In this project, the PI will collect water samples to measure helium isotopes and tritium on seven sections in the Pacific, contributing a tracer component as part of the World Ocean Circulation Experiment (WOCE) Hydrographic Program (WHP). The overall goal of the WHP is to determine the long-term mean thermohaline and wind-driven ocean circulation and its relation to climate change. The He-3/Tr pair provides a means of determining the age of shallow waters on time scales of months to decades.
