Moving Vessel Profiling (MVP) data collected by the CCGS Amundsen in the Canadian Arctic

The Canadian research icebreaker CCGS Amundsen is equipped with a Moving Vessel Profiler (MVP), a versatile instrument designed to collect both shallow and deep water data sets without the need to halt the vessel. During transects, multiple consecutive casts of the MVP are conducted, facilitating the collection of data on the physical and chemical characteristics of the water column.

The MVP was deployed during the Amundsen scientific expeditions, spanning the summer and fall of 2004 to 2024, with the exception of 2005, 2006, and 2019. Data was unavailable for 2012 due to the ship undergoing maintenance. The system components underwent slight variations throughout the year, typically comprising a Micro CTD (Temperature, Conductivity, and Pressure), a Micro DO2 (Dissolved Oxygen), a Micro SV (Sound Velocity and Pressure), an ECOFLO (Fluorescence), and a C-Star (Transmittance) probe.

The MVP data were meticulously corrected and controlled by comparing them to CTD-Rosette and thermosalinograph (TSG) data whenever feasible. Comprehensive metadata and reports are provided to support the information presented and serve as documentation regarding the data processing methodologies.