As discussed above, keeping global climate close to the Holocene range requires a long - term atmospheric CO2 level of about 350 ppm or less, with
other climate forcings similar to today's levels.
Not exact matches
In
other words, it is possible that the the
climate system does exhibit some kind of long - term chaos in some circumstances, but that the
forcing is strong enough to wipe out any significant uncertainty due to initial conditions — at least if one is content to forecast statistical quantities such as, for example, decadal mean January temperatures in some suitably large region, or perhaps temperature variances or quartiles taken over a
similar period.
The conditions of this orbital
climate forcing are
similar to those of today's interglacial period1, 2, and they rendered the
climate susceptible to
other forcing — for example, to changes in the level of atmospheric carbon dioxide.
Spectral radiance emitted to space consistent with Tyndall gas concentrations (confirms ability to calculate radiative
forcing); magnitude of Tyndall gas radiative
forcing larger than that of all
other known
forcing agents; observed temperature changes
similar in magnitude to those estimated from
forcings (confirms ballpark estimates of
climate sensitivity); observed pattern of temperature changes match Tyndall gas pattern better than that of all
other known
forcing agents.
Results: Spectral radiance emitted to space consistent with Tyndall gas concentrations (confirms ability to calculate radiative
forcing); magnitude of Tyndall gas radiative
forcing larger than that of all
other known
forcing agents; observed temperature changes
similar in magnitude to those estimated from
forcings (confirms ballpark estimates of
climate sensitivity); observed pattern of temperature changes match Tyndall gas pattern better than that of all
other known
forcing agents.