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Articles

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

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Article: 1299283 | Received 22 Dec 2016, Accepted 23 Jan 2017, Published online: 03 Apr 2017

Figures & data

Figure 1. Maximum AMOC at N; the values of are shown in the labeling of the curves. The black curve is the AMOC strength of the reference simulation.

Figure 1. Maximum AMOC at N; the values of are shown in the labeling of the curves. The black curve is the AMOC strength of the reference simulation.

Figure 2. 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.

Figure 2. 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.

Figure 3. Mean of model year 45 for the 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.

Figure 3. Mean of model year 45 for the 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.

Figure 4. Annual mean, upper 50 m averaged, kinetic energy difference of the simulation w.r.t. mean of model year 45 of the simulation; model year (a) 48, (b) 56, and (c) 76.

Figure 4. Annual mean, upper 50 m averaged, kinetic energy difference of the simulation w.r.t. mean of model year 45 of the simulation; model year (a) 48, (b) 56, and (c) 76.

Figure 5. Annual mean AMOC difference of the simulation w.r.t. the mean of model year 45 of the simulation; model year (a) 48, (b) 56, and (c) 76.

Figure 5. Annual mean AMOC difference of the simulation w.r.t. the mean of model year 45 of the simulation; model year (a) 48, (b) 56, and (c) 76.

Figure 6. Difference fields of the simulation w.r.t. the mean of model year 45 of the 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.

Figure 6. Difference fields of the simulation w.r.t. the mean of model year 45 of the 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.

Figure 7. Sketch of an isopycal which surfaces at and the associated diapycnal transport (in Sv), isopycnal transport G (in Sv) and volume V changes (in m).

Figure 7. Sketch of an isopycal which surfaces at and the associated diapycnal transport (in Sv), isopycnal transport G (in Sv) and volume V changes (in m).

Figure 8. (a)–(d) Isopycnal stream function , (e)–(h) volume tendency , and (i)–(l) transformation ‘pseudo’ stream function G of (a), (e), and (i) Sv, model year 2, (b), (f), and (j) Sv, model year 46 minus year 2, (c), (g), and (k) Sv, model year 47, (d), (h), and (l) Sv, model year 77 minus year 47.

Figure 8. (a)–(d) Isopycnal stream function , (e)–(h) volume tendency , and (i)–(l) transformation ‘pseudo’ stream function G of (a), (e), and (i) Sv, model year 2, (b), (f), and (j) Sv, model year 46 minus year 2, (c), (g), and (k) Sv, model year 47, (d), (h), and (l) Sv, model year 77 minus year 47.