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

Related authors

Quantifying stratospheric biases and identifying their potential sources in subseasonal forecast systems
Zachary D. Lawrence, Marta Abalos, Blanca Ayarzagüena, David Barriopedro, Amy H. Butler, Natalia Calvo, Alvaro de la Cámara, Andrew Charlton-Perez, Daniela I. V. Domeisen, Etienne Dunn-Sigouin, Javier García-Serrano, Chaim I. Garfinkel, Neil P. Hindley, Liwei Jia, Martin Jucker, Alexey Y. Karpechko, Hera Kim, Andrea L. Lang, Simon H. Lee, Pu Lin, Marisol Osman, Froila M. Palmeiro, Judith Perlwitz, Inna Polichtchouk, Jadwiga H. Richter, Chen Schwartz, Seok-Woo Son, Irina Statnaia, Masakazu Taguchi, Nicholas L. Tyrrell, Corwin J. Wright, and Rachel W.-Y. Wu
Weather Clim. Dynam., 3, 977–1001, https://doi.org/10.5194/wcd-3-977-2022,https://doi.org/10.5194/wcd-3-977-2022, 2022
Short summary
Minimal impact of model biases on Northern Hemisphere El Niño–Southern Oscillation teleconnections
Nicholas L. Tyrrell and Alexey Yu. Karpechko
Weather Clim. Dynam., 2, 913–925, https://doi.org/10.5194/wcd-2-913-2021,https://doi.org/10.5194/wcd-2-913-2021, 2021
Short summary

Related subject area

Atmospheric teleconnections incl. stratosphere–troposphere coupling
How do different pathways connect the stratospheric polar vortex to its tropospheric precursors?
Raphael Harry Köhler, Ralf Jaiser, and Dörthe Handorf
Weather Clim. Dynam., 4, 1071–1086, https://doi.org/10.5194/wcd-4-1071-2023,https://doi.org/10.5194/wcd-4-1071-2023, 2023
Short summary
A critical evaluation of decadal solar cycle imprints in the MiKlip historical ensemble simulations
Tobias C. Spiegl, Ulrike Langematz, Holger Pohlmann, and Jürgen Kröger
Weather Clim. Dynam., 4, 789–807, https://doi.org/10.5194/wcd-4-789-2023,https://doi.org/10.5194/wcd-4-789-2023, 2023
Short summary
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
Weather Clim. Dynam., 4, 471–487, https://doi.org/10.5194/wcd-4-471-2023,https://doi.org/10.5194/wcd-4-471-2023, 2023
Short summary
Using large ensembles to quantify the impact of sudden stratospheric warmings and their precursors on the North Atlantic Oscillation
Philip E. Bett, Adam A. Scaife, Steven C. Hardiman, Hazel E. Thornton, Xiaocen Shen, Lin Wang, and Bo Pang
Weather Clim. Dynam., 4, 213–228, https://doi.org/10.5194/wcd-4-213-2023,https://doi.org/10.5194/wcd-4-213-2023, 2023
Short summary
Stratospheric influence on the winter North Atlantic storm track in subseasonal reforecasts
Hilla Afargan-Gerstman, Dominik Büeler, C. Ole Wulff, Michael Sprenger, and Daniela I. V. Domeisen
Weather Clim. Dynam. Discuss., https://doi.org/10.5194/wcd-2022-58,https://doi.org/10.5194/wcd-2022-58, 2022
Revised manuscript accepted for WCD
Short summary

Cited articles

Baldwin, M. P., Stephenson, D. B., Thompson, D. W., Dunkerton, T. J., Charlton, A. J., and O'Neill, A.: Stratospheric memory and skill of extended‐range weather forecasts, Science, 301, 5633, 636–640, https://doi.org/10.1126/science.1087143, 2003. 
Bayr, T., Latif, M., Dommenget, D., Wengel, C., Harlaß, J., and Park, W.: Mean-state dependence of ENSO atmospheric feedbacks in climate models, Clim. Dynam., 50, 3171–3194, https://doi.org/10.1007/s00382-017-3799-2, 2018. 
Bayr, T., Domeisen, D. I. V., and Wengel, C.: The effect of the equatorial Pacific cold SST bias on simulated ENSO teleconnections to the North Pacific and California, Clim. Dynam., 53, 3771–3789, https://doi.org/10.1007/s00382-019-04746-9, 2019. 
Bell, C. J., Gray, L. J., Charlton-Perez, A. J., Joshi, M. M., and Scaife, A. A.: Stratospheric communication of El Niño tele- connections to European winter, J. Climate, 22, 4083–4096, https://doi.org/10.1175/2009JCLI2717.1, 2009. 
Butler, A. H., Polvani, L. M., and Deser, C.: Separating the stratospheric and tropospheric pathways of El Niño–Southern Oscillation teleconnections, Environ. Res. Lett., 9, 024015, https://doi.org/10.1088/1748-9326/9/2/024014, 2014. 
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.