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dc.contributor.authorLiang, Yu-Chiao  Concept link
dc.contributor.authorKwon, Young-Oh  Concept link
dc.contributor.authorFrankignoul, Claude  Concept link
dc.date.accessioned2021-04-28T21:17:40Z
dc.date.available2021-04-28T21:17:40Z
dc.date.issued2020-12-23
dc.identifier.citationLiang, Y., Kwon, Y., & Frankignoul, C. (2021). Autumn Arctic Pacific sea ice dipole as a source of predictability for subsequent spring Barents Sea ice condition. Journal of Climate, 34(2), 787-804.en_US
dc.identifier.urihttps://hdl.handle.net/1912/27029
dc.description© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Liang, Y., Kwon, Y., & Frankignoul, C. Autumn Arctic Pacific sea ice dipole as a source of predictability for subsequent spring Barents Sea ice condition. Journal of Climate, 34(2), (2021): 787-804, https://doi.org/10.1175/JCLI-D-20-0172.1.en_US
dc.description.abstractThis study uses observational and reanalysis datasets in 1980–2016 to show a close connection between a boreal autumn sea ice dipole in the Arctic Pacific sector and sea ice anomalies in the Barents Sea (BS) during the following spring. The September–October Arctic Pacific sea ice dipole variations are highly correlated with the subsequent April–May BS sea ice variations (r = 0.71). The strong connection between the regional sea ice variabilities across the Arctic uncovers a new source of predictability for spring BS sea ice prediction at 7-month lead time. A cross-validated linear regression prediction model using the Arctic Pacific sea ice dipole with 7-month lead time is demonstrated to have significant prediction skills with 0.54–0.85 anomaly correlation coefficients. The autumn sea ice dipole, manifested as sea ice retreat in the Beaufort and Chukchi Seas and expansion in the East Siberian and Laptev Seas, is primarily forced by preceding atmospheric shortwave anomalies from late spring to early autumn. The spring BS sea ice increases are mostly driven by an ocean-to-sea ice heat flux reduction in preceding months, associated with reduced horizontal ocean heat transport into the BS. The dynamical linkage between the two regional sea ice anomalies is suggested to involve positive stratospheric polar cap anomalies during autumn and winter, with its center slowly moving toward Greenland. The migration of the stratospheric anomalies is followed in midwinter by a negative North Atlantic Oscillation–like pattern in the troposphere, leading to reduced ocean heat transport into the BS and sea ice extent increase.en_US
dc.description.sponsorshipThis study is supported by NSF’s Office of Polar Programs (Grant 1736738). We also acknowledge support by the Blue-Action project (European Union’s Horizon 2020 research and innovation programme, Grant 727852).en_US
dc.publisherAmerican Meteorological Societyen_US
dc.relation.urihttps://doi.org/10.1175/JCLI-D-20-0172.1
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectArcticen_US
dc.subjectSea iceen_US
dc.subjectAtmospheric circulationen_US
dc.subjectOcean circulationen_US
dc.subjectSeasonal forecastingen_US
dc.titleAutumn Arctic Pacific sea ice dipole as a source of predictability for subsequent spring Barents Sea ice conditionen_US
dc.typeArticleen_US
dc.identifier.doi10.1175/JCLI-D-20-0172.1


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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International