IMAGE ADVISORY April 22, 1999
"LA NI哻" BEGINS TO FADE
The cold pool of water in the Pacific known as "La Ni鎙" is beginning
to fade, but ocean conditions have not returned to normal, according to
scientists studying new images from the U.S.-French TOPEX/Poseidon
satellite.
New imagery of sea-surface heights taken this month by the
ocean-observing satellite show cooler temperatures and lower sea levels
across the equatorial Pacific Ocean (seen in blue and purple in the center
of the image) are diminishing, which indicates that the equatorial Pacific
is slowly returning to normal.
However, in the north and south Pacific Ocean, temperatures and sea
level remain high (seen in red and white), a pattern that began many months
ago. In a nutshell, this means that although La Nina is fading, heat
distribution in the Pacific Ocean remains dramatically out of balance.
The new satellite image is available on the Internet at
http://www.jpl.nasa.gov/elnino.
The TOPEX/Poseidon mission is managed by the Jet Propulsion
Laboratory for NASA's Office of Earth Science, Washington, DC. JPL is a
division of the California Institute of Technology, Pasadena, CA.
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