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• W3091240197 abstract "Abstract Sea ice cover in the Arctic and Antarctic is an important indicator of changes in the climate, with important environmental, economic and security consequences. The complexity of the spatio-temporal dynamics of sea ice makes it difficult to assess the temporal nature of the changes—e.g. linear or exponential—and their precise geographical loci. In this study, Koopman Mode Decomposition (KMD) is applied to satellite data of sea ice concentration for the Northern and Southern hemispheres to gain insight into the temporal and spatial dynamics of the sea ice behavior and to predict future sea ice behavior. We observe spatial modes corresponding to the mean and annual variation of Arctic and Antarctic sea ice concentration and observe decreases in the mean sea ice concentration from early to later periods, as well as corresponding shifts in the locations that undergo significant annual variation in sea ice concentration. We discover exponentially decaying spatial modes in both hemispheres and discuss their precise spatial extent, and also perform predictions of future sea ice concentration. The Koopman operator-based, data-driven decomposition technique gives insight into spatial and temporal dynamics of sea ice concentration not apparent in traditional approaches." @default.
• W3091240197 created "2020-10-08" @default.
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• W3091240197 date "2020-10-01" @default.
• W3091240197 modified "2023-10-16" @default.
• W3091240197 title "Exponentially decaying modes and long-term prediction of sea ice concentration using Koopman mode decomposition" @default.
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• W3091240197 doi "https://doi.org/10.1038/s41598-020-73211-z" @default.
• W3091240197 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7530978" @default.
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• W3091240197 hasPublicationYear "2020" @default.
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