El Niño phenomenon is found not only that the momentum is intense 'new type' has appeared

El Nino , where changes in sea surface temperature cause major changes in precipitation and temperature, is a serious problem that also affects the spread of diseases worldwide. The researchers who created the data of El Nino for a long time, the first in the world 'the last 400 years', have recently increased the 'new type of El Nino' and the momentum of the conventional El Nino has become intense Announced that

Higher frequency of Central Pacific El Niño events in recent decades relative to past centuries | Nature Geoscience

El Niño has rapidly become stronger and stranger, according to coral records

Impossible research produces 400-year El Nino record, releasing startling changes

El Nino is a phenomenon that occurs in spring and winter once a few years, and typically the sea surface temperature is higher than average in the eastern part of the tropical Pacific Ocean, and the global change in the weather is caused by the lower in the western part. call. When the El Nino phenomenon occurs in Japan, it tends to be cold summer and warm winter.

Since global climate change has been recorded relatively recently, it is very difficult to determine whether the data is limited and the modern climate is exceptional or not. It has been. So, research teams from the University of Melbourne and Mandy Freund and others at The Center of Excellence for Climate Extremes have developed an innovative method to create a record of the El Nino over the last 400 years using the coral reef core that inhabits the Pacific Ocean Did.


Artem Mizyuk · Photography

And, from the new data, researchers have found that the pattern of the El Nino phenomenon has changed significantly in recent years.

A new type of El Nino phenomenon has occurred frequently in the past few decades, and at the same time, the conventional El Nino phenomenon is also becoming more intense.

The typical El Niño phenomenon raises sea surface temperature in the eastern part of the tropical Pacific Ocean, while the new type El Nino phenomenon raises sea surface temperature in the Central Pacific Ocean. The new type of El Nino phenomenon is not stronger than the conventional one, but it has been confirmed in the years 2014-15 and 2018-19. On the other hand, the typical El Nino phenomenon has occurred at roughly the same frequency in the last 400 years.

Freund et al.'S work shows that by the end of the 20th century, the El Nino phenomenon that occurs in the Central Pacific Ocean has increased sharply. Also, although the number of El Nino phenomena that occur in the eastern Pacific Ocean is decreasing, those that occurred in 1982-83, 1997-98, and 2015-16 all had strong abnormal weather.

by alobos

'This finding will definitely change our understanding of the El Nino phenomenon. Changes in the El Nino phenomenon are thought to affect Australia, Southeast Asia and the United States in the form of extreme temperature and precipitation changes.' The researchers say.

in Science, Posted by darkhorse_log