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dc.contributor.authorLi, Fei
dc.contributor.authorOrsolini, Yvan
dc.contributor.authorWang, Huijun
dc.contributor.authorGao, Yongqi
dc.contributor.authorHe, Shengping
dc.date.accessioned2018-08-01T07:33:01Z
dc.date.available2018-08-01T07:33:01Z
dc.date.issued2018-03
dc.PublishedLi F, Orsolini Y, Wang H, Gao Y, He S. Atlantic Multidecadal Oscillation modulates the impacts of Arctic sea ice decline. Geophysical Research Letters. 2018;45(5):2497-2506eng
dc.identifier.issn1944-8007en_US
dc.identifier.issn0094-8276en_US
dc.identifier.urihttps://hdl.handle.net/1956/17934
dc.description.abstractThe Arctic sea ice cover has been rapidly declining in the last two decades, concurrent with a shift in the Atlantic Multidecadal Oscillation (AMO) to its warm phase around 1996/1997. Here we use both observations and model simulations to investigate the modulation of the atmospheric impacts of the decreased sea ice cover in the Atlantic sector of the Arctic (AASIC) by the AMO. We find that the AASIC loss during a cold AMO phase induces increased Ural blocking activity, a southeastward‐extended snowpack, and a cold continent anomaly over Eurasia in December through northerly cold air advection and moisture transport from the Arctic. The increased Ural blocking activity and more extended Eurasian snowpack strengthen the upward propagation of planetary waves over the Siberian‐Pacific sector in the lower stratosphere and hence lead to a weakened stratospheric polar vortex and a negative Arctic Oscillation (AO) phase at the surface in February. However, corresponding to the AASIC loss during a warm AMO phase, one finds more widespread warming over the Arctic and a reduced snowpack over Northern Eurasia in December. The stratosphere‐troposphere coupling is suppressed in early winter and no negative AO anomaly is found in February. We suggest that the cold AMO phase is important to regulate the atmospheric response to AASIC decline, and our study provides insight to the ongoing debate on the connection between the Arctic sea ice and the AO.en_US
dc.language.isoengeng
dc.publisherAmerican Geophysical Unionen_US
dc.titleAtlantic Multidecadal Oscillation modulates the impacts of Arctic sea ice declineen_US
dc.typePeer reviewed
dc.typeJournal article
dc.date.updated2018-03-22T12:37:18Z
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2018. American Geophysical Union. All Rights Reserveden_US
dc.identifier.doihttps://doi.org/10.1002/2017gl076210
dc.identifier.cristin1575012
dc.source.journalGeophysical Research Letters
dc.relation.projectNorges forskningsråd: 244166
dc.relation.projectNorges forskningsråd: 229774


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