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Science 19 October 2001:
Vol. 294. no. 5542, pp. 494 - 495
DOI: 10.1126/science.294.5542.494b
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News of the Week

WEATHER FORECASTING:
Getting a Handle on The North's 'El Niño'

Richard A. Kerr

On page 581 of this issue of Science, meteorologists report that despite its reputation as a lightweight, the stratosphere at times reaches down through the troposphere to push Northern Hemisphere weather toward one extreme regime or the other for a couple of months at a time. That could give forecasters an edge in long-range predictions at middle and high latitudes comparable to that provided by El Niño at some latitudes.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)