CCGS Amundsen ArcticNet1502 (ArcticNet, GN02)

Cruise summary report

Cruise Info. 
Ship name (ship code)CCGS Amundsen (18DL)
Cruise identifierArcticNet1502 (ArcticNet, GN02)
Cruise period2015-07-10 — 2015-08-20
Port of departureQuebec, Canada
Port of returnKugluktuk, Canada
ObjectivesLeg 2 of the 2015 CCGS Amundsen expedition was shared between ArcticNet and the Canadian Arctic GEOTRACES project: "A biogeochemical and tracer study of a rapidly changing Arctic Ocean". As part of the international GEOTRACES program, the principal mandate of the Canadian Arctic GEOTRACES project was the study input, removal and cycling of trace elements and isotopes in the water column, and to use this information to document, monitor, and predict the evolution of physical and biogeochemical processes in the Arctic Ocean. The project also included extensive biological and trace gases components of direct relevance to the long-term goals of ArcticNet, which facilitated coordination of sampling for both programs.

Sampling operations consisted of:
- seawater sampling with ArcticNet's 24 x 12 L rosette - CTD (Niskin-type bottles)
- seawater sampling under trace metal clean conditions with GEOTRACES' 12 x 12 L rosette - CTD (Go-Flo bottles)
- particle sampling with 6 McLane large volume in-situ pumps
- zooplankton and fish sampling with a Net Vertical Sampler (NVS), a Double Square Net (DSN), a Isaac-Kidd Midwater Trawl (IKMT), a Hydrobios, and a Benthic Beam Trawl
- aerosol sampling with a volumetric flow controlled high volume sampler
- underway trace gas analysis with a Membrane Inlet Mass Spectrometer (MIMS) and a Gas Chromatograph (GC)
Additional planned activities included:
- incubations for productivity measurements with different isotopic tracers
- ocean acidification experiments
- sea ice melt pond sampling
- Argo floats deployments
- river sampling
- seafloor mapping with a multibeam sonar and a CHIRP sub-bottom profiler
- mooring deployment in Queen Maud Gulf
Chief scientistRoger Francois (University of British Columbia Department of Earth and Ocean Sciences)
ProjectGEOTRACES -Trace elements and their isotopes in the water column
Cruise reportCCGS Amundsen ArcticNet1502 (ArcticNet, GN02) cruise report amundsen_1502.pdf (4.46 MB) 
Ocean/sea areas 
GeneralThe Northwestern Passages
Labrador Sea (Davis Strait)
SpecificCanadian Arctic
Data held at BODC 
Discrete samples 
67  CTD frame plus rosette sampler