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02.22.13: LPV analysis of exp25_sponge using 38 cycles over 600daysΒΆ

I show here the LPV analysis for exp25_sponge. First, the solution converges to the steady balance faster than in exp25 (compare Fig. 1 here with Fig. 1 in this note). Second, the patterns in the LPV balance as well as in the Lagrangian-mean flow are qualitatively similar (compare Figs. 2 and 3 here with Figs. 2 and 3 in this note), although the amplitude of the zonal mean flow is closer to that in exp24 than in exp25 (Fig. 4).


Figure 1: Test of convergence toward the steady balance (balance between the advective and dissipative terms) using up to 38 cycles over 600 days (exp25_sponge).


Figure 2: LPV analysis using 38 cycles over 600 days in exp25_sponge.


Figure 3: Lagrangian-mean zonal and meridional flow averaged over the 38 cycles (exp25_sponge).


Figure 4: Zonal average of the zonal component of the Lagrangian-mean flow in exp25, exp25_sponge and exp24.

Computed with theory_test_light_several_cycles_script.m in RESEARCH/MODELISATION/HIM/studies/PV_and_dissipation/forced_damped_wave/exp25_sponge on the main disk on ipu1. The Matlab file is diag_VC_38_cycles_100day_long_50day_apart_day2015to3865_exp25_sponge_light.mat in that same directory. Fig. 1 was produced using LPV_steady_balance_test_conv.m in that same directory.