Sea Ice

Boxplots showing how well model forecasts capture the observations between the two winter seasons, 2016–17 minus 2015–16
September 27, 2018

California precipitation is well forecast when the Arctic Oscillation phase is correctly captured by a state-of-the-art forecast system, GloSea5.

Schematic representation of proposed dynamical mechanisms in summer
September 13, 2018

Researchers conduct a comprehensive review of research on summer weather stalling, focusing on the influence of Arctic amplification and how it could interact with other factors influenced by climate change.

Response in wintertime surface air temperature and surface wind to imposed RCP8.5 sea ice loss over the Barents-Kara sea
August 13, 2018

A new Arctic and mid-latitude interaction study highlights the necessity to use stratosphere-resolving models when identifying the warm Arctic–cold Siberia pattern.

sensible heat and evaporation fluxes in the Arctic Ocean
April 19, 2018

Researchers conclude that changes in sensible heat transfer and evaporation fluxes — in response to strong regional trends in sea ice cover — are becoming increasingly consequential to Arctic climate variability and change. 

Sensitivity of the zonal winds in the Arctic
January 4, 2018

New research shows that regional Arctic temperature swings can influence jet stream positions and speeds but only account for a small fraction of the jet variations, implying other factors are crucial for predicting jet stream behavior. 

A Southern Ocean polynya
November 2, 2017

Researchers observed a natural, regular, multidecadal oscillation between periods of Southern Ocean open-sea convection, which can act a release valve for the ocean’s heat, and non-convective periods.

https://usclivar.org/research-highlights/understanding-effect-arctic-sea-ice-decline-atlantic-meridional-overturning
September 18, 2017

The Arctic sea ice decline may explain the suggested slow-down of the Atlantic meridional overturning circulation and the persistence of the Warming Hole.

Differences between preindustrial (left) and LGM (right) ocean circulation
July 26, 2017

A recent study investigates the drivers of changes in deep ocean circulation across a range of modern and Last Glacial Maximum (~21000 years ago) climate modeling simulations, revealing biases in Antarctic sea ice formation. 

Prediction uncertainty associated with model simulations of an ice-free Arctic
August 29, 2016

New research focused on determining how well the occurrence of an ice-free Arctic can be predicted. What the researchers found is that the uncertainty for the prediction of an ice-free Arctic, caused by internal climate variability, amounts to around two decades.

Sea ice thickness
July 13, 2016

Recent trends in sea ice have been studied heavily. A less well-understood problem is how sea ice affects the underlying ocean, particularly the poorly observed Southern Ocean. A new study, published in the journal Nature Geoscience, shows how the seasonal drift of Antarctic sea ice may be more important for the global ocean overturning circulation than previously realized.

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