Trends, abrupt shifts and interannual variability of the Arctic Wintertime Seasonal Sea Ice from 1979 to 2019
The Arctic winter seasonal sea ice (WSSI) concentration from 1979 to 2019 is derived from passive microwave data. Based on Empirical Orthogonal Function (EOF) analysis, the WSSI time series includes regionally different trends, abrupt shifts and interannual variations. The time series of the first E...
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ftdoajarticles:oai:doaj.org/article:626877535c8c46cf871decf8f50114dd 2023-05-15T13:29:30+02:00 Trends, abrupt shifts and interannual variability of the Arctic Wintertime Seasonal Sea Ice from 1979 to 2019 Guanghua Hao Jie Su Timo Vihma Fei Huang 2020-12-01T00:00:00Z https://doi.org/10.1017/aog.2020.68 https://doaj.org/article/626877535c8c46cf871decf8f50114dd EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0260305520000683/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2020.68 0260-3055 1727-5644 https://doaj.org/article/626877535c8c46cf871decf8f50114dd Annals of Glaciology, Vol 61, Pp 441-453 (2020) Abrupt change in 2007 Arctic Ocean multi-year sea ice sea-ice age winter seasonal sea ice Meteorology. Climatology QC851-999 article 2020 ftdoajarticles https://doi.org/10.1017/aog.2020.68 2023-03-12T01:31:55Z The Arctic winter seasonal sea ice (WSSI) concentration from 1979 to 2019 is derived from passive microwave data. Based on Empirical Orthogonal Function (EOF) analysis, the WSSI time series includes regionally different trends, abrupt shifts and interannual variations. The time series of the first EOF mode (PC1) mainly represents the WSSI trend, which is characterized by an increase, particularly in the Pacific sector. PC1 confirms two abrupt shifts in WSSI in 1989 and 2007, with a variance of 31%. After 2007, the large-scale atmospheric circulation anomaly shows a strengthened wavenumber 3 structure at high latitudes associated with a mid-tropospheric low-pressure anomaly in central and western Siberia and a high-pressure anomaly in eastern Siberia in summer and autumn. These patterns have promoted the increased transport of moist static energy to the central Arctic and contributed to increased near-surface air temperatures that may enhance ice melting in summer and reduce ice growth in autumn and winter. The changes in ice melt and growth have had opposite effects in the Pacific and Atlantic sectors: WSSI has increased in the Pacific sector due to the replacement of multi-year ice by WSSI, and decreased in the Atlantic sector due to the replacement of WSSI by open water. Article in Journal/Newspaper Annals of Glaciology Arctic Arctic Ocean Sea ice Siberia Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Pacific Annals of Glaciology 61 83 441 453 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Abrupt change in 2007 Arctic Ocean multi-year sea ice sea-ice age winter seasonal sea ice Meteorology. Climatology QC851-999 |
spellingShingle |
Abrupt change in 2007 Arctic Ocean multi-year sea ice sea-ice age winter seasonal sea ice Meteorology. Climatology QC851-999 Guanghua Hao Jie Su Timo Vihma Fei Huang Trends, abrupt shifts and interannual variability of the Arctic Wintertime Seasonal Sea Ice from 1979 to 2019 |
topic_facet |
Abrupt change in 2007 Arctic Ocean multi-year sea ice sea-ice age winter seasonal sea ice Meteorology. Climatology QC851-999 |
description |
The Arctic winter seasonal sea ice (WSSI) concentration from 1979 to 2019 is derived from passive microwave data. Based on Empirical Orthogonal Function (EOF) analysis, the WSSI time series includes regionally different trends, abrupt shifts and interannual variations. The time series of the first EOF mode (PC1) mainly represents the WSSI trend, which is characterized by an increase, particularly in the Pacific sector. PC1 confirms two abrupt shifts in WSSI in 1989 and 2007, with a variance of 31%. After 2007, the large-scale atmospheric circulation anomaly shows a strengthened wavenumber 3 structure at high latitudes associated with a mid-tropospheric low-pressure anomaly in central and western Siberia and a high-pressure anomaly in eastern Siberia in summer and autumn. These patterns have promoted the increased transport of moist static energy to the central Arctic and contributed to increased near-surface air temperatures that may enhance ice melting in summer and reduce ice growth in autumn and winter. The changes in ice melt and growth have had opposite effects in the Pacific and Atlantic sectors: WSSI has increased in the Pacific sector due to the replacement of multi-year ice by WSSI, and decreased in the Atlantic sector due to the replacement of WSSI by open water. |
format |
Article in Journal/Newspaper |
author |
Guanghua Hao Jie Su Timo Vihma Fei Huang |
author_facet |
Guanghua Hao Jie Su Timo Vihma Fei Huang |
author_sort |
Guanghua Hao |
title |
Trends, abrupt shifts and interannual variability of the Arctic Wintertime Seasonal Sea Ice from 1979 to 2019 |
title_short |
Trends, abrupt shifts and interannual variability of the Arctic Wintertime Seasonal Sea Ice from 1979 to 2019 |
title_full |
Trends, abrupt shifts and interannual variability of the Arctic Wintertime Seasonal Sea Ice from 1979 to 2019 |
title_fullStr |
Trends, abrupt shifts and interannual variability of the Arctic Wintertime Seasonal Sea Ice from 1979 to 2019 |
title_full_unstemmed |
Trends, abrupt shifts and interannual variability of the Arctic Wintertime Seasonal Sea Ice from 1979 to 2019 |
title_sort |
trends, abrupt shifts and interannual variability of the arctic wintertime seasonal sea ice from 1979 to 2019 |
publisher |
Cambridge University Press |
publishDate |
2020 |
url |
https://doi.org/10.1017/aog.2020.68 https://doaj.org/article/626877535c8c46cf871decf8f50114dd |
geographic |
Arctic Arctic Ocean Pacific |
geographic_facet |
Arctic Arctic Ocean Pacific |
genre |
Annals of Glaciology Arctic Arctic Ocean Sea ice Siberia |
genre_facet |
Annals of Glaciology Arctic Arctic Ocean Sea ice Siberia |
op_source |
Annals of Glaciology, Vol 61, Pp 441-453 (2020) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0260305520000683/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2020.68 0260-3055 1727-5644 https://doaj.org/article/626877535c8c46cf871decf8f50114dd |
op_doi |
https://doi.org/10.1017/aog.2020.68 |
container_title |
Annals of Glaciology |
container_volume |
61 |
container_issue |
83 |
container_start_page |
441 |
op_container_end_page |
453 |
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1766000998843678720 |