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Difference between revisions of "Drift ice"
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Temperatures in the atmosphere and Southern Ocean have increased during the period 1979–2004. However, sea ice grows faster than it melts, because of a weakly stratified Ocean. Thus, this mechanism is responsible for an increase in the net ice production, contributing to more sea ice. The sea ice volume increase presents about half the size of the increased freshwater supply from the Antarctic ice sheets. Modelling suggests that observed ice-drift toward the coastal regions are responsible for dynamical thickening during autumn and winter. | Temperatures in the atmosphere and Southern Ocean have increased during the period 1979–2004. However, sea ice grows faster than it melts, because of a weakly stratified Ocean. Thus, this mechanism is responsible for an increase in the net ice production, contributing to more sea ice. The sea ice volume increase presents about half the size of the increased freshwater supply from the Antarctic ice sheets. Modelling suggests that observed ice-drift toward the coastal regions are responsible for dynamical thickening during autumn and winter. | ||
A study published in 2015 found that the subsurface ocean warming of [[ice shelf|ice-shelves]] increased freshwater runoff simulated by models, due to basal melt, and was responsible for an increase of sea ice in the winter months. | A study published in 2015 found that the subsurface ocean warming of [[ice-shelf|ice-shelves]] increased freshwater runoff simulated by models, due to basal melt, and was responsible for an increase of sea ice in the winter months. | ||
Monitoring these changes is important as this impacts the [[psychrophiles]] that live here. | Monitoring these changes is important as this impacts the [[psychrophiles]] that live here. | ||