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Coastal Altimetry Ted Strub Corinne James, Martin Saraceno, Remko Scharoo and many colleagues

Coastal Altimetry Ted Strub Corinne James, Martin Saraceno, Remko Scharoo and many colleagues. Issues for Coastal Oceangraphy and Inland Hydrology. Data sets to be used – here we use the US west coast. Time and space scales to be resolved. Use of tide gauges.

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Coastal Altimetry Ted Strub Corinne James, Martin Saraceno, Remko Scharoo and many colleagues

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  1. Coastal Altimetry Ted Strub Corinne James, Martin Saraceno, Remko Scharoo and many colleagues

  2. Issues for Coastal Oceangraphy and Inland Hydrology • Data sets to be used – here we use the US west coast. • Time and space scales to be resolved. • Use of tide gauges. • Use of alternate corrections (we tropo). • Help from numerical models of coastal circulation.

  3. Altimeter Issues For Coastal Oceanography • Time and space scales to be resolved. • ~ 3-5 days; 10 km offshore; 300 km alongshore • Use of tide gauges can help. • Use of alternate corrections (we tropo, etc.) are needed. • Need some in water current measurements. • Help is needed from numerical models of coastal circulation.

  4. Jason-1 (blue) and T/P-2 (red) Neah Bay T T T T T T North Spit T San Diego T T T

  5. Extending the Altimeter Alongtrack SSH to the Coast 2005 ~ June 18 ~ June 28 ~ July 8 Signal of 20-30 cm when then altimeter crosses the upwelling jet and dense upwelled water. Within 20-50 km of the coast.

  6. Extending the Altimeter Alongtrack SSH to the Coast 2005 ~ June 18 ~ June 28 ~ July 8 Signal of 20-30 cm when then altimeter crosses the upwelling jet and dense upwelled water. Within 20-50 km of the coast.

  7. ROMS Model: SSH variability is associated w/ coastal currents and eddies Model variability is comparable to alongtrack Topex altimetry Map satellite SSH in coastal ocean: via variational data assimilation Day 271, 2001, track 247 Topex Model Day 269, 2001, track 206 (courtesy S. Springer, OSU)

  8. Alongshore depth-ave currents at mid-shelf mooring locations along Oregon coast (summer 2002): model (Koch, Erofeeva, Choi) obs (Kosro, Hickey, Ramp) Off Newport 2-3 day variability in currents associated with wind stress variability: challenge for analysis of satellite altimetry (insufficient temporal resolution) Off Coos Bay Off Rogue R.

  9. Altimeter Issues For Coastal Oceanography • Time and space scales to be resolved. • ~ 3-5 days; 10 km offshore; 300 km alongshore • Use of tide gauges can help. • Use of alternate corrections (we tropo, etc.) are needed. • Need some in water current measurements. • Help is needed from numerical models of coastal circulation.

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