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Arctic Geomicrobiology and Climate Change

General

Project start
01.09.2016
Project end
08.09.2016
Type of project
Research
Project theme
Sea ice
Project topic
Climate research

Fieldwork / Study

Fieldwork country
Canada
Fieldwork region
Baffin Bay
Fieldwork location

Geolocation is 69.097849817289, -63.720703125

Fieldwork start
01.09.2016
Fieldwork end
08.09.2016

Project details

24.09.2018
Science / project plan

This project is motivated by the need to measure and understand the effects of sea ice and its snow cover on vertical transport between the Arctic Ocean and atmosphere. Salty liquid brine, a basic constituent of all sea ice whose chemical and physical properties vary greatly in time and space is now thought to drive processes controlling chemical contaminant pathways and greenhouse gas exchange in polar seas. For example, during winter sea ice growth, calcium carbonate may form in sea ice, releasing carbon dioxide (CO2) that dissolves in liquid brine. Brine and its dissolved CO2 are variably rejected from growing sea ice, potentially descending into the deep ocean sequestering CO2 from the atmosphere. Novel results will be realized through small-scale cold lab experiments, ice tank experiments at the Sea ice Experimental Research Facility (SERF) at the University of Manitoba, and in situ field studies. Determination of the amount, timing and fate of brine rejected from sea ice at its lower and upper surfaces is paramount to making sure these globally important processes occurring at very small scales are properly accounted for in climate models used to advise the formation or change of policies.

Link to ArcticNet webpage.

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