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GEOTRACES Arctic Cruise Planning Meeting 8-10 June 2009 Delmenhorst, Germany 35 geochemists from

GEOTRACES Arctic Cruise Planning Meeting 8-10 June 2009 Delmenhorst, Germany 35 geochemists from Canada, China, European Union, Russia and USA. Funding:. COST 14 MC/WG members Experts COST countries Experts non-COST countries Conference costs US GEOTRACES 8 participants US

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GEOTRACES Arctic Cruise Planning Meeting 8-10 June 2009 Delmenhorst, Germany 35 geochemists from

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

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

  3. 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

  4. 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

  5. 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 • 4 : Exchange with Atlantic and Pacific • Inputs and outputs at the choke points

  6. Breakout groups 2: Sections and Process Studies 1 : Choke points and Nordic Seas 2 : Rivers and shelves 3: Deep basins and hydrothermal input

  7. 1.Choke points/ Gateways

  8. Bering Strait 1.Choke points Link with existing hydrographic programs Russian-US mooring (v, T,S) exists Proposed sections

  9. Fram Strait 1.Choke points Link with existing hydrographic programs

  10. Davis Strait 1.Choke points Link with existing hydrographic programs

  11. Norway-Bear Island-Spitzbergen 1.Choke points Link with existing hydrographic programs

  12. Greenland-Iceland-Faroe-Shetland sections and moorings 1.Choke points Link with existing hydrographic programs

  13. Canada3Oceans 1.Choke points Link with existing hydrographic programs

  14. 2. Rivers and Shelves Mackenzie Lena Laptev Sea – Lena delta Laptev/ East Siberian shelf Mackenzie delta

  15. Deep basins: Make use of historical sections Deep basins

  16. Central Arctic Deep basins

  17. Hydrothermal activity on Gakkel Ridge Deep basins

  18. Summary Choke points Exchange Deep water formation (NADW source) Rivers Shelves deep basins Process studies Hydrothermal inputs

  19. Jan 2010: Map adjusted for GEOTRACES website IPY Recommended future tracks

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