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dc.contributor.authorHowell, Stephen E. L.
dc.contributor.authorBabb, David G.
dc.contributor.authorLandy, Jack Christopher
dc.contributor.authorGlissenaar, Isolde A.
dc.contributor.authorMcNeil, Kaitlin
dc.contributor.authorMontpetit, Benoit
dc.contributor.authorBrady, Mike
dc.date.accessioned2024-09-16T08:36:11Z
dc.date.available2024-09-16T08:36:11Z
dc.date.issued2024-05-07
dc.description.abstractThe Canadian Arctic Archipelago (CAA) serves as both a source and a sink for sea ice from the Arctic Ocean, while also exporting sea ice into Baffin Bay. We use observations from Sentinel-1, RADARSAT-2, the RADARSAT Constellation Mission (RCM), and CryoSat-2, together with the Canadian Ice Service ice charts, to quantify sea ice transport and replenishment across and within the CAA from 2016 to 2022. We also provide the first estimates of the ice area and volume flux within the CAA from the Queen Elizabeth Islands to Parry Channel, which spans the central region of the Northwest Passage shipping route. Results indicate that the CAA primarily exports ice to the Arctic Ocean and Baffin Bay, with an average annual (October to September) ice area flux of 137 ± 72 × 10<sup>3</sup> km<sup>2</sup> and a volume flux of 58 ± 68 km<sup>3</sup> . The CAA contributes a larger area but smaller volume of ice downstream to the North Atlantic than what is delivered via Nares Strait. The average annual ice area flux from the Queen Elizabeth Islands to Parry Channel was 27 ± 10 × 10<sup>3</sup> km<sup>2</sup> and the volume flux was 34 ± 12 km<sup>3</sup> , with a majority occurring through Byam Martin Channel, which is directly above the central region of Northwest Passage. Over our study period, annual multi-year ice (MYI) replenishment within the CAA was resilient, with an average of 14 ± 38 × 10<sup>3</sup> km<sup>2</sup> imported from the Arctic Ocean and an average of 56 ± 36 × 10<sup>3</sup> km<sup>2</sup> of first-year ice (FYI) retained following the melt season. The considerable ice flux to Parry Channel, together with sustained MYI replenishment, emphasizes the continued risk that sea ice poses to practical utilization of key shipping routes in the CAA, including the Northwest Passage.en_US
dc.identifier.citationHowell, Babb, Landy, Glissenaar, McNeil, Montpetit, Brady. Sea ice transport and replenishment across and within the Canadian Arctic Archipelago, 2016-2022. The Cryosphere. 2024;18(5):2321-2333en_US
dc.identifier.cristinIDFRIDAID 2272052
dc.identifier.doi10.5194/tc-18-2321-2024
dc.identifier.issn1994-0416
dc.identifier.issn1994-0424
dc.identifier.urihttps://hdl.handle.net/10037/34724
dc.language.isoengen_US
dc.publisherCopernicus Publicationsen_US
dc.relation.journalThe Cryosphere
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/ERC/101077496/EU/Arctic Summer Sea Ice in 3D/SI3D/en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2024 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleSea ice transport and replenishment across and within the Canadian Arctic Archipelago, 2016-2022en_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution 4.0 International (CC BY 4.0)