GEOTRACES Arctic Cruise Planning Meeting

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GEOTRACES Arctic Cruise Planning Meeting 8-10
June 2009 Delmenhorst, Germany 35 geochemists
from Canada, China, European Union, Russia and
USA
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Funding

• COST
• 14 MC/WG members
• Experts COST countries
• Experts non-COST countries
• Conference costs
• US GEOTRACES
• 8 participants US
• SCOR
• 4 participants
• HWK

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Introductory presentations
Ursula Schauer Alfred-Wegener Institute for polar
and marine research, Germany Warming and
freshening of the Arctic Ocean in the
2000s Peter Schlosser Lamont-Doherty Earth
Observatory, USA Circulation patterns, mean
residence times and freshwater components in the
Arctic Ocean John Smith Bedford Institute of
Oceanography, Canada Applications of Radionuclide
Tracers to Process Studies in the Arctic
Ocean Leif Anderson Dept of chemistry, Göteborg
University, Sweden The Arctic Ocean Carbon Cycle
in a Changing Environment
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Overview of past IPY expeditions Cruise Planning
and long term ship schedules Advocacy
talks Lars-Eric Heimbürger Mercury in the
Arctic Ala Aldahan Iodine as a geotracer David
Kadko Be-7 measurements in the Arctic Billy
Moore Marine Groundwater Discharge Mark
Baskaran Interaction of ice-rafted sediments
and surface seawater using short-
long-lived nuclide tracers Bill Landing
(poster) Aerosol and Rainfall Sampling and
Analysis for GEOTRACES
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• Breakout groups 1 Scientific Questions
• 1 Sea ice
• Inputs of TEI in sea ice
• Transport of TEI by sea ice
• Role of sea ice algae in TEI cycling
• Role of sea ice in TEI cycling in central Arctic
• 2 Rivers and shelves
• Riverine inputs to the Arctic
• Groundwater inputs to Arctic shelves
• Shelf processes
• Dense brine formation
• 3 Aerosols and atmospheric deposition
• Seasonality and trends of fluxes
• What are the source regions
• Effects of atmospheric deposition on water column

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Breakout groups 2 Sections and Process
Studies 1  Choke points and Nordic Seas 2 
Rivers and shelves 3 Deep basins and
hydrothermal input
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1.Choke points/ Gateways
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Bering Strait
1.Choke points
Link with existing hydrographic programs
Russian-US mooring (v, T,S) exists
Proposed sections
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Fram Strait
1.Choke points
Link with existing hydrographic programs
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Davis Strait
1.Choke points
Link with existing hydrographic programs
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Norway-Bear Island-Spitzbergen
1.Choke points
Link with existing hydrographic programs
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Greenland-Iceland-Faroe-Shetland sections and
moorings
1.Choke points
Link with existing hydrographic programs
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Canada3Oceans
1.Choke points
Link with existing hydrographic programs
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2. Rivers and Shelves
Laptev Sea Lena delta
Laptev/ East Siberian shelf
Mackenzie delta
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Deep basins Make use of historical sections
Deep basins
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Central Arctic
Deep basins
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Hydrothermal activity on Gakkel Ridge
Deep basins
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Summary
Choke points Exchange
Deep water formation (NADW source)
Rivers Shelves
deep basins
Process studies
Hydrothermal inputs
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Jan 2010 Map adjusted for GEOTRACES website