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Sea ice and methane
Published 2020“…1) The annual cycle of atmospheric methane in southern high latitudes is extremely highly correlated with Antarctic sea ice extent. 2) The annual cycle of atmospheric methane in the Arctic is highly correlated with Antarctic or Arctic plus Antarctic sea ice extent. 3) We propose the global annual cycle of atmospheric methane is largely driven by Antarctic sea ice dynamics, with relatively stronger influence from other fluxes (probably the biota) in the Northern Hemisphere. 4) We propose degassing during sea ice freeze and temperature dependent solubility in the ocean dominate the annual methane cycle. 5) Results provide evidence that carbon cycle pathways, parameters and predictions must be reassessed.…”
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Sea ice and argon
Published 2022“…1) Atmospheric argon on Earth and Mars cycles on a seasonal basis and abiotic factors will be particularly important drivers of this noble gas. 2) It is predicted and confirmed that there is similarity in the seasonality of sea ice and argon, with atmospheric argon in a Hemisphere often increasing fastest when sea ice in that Hemisphere is declining fastest. 3) There is some visual similarity between the detailed phenology of Greenland Sea ice extent and argon in some Northern Hemisphere sites, but formal analysis is required. 4) If causal, the mechanism is unclear but could involve argon bubble formation during freezing and bubble release in the spring melt. 5) Other variables with very similar phenology to sea ice, including high-latitude sea temperatures, should be investigated as potential drivers. 6) Cycling of argon by sea ice would strengthen the argument that seasonal cycling of carbon dioxide is in part driven abiotically.…”
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Sea ice and oxygen
Published 2022“…</p> <p><strong>4)</strong> I test and confirm the prediction that seasonal sea ice and oxygen rates are highly coherent at high latitudes, with peak oxygen emission in months of peak rates of sea ice loss within each Hemisphere. …”
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Assessment of contemporary satellite sea ice thickness products for Arctic sea ice
Published 2019-04-01“…<p>Advances in remote sensing of sea ice over the past two decades have resulted in a wide variety of satellite-derived sea ice thickness data products becoming publicly available. …”
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Potential sea ice predictability and the role of stochastic sea ice strength perturbations
Published 2014“…The regions where initial condition uncertainty generates spread in sea ice thickness on subseasonal time scales (primarily along the ice edge) differ from that of the stochastic sea ice strength parameterization (along the coast lines and in the interior of the Arctic). …”
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An ocean-sea ice model study of the unprecedented Antarctic sea ice minimum in 2016
Published 2018-01-01Subjects: “…Antarctic sea ice…”
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Simulating Sea‐Ice Deformation in Viscous‐Plastic Sea‐Ice Models With CD‐Grids
Published 2023-08-01Subjects: “…sea‐ice dynamics…”
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Decadal Sea Ice Prediction in the West Antarctic Seas with Ocean and Sea Ice Initializations
Published 2022-09-01“…Decadal sea ice variability in the west Antarctic seas can be skillfully predicted, with highest skill in a decadal reforecast experiment where sea surface temperature, sea ice concentration and subsurface ocean temperature and salinity are initialized from observations.…”
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Better constraints on the sea-ice state using global sea-ice data assimilation
Published 2012-12-01“…However, only sea-ice concentration and velocity data are currently assimilated. …”
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Sea ice and carbon dioxide
Published 2020“…1) The annual cycles of atmospheric CO₂ at Mauna Loa and Point Barrow (Alaska) are statistically almost completely explained by changes in Arctic sea ice volume and extent. 2) The annual cycles of atmospheric CO₂ at the South Pole and at Palmer Station are statistically largely explained by changes in Antarctic sea ice extent. 3) Results are consistent with a monthly CO₂ flux dependent on the distance from equilibrium of a temperature dependent process. …”
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Variability modes of September Arctic sea ice: drivers and their contributions to sea ice trend and extremes
Published 2023-01-01Subjects: Get full text
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Record low Antarctic sea ice coverage indicates a new sea ice state
Published 2023-09-01“…Abstract In February 2023, Antarctic sea ice set a record minimum; there have now been three record-breaking low sea ice summers in seven years. …”
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Effects of including the adjoint sea ice rheology on estimating Arctic Ocean–sea ice state
Published 2023-03-01“…However, the accuracy of the adjoint model is degraded by simplifications of the adjoint of the sea ice model, especially the adjoint sea ice rheologies. …”
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Impacts of freshwater changes on Antarctic sea ice in an eddy-permitting sea-ice–ocean model
Published 2017-06-01“…In a warming climate, satellite data indicate that the sea ice extent around Antarctica has increased over the last decades. …”
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Influence of stochastic sea ice parametrization on climate and the role of atmosphere-sea ice-ocean interaction
Published 2014“…The influence of a stochastic sea ice strength parametrization on the mean climate is investigated in a coupled atmosphere–sea ice–ocean model. …”
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