Explains what upwelling and downwelling of ocean currents are, and the impact of Ekman transport and the Coriolis effect on current movement as well as where they occur. The effects of upwelling and downwelling on water temperature and...

This page tells you what El Nino is, provides links to animations and videos on El Nino, explains how to recognize El Nino, and discusses the history of significant El Nino events.