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Speeding extreme cold events under global warming
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DOI：10.1088/1748-9326/ac8110.png)
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Abstract
En 中文
Regional anthropogenic warming caused stronger and shorter cold events in the winter (December-February) of 2020-21, with the strongest cooling of -10 degrees C covering an area of 1.63 x 10(7) km(2) over East Asia. In contrast to previous cold events, the extreme cold events in 2020-21 were a result of meridional circulation change due to stronger regional anthropogenic warming. Our results show a multi-aspect anthropogenic effect in the process of cold events, and illustrate that anthropogenic effect played a role not only in the thermodynamic process but also in the dynamic process. The exchange of equilibrium from low to high index does not take fewer cold events anymore; new principles on equilibrium have appeared and will soon play an effect in more fields of climate change.
Keywords:
extreme cold event
anthropogenic effect
meridional circulation
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