Articles | Volume 4, issue 1
Research article
10 Jan 2023
Research article |  | 10 Jan 2023

Revisiting the wintertime emergent constraint of the southern hemispheric midlatitude jet response to global warming

Philipp Breul, Paulo Ceppi, and Theodore G. Shepherd

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Relationship between southern hemispheric jet variability and forced response: the role of the stratosphere
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Weather Clim. Dynam., 3, 645–658,,, 2022
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Cited articles

Barnes, E. A. and Polvani, L.: Response of the Midlatitude Jets, and of Their Variability, to Increased Greenhouse Gases in the CMIP5 Models, J. Climate, 26, 7117–7135,, 2013. a
Bracegirdle, T. J., Shuckburgh, E., Sallee, J.-B., Wang, Z., Meijers, A. J. S., Bruneau, N., Phillips, T., and Wilcox, L. J.: Assessment of surface winds over the Atlantic, Indian, and Pacific Ocean sectors of the Southern Ocean in CMIP5 models: historical bias, forcing response, and state dependence, J. Geophys. Res.-Atmos., 118, 547–562,, 2013. a
Breul, P.: Code and Data, figshare [code and data set],, 2023. a, b
Breul, P., Ceppi, P., and Shepherd, T. G.: Relationship between southern hemispheric jet variability and forced response: the role of the stratosphere, Weather Clim. Dynam., 3, 645–658,, 2022. a
Codron, F.: Relations between Annular Modes and the Mean State: Southern Hemisphere Winter, J. Atmos. Sci., 64, 3328–3339,, 2007. a
Short summary
Accurately predicting the response of the midlatitude jet stream to climate change is very important, but models show a variety of possible scenarios. Previous work identified a relationship between climatological jet latitude and future jet shift in the southern hemispheric winter. We show that the relationship does not hold in separate sectors and propose that zonal asymmetries are the ultimate cause in the zonal mean. This questions the usefulness of the relationship.