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ToolsZhou, Shenjie, Dutrieux, Pierre, Giulivi, Claudia F., Jenkins, Adrian, Silvano, Alessandro, Auckland, Christopher, Abrahamsen, E. Povl, Meredith, Michael, Vaňková, Irena, Nicholls, Keith, Davis, Peter E. D., Østerhus, Svein, Gordon, Arnold L., Zappa, Christopher J., Dotto, Tiago S., Scambos, Ted, Gunn, Kathryn L., Rintoul, Stephen R., Aoki, Shigeru, Stevens, Craig, Liu, Chengyan, Yun, Sukyoung, Kim, Tae-Wan, Lee, Won Sang, Janout, Markus, Hattermann, Tore, Lauber, Julius, Darelius, Elin, Wåhlin, Anna, Middleton, Leo, Castagno, Pasquale, Budillon, Giorgio, Heywood, Karen J., Graham, Jennifer, Dye, Stephen, Hirano, Daisuke and Miller, Una Kim (2025) The OCEAN ICE mooring compilation: A standardised, pan-Antarctic database of ocean hydrography and current time series. Earth System Science Data, 17 (10). pp. 5693-5706. ISSN 1866-3508
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Abstract
Continuous moored time series of temperature, salinity, pressure and current speed and direction are of great importance for understanding the continental shelf and under-ice-shelf dynamics and thermodynamics that govern water mass transformations and ice melting in and around Antarctic marginal seas. In these regions, icebergs and sea ice make ship-based mooring deployment and recovery challenging. Nevertheless, over decades, expeditions around the fringe of Antarctica sporadically deployed and recovered hundreds of moored instruments, including those facilitated through ice shelves boreholes. These datasets tend to be archived in a wide range of data centres, with, to our knowledge, no clear format standardisation. As a result, systematic analysis of historical mooring time series in the marginal seas is often challenging. Here we present the first version of a standardised pan-Antarctic moored hydrography and current time series compilation, with broad international contributions from data centres, research institutes and individual data owners. The mooring records in this compilation span over five decades, from the 1970s to the 2020s, providing an opportunity for a systematic study of the pan-Antarctic water mass transport and shelf connectivity. As a demonstration of the utility of this compilation, we present spectral analysis of the compiled current velocity time series, which unsurprisingly shows the dominating presence of tidal variability within most records. This component of the variability is fitted using multi-linear regression to tidal frequencies, and the tidal fit is removed from the original time series to leave de-tided variability. Given the limited record durations to months to years, de-tided variability is dominated by synoptic (3–10 d period), intraseasonal (10–80 d) and seasonal (∼6 months–1 year) signals. The spatial distribution of the kinetic energy integrated within frequency bands is presented and discussed within respective regional contexts, and future avenues of research are proposed. This data compilation is assembled under the endorsement of Ocean-Cryosphere Exchanges in ANtarctica: Impacts on Climate and the Earth System (OCEAN ICE) project (https://ocean-ice.eu/, last access: 23 October 2025) funded by the European Commission and UK Research and Innovation. It is available and regularly updated in NetCDF format with the SEANOE database at https://doi.org/10.17882/99922 (Zhou et al., 2024a).
| Item Type: | Article |
|---|---|
| Additional Information: | Data availability: The OCEAN ICE mooring compilation is published on SEANOE Data Repository with the doi link, https://doi.org/10.17882/99922 (Zhou et al., 2024a). The data publication contains two files: a compressed file (2.8 GB) including all the mooring time series files in NetCDF format and a spreadsheet containing two tabs – tab 1 lists the mooring file names, locations, starting date, end date and the doi link to the original individual data file; tab 2 lists all the individual instruments in each mooring files, their deployment depth, the observational period, the variables measured and the depth of the seabed of the mooring location. Funding information: This research was supported by Ocean Cryosphere Exchanges in ANtarctica: Impacts on Climate and the Earth system, OCEAN ICE, which is funded by the European Union, Horizon Europe Funding Programme for research and innovation under grant agreement Nr. 101060452, https://doi.org/10.3030/101060452. This work was funded by UK Research and Innovation (UKRI) under the UK government's Horizon Europe funding Guarantee (grant number 10048443). |
| Faculty \ School: | Faculty of Science > School of Environmental Sciences University of East Anglia Research Groups/Centres > Theme - ClimateUEA |
| UEA Research Groups: | Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences Faculty of Science > Research Groups > Collaborative Centre for Sustainable Use of the Seas |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 28 Oct 2025 12:30 |
| Last Modified: | 28 Oct 2025 12:30 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/100817 |
| DOI: | 10.5194/essd-17-5693-2025 |
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