Aarhus University Seal / Aarhus Universitets segl

The function of a polynia. Deployment of moorings in Young Sund, NE Greenland

2014.03.03 | Egon Randa Frandsen

Date Tue 29 Apr Thu 12 Jun
Time 00:00    00:00
Location Daneborg, NE Greenland

The scientific project aim is to understand how brine expelled from growing sea ice affects ocean circulation and transport of solutes and gases across the mixed layer. The project seeks to answer the following scientific questions based on laboratory experiments, numerical model tools and measurement campaigns.

  • How is brine expelled from growing sea ice affecting circulation near the sea ice – ocean interface?
  • How deep does the brine go and what is the significance for CO2 transport?
  • Does it cross the mixed layer and what are the possible interactions?
  • Are the physics of brine expulsion and ocean circulation the same under new ice, first year ice and multiyear ice, and if not, how do they differ?

In order to achieve data on this, we will deploy various equipment into the ice beneath and close to a Polynya in October to provide continuous measurements below sea ice during the winter. In the spring (May or June) we will collect the equipment again and load all data during the combined ASP field campaign to Young Sund.

PI: Søren Rysgaard

Arctic Research Centre, Environment, climate and energy