AI Article Synopsis
- The Atlantic Multidecadal Oscillation (AMO) is a climate pattern that can help predict changes in weather systems globally, particularly in East Asia.
- The study analyzed data from 1941 to 2021 to see how AMO impacts the winter cold surges and late summer typhoons, finding that these weather events change in frequency depending on the AMO phase.
- Results showed that during a negative AMO phase, cold surges saw an increase while blocking surges decreased, and that the southward shift of the westerly jet stream correlated with more frequent typhoons in late summer, indicating the potential for reliable long-term climate predictions in East Asia.
Article Abstract
The Atlantic Multidecadal Oscillation (AMO) is a climate phenomenon that can be observed in historical data and has potential connections to global synoptic climatic changes. The AMO can be used to predict climate patterns. This study examined how AMO-induced changes in the westerly jet stream over East Asia could affect the climatological distribution of weather patterns. Cluster analyses were conducted to determine how the AMO influences the frequency of cold surges in winter and typhoons in late summer for the period from 1941 to 2021. We observed inverse changes in the frequency of wintertime wave-train versus blocking cold surges during the negative AMO phase, the former increasing and the latter decreasing. This was associated with a southward shift of the upper-tropospheric westerly jet stream. Additionally, the southward shift of the westerly jet stream and a more pronounced wave pattern during late summer had a significant effect on the increase in the frequency of typhoons. These findings suggest that long-term predictions of East Asian synoptic climatology on an AMO timescale may be feasible.
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| http://dx.doi.org/10.1016/j.jenvman.2024.123549 | DOI Listing |
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Article Synopsis
- The Atlantic Multidecadal Oscillation (AMO) is a climate pattern that can help predict changes in weather systems globally, particularly in East Asia.
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