TY - JOUR
T1 - Impacts of Atlantic multidecadal variability on the tropical Pacific
T2 - a multi-model study
AU - Ruprich-Robert, Yohan
AU - Moreno-Chamarro, Eduardo
AU - Levine, Xavier
AU - Bellucci, Alessio
AU - Cassou, Christophe
AU - Castruccio, Frederic
AU - Davini, Paolo
AU - Eade, Rosie
AU - Gastineau, Guillaume
AU - Hermanson, Leon
AU - Hodson, Dan
AU - Lohmann, Katja
AU - Lopez-Parages, Jorge
AU - Monerie, Paul Arthur
AU - Nicolì, Dario
AU - Qasmi, Said
AU - Roberts, Christopher D.
AU - Sanchez-Gomez, Emilia
AU - Danabasoglu, Gokhan
AU - Dunstone, Nick
AU - Martin-Rey, Marta
AU - Msadek, Rym
AU - Robson, Jon
AU - Smith, Doug
AU - Tourigny, Etienne
N1 - Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12
Y1 - 2021/12
N2 - Atlantic multidecadal variability (AMV) has been linked to the observed slowdown of global warming over 1998–2012 through its impact on the tropical Pacific. Given the global importance of tropical Pacific variability, better understanding this Atlantic–Pacific teleconnection is key for improving climate predictions, but the robustness and strength of this link are uncertain. Analyzing a multi-model set of sensitivity experiments, we find that models differ by a factor of 10 in simulating the amplitude of the Equatorial Pacific cooling response to observed AMV warming. The inter-model spread is mainly driven by different amounts of moist static energy injection from the tropical Atlantic surface into the upper troposphere. We reduce this inter-model uncertainty by analytically correcting models for their mean precipitation biases and we quantify that, following an observed 0.26 °C AMV warming, the equatorial Pacific cools by 0.11 °C with an inter-model standard deviation of 0.03 °C.
AB - Atlantic multidecadal variability (AMV) has been linked to the observed slowdown of global warming over 1998–2012 through its impact on the tropical Pacific. Given the global importance of tropical Pacific variability, better understanding this Atlantic–Pacific teleconnection is key for improving climate predictions, but the robustness and strength of this link are uncertain. Analyzing a multi-model set of sensitivity experiments, we find that models differ by a factor of 10 in simulating the amplitude of the Equatorial Pacific cooling response to observed AMV warming. The inter-model spread is mainly driven by different amounts of moist static energy injection from the tropical Atlantic surface into the upper troposphere. We reduce this inter-model uncertainty by analytically correcting models for their mean precipitation biases and we quantify that, following an observed 0.26 °C AMV warming, the equatorial Pacific cools by 0.11 °C with an inter-model standard deviation of 0.03 °C.
UR - https://www.scopus.com/pages/publications/85107412443
U2 - 10.1038/s41612-021-00188-5
DO - 10.1038/s41612-021-00188-5
M3 - Article
AN - SCOPUS:85107412443
SN - 2397-3722
VL - 4
JO - npj Climate and Atmospheric Science
JF - npj Climate and Atmospheric Science
IS - 1
M1 - 33
ER -