dc.contributor.author | He, Shengping | |
dc.contributor.author | Drange, Helge | |
dc.contributor.author | Furevik, Tore | |
dc.contributor.author | Wang, Hui-Jun | |
dc.contributor.author | Fan, Ke | |
dc.contributor.author | Graff, Lise Seland | |
dc.contributor.author | Orsolini, Yvan Joseph Georges Emile G. | |
dc.date.accessioned | 2024-06-27T08:30:58Z | |
dc.date.available | 2024-06-27T08:30:58Z | |
dc.date.created | 2023-09-20T13:27:47Z | |
dc.date.issued | 2023 | |
dc.identifier.citation | Advances in Atmospheric Sciences. 2024. | en_US |
dc.identifier.issn | 0256-1530 | |
dc.identifier.uri | https://hdl.handle.net/11250/3136133 | |
dc.description.abstract | To quantify the relative contributions of Arctic sea ice and unforced atmospheric internal variability to the “warm Arctic, cold East Asia” (WACE) teleconnection, this study analyses three sets of large-ensemble simulations carried out by the Norwegian Earth System Model with a coupled atmosphere–land surface model, forced by seasonal sea ice conditions from preindustrial, present-day, and future periods. Each ensemble member within the same set uses the same forcing but with small perturbations to the atmospheric initial state. Hence, the difference between the present-day (or future) ensemble mean and the preindustrial ensemble mean provides the ice-loss-induced response, while the difference of the individual members within the present-day (or future) set is the effect of atmospheric internal variability. Results indicate that both present-day and future sea ice loss can force a negative phase of the Arctic Oscillation with a WACE pattern in winter. The magnitude of ice-induced Arctic warming is over four (ten) times larger than the ice-induced East Asian cooling in the present-day (future) experiment; the latter having a magnitude that is about 30% of the observed cooling. Sea ice loss contributes about 60% (80%) to the Arctic winter warming in the present-day (future) experiment. Atmospheric internal variability can also induce a WACE pattern with comparable magnitudes between the Arctic and East Asia. Ice-loss-induced East Asian cooling can easily be masked by atmospheric internal variability effects because random atmospheric internal variability may induce a larger magnitude warming. The observed WACE pattern occurs as a result of both Arctic sea ice loss and atmospheric internal variability, with the former dominating Arctic warming and the latter dominating East Asian cooling. | en_US |
dc.language.iso | eng | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Relative impacts of sea ice loss and atmospheric internal variability on winter Arctic to East Asian surface air temperature based on large-ensemble simulations with NorESM2 | en_US |
dc.title.alternative | Relative impacts of sea ice loss and atmospheric internal variability on winter Arctic to East Asian surface air temperature based on large-ensemble simulations with NorESM2 | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.rights.holder | © The Author(s) 2024. | en_US |
dc.source.journal | Advances in Atmospheric Sciences | en_US |
dc.identifier.doi | 10.1007/s00376-023-3006-9 | |
dc.identifier.cristin | 2177099 | |
dc.relation.project | Norges forskningsråd: 328943 | en_US |
dc.relation.project | EC/H2020/727862 | en_US |
dc.relation.project | Norges forskningsråd: 325440 | en_US |
dc.relation.project | Sigma2: NN2345K | en_US |
dc.relation.project | Sigma2: NS2345K | en_US |
dc.relation.project | NILU: 121155 | en_US |
dc.relation.project | Sigma2: NS9560K | en_US |
dc.relation.project | Sigma2: NS9034K | en_US |
dc.relation.project | Sigma2: NS9252K | en_US |
cristin.ispublished | false | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |