Please consider attending the IGS Sea Ice Symposium on Sea Ice at the
Interface in Winnipeg, Canada August 18-23 2019. Abstracts will be
accepted until March 20 at https://www.igsoc.org/symposia/2019/winnipeg.
We draw your attention to the sea ice dynamics sessions. This is a
rare opportunity to come together as a community. With increasing
interest and funded programs in the field of sea ice dynamics the time
is ripe for us to share our progress.
Please consider submitting your abstracts to the Sea Ice Dynamics
sessions I and II, processes and observations respectively. If your
abstract fits both sessions, you can choose one as primary and one as
secondary and we will make sure you are scheduled with other
presentations that compliment your work.
Best regards,
Petra Heil, Chris Polashenski, Jenny Hutchings, Andy Mahoney, Ruibo Lei,
Polona Itkin and Arnold Song
Sea Ice Dynamics (I): Processes
Sea ice mechanical and dynamical processes are key factors in evolving
ice conditions. Export of ice from the Arctic and dynamic thickening
both contribute substantially to mass balance change. Ridging and
fracture processes have a significant impact on safety and efficiency of
maritime operations. Drift and deformation processes are governed by the
balance of forces being applied to the ice and the ability of the ice to
relieve stresses through motion or deformation. Observations show that
the sea ice cover has become more mobile in recent years and may
simultaneously be experiencing greater deformation. Traditional
continuum representations of sea ice dynamics in large scale models may
not represent observed deformation of sea ice. These models have not
being designed for an ice pack that has multiple dynamic regimes
controlled by differing ice mechanics or anisotropic behavior. We invite
submissions to a session that will encompass all processes of sea ice
dynamics, including momentum transfer from air and water to the ice and
mechanical and dynamical processes governing transmission and release of
stress. We encourage submissions of observational findings and using any
approach to modeling sea ice kinematics and mechanics. We challenge
submissions to present paths toward improving predictions of ice motion
and deformation through new knowledge or new model parameterization
developments.
Sea Ice Dynamics (II): Observations
Sea ice is highly dynamic due to forcing from atmosphere, ocean
currents, tides or surface waves, and its interaction with glacial or
continental margins. Spatio-temporal variability in ice motion induces
shear and deformation. Changing climate enhances especially the
atmospheric forcing on the sea ice via warming and increased cyclonicity
coupled with deeper central pressure. Oceanic forcing strengthens due to
deepening and warming of the mixed layer and increased wave action.
Consequent sea-ice adaption includes significant thinning, reduced ice
extent and concentration. Sea-ice loss provides feedback to the ice
dynamics via strengthened sea-ice deformation and wave-ice interaction,
in turn affecting the ice-thickness redistribution. To better understand
these linkages and to gauge the fate of sea ice, targeted observations
are urgently required. YOPP observations and the imminent MOSAiC
experiment will provide extensive in situ data. The recently launched
ICESat-2 and other new and existing satellite-missions will provide
invaluable information to unravel sea-ice dynamics across scales and
deliver process understanding to improve numerical sea-ice
parameterizations. We welcome submissions from observational and
field-based studies of sea-ice dynamics, ice-pack properties, and
interaction with the ocean and atmosphere including those based on in
situ, remote sensing, and those linked to modeling studies, including
numerical assimilation.
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