Global warming is boiling up extreme weather conditions in the Pacific. Severe El Nino and La Nina episodes are predicted for the upcoming years with doubled intensities and occurrences.
A new research published in the Nature Climate Change journal, by an international team of scientists, under the leadership of Cai Wenju from the Commonwealth Scientific and Industrial Research Organisation from Australia, stated that the severe La Nina events, forming in the Pacific would increase their activity, from one happening every 23 years to one happening every 13 years, at fault being the rising concentration of greenhouse gases in the atmosphere.
The study has been based on 21 climate models, and has been released a year after another team lead by doctor Cai, published a research saying that severe El Nino episodes would double their activity from one every 20 years to one every 10 years.
This means the Unite States will be facing more droughts, while floods will take over the west of the Pacific.
An alarming fact, that the planet will be dealing with more devastating weather episodes from one year to another, events that will deeply impact society, economy and the environment.
The El Nino oscillation will bring along major climate alternations. During the El Nino Years, east equatorial Pacific, warms mostly towards the west, it slows down the eastern winds and draws rain away from the eastern parts of Australia and southeastern regions of Asia and bringsmore drought.
When it comes to La Nina, the process is exactly the opposite. In the western Pacific, willstart heavy rains and floods but the weather remains dry in the east. During the La Nina years, the ocean usually absorbs more heat. La Niña is mostly known as the cold stage and El Nino as the warm stage.
These sort of extreme climate switches will trigger extreme El Nino episodes followed by extreme La Nina episodes, which should bring a lot of floods. World records accounted severe La Nina events in 1877, between 1972 and 1973 , 1988-1989 and 1998-1999, which was followed exactly a year later by a severe El Nino.
The planet warming is not systematic, the east equatorial Pacific, the place of birth of El Ninos, is warming much faster than the west Pacific, and both of them are heating much faster than the central Pacific,processes which are leading to extreme weather shifts.
Image Source: boston.com
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