Relations between the Zonal Velocity at the Maximum Winter Mixed Layer

Depth and SPTW Properties

Xing LuMPO 524 Spring 2014 Project

South Pacific Tropical Water

The South Equatorial Current (SEC) and SOI

Kessler and Cravatte 2013

September 2005 – August 2013

Lateral Induction and Zonal Geostrophic Velocity at Maximum Winter MLD

Total subductionVertical pumpingLateral induction

Mean Annual Cycle

Conclusions• Zonal geostrophic velocity at maximum winter mixed

layer depth corresponds to lateral induction and subduction.

• Zonal geostrophic velocity at maximum winter mixed layer depth and the areas of SPTW both have a three-year cycle.

• SEC and the areas of SPTW both have several months lag with SOI.

• SEC contributes to the areas of SPTW.