Ideas for community engagement

Sea ice : physical world

Thickness of land fast sea ice

Rosie flying over sea ice

Fast ice vs sea ice

Platelet ice

Mosaic Arctic Expedition Ruzica Dadic

Sea ice projections

Importance of snow in sea ice projections

Albedo reflecting energy into space and into biological systems

Quantitative measurements

Salt in sea ice and migration of salt into snow

Bubbles

Different disciplines in mosaic

Sea ice biology

Phytoplankton responsible for primary production and balancing global carbon cycle

Constrain past sea ice conditions

Predict response of phytoplankton to change

Paleoclimates

Link changes with southern ocean and mid latitude climate changes

Enhanced circumpolar deep water current

Stratified water column

Rapid ice sheet retreat

Decreasing atmospheric CO2 concentrations

Warming temperatures

Platelet ice

Leads to thicker sea ice

Highly productive biological ecosystem

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Changing global thermohaline circulation
Craig Stevens NIWA

Polynyas: key area of atmospheric/ocean exchange
Argo floats starting to pe programmed to deal with ice and shallow water. Two more to be deployed along Victorialand coast.

Argo floats

Sea surface temps

Sea level rise around NZ

Christina Hulbe

Ice sheets reserves of fresh water.

Flow in ice sheets, speeds up and thins as gets closer to coast. Grounding line is boundary between sea ice and ice sheet.

Integrated systems and connecting processes grounding line retreat, microbial qualities, ocean circulation

Surface processes

Ocean cavity work

Kamb ice stream, west Antarctic ice sheet

Ice fin. work

ROV Ice fins collecting oceanographic data

Bed forms and currents

Natalie Robinson repeat profiling of water column and cod profiles

Time series telemetry

Clear stratification despite tidal mixing

Tides

Warm lower salty layer coming in to base of ice shelf and promoting melting. - : :

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Strong estuarine structure tidally dominated

Ian Hawes

University of Waikato

Sea ice biology designing ways to sample platelet ice community

Melt water pulses show different scale of sea level rise. Pulses have been recorded from Antarctica paleoreconstruction

Nancy Bertler RICE project

Motivated by sea level change