The blueprint for El Nino revealed

  • 6 years ago
A new study published this week by an international team of climate scientists revealed the key mechanisms behind El Nino climatic events.
The group used Korea as a base for the research.
Our Lee Seung-jae tell us the results of the study and what makes El Nino so chaotic and unpredictable.
El Nino, meaning 'The Little Boy' in Spanish,... refers to the large climatic event that causes a periodic warming in ocean surface temperatures across the central and east Pacific.
Climate scientists have long recognized that not every El Nino event is alike.
Some are weak, others are strong. They also occur in different parts of the Pacific,...
making it difficult to predict El Nino events.
However, a new study published this week by an international team of climate scientists led by Axel Timmermann, the Director of the IBS Center for Climate Physics at Pusan National University,... revealed that there's a hidden structure in the chaotic and unpredictable occurrence of El Nino events,... and that there are two types of El Nino events: Eastern Pacific events and Central Pacific events.

""It was always been thought of as chaotic. However, our study essentially identifies that there is much less chaos in there and that there's actually order in the sense that El Nino in the Eastern Equatorial Pacific and the Central Pacific are actually parts of two oscillatory nodes in the system."

A group of 40 climate scientists from 11 countries,... met from October last year at Pusan National University.
Analyzing climate observations and computer model simulations,...
the team discovered the mechanism behind El Nino's chaotic behavior.
When the upper tropical Pacific Ocean stores more heat, El Nino events tend to peak in the Eastern Pacific,... whereas a cooler upper ocean system leads to the development of Central Pacific El Nino events which are less closely linked to the seasons.
By running a simulation for different temperatures, wind and ocean current configurations,... the research team found the Eastern Pacific events occur every three to seven years,... while Central Pacific events tend to happen on average every two to three years.
Experts say while more comprehensive climate modeling studies need to be conducted,... scientists can now closely predict El Nino events,..
and they're set to study the blueprint of the La Nina events next.
Lee Seung-jae, Arirang News.

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