152191 - Drivers dynamics and persistence of the 2017-2018 Tasman Sea.pdf (1.43 MB)
Drivers, dynamics, and persistence of the 2017/2018 Tasman Sea marine heatwave
journal contribution
posted on 2023-05-21, 11:39 authored by Jules KajtarJules Kajtar, Bachman, SD, Neil HolbrookNeil Holbrook, Gabriela Semolini PiloDuring the austral summer of 2017/2018, the Tasman Sea experienced an intense marine heatwave over an extensive area. It persisted for approximately 3 months and caused substantial ecological impacts. The marine heatwave was understood to have been driven primarily by increased net downward heat flux associated with a high pressure system. However, it has been unclear why the marine heatwave persisted. Using an ultra-high-resolution (∼1 km) regional ocean model simulation, the drivers, dynamics, and persistence of the 2017/2018 marine heatwave are explored in detail. It is found that a burst of warm water advection helped to initiate the event, but a shallower than usual mixed layer, coupled with near continuous net downward air-sea heat flux, caused the marine heatwave to persist. Submesoscale dynamics were found to be relatively unimportant to the marine heatwave's persistence.
History
Publication title
JGR OceansVolume
127Issue
8Article number
e2022JC018931Number
e2022JC018931Pagination
1-12ISSN
2169-9275Department/School
Institute for Marine and Antarctic StudiesPublisher
Wiley-Blackwell Publishing Inc.Place of publication
United StatesRights statement
© 2022. The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) License, (https://creativecommons.org/licenses/by-nc-nd/4.0/) which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.Repository Status
- Open