Asymmetric response of the Atlantic Meridional Ocean Circulation to freshwater anomalies in a strongly-eddying global ocean model

Sandra-Esther Brunnabend; Henk A. Dijkstra

doi:10.1080/16000870.2017.1299283

Asymmetric response of the Atlantic Meridional Ocean Circulation to freshwater anomalies in a strongly-eddying global ocean model

Tellus

Volume 69 (2017): Issue 1

By: Sandra-Esther Brunnabend and Henk A. Dijkstra

Open Access

|Jan 2017

Figures & Tables

Maximum AMOC at $35^{\circ}$ N; the values of $G_{S}$ are shown in the labeling of the curves. The black curve is the AMOC strength of the reference simulation.

Mean of model years 1–96 for the reference simulation: (a) kinetic energy (mean over the upper 50 m), (b) potential density (average over the upper 50 m), (c) temperature (mean over the upper 50 m), (d) salinity (mean over the upper 50 m), (e) maximum mixed layer depth in March, and (f) pattern of the AMOC.

Mean of model year 45 for the $G_{S} = 0.5$ simulation: (a) kinetic energy (mean over the upper 50 m), (b) potential density (average over the upper 50 m), (c) temperature (mean over the upper 50 m), (d) salinity (mean over the upper 50 m), (e) maximum mixed layer depth in March, and (f) pattern of the AMOC.

Annual mean, upper 50 m averaged, kinetic energy difference of the $G_{S} = - 0.5$ simulation w.r.t. mean of model year 45 of the $G_{S} = 0.5$ simulation; model year (a) 48, (b) 56, and (c) 76.

Annual mean AMOC difference of the $G_{S} = - 0.5$ simulation w.r.t. the mean of model year 45 of the $G_{S} = 0.5$ simulation; model year (a) 48, (b) 56, and (c) 76.

Difference fields of the $G_{S} = - 0.5$ simulation w.r.t. the mean of model year 45 of the $G_{S} = 0.5$ simulation. (a), (e), and (i) potential density (average over the upper 50 m), (b), (f), and (j) temperature (mean over the upper 50 m), (c), (g), and (k) salinity (mean over the upper 50 m), and (d), (h), and (l) maximum mixed layer depth in March; model year (a)–(d) 48, (e)–(h) 56, and (i)–(l) 76.

Sketch of an isopycal which surfaces at $θ = θ_{0}$ and the associated diapycnal transport $ψ$ (in Sv), isopycnal transport G (in Sv) and volume V changes (in m $^{3}$ ).

(a)–(d) Isopycnal stream function $ψ$ , (e)–(h) volume tendency $\partial V / \partial t$ , and (i)–(l) transformation ‘pseudo’ stream function G of (a), (e), and (i) $G_{S} = 0.5$ Sv, model year 2, (b), (f), and (j) $G_{S} = 0.5$ Sv, model year 46 minus year 2, (c), (g), and (k) $G_{S} = - 0.5$ Sv, model year 47, (d), (h), and (l) $G_{S} = - 0.5$ Sv, model year 77 minus year 47.

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DOI: https://doi.org/10.1080/16000870.2017.1299283 | Journal eISSN: 3035-9554

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Language: English

Page range: 1299283 - 1299283

Submitted on: Dec 22, 2016

Accepted on: Jan 23, 2017

Published on: Jan 1, 2017

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

Keywords:

AMOC,

high-resolution ocean modeling,

hosing,

Parallel Ocean Program

© 2017 Sandra-Esther Brunnabend, Henk A. Dijkstra, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 69 (2017): Issue 1

Asymmetric response of the Atlantic Meridional Ocean Circulation to freshwater anomalies in a strongly-eddying global ocean model

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