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Is El Nino changing?
Science (New York, N.Y.)
|June 17, 2000
Summary
Global warming may influence El Nino, a natural climate oscillation. Changes in El Nino
Area of Science:
- Climate Science
- Oceanography
- Atmospheric Science
Background:
- El Nino is a natural climate oscillation in the tropical Pacific.
- La Nina is the complementary phase of this oscillation.
- The oscillation is a neutrally stable mode influenced by background climate conditions.
Purpose of the Study:
- To investigate the potential impact of global warming on El Nino.
- To clarify controversies surrounding El Nino's recent and future changes.
Main Methods:
- Review of recent observational studies.
- Analysis of theoretical climate models.
Main Results:
- El Nino's properties depend on background climate state and random disturbances.
- Observed changes in El Nino may stem from random disturbances or decadal climate variations.
Conclusions:
- Global warming's influence on decadal climate variations affecting El Nino cannot be ruled out.
- Further research is needed to fully understand the interplay between global warming and El Nino dynamics.
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