The El Niño/Southern Oscillation (ENSO) is a natural climate phenomenon that has worldwide impacts. It alternates between two phases — the warm phase (El Niño) and the cold phase (La Niña) — that result from changes in the sea surface temperature and associated atmospheric circulation. This influences the hydrological cycle and global weather through teleconnections. In this web focus, we present a variety of original research, opinion and review pieces that highlight our current understanding of how climate change is affecting ENSO.
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