1. Corinne James, Martin Saraceno, Remko Scharoo
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

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

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

13. Model variability is comparable to alongtrack Topex altimetry
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)

14. 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.

15. 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.