Results 11 to 20 of about 878,327 (287)
Geophysical Research Letters, 2020 AbstractWe examine CMIP6 simulations of Arctic sea‐ice area and volume. We find that CMIP6 models produce a wide spread of mean Arctic sea‐ice area, capturing the observational estimate within the multimodel ensemble spread. The CMIP6 multimodel ensemble mean provides a more realistic estimate of the sensitivity of September Arctic sea‐ice area to a ...
Notz, Dirk +29 more
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Recent observations of superimposed ice and snow ice on sea ice in the northwestern Weddell Sea [PDF]
The Cryosphere, 2021 Abstract. Recent low summer sea ice extent in the Weddell Sea raises questions about the contributions of dynamic and thermodynamic atmospheric and oceanic energy fluxes. The roles of snow, superimposed ice, and snow ice are particularly intriguing, as they are sensitive indicators for changes in atmospheric forcing, and as they could trigger snow ...
Stefanie Arndt +4 more
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Summertime sea-ice prediction in the Weddell Sea improved by sea-ice thickness initialization [PDF]
Scientific Reports, 2021 AbstractSkillful sea-ice prediction in the Antarctic Ocean remains a big challenge due to paucity of sea-ice observations and insufficient representation of sea-ice processes in climate models. Using a coupled general circulation model, this study demonstrates skillful prediction of the summertime sea-ice concentration (SIC) in the Weddell Sea with ...
Simona Masina +4 more
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Sea Ice Properties in High‐Resolution Sea Ice Models [PDF]
Journal of Geophysical Research: Oceans, 2021 AbstractAn Arctic sea ice‐ocean model is run with three uniform horizontal resolutions (6, 4, and 2 km) and identical sea ice and ocean model parameterizations, including an isotropic viscous‐plastic sea ice rheology, a mechanical ice strength parameterization, and an ice ridging parameterization. Driven by the same atmospheric forcing, the three model
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How Sea Ice Drift Influences Sea Ice Area and Volume [PDF]
Geophysical Research Letters, 2021 AbstractEquatorward sea ice drift can have competing impacts on the sea ice cover. On one hand, as ice reaches warmer waters it will be subject to faster melt. On the other hand, the ice near the pole will thin, causing faster ice growth when air temperatures are below freezing.
Hassan C Mason +4 more
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Ice platelets below Weddell Sea landfast sea ice [PDF]
Annals of Glaciology, 2015 AbstractBasal melt of ice shelves may lead to an accumulation of disc-shaped ice platelets underneath nearby sea ice, to form a sub-ice platelet layer. Here we present the seasonal cycle of sea ice attached to the Ekström Ice Shelf, Antarctica, and the underlying platelet layer in 2012. Ice platelets emerged from the cavity and interacted with the fast-
Hoppmann, Mario +11 more
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Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2018 Static and kinetic friction play a fundamental role in sea-ice mechanics. The coefficient of static friction increases with hold time under normal load and is modelled in terms of creep and fracture of asperities in contact. The coefficient of kinetic friction exhibits velocity strengthening at lower speeds and velocity weakening at intermediate speeds.
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Fracture networks in sea ice [PDF]
Frontiers in Physics, 2014 Fracturing and refreezing of sea ice in the Kara sea are investigated using complex networkanalysis. By going to the dual network, where the fractures are nodes and their intersectionslinks, we gain access to topological features which are easy to measure and hence comparewith modeled networks.
Jonas Nesland Vevatne +5 more
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