In
none of your model scenarios involving realistic near - term Carbon releases (1000 gigatonnes or less, based on the consideration that the 1990 - 1999 release is estimated in IPCC TAR to be 6.3 gigatonnes per year) does more than 20 % of the injected CO2 remain in the atmosphere for 1000 years.
In as much as
none of the model scenarios can be validated, all predictions about future climate conditions amount to nothing more that, «Wait to see if our predictions come true; you'll see then.
Not exact matches
Since
none of the four
models considered by the Mediterranean study consistently out - performed the others in simulating present - day climate, the researchers combined their results to produce a single composite
scenario for each climate variable.2 To prevent the GCM with the greatest sensitivity from dominating the
scenarios, they first had to standardise the
model results.
While these and other studies give grounds to believe that very low emissions pathways are not economically prohibitive,
none model a short term (e.g., 2010 - 2020) decline
of CO2 emissions that is as rapid as that postulated here or in the Ackerman et al.
scenarios, all
of which have emissions falling by more than 50 % between now and 2020.
Even if you quibble about the meaning
of the term «significant», the fact that
none of the datasets have risen to the levels predicted by past climate
models — even in their «best case
scenarios» for CO2 emissions — still blows the hypothesis out
of the water.
While two
of the
models eventually realized a slow shutdown
of the AMOC under RCP8.5 (the
scenario with the largest amount
of warming),
none exhibited an abrupt change
of the AMOC.
If, however, the underlying world oil prices are below $ 90 per barrel during the next two decades, then
none of the policy
scenarios modeled achieves the desired targets for annual U.S. CO2 emissions.