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Results of latest HYCOM runs (NRL-RSMAS)

Results of latest HYCOM runs (NRL-RSMAS). Z. Garraffo, T. Townsend, G.Halliwell, A. Wallcraft, L. Smith, W.Schmitz, H. Hurlburt, E. Chassignet In collaboration with F. Schott. Veldf4=0.01. Sea surface height for expt 11.8. 1 year: 3-4 north brazil current rings with surface signal;

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Results of latest HYCOM runs (NRL-RSMAS)

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  1. Results of latest HYCOM runs (NRL-RSMAS) Z. Garraffo, T. Townsend, G.Halliwell, A. Wallcraft, L. Smith, W.Schmitz, H. Hurlburt, E. Chassignet In collaboration with F. Schott

  2. Veldf4=0.01

  3. Sea surface height for expt 11.8 1 year: 3-4 north brazil current rings with surface signal; 1 loop current ring detached

  4. Mixed layer depth for expt 11.6

  5. Surface speed (1 yr mean) Reduced lapl mom mix Reduced nonlin visc, bottom drag constant A2

  6. Speed sig2=36.77 (~1500m) Reduced lapl mom mix constant A2 Reduced nonlin visc, bottom drag

  7. Speed sig2=37.10 (near bottom) Reduced lapl mom mix Reduced nonlin visc, bottom drag constant A2

  8. Schott et al., JPO 2004 Schmitz, 1996 IFM , BIO moorings location

  9. Section 43N uLSW LSW GFZW DSOW sum 15Sv 15Sv 5Sv 5 5 (7.5) Reduced lapl mom mix 16Sv 16Sv 10Sv 2 5 (15) Reduced nonlin visc, bottom drag constant A2

  10. Speed sig2=36.77 (~1500m) constant A2

  11. 43ºN, nowcast 25Sv 0 13Sv (18) 12

  12. Section 43N Observations: Schott et al (transports in Sv) totals: upsw+Lsw+gfzw+dsow Lsw+gfzw+dsow 2.8 1.2 Tot 12.2/12.9 1.2 2.3 Tot 4.7/7.5 4.9 2.6 2.2 5 Tot 9.8/15 Reduced lapl mom mix Reduced nonlin visc, bottom drag constant A2

  13. Surface eddy kinetic energy Observations (Schmitz)

  14. Deep eddy kinetic energy Observations (Schmitz)

  15. Summary Gulfstream characteristics are improved in simulations with lower viscosity at 43N: Deep western boundary current was also improved. Diffusion affects how the deep southward overturn flow is distributed across longitudes. In 1 model year, expt 118 shows: 3-4 North Brazil current rings with surface expression 1 loop current ring detached Plots in http://hycom.rsmas.miami.edu/internal/zulema

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