Initial tests 15 for the GCR (unbalanced variable)

• RHS anti-PV is raw data.
• PV=0 transform is grid only.
• The first guess unbalanced pressure is p-Gp (p=raw pressure, Gp is balanced pressure found from GCR try 13).
• No preconditioning.
• 100 iterations (restart 5).
• Mass weighted inner product for GCR coefficients.
• Data location /export/custard/disk-01/ross/PV_Results/GCR_Test/antiPV/GridOnly_NoPrecon_100_MassWt/

• For each variable, horizontal (long/lat) and vertical (lat/eta) plots are shown.
• For the horizonal plots, the levels are "lower level" = L11 (eta=0.056) and "upper level" = L30 (eta=0.445). There are 38 levels in total.
• For the vertical plots, the longitude slice is Greenwich meridian.
• Each field (except differences) is decomposed into large horiz/small vert (left) and small horiz/large vert (right) scales.
• The plots show the max, min, and mean (calculated by the plotter).
• Unbalanced pressure is also plotted as the difference between the 'solution' and the initial guess.
• Anti-PV is also plotted as the difference between the 'solution' and the RHS.

1. Initial guess unbalanced pressure perturbation (ref: Ap_1)

2. RHS Anti-PV (ref: antiPV_RHS)

3. The solution in terms of unbalanced pressure (ref: Ap_Solution)

3. The solution in terms of antiPV (ref: AntiPV_Solution)

The convergence (Error norm vs total iteration)