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No Evidence that Atlantic and Pacific Oscillations Exist

No Evidence that Atlantic and Pacific Oscillations Exist


Alex Wierbinski's picture

By Alex Wierbinski - Posted on 04 January 2020

 

Atlantic and Pacific Oscillations Lost in the Noise,
Penn State, January 3, 2020.

MAIN POINTS

PDO Does Not Exist
"The Atlantic Multidecadal Oscillation (AMO) and the Pacific Decadal Oscillation (PDO) do not appear to exist..."

Static
"Using both observational data and climate model simulations, the researchers showed that there was no consistent evidence for decadal or longer-term internal oscillatory signals that could be differentiated from climatic noise -- random year to year variation."

No PDO Evidence
"Given the current sophistication of climate models as seen in their ability to capture the El Niño/Southern Oscillation, we would expect to see consistent evidence for oscillations across a suite of climate models... We found no such evidence."

Nada-Ziltch
"...we found no other signals, no Pacific or Atlantic climate variability on decadal or longer timescales that could be characterized as a true oscillation. Such variability was essentially indistinguishable from random noise."

Killing the AMO
Atlantic Multidecadal Oscillation
Observing Our Own Massive Effects
"...the researchers showed that the apparent 40 to 50 year spectral peak sometimes associated with the AMO is actually an artifact of the slowdown in warming from the 1950s to 1970s. This warming was due to the buildup of sulfur "aerosol" pollutants that cool the Earth's surface. The passage of the Clean Air Acts in the 1970s removed the cooling effect and greenhouse gas warming increasingly dominated. The slowdown and subsequent acceleration of warming masquerades as an apparent "oscillation."

Human Created Weather Fluctuations
"Our study provides another line of evidence that purported decadal and longer timescale internal oscillation in climate that have been identified through analysis of observational data are in fact mostly a result of external influences like greenhouse gas and (changing) aerosol emissions by humans."

 

March 2019
HIGH SIERRA WEATHER Theory and Practices: ENSO, the MJO, and the PDO

 

Dec 2019
Warming Waters Making Pacific Decadal Oscillation, the "PDO," Less Predictable

 


Jan 2019
The Madden-Julian Oscillation Changing in Warming World

 

 

 


 

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research, disproves, Atlantic Multidecadal Oscillation, AMO, Pacific Decadal Oscillation, PDO

 

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