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Preprints
https://doi.org/10.5194/essd-2020-255
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-2020-255
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  17 Oct 2020

17 Oct 2020

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This preprint is currently under review for the journal ESSD.

Wind, waves, and surface currents in the Southern Ocean: Observations from the Antarctic Circumnavigation Expedition

Marzieh H. Derkani1, Alberto Alberello2,3, Filippo Nelli1, Luke G. Bennetts3, Katrin G. Hessner4, Keith MacHutchon5, Konny Reichert6, Lotfi Aouf7, Salman Saeed Khan8, and Alessandro Toffoli1 Marzieh H. Derkani et al.
  • 1Department of Infrastructure Engineering, The University of Melbourne, 3010, Melbourne, VIC, Australia
  • 2Department of Physics, University of Turin, 10125, Turin, Italy
  • 3School of Mathematical Sciences, University of Adelaide, 5005, Adelaide, SA, Australia
  • 4OceanWaveS GmbH, 21339 Lüneburg, Germany
  • 5Depertment of Civil Engineering, University of Cape Town, 7701, Cape Town, South Africa
  • 6Independent Scholar, 6021 Wellington, New Zealand
  • 7Météo-France, 31100, Toulouse, France
  • 8Oceans and Atmosphere, Commonwealth Scientific and Industrial Research Organisation, 3195, Aspendale, VIC, Australia

Abstract. The Southern Ocean has a profound impact on the Earth's climate system. Its strong winds, intense currents, and fierce waves are critical components of the air-sea interface and contribute to absorbing, storing, and releasing heat, moisture, gasses, and momentum. Owing to its remoteness and harsh environment, this region is significantly under sampled, hampering the validation of prediction models and large scale observations from satellite sensors. Here, an unprecedented data set of simultaneous observations of winds, surface currents, and ocean waves is presented, to address the scarcity of in situ observations in the region – https://doi.org/10.26179/5ed0a30aaf764 (Alberello et al., 2020c), and https://doi.org/10.26179/5e9d038c396f2 (Derkani et al., 2020). Records were acquired underway during the Antarctic Circumnavigation Expedition (ACE), which went around the Southern Ocean from December 2016 to March 2017 (Austral summer). Observations were obtained with the wave and surface current monitoring system WaMoS-II, which scanned the ocean surface around the vessel using marine radars. Measurements were assessed for quality control and compared against available satellite observations. The data set is the most extensive and comprehensive collection of observations of surface process for the Southern Ocean and has the potential to support further theoretical and numerical research on lower atmosphere, air-sea interface and upper ocean processes.

Marzieh H. Derkani et al.

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Marzieh H. Derkani et al.

Data sets

Antarctic Circumnavigation Expedition 2016-2017: WAMOS data, Ver. 3, Australian Antarctic Data Centre A. Alberello, L. Bennetts, A. Toffoli, and M. H. Derkani https://doi.org/10.26179/5ed0a30aaf764

Antarctic Circumnavigation Expedition 2017: WAMOS data product, Ver. 1, Australian Antarctic Data Centre M. Derkani, A. Alberello, and A. Toffoli, https://doi.org/10.26179/5e9d038c396f2

Marzieh H. Derkani et al.

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Short summary
The Southern Ocean has a profound impact on the Earth's climate system. Its strong winds, intense currents, and fierce waves are critical components of the air-sea interface. Nevertheless, the scarcity of field observations in this remote region hampers the accuracy of satellite sensors and prediction models. To address this issue, a unique data set of sea state parameters, comprising simultaneous observations of winds, surface currents, and ocean waves in the Southern Ocean is presented.
The Southern Ocean has a profound impact on the Earth's climate system. Its strong winds,...
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