02.05.13: Eulerian and Lagrangian mean dissipative term in all simulations

These figures show that a spatial average may not be the most appropriate measure for the strength of the circulation. BTW, is the Eulerian and Lagrangian circulation for KH=0.25e3 m2/s versus KH=4e3 m2/s? Yes. In the experiment with KH=0.25e3 m2/s and 2 τ, the Lagrangian-mean flow is eastward along 30°N, consistent with the divergent meridional Lagrangian flow between 9°E and 10°E.

Figure 1: Lagrangian-mean dissipative term (scaled by the gradient of the Lagrangian-mean PV) for all 6 simulations with waves forced with 2 τ.

Figure 2: Lagrangian-mean dissipative term (scaled by the gradient of the Lagrangian-mean PV) for all 6 simulations with waves forced with τ.

Figure 3: Eulerian-mean dissipative term (scaled by the gradient of the Eulerian-mean PV) for all 7 simulations with waves forced with 2 τ.

Figure 4: Eulerian-mean dissipative term (scaled by the gradient of the Eulerian-mean PV) for all 7 simulations with waves forced with τ.

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plotted with plot_Eul_Lag_mean_D.m in RESEARCH/MODELISATION/HIM/studies/PV_and_dissipation/forced_damped_wave/exp15 on the main ipu1 disk.