Articles | Volume 3, issue 1
https://doi.org/10.5194/wcd-3-45-2022
https://doi.org/10.5194/wcd-3-45-2022
Research article
 | 
18 Jan 2022
Research article |  | 18 Jan 2022

Sudden stratospheric warmings during El Niño and La Niña: sensitivity to atmospheric model biases

Nicholas L. Tyrrell, Juho M. Koskentausta, and Alexey Yu. Karpechko

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Latest update: 29 Feb 2024
Short summary
El Niño events are known to effect the variability of the wintertime stratospheric polar vortex. The observed relationship differs from what is seen in climate models. Climate models have errors in their average winds and temperature, and in this work we artificially reduce those errors to see how that changes the communication of El Niño events to the polar stratosphere. We find reducing errors improves stratospheric variability, but does not explain the differences with observations.