Greenhouse warming reduces global energy conversion into oceanic lee waves

Yang, Zhibin, Jing, Zhao and Zhai, Xiaoming (2023) Greenhouse warming reduces global energy conversion into oceanic lee waves. Geophysical Research Letters, 50 (16). ISSN 0094-8276

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Oceanic lee waves play an important role in dissipating wind-driven ocean circulations and powering turbulent diapycnal mixing. Here we investigate impacts of the greenhouse warming on global energy conversion into lee waves using a linear theory of lee wave generation and output from a high-resolution (0.1° for the ocean) coupled global climate model. The global energy conversion rate into lee waves under the historical (1930s) climate condition is estimated to be 193.0 ± 3.0 GW. Under the high carbon emission scenario, this conversion rate is projected to decrease by about 20% by the end of 21st century, due to weakened bottom large-scale mean flows, mesoscale eddies and stratification. The decrease of the conversion rate is widespread and particularly pronounced in the Gulf Stream and Drake Passage.

Item Type: Article
Additional Information: Funding Information: This work is supported by Marine S&T Fund of Shandong Province for Laoshan Laboratory (2022QNLM010302) and Taishan Scholar Funds (tsqn201909052). We thank John Goff for providing the abyssal hill topography products and Bing Han for providing the STORM data and Laoshan Laboratory for the support of computing resources. ZY thanks the helpful discussion with Shantong Sun.
Uncontrolled Keywords: coupled global climate model,greenhouse warming,linear theory,oceanic lee waves,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
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Depositing User: LivePure Connector
Date Deposited: 01 Aug 2023 08:32
Last Modified: 29 Aug 2023 09:31
DOI: 10.1029/2023GL104467


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