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Floating microplastics in Frobisher Bay were assessed using a surface trawl. Four replicate tows of a Manta surface trawl with 200 micron mesh were carried out at each of two sites in Frobisher Bay from CCGS Amundsen. Four tows near the city of Iqaluit measured microplastics contamination close to that city, likely of local origin. Four tows in outer Frobisher Bay, spread over a wider distance, measured microplastics contamination from the northern Labrador Sea or from ships traversing Frobisher Bay. Samples were frozen following collection, for later processing.
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The CTD data was obtained during the 2009 Malina scientific cruise #0902 as part of the ArcticNet program. The data were collected from July 31 to August 24, 2009, aboard the CCGS Amundsen. There were 167 casts associated to 52 stations, located in the Beaufort Sea research area. The following parameters were measured: temperature, conductivity and pressure (with a Sea-Bird SBE-9plus), dissolved oxygen (Sea-Bird SBE-43), fluorescence (Seapoint chlorophyll fluorometer), CDOM (Haardt backscat fluorometer FL(RT)D), nitrate concentration (Satlantic MBARI-ISUS 5T), transmittance (Wetlabs C-Star transmissometer), currents (RDI LADCP), turbidity (UVP 5), light intensity (PAR; Biospherical Instruments QCP2300) and surface light intensity (sPAR; Biospherical Instruments QCP2200). Quality control procedures were applied to the data. Data are available on the Polar Data Catalogue and at the Marine Environmental Data Service (MEDS) of Fisheries and Oceans Canada.
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During the 2007-2008 CFL IPY Project, the research icebreaker CCGS Amundsen overwintered in the South Beaufort Sea/Amundsen Gulf flaw lead system. The purpose of this experiment was to comprehensively study the flaw lead system through an entire annual cycle. As part of this project, the following radiation variables were recorded at 1 minute intervals (instrument used to collect each variable is in parentheses): -Incoming shortwave radiation (Eppley pyranometer, model PSP) -Incoming longwave radiation (Eppley pyrgeometer, model PIR) -Incoming photosynthetically active radiation (Kipp & Zonen, PARlite) -Incoming UV-A radiation (Kipp & Zonen, UVS-AB-T) - available after April 4, 2008 -Incoming UV-B radiation (Kipp & Zonen, UVS-AB-T) - available after April 4, 2008 All instruments were mounted on a platform on the wheelhouse of the CCGS Amundsen.
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