Articles | Volume 4, issue 2
Research article
22 May 2023
Research article |  | 22 May 2023

The teleconnection of extreme El Niño–Southern Oscillation (ENSO) events to the tropical North Atlantic in coupled climate models

Jake W. Casselman, Joke F. Lübbecke, Tobias Bayr, Wenjuan Huo, Sebastian Wahl, and Daniela I. V. Domeisen

Data sets

JRA-55: Japanese 55-year Reanalysis, Monthly Means and Variances Japan Meteorological Agency

NOAA Extended Reconstructed Sea Surface Temperature (ERSST), Version 5 B. Huang, P. W. Thorne, V. F. Banzon, T. Boyer, G. Chepurin, J. H. Lawrimore, M. J. Menne, T. M. Smith, R. S. Vose, and H. M. Zhang

CESM1.0.6 full solar variability ensemble T. Kruschke, K. Matthes, and S. Wahl

SOLAR-FULL-FOCI ensemble (SOLCHECK) S. Wahl and W. Huo

Model code and software

CESM1.0 Public Release CESM - Community Earth System Model, CESG - Software Engineering Group, and NCAR

NEMO Release 3.6 G. Madec and the NEMO System Team

Supplementary Materila for the Flexible Ocean and Climate Infrastructure Version 1 (FOCI1): Mean State and Variability S. Wahl

Short summary
El Niño–Southern Oscillation (ENSO) has remote effects on the tropical North Atlantic (TNA), but the connections' nonlinearity (strength of response to an increasing ENSO signal) is not always well represented in models. Using the Community Earth System Model version 1 – Whole Atmosphere Community Climate Mode (CESM-WACCM) and the Flexible Ocean and Climate Infrastructure version 1, we find that the TNA responds linearly to extreme El Niño but nonlinearly to extreme La Niña for CESM-WACCM.