Volcanic activity sparks the Arctic Oscillation

Abstract The parasol effect of volcanic dust and aerosol caused by volcanic eruption results in the deepening and strengthening of the Arctic vortex system, thus stimulating or strengthening the Arctic Oscillation (AO). Three of the strongest AOs in more than a century have been linked to volcanic e...

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Bibliographic Details
Published in:Scientific Reports
Main Authors: Qu, Weizheng, Huang, Fei, Zhao, Jinping, Du, Ling, Cao, Yong
Other Authors: The National Science Foundation of China: Arctic sea ice and the coupling of the upper ocean circulation changes and climate effect
Format: Article in Journal/Newspaper
Language:English
Published: Springer Science and Business Media LLC 2021
Subjects:
Multidisciplinary
Arctic
Online Access:http://dx.doi.org/10.1038/s41598-021-94935-6
https://www.nature.com/articles/s41598-021-94935-6.pdf
https://www.nature.com/articles/s41598-021-94935-6
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Summary:Abstract The parasol effect of volcanic dust and aerosol caused by volcanic eruption results in the deepening and strengthening of the Arctic vortex system, thus stimulating or strengthening the Arctic Oscillation (AO). Three of the strongest AOs in more than a century have been linked to volcanic eruptions. Every significant fluctuation of the AO index (AOI = ΔH_middle latitudes − ΔH_Arctic) for many years has been associated with a volcanic eruption. Volcanic activity occurring at different locations in the Arctic vortex circulation will exert different effects on the polar vortex.

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