An official website of the United States government
Here's how you know
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) Typical trajectories of tracers that start in the upwelling region. (b) Residence times of tracers as a function of initial time ti (in T) and the vertical coordinate yi. (c) Amplification of the rectangular area of (b).