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As ENSO is buried, does the La Nina phoenix arise? |
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Written by John Olszewski
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The latest assessment, which is published by the compilers (the CPC
organization and its arm National Centres for Environmental Prediction (NCEP)/
National Oceanic and Atmospheric Agency (NOAA)), of weather graphs together
with their latest view of the state of the Pacific Ocean, indicate that a La
Nina event has evolved and is now present over large areas of the eastern
Pacific.
Sea surface temperatures,
measured over seven days from 21 March, clearly show negative values, meaning
temperatures are below normal for this time of the year. This is indicative of
La Nina.
Both the oceanic El Nino
and La Nina events involve changes in sea water temperature to a considerable
depth across an area several times the size of our sub-continent.
The swift change
undoubtedly relates to equally dramatic changes in the length and breadth of
the South Pacific atmosphere. The cause for this turn-around will likely be
traced to an affect from the Sun.
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