ocean surface topography science team meeting, buellton, california, june 19, 2008
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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, - PowerPoint PPT PresentationTRANSCRIPT
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Ocean Surface Topography Science Team Meeting,Buellton, California, June 19, 2008
Nikolai MaximenkoIPRC/SOEST, University of Hawaii at Manoa, USA
A New View of the Ocean General Circulation
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.Centurioniand many others
NASA NSF NOAA JAMSTEC APDRC
Ocean currents in Physiography for High Schools by Albert L. Arey, Frank L. Bryant, William W. Clendenin and William T. Morrey, USA: 1911.
Reid, 1994Windows to the Universe at UCARhttp://www.windows.ucar.edu/
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Satellite altimeter measures directly the distance between the orbit andthe ocean surface.
Aviso
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Maximum deviation of geoid from ellipsoidreaches +/- 100 m.
Sea level difference due to ocean dynamicsis a few meters.
Earth Gravity model and Equipotential surface (geoid) improved by GRACE
http://www.csr.utexas.edu/grace/gallery/gravity/ggm01_asia.html
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Courtesy of Victor Zlotnicki, JPL
NASA JPL MDOT based on the GRACE geoid
Effective resolution: 500 kmCorresponds well withthe altitude of the orbitof 485 km.
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<U>
sqrt(<U’2+V’2>)
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 averageon ¼ deg. grid.
SVP/GDP drifters
Mean streamlines of ocean surface currents. Colors show strength of the currents
Mean sea level improved by combining satellite radar altimeter, GRACE and drifter data
Eastward geostrophic velocities derived from the improved mean sea level
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HLCC AzC
StHCNECC/SECstriations
Eastward geostrophic velocities derived from the improved mean sea level
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Zonal geostrophic velocities from 1993-2002 MDOT’s
HLCC AzC
StHCNECC/SECstriations
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Stationarywaves
gravity waves on street
Rossby wavesin ocean
Jason-2Good luck!!!