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The intensification of winter mid-latitude storm tracks in the Southern Hemisphere
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2022
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Source: Nature Climate Change, 12(6), 553-557
[PDF-339.72 KB]
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Journal Title:Nature Climate Change
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Description:The strength of mid-latitude storm tracks shapes weather and climate phenomena in the extra-tropics, as these storm tracks control the daily to multi-decadal variability of precipitation, temperature and winds. By the end of this century, winter mid-latitude storms are projected to intensify in the Southern Hemisphere, with large consequences over the entire extra-tropics. Therefore, it is critical to be able to accurately assess the impacts of anthropogenic emissions on these storms to improve societal preparedness for future changes. Here we show that current climate models severely underestimate the intensification in mid-latitude storm tracks in recent decades. Specifically, the intensification obtained from reanalyses has already reached the model-projected end-of-the-century intensification. The biased intensification is found to be linked to biases in the zonal flow. These results question the ability of climate models to accurately predict the future impacts of anthropogenic emissions in the Southern Hemisphere mid-latitudes.
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Source:Nature Climate Change, 12(6), 553-557
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DOI:
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ISSN:1758-678X;1758-6798;
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Document Type:
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Rights Information:Accepted Manuscript
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Compliance:Submitted
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