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dc.contributor.authorNab, Carmen
dc.contributor.authorMallett, Robbie
dc.contributor.authorGregory, William
dc.contributor.authorLandy, Jack Christopher
dc.contributor.authorLawrence, Isobel
dc.contributor.authorWillatt, Rosemary
dc.contributor.authorStroeve, Julienne
dc.contributor.authorTsamados, Michel
dc.date.accessioned2023-09-01T07:34:46Z
dc.date.available2023-09-01T07:34:46Z
dc.date.issued2023-01-09
dc.description.abstractSatellite observations of sea ice freeboard are integral to the estimation of sea ice thickness. It is commonly assumed that radar pulses from satellite-mounted Ku-band altimeters penetrate through the snow and reflect from the snow-ice interface. We would therefore expect a negative correlation between snow accumulation and radar freeboard measurements, as increased snow loading weighs the ice floe down. In this study we produce daily resolution radar freeboard products from the CryoSat-2 and Sentinel-3 altimeters via a recently developed optimal interpolation scheme. We find statistically significant (p < 0.05) positive correlations between radar freeboard anomalies and modeled snow accumulation. This suggests that, in the period after snowfall, radar pulses are not scattering from the snow-ice interface as commonly assumed. Our results offer satellite-based evidence of winter Ku-band radar scattering above the snow-ice interface, violating a key assumption in sea ice thickness retrievals.en_US
dc.identifier.citationNab, Mallett, Gregory, Landy, Lawrence, Willatt, Stroeve, Tsamados. Synoptic Variability in Satellite Altimeter-Derived Radar Freeboard of Arctic Sea Ice. Geophysical Research Letters. 2023;50(2)en_US
dc.identifier.cristinIDFRIDAID 2150919
dc.identifier.doi10.1029/2022GL100696
dc.identifier.issn0094-8276
dc.identifier.issn1944-8007
dc.identifier.urihttps://hdl.handle.net/10037/30604
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalGeophysical Research Letters
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 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.titleSynoptic Variability in Satellite Altimeter-Derived Radar Freeboard of Arctic Sea Iceen_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)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)