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Ocean Surface Topography Science Team Meeting, Buellton, California, June 19, 2008

Ocean Surface Topography Science Team Meeting, Buellton, California, June 19, 2008. A New View of the Ocean General Circulation. Nikolai Maximenko IPRC/SOEST, University of Hawaii at Manoa, USA. Collaborators: Peter Niiler , Bruce Cornuelle, Timothy Liu,

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Ocean Surface Topography Science Team Meeting, Buellton, California, June 19, 2008

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  1. Ocean Surface Topography Science Team Meeting, Buellton, California, June 19, 2008 A New View of the Ocean General Circulation Nikolai Maximenko IPRC/SOEST, University of Hawaii at Manoa, USA Collaborators: Peter Niiler , Bruce Cornuelle, Timothy Liu, Oleg Melnichenko, Niklas Schneider, Jan Hafner, Emanuel DiLorenzo, Vincent Combes , Hideharu Sasaki Contributions and acknowledgements: B. Galperin, B. Bang, V. Zlotnicki, D. Chambers, M.-H. Rio, C. Koblinsky, K. Richards, J. McWilliams, H.-P. Huang, P. Hacker, C. Wilson, S. DeCarlo, S.-P. Xie, D. Chelton, P. Rhines, M. McIntyre, Y.Y. Kim, M. Pazos, B. Qiu, J. Potemra, K. Lebedev, H. Yoshinari, L.Centurioni and many others NASA NSF NOAA JAMSTEC APDRC

  2. Ocean currents in Physiography for High Schools by Albert L. Arey, Frank L. Bryant, William W. Clendenin and William T. Morrey, USA: 1911.

  3. Windows to the Universe at UCAR http://www.windows.ucar.edu/ Reid, 1994

  4. Satellite altimeter measures directly the distance between the orbit and the ocean surface.

  5. Aviso

  6. Earth Gravity model and Equipotential surface (geoid) improved by GRACE Maximum deviation of geoid from ellipsoid reaches +/- 100 m. Sea level difference due to ocean dynamics is a few meters. http://www.csr.utexas.edu/grace/gallery/gravity/ggm01_asia.html

  7. NASA JPL MDOT based on the GRACE geoid Courtesy of Victor Zlotnicki, JPL Effective resolution: 500 km Corresponds well with the altitude of the orbit of 485 km.

  8. SVP/GDP drifters <U> • AOML: • Feb 1979 – Dec 2006 • 10561 drifters • 9997 years • 78 M km • Hence: • drifter life ~ 1 year • - mean speed ~ 25 cm/s <…> is a drifter-ensemble average on ¼ deg. grid. sqrt(<U’2+V’2>)

  9. Mean streamlines of ocean surface currents. Colors show strength of the currents

  10. Mean sea level improved by combining satellite radar altimeter, GRACE and drifter data

  11. Eastward geostrophic velocities derived from the improved mean sea level

  12. Eastward geostrophic velocities derived from the improved mean sea level HLCC AzC striations StHC NECC/SEC

  13. Zonal geostrophic velocities from 1993-2002 MDOT’s HLCC AzC striations StHC NECC/SEC

  14. Stationary waves gravity waves on street Rossby waves in ocean

  15. Jason-2 Good luck!!!

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