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This article deals with the phenomena of El Nino and La Nina. Topics include the apparently widespread effect of these phenomena on weather systems around the Earth and new methods to detect their arrival and departure. There is a discussion of the use of SeaWIFS satellite data to detect changes in the distribution of oceanic algae (phytoplankton) which occur when warm or cool water masses move, as when an El Nino event occurs.
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DWEL-000-000-000-401
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