The Sverdrup circulation in the tropical Pacific
observed by scatterometer winds

Slides shown during talk at the Fall AGU, San Francisco, Dec 7 2002

1. Why is the Sverdrup circulation so weak near the equator?
2. ADCP observations:
   1. Johnson et al. 2001 data distribution
   2. (y,z) sections of zonal current at 110°W, 155°W, 165°E
   3. Maps of surface zonal current and zonal transport.
3. Part of the answer is that the ship winds were wrong (Compare wind products): 
   1. 6 maps of Curl(Tau)
   2. Zonal stress at 130°-100°W
   3. Maps of ERS and FSU Taux and difference:   25°S-25°N   10°S-10°N
4. ERS curl and Sverdrup zonal transport   (Why the strip of curl matters)
5. Sverdrup streamfunction:   20°S-20°N   10°S-10°N
6. Observed and Sverdrup zonal transport
   Compare FSU: Sverdrup zonal transport from FSU and ERS winds   Add obs transport