El Ninos: Their magnitudes and durations

Burl Henry *

Senior Engineer. IBM Corp (retired) Villanova, PA, USA.
 
Review Article
World Journal of Advanced Research and Reviews, 2023, 19(01), 165–167
Article DOI: 10.30574/wjarr.2023.19.1.1306
 
Publication history: 
Received on 25 May 2023; revised on 02 July 2023; accepted on 04 July 2023
 
Abstract: 
Between 1900 and 2022, there have been 35 El Nino warming events recorded. An examination of the temperature rise caused by those events has shown that they occurred within the range of 0.029 – 0.54 Deg. C, with those of longer duration generally having the higher temperatures.  Their median maximum temperature value was 0.29 Deg. C, and their average value was 0.26 Deg. C.
In all but four instances, they were ended because of the injection of cooling volcanic Sulfur Dioxide (SO2) aerosols into the stratosphere by a VEI4, or larger, volcanic eruption.  The exceptions were due to increased levels of industrial SO2 aerosol emissions. 
This information can be used to judge whether future El Ninos fall within the normal range, or not, etc.
 
Keywords: 
El Ninos; Volcanic effects; Climate Change; SO2 aerosols
 
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