Contrary Responses of the Gulf Stream and the Kuroshio to Arctic Sea Ice Loss

Wang, Kun; Wu, Linyue; Liu, Haiwen; Dan, Bo; Dai, Haijin; Deser, Clara

doi:10.3390/atmos13040514

Cited by 4 publications

(1 citation statement)

References 50 publications

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“…For instance, during the negative phase (El Niño) of El Niño-southern oscillations (ENSO), the tropical Pacific can lead to substantial SST rises, causing widespread warming, whereas the positive phase (La Niña) have the opposite effect 6 . The Pacific decadal oscillation (PDO) affects the strength and direction of key ocean currents such as the Gulf Stream 7 , and the ENSO affects precipitation patterns in Australia and other regions in the tropical Pacific 8 . The effects of these climatic oscillations on ocean conditions are complex and can vary with the oscillation's phase and strength and interactions with other climate factors.…”

Section: Introductionmentioning

confidence: 99%

Impact of climatic oscillations on marlin catch rates of Taiwanese long-line vessels in the Indian Ocean

Mondal,

Ray,

Osuka

et al. 2023

Sci Rep

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This study explored the influence of climatic oscillations on the striped, blue, and silver marlin catch rates in the Indian Ocean by using logbook data from Taiwanese large-scale fishing vessels and climate records from 1994 to 2016. Only the Madden–Julian oscillation (MJO) and the subtropical Indian Ocean dipole (SIOD) had immediate effects on the striped and silver marlin catch rates. The positive and negative phases of the IOD at the lags of 7 and 3 years corresponded to increased and decreased catch rates, respectively, for both the striped and blue marlin, contrasting to the reverse pattern for the silver marlin. Similarly, all three marlin species experienced decreased and increased catch rates respectively during the positive and negative phases of the Pacific decadal oscillation. The striped and blue marlin catch rates decreased and increased during the positive and negative phases, respectively, of the SIOD and MJO with various lags. Our results suggest that the impacts of climatic oscillations on fish species are crucial for policymakers and coastal communities for managing marine resources, forecasting changes in marine ecosystems, and developing strategies to adapt to and mitigate the effects of climate variability.

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Section: Introductionmentioning

confidence: 99%

Impact of climatic oscillations on marlin catch rates of Taiwanese long-line vessels in the Indian Ocean

Mondal,

Ray,

Osuka

et al. 2023

Sci Rep

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Reduction in Arctic sea ice amplifies the warming of the northern Indian Ocean

Li,

Zhang,

Fang

et al. 2024

Atmospheric Research

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Recirculation through western boundary currents varies nonlinearly with the ocean basin's aspect ratio

Gianchandani

2024

Physics of Fluids

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Recirculation gyres adjacent to western boundary currents (WBCs) in the ocean enhance the poleward transport of these currents. While it is well-established that the WBC in a barotropic ocean strengthens with increase in basin's aspect ratio (the meridional-to-zonal extent ratio), how intensity of the recirculation through the western boundary layer varies with this parameter remains unexplored. I address this using the non-dimensional form of the nonlinear, wind-driven Stommel–Munk model of westward intensification that comprises three parameters—the aspect ratio (δ), the damping coefficient (ϵ), and the β-Rossby number (Rβ). Here, ϵ is set by the ratio of Rayleigh friction coefficient (or eddy viscosity) to the meridional gradient of the Coriolis frequency and the basin's zonal dimension, while Rβ is proportional to wind stress amplitude and quantifies the strength of nonlinearity. In the weak-to-moderate nonlinearity limit (Rβ<∼ϵ), perturbation analysis reveals that recirculation varies concavely with aspect ratio, suggesting existence of an optimal aspect ratio (δopt) for which the recirculation is maximum and for typical values of ϵ (10−3−10−2), δopt follows the power-law relation δopt=4.3ϵ. Numerical simulations further validate the existence of δopt. For large ϵ (>5×10−3), the power-law predicts δopt for the numerical solutions rather accurately, but does not hold for smaller ϵ (2×10−3) due to increased importance of nonlinear terms. Nevertheless, the nonlinear variation in recirculation through the western boundary layer with aspect ratio is observed for all ϵ values and may contribute to the heterogeneous increase in the WBC's transport across different ocean basins in a warming climate.

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Contrary Responses of the Gulf Stream and the Kuroshio to Arctic Sea Ice Loss

Cited by 4 publications

References 50 publications

Impact of climatic oscillations on marlin catch rates of Taiwanese long-line vessels in the Indian Ocean

Impact of climatic oscillations on marlin catch rates of Taiwanese long-line vessels in the Indian Ocean

Reduction in Arctic sea ice amplifies the warming of the northern Indian Ocean

Recirculation through western boundary currents varies nonlinearly with the ocean basin's aspect ratio

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