Raw and post-processed precipitations were collected using a Thies Clima laser precipitation gauge. The instrument was mounted on the railing of the deck atop the bridge of the CCGS Amundsen. It should be noted that there was no good location to install the instrument, and wind eddies may have influenced the data.

The Canadian research icebreaker CCGS Amundsen is equipped with an underway ThermoSalinoGraph (TSG) system, which continuously records surface seawater temperature, salinity, fluorescence and sound velocity along the transit route. Quality Assurance/Quality Control (QAQC) data are available for the summer periods between 2005 and 2020, except in 2007, 2008 and 2012 where the system was faulty or the ship was in maintenance. The TSG data were corrected and controlled by comparing them to CTD-Rosette data and in situ measures when available. Outliers and suspicious measurements were removed from the dataset. Variables are provided every 7 minutes. Research programs participating in the Amundsen expeditions between 2005 and 2020 include, ArcticNet, CFL, Geotraces, Malina, IOL and BP, BREA, Weston, Netcare, JAMSTEC, Statoil and iBO, GreenEdge, BAYSYS, Sentinel Nord (BriGHT, BOND), DFO ROV vulnerable marine ecosystem, and the Kitikmeot marine Ecosystem.

The CCGS Amundsen is equipped with a RDI ADCP Ocean Surveyor (RDI os150), a ship-mounted current meter attached to the hull of the ship. The ship is also equipped of ice windows to protect the system while sailing through harsh arctic conditions. The current meter records continuous measures of the current along the ship transit route using a 150KHz sonar capable of covering the first 450m of the arctic water column. Since 2015 data are controlled using the Common Oceanographic Data Access System (CODAS, https://currents.soest.hawaii.edu/home/software/) of the University of Hawai'i, also adopted by the NOAA-National Centers for Environmental Information (NOAA-NCEI) to create the Joint Archive for Shipboard ADCP. Data are provided in NetCDF formats and follow the COARD (Cooperative Ocean/Atmosphere Research Data) convention. Detailed information and metadata are available in the documentation of the archive and in-built metadata files. Raw data since 2004 are available on demand.