Exponentially decaying modes and long-term prediction of sea ice concentration using Koopman mode decomposition.

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 la

SUBMITTER: Hogg J 

PROVIDER: S-EPMC7530978 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature