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Different types of El Nino have different effects on global temperature: May explain slowdowns in global warming

Date:
May 19, 2014
Source:
Wiley
Summary:
The El Niño–Southern Oscillation is known to influence global surface temperatures, with El Niño conditions leading to warmer temperatures and La Niña conditions leading to colder temperatures. However, a new study shows that some types of El Niño do not have this effect, a finding that could explain recent decade-scale slowdowns in global warming.
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The El Niño-Southern Oscillation is known to influence global surface temperatures, with El Niño conditions leading to warmer temperatures and La Niña conditions leading to colder temperatures.

However, a new study in Geophysical Research Letters shows that some types of El Niño do not have this effect, a finding that could explain recent decade-scale slowdowns in global warming.

The authors examine three historical temperature data sets and classify past El Niño events as traditional or central Pacific.

They find that global surface temperatures were anomalously warm during traditional El Niño events but not during the central Pacific El Niño events.

They note that in the past few decades, the frequencies of the two types of El Niño events have changed, with the central Pacific type occurring more often than it had in the past, and suggest that this could explain recent decade-scale slowdowns in global warming.


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The above post is reprinted from materials provided by Wiley. Note: Materials may be edited for content and length.


Journal Reference:

  1. Sandra Banholzer, Simon Donner. The influence of different El Niño types on global average temperature. Geophysical Research Letters, 2014; 41 (6): 2093 DOI: 10.1002/2014GL059520

Cite This Page:

Wiley. "Different types of El Nino have different effects on global temperature: May explain slowdowns in global warming." ScienceDaily. ScienceDaily, 19 May 2014. <www.sciencedaily.com/releases/2014/05/140519134834.htm>.
Wiley. (2014, May 19). Different types of El Nino have different effects on global temperature: May explain slowdowns in global warming. ScienceDaily. Retrieved August 31, 2015 from www.sciencedaily.com/releases/2014/05/140519134834.htm
Wiley. "Different types of El Nino have different effects on global temperature: May explain slowdowns in global warming." ScienceDaily. www.sciencedaily.com/releases/2014/05/140519134834.htm (accessed August 31, 2015).

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