Article ; Online: Spatiotemporal evolution of sea ice and its teleconnections with large-scale climate indices over Antarctica.
2023 Volume 188, Page(s) 114634
Abstract: Sea ice variability patterns are highly influenced by several large-scale ocean-atmospheric oscillations. We analysed both statistical and wavelet coherence methods to examine sea ice's interannual and interdecadal variability. During the past 42-year, ... ...
Abstract | Sea ice variability patterns are highly influenced by several large-scale ocean-atmospheric oscillations. We analysed both statistical and wavelet coherence methods to examine sea ice's interannual and interdecadal variability. During the past 42-year, the total Southern Ocean sea ice extent (SIE) has expanded, while the Amundsen-Bellingshausen Sea SIE has decreased. A wavelet coherence analysis (WCA) of El Niño Southern Oscillation (ENSO) and the SIE in various sectors revealed an out-of-phase correlation between the Indian Ocean and the Ross Sea. There are significant out-of-phase correlations between sea ice variability and Indian Ocean Dipole (IOD) on an interannual scale. A consistent phase relationship was seen between SIE and Southern Annular Mode (SAM) over the past decade, with in-phase relationships advancing to out-of-phase relationships. The Interdecadal Pacific Oscillation (IPO) shifted from positive to negative after the 1990s. In recent years, SAM has had a stronger impact on sea ice variability than ENSO. |
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MeSH term(s) | Ice Cover ; Antarctic Regions ; El Nino-Southern Oscillation ; Indian Ocean |
Language | English |
Publishing date | 2023-01-30 |
Publishing country | England |
Document type | Journal Article |
ZDB-ID | 2001296-2 |
ISSN | 1879-3363 ; 0025-326X |
ISSN (online) | 1879-3363 |
ISSN | 0025-326X |
DOI | 10.1016/j.marpolbul.2023.114634 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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