El Nino And La Nina Frequency Of Appearance Is Influenced By The Pacific Decadal Oscillation

El Nino And La Nina Frequency Of Appearance Is Influenced By The Pacific Decadal Oscillation
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For decades, specialists have observed the aspects of El Nino and La Nina phenomena which are equally impacting the world’s climate. However, for years now, meteorologists and hydrologists have been puzzled by these two phenomena. Recently, a study elucidates a few of the mysteries that characterize El Nino and La Nina, which, together form the ENSO (the El Niño Southern Oscillation).

El Nino has been discovered to be 300% more frequent in positive Pacific Decadal Oscillation

The new research has investigated the differences in frequency presented by the ENSO phase of oscillation that characterizes the North Pacific climate, also known as the Pacific Decadal Oscillation (PDO).

The scientists have gathered and analyzed the data of 19 models created by the CMIP5 (the Coupled Model Intercomparison Project Phase 5). According to Zheng Fei, a researcher at the Chinese Academy of Sciences and one of the study’s authors, the CMIP5 simulations allowed the researchers to examine the way the Pacific Decadal Oscillation inflect the approach of ENSO.

“For the first time, we have quantitatively demonstrated that El Nino is 300 percent more frequent than La Nina in positive PDO phases, and 58 percent less frequent in negative PDO phases,” admitted Zheng Fei.

The study’s methods can be used to predict El Nino and its influences on the global climate

Scientists believe that their study is of a great importance as it may help other researchers comprehend the events that influence the appearance of the ENSO phenomenon.

Besides, scientists have observed for a long time ago that ENSO is clearly influencing the whole planet’s weather, including precipitations, temperature, and winds.

Zheng and his team are very optimistic that their new findings will offer a better insight into how is ENSO working and influencing the global climate.

“Our study suggests that more attention should be paid to the processes outside the equator when attempting ENSO predictions to provide reliable warning of climate extreme events and avoid potential economic loss,” concluded Zheng Fei.


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Jeffrey likes to write about health and fitness topics, being a champion fitness instructor in the past.

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