1. 20110520 alu

2. EKE=EKE0*e 1 where EKE has grown to e-fold of its initial value  Feb = 1/180d  Mar = 1/210d  Jan = 1/280d  Apr = 1/305d  May = 1/380d EKE=EKE0 EKE – averaged zonally as well as from 18 o -25 o N /wrk/profs/hunglu/model/sbPOM/stcc_ideal/stcc_nec_3yr/from_gaea/stcc_run_perturb_3yr_fs/eke_growth_rate/monthly_log_EKE_over_EKE0_0d.gif LEKE=ln(EKE/EKE0)

3. Selected months: Mar, May, Sep, Nov Eddy kinetic Energy (averaged from 18N~25N) Free relax

4. Feb Mar

6. 16.5N 23.5N 19.5N Case: Feb No-smooth 10 j-point smoothZonlavg EKE

7. EKE=EKE 0 e σt, LEKE ≡ ln(EKE/EKE0)=σt, d (LEKE)/dt= σ Case: Mar No-smooth 10 j-point smooth 17N 22N 20N Zonlavg EKE

8. Case: May No-smooth 10 j-point smooth 18N 22.5N 20N

9. Case: Sep No-smooth 22.5N 20N 10 j-point smooth

10. Case: Nov No-smooth 10 j-point smooth

11. Feb MaySepNov Initial state Mid Devlp (at e-fold day) full devlp

12. Feb MaySepNov Initial state Mid Devlp (at e-fold day) full devlp

13. 15 20 25 20 spatially high-pass satellite SSH trajectories of all of the 2435 cyclones (blue lines) and 2273 anticyclones (red lines) 15 25 Study Region

15. B Qiu, JPO 2010 Fig8

16. Shorteste-folding day are around 22N

17. e-folding day for each month, minimum at Oct, maximum at Feb (averaged from 18N~25N) Black line: Instantaneous growth rate, which is the slope of LEKE, at e-folding day for each month. red line: mean growth rate from t=0 to e-folding day 100 days 200 days

18. Mar MaySepNov Free relax Initial state Mid devlp full devlp Sep is th most stable case PV maps at 55m No positive value

19. Mar MaySepNov Initial state Mid Devlp (@e-fold day) full devlp Free relax PV profiles at 137E No positive value

20. Mar MaySepNov Initial state Mid Devlp (at e-fold day) full devlp Free relax dPVdy profiles at 137E superimposed with u and temp No positive value in PV

21. March: Elevation & current Mid-slope Day:280 Full-develp Day:1080 Eddy’s diameter~= 250KM ¶¶

23. 15 20 25

25. 15 20 25 20 spatially high-pass satellite SSH trajectories of all of the 2435 cyclones (blue lines) and 2273 anticyclones (red lines) 15 25