15 Aug 2023
 | 15 Aug 2023
Status: this preprint is currently under review for the journal ESSD.

Oceanographic dataset collected during the 2021 scientific expedition of the Canadian Coast Guard Ship Amundsen

Tahiana Ratsimbazafy, Thibaud Dezutter, Amélie Desmarais, Daniel Amirault, Pascal Guillot, and Simon Morisset

Abstract. Since 2003, the state-of-the-art Canadian Coast Guard Ship (CCGS) research icebreaker Amundsen furrows the Canadian Arctic waters to support novel research endeavors and collect oceanographic data. This paper presents the data acquisition, the processing methods and an overview of the data collected during the 2021 expedition as the ship traveled over 30 000 km during 122 days across the Canadian Arctic Ocean, collecting sea surface, atmospheric and seabed underway measurements. A total of 266 casts of a conductivity, temperature and depth profiler mounted on a rosette (CTD-Rosette) were also conducted to monitor the main physical, chemical and biological parameters of the water column. More specifically, the data here presented were collected with the CTD-Rosette across historical sampling transects in Davis Strait, the NorthWater Polynya (NOW), and Cape Bathurst. A 182 km dedicated survey of Moving Vessel Profiler (MVP), equipped with CTD, transmissometer, dissolved oxygen, fluorescence, sound velocity sensors, was conducted across Hudson Strait. We also present an overview of the data collected by the underway systems (seabed, thermosalinograph and atmospheric). Such data are essential in understanding the impacts of climate warming on the unique environments of the Canadian Arctic Ocean. Amundsen Science supports and promotes easy access and sharing of such valuable data to the scientific community.

Tahiana Ratsimbazafy et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2023-204', Anonymous Referee #1, 12 Sep 2023
    • AC2: 'Reply on RC1', Tahiana Ratsimbazafy, 29 Sep 2023
  • RC2: 'Comment on essd-2023-204', Paola Picco, 12 Sep 2023
    • AC1: 'Reply on RC2', Tahiana Ratsimbazafy, 21 Sep 2023

Tahiana Ratsimbazafy et al.

Data sets

CTD data collected by the CCGS Amundsen in the Canadian Arctic Amundsen Science

Tahiana Ratsimbazafy et al.


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Short summary
The Canadian Coast Guard Ship collects oceanographic data across the Canadian Arctic annually since the year 2003. Such activity aims to support Canadian and international researchers. The ship has several instruments with cutting-edge technology available for research each year during the summer. The data presented here includes measurements of physical, chemical, and biological variables during the year 2021. All datasets outputted from each expedition are free for access for the public.