04.26.2013: LPV analysis of exp2_l2 (PV balance along trajectories)ΒΆ
Here, I look at the LPV analysis in exp2_l2. Fig. 1 shows 5 trajectories and Fig. 2 shows their LPV analysis. Changes in PV that are being measured are in the order of 1e-12/1e-11 1/(m.s) which is the order of the accuracy of the LPV analysis. Furthermore, we see that there are differences in one term depending if we use snapshots or 1-day averages. It is thus without surprise that the GLM analysis does not give the right result (see this note). We might need higher resolution (or something else) to improve the LPV analysis but until we do that, we cannot say if the model does or does not satisfy the PV balance along trajectories.
Figure 1: Trajectories over 200 days in exp2_l2. The trajectories are nearly two closed loops.
Figure 2: LPV analysis for the 5 trajectories shown in Fig. 1 using snapshots (plain) or 1-day averages (dash).
The LPV analysis was done with LPV_analysis_all_time_script.m producing the Matlab file LPV_analysis_alltime_d4750d4950_8E11E_30N_mid_exp2_l2.mat, all in RESEARCH/MODELISATION/HIM/studies/diss_train_of_eddies/exp2/exp2_l2/ on the main disk on ipu1.