[OANNES Foro] Corals tie stronger El Niños to climate change

[Mario Cabrejos]

Science  09 Dec 2016:
Vol. 354, Issue 6317, pp. 1210
DOI: 10.1126/science.354.6317.1210


 


Corals tie stronger El Niños to climate change


·         Christopher Pala


Summary


A detailed, long-term ocean temperature record derived from corals on
Christmas Island in Kiribati and other islands in the tropical Pacific shows
that the extreme warmth of recent El Niño events reflects not just the
natural ocean-atmosphere cycle but a new factor: global warming caused by
human activity. Over the last 7000 years, El Niños, which warm the eastern
Pacific, waxed and waned. Then, during the 20th century, their intensity
began to climb. The trend is likely to continue, boding
ever-more-destructive El Niños in the future. The finding helps settle a
long-standing debate about the role of global warming in these events, which
had been hard to resolve because records are short and spotty in the remote
parts of the Pacific where El Niño hits hardest.

 



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