The efficacy E is then used to define an effective forcing fe = f E. Table 4 - 2 summarizes the forcings, responses, efficacies, and effective forcings of
different forcing agents from several models.
A seminal paper [3] lead authored by James Hansen of GISS (henceforth Hansen 2005), based on simulations by a previous version of the GISS GCM, Model E, estimated efficacies
for different forcing agents.
This motivated the introduction of the concept of efficacies
of different forcing agents (Joshi et al., 2003; Hansen and Nazarenko, 2004).
On the contrary, I want to separate out the effects on climate sensitivity estimation of varying GMST responses to
different forcing agents, which is what MEA15 is about, from the effects of time - varying climate sensitivity in GISS - E2 - R.