Wan, X., Chang, P., Jackson, C.S., Ji, L. and Li, M. 2011. Plausible effect of climate model bias on abrupt climate change simulations in Atlantic sector. Deep-Sea Research II 58: 1904-1913.
Writing as background for their study, authors Wan et al. (2011) state that “the notorious tropical bias problem in climate simulations of global coupled general circulation models (e.g., Mechoso et al., 1995; Latif et al., 2001; Davey et al., 2002; Meehl et al., 2005) manifests itself particularly strongly in the tropical Atlantic,” and they say that “while progress towards reducing tropical climate biases has been made in the tropical Pacific over the past decades (e.g., Deser et al., 2006), little or no progress has been made in the tropical Atlantic (Breugem et al., 2006; Richter and Xie, 2008; Wahl et al., 2009).” In fact, they state that “the climate bias problem is still so severe that one of the most basic features of the equatorial Atlantic Ocean — the eastward shoaling thermocline — cannot be reproduced by most of the Intergovernmental Panel on Climate Change (IPCC) assessment report (AR4) models,” citing Richter and Xie (2008). (more…)