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Interacting internal waves explain global patterns of interior ocean mixing

Articolo
Data di Pubblicazione:
2024
Abstract:
Across the stable density stratification of the abyssal ocean, deep dense water is slowly propelled upward by sustained, though irregular, turbulent mixing. The resulting mean upwelling determines large-scale oceanic circulation properties like heat and carbon transport. In the ocean interior, this turbulent mixing is caused mainly by breaking internal waves: generated predominantly by winds and tides, these waves interact nonlinearly, transferring energy downscale, and finally become unstable, break and mix the water column. This paradigm, long parameterized heuristically, still lacks full theoretical explanation. Here, we close this gap using wave-wave interaction theory with input from both localized and global observations. We find near-ubiquitous agreement between first-principle predictions and observed mixing patterns in the global ocean interior. Our findings lay the foundations for a wave-driven mixing parameterization for ocean general circulation models that is entirely physics-based, which is key to reliably represent future climate states that could differ substantially from today’s.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
Giovanni Dematteis, Arnaud Le Boyer, Friederike Pollmann, Kurt L Polzin, Matthew H Alford, Caitlin B Whalen, Yuri V Lvov
Autori di Ateneo:
DEMATTEIS GIOVANNI
Link alla scheda completa:
https://iris.unito.it/handle/2318/2028070
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/2028070/1403684/Nature-Communications-Internal-Waves.pdf
Pubblicato in:
NATURE COMMUNICATIONS
Journal
  • Dati Generali
  • Aree Di Ricerca

Dati Generali

URL

https://www.nature.com/articles/s41467-024-51503-6

Aree Di Ricerca

Settori (5)


PE10_21 - Earth system modelling and interactions - (2024)

PE10_8 - Oceanography (physical, chemical, biological, geological) - (2024)

PE3_14 - Fluid dynamics (physics) - (2024)

PIANETA TERRA, AMBIENTE, CLIMA, ENERGIA e SOSTENIBILITA' - Cambiamenti Climatici

SCIENZE MATEMATICHE, CHIMICHE, FISICHE - Turbolenza e Sistemi complessi
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