400 Year El Nino Record Shows Dramatic Recent Increase in Frequency & Intensity


Alex Wierbinski's picture

By Alex Wierbinski - Posted on 12 May 2019

 

ECO-CRASHING NEWS-OCEANS

Drilling Coral Cores
 Researchers dive down to corals to extract coral cores that will give us information about Earth's past climate, copyright Jason Turl.
Researchers dive down to corals to extract coral cores that will give us information about Earth's past climate, copyright Jason Turl.

 

Radical Recent Increases of El Nino Frequency & Intensity

Impossible research produces 400-year El Niño record, revealing startling changes,
University of New South Wales, May 6, 2019.

MAIN POINTS

400 Years of El Nino Observations
"...cores drilled from coral to produce a world first 400-year long seasonal record of El Niño events, a record that many in the field had described as impossible to extract."

Impossible? That Takes The El Nino Doc a Little Longer...
As a Ph.D. student, Dr. Mandy Freund formulated the novel approach that produced the 400-year record of El Niño events, .courtesy of the University of Melbourne.
As a Ph.D. student, Dr. Mandy Freund formulated the novel approach that produced the 400-year record of El Niño events, courtesy of the University of Melbourne..

Clear Recent Changes
"The 400-year record revealed a clear change in El Niño types, with an increase of Central Pacific El Niño activity in the late 20th Century and suggested future changes to the strength of Eastern Pacific El Niños."

More El Ninos
"We are seeing more El Niños forming in the central Pacific Ocean in recent decades, which is unusual across the past 400 years."

"...found there has been an unprecedented increase in the number of El Niños forming in the Central Pacific over the past 30 years, compared to all 30 year periods in the past 400 years."

More Intense El Ninos
"There are even some early hints that the much stronger Eastern Pacific El Niños, like those that occurred in 1997/98 and 2015/16 may be growing in intensity."

"...the stronger Eastern Pacific El Niños were the most intense El Niño events ever recorded, according to both the 100-year long instrumental record and the 400-year long coral record."

Fancy Analysis
"...until now, they had not been used to detect the different types of El Niño events."

 

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