The set - up of
the numerical experiments suggests that the temporal resolution of the atmospheric forcing field is responsible for the significant increase in vertical velocities, in agreement with previous studies (Danioux et al., 2008; Komori et al., 2008).
For example, referring to the 1979 Charney report's ECS range of 1.5 to 4.5 K / doubling, they wrote: «Results of most
numerical model
experiments suggest that a doubling of C02, if maintained indefinitely, would cause a global surface air warming of between 1.5 C and 4.5 C.