An evaluation of climate model simulations used in the latest IPCC -LSB--RSB- reports finds that the atmospheric changes that account for most of the 113 year warming trend are not predicted to result from historical radiative changes, including both natural and anthropogenic forcings. (realclimate.org)
This necessitates taking into account atmospheric radiative transfer so that any SST warming is driven by radiative changes (e.g., changes in greenhouse gas concentrations) and resultant changes in the surface fluxes. (climate-dynamics.org)
On the other hand, changes in surface boundary conditions such as sea surface temperature (SST) anomalies in the tropics (Hoerling et al. 2001, 2004; Bracco et al. 2004), winds in the stratosphere (Scaife et al. 2014; Kidston et al. 2015), and radiative changes associated with increasing GHG concentrations (Selten et al. 2004; Deser et al. 2012) may also influence the NAO. (link.springer.com)