations alone.
After the removal from the data set of short periods
of temperature perturbation that relate to near - equator volcanic eruption, we use derivatives to document the presence of a 5 - to 7 - month delayed close relationship between SOI and GTTA.
At other times, it amplified
small temperature perturbations into climate events that changed the face of the planet, as it did in the ice age cycles, the period we are still currently in.
The effects of differences in radiative restoring that you refer to may be significant, although even here I do not think that these differences are primarily due to the; my impression is that high latitudes have weaker radiative restoring because
surface temperature perturbations are not as strongly coupled to the troposphere so have more difficulty radiating to space.
dH / dt = F - f (T) where F is the forcing, f (T) is the feedback term, T is
temperature perturbation.
Lifetime of anthropogenic climate change: millennial time scales of potential CO2 and surface
temperature perturbations.