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The Iberian Poleward Current around N and NW Iberia

The Iberian Poleward Current around N and NW Iberia. Manuel Ruiz-Villarreal Pablo Otero Paula Conde Alvaro Peliz Jesús Dubert. Configuration. ROMS-AGRIF Full physics. Meteorological forcing by a high resolution model (MM5/Meteogalicia or HIRLAM/INM)

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The Iberian Poleward Current around N and NW Iberia

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  1. The Iberian Poleward Current around N and NW Iberia Manuel Ruiz-Villarreal Pablo Otero Paula Conde Alvaro Peliz Jesús Dubert

  2. Configuration • ROMS-AGRIF • Full physics. Meteorological forcing by a high resolution model (MM5/Meteogalicia or HIRLAM/INM) • Three grids with 15Km, ~5Km and 1.8 km. Larger grid introduces a realistic large scale meridional pressure gradient and • Climatological forcing and run in the larger domain (Peliz & Dubert) • Realistic meteo forcing from August 2002

  3. Salinity and velocity at 100 m

  4. Salinity

  5. Meridional velocity

  6. Mediterranean Water

  7. Slope current response to wind events Daily model cross-section of density and S at 42 N downwelling Enhanced slope current relaxation Weakening upwelling Upwelling of slope current waters

  8. Poleward velocity response to wind events downwelling Subsurface maximum relaxation upwelling o o o Surface intensified

  9. SST AVHRR vs model SST

  10. Hydrographical section vs model

  11. Quickscat vs MM5

  12. Sensitivity tests hmin=40m, theta_b=0.0 Enhanced mesoscale activity hmin=10m, theta_b=0.0 More intense IPC hmin=40m, theta_b=0.2 Broader density signature

  13. Conclusions • We have set-up a realistic configuration for studying the poleward slope flow off N and NW Iberia • IPC exhibits variability in response to wind events. • On the north coast, wind forcing can be the dominant term in the penetration of IPC. • Our work in progress is an evaluation of physical terms; sensitivity to different parameters and setting-up other periods of simulation.

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