1 / 19

Jerome Fiechter and Christopher N.K. Mooers Ocean Prediction Experimental Laboratory

High-Resolution Baroclinic Ocean Simulations for the East Florida Shelf: Frontal Eddies to Reef Scale Processes. 2003 Terrain-Following Ocean Models Users Workshop Seattle, 06-AUG-2003. Jerome Fiechter and Christopher N.K. Mooers Ocean Prediction Experimental Laboratory

elon
Télécharger la présentation

Jerome Fiechter and Christopher N.K. Mooers Ocean Prediction Experimental Laboratory

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. High-Resolution Baroclinic OceanSimulations for the East Florida Shelf:Frontal Eddies to Reef Scale Processes 2003 Terrain-Following Ocean Models Users Workshop Seattle, 06-AUG-2003 Jerome Fiechter and Christopher N.K. Mooers Ocean Prediction Experimental Laboratory Rosenstiel School of Marine and Atmospheric Science University of Miami

  2. Region of interest • Geographical domain • Straits of Florida • East Florida Shelf • Florida Keys reef tract • Circulation features • Florida Current • Gulf Stream • Loop Current • Tortugas gyre • Frontal eddies Source: NASA (MODIS image)

  3. Regional of interest East Florida Shelf coastal ocean model (EFS-POM) • Princeton Ocean Model (POM) • Curvilinear grid • Vertical sigma levels • SEA-COOS program • COMPS (USF) • EFSIS (UM) • SABSOON (UNC) (www.seacoos.org; www.efsis.rsmas.miami.edu)

  4. EFS-POM ocean model Domain grid - Resolution Horizontal: 251x101 nodes (~2-20km) Vertical: 25 σ-levels (~0.1-100m) – clustering in surface and bottom layers Min. depth: 5m (extended to physical coastline location)

  5. EFS-POM ocean model Open and surface boundary conditions - Summary

  6. 1999 Hindcast simulation - Seasonal cycle SST and SSH daily animation

  7. 1999 Hindcast simulation - Comparison with STACS data at 27N EFS-POM (1999) STACS (1983) EFS-POM (1999) STACS (1983) Temperature and normal velocity (STACS: 8 stations; EFS-POM: 30 nodes) Temperature (deg.C) Temperature (deg.C) Meridional velocity (m/s) Meridional velocity (m/s) yearly average standard deviation

  8. Frontal spin-off eddy event, February 1999 SST and SSHA daily animation

  9. Frontal spin-off eddy event, February 1999 Eddy propagation along EFS shelf break (200m isobath)

  10. Frontal spin-off eddy event, February 1999 Summary * Lee et al., 1991 # Johns and Schott, 1987

  11. Frontal spin-off eddy event, February 1999 • Formation and evolution • origin • decay and growth rates • “gap closure paradox” • Cross-shelf transport • heat, momentum • biochemical tracers • Sensitivity to forcing and numerical parameters • seasonal transport cycle • HORCON, TPRNI • grid type and resolution Remaining issues

  12. Dry Tortugas high-resolution nested model (DT-POM) Domain grid - Resolution Horizontal: 65x57 nodes (~1-2km) Vertical: 21 σ-levels (~0.1-10m) – clustering in surface and bottom layers Min. depth: 2m (no coastline)

  13. Dry Tortugas high-resolution nested model (DT-POM) Open and surface boundary conditions - Summary

  14. 1999 Hindcast simulation - DT model Bottom temperature and velocity

  15. 1999 Hindcast simulation - DT model Vertical temperature and velocity structure at 24.7N FEBRUARY 1999 AUGUST 1999

  16. 1999 Hindcast simulation - Tracer trajectories February (e.g., grouper spawning) and August (e.g., coral spawning)

  17. Conclusions • East Florida Shelf model (EFS-POM) is qualified to: • study large scale to mesoscale processes • investigate regional connectivity and recruitment (i.e., long-range dispersion processes) • Dry Tortugas model (DT-POM) is qualified to: • study submesoscale and reef scale processes • investigate self-seeding vs. export conditions (i.e., local retention processes) • relate benthic communities to flow dynamics

  18. Future Work • East Florida Shelf model (EFS-POM) • improve open boundary and surface forcing • increase horizontal and vertical resolution • validate further against observations • sensitivity study (num. param., forcing, resolution) • add ecosystem model (e.g., NPZD) • Dry Tortugas model (DT-POM) • improve nesting method • increase horizontal and vertical resolution • validate against observations • 3-D trajectories / biological behavior

  19. Questions and comments

More Related