Impacts of Atlantic multidecadal variability on the tropical Pacific: a multi-model study

Abstract Atlantic multidecadal variability (AMV) has been linked to the observed slowdown of global warming over 1998–2012 through its impact on tropical Pacific. Given importance Pacific variability, better understanding this Atlantic–Pacific teleconnection is key for improving climate predictions, but robustness and strength link are uncertain. Analyzing a multi-model set sensitivity experiments, we find that models differ by factor 10 in simulating amplitude Equatorial cooling response AMV warming. The inter-model spread mainly driven different amounts moist static energy injection from surface into upper troposphere. We reduce uncertainty analytically correcting their mean precipitation biases quantify that, following an 0.26 °C warming, equatorial cools 0.11 with standard deviation 0.03 °C.