Fig. 4
From: A positive atmospheric feedback on the North Atlantic warming hole
Layer-mean virtual temperature (DJF) in the lower, middle, and upper troposphere over (a) the observed NAWH (55\(^\circ\)N, 320\(^\circ\)W) and (b) the NAWH-S (35\(^\circ\)N, 320\(^\circ\)W) relative to the control experiment. The profiles relative to control are calculated by NAWH-CTRL (black), NAWH-S—CTRL (blue), and those from ECHAM as in Karnauskas et al. (red).
