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ToolsQian, Jiangchao, Zhai, Xiaoming, Wang, Zhaomin and Jochum, Markus (2023) Distribution and trend of wind power input to near-inertial motions in the Southern Ocean. Geophysical Research Letters, 50 (18). ISSN 0094-8276
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Abstract
Wind power input to near-inertial motions is an important energy source for generating diapycnal mixing in the ocean. However, the distribution and long-term trend of this input over the Southern Ocean have yet to be quantified. In this study, we investigate the near-inertial wind power input (WPIi) to the Southern Ocean using a global eddy-permitting coupled ocean-sea ice model forced by a high-resolution atmospheric reanalysis product. Our results reveal a zonally asymmetric distribution of WPIi in the Southern Ocean, with the strongest input in the South Indian Ocean and the weakest in the South Pacific. The integrated WPIi between 30°S and 60°S exhibits a significant positive trend over the past four decades due to the intensification of mesoscale weather systems. The surface mixed-layer depth is found to modulate the spatial pattern and trend of WPIi by altering the surface near-inertial currents.
| Item Type: | Article |
|---|---|
| Additional Information: | Data Availability Statement: ERA5 data were obtained from the European Centre for Medium-Range Weather Forecasts (https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels). The MITgcm code was obtained freely from http://mitgcm.org/. Our model data, configuration and input directories can be downloaded at https://doi.org/10.5281/zenodo.8298366. Funding information: This work was supported by the National Natural Science Foundation of China (NSFC) Projects (41941007; 41876220) and the Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) (313022009). XZ and MJ acknowledges support by a Royal Society International Exchanges Award (IES\R1\180037). |
| Uncontrolled Keywords: | geophysics,earth and planetary sciences(all) ,/dk/atira/pure/subjectarea/asjc/1900/1908 |
| Faculty \ School: | Faculty of Science > School of Environmental Sciences Faculty of Science > School of Natural Sciences |
| UEA Research Groups: | Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 01 Sep 2023 16:30 |
| Last Modified: | 29 Sep 2023 08:30 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/92971 |
| DOI: | 10.1029/2023GL105411 |
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