Internal Multidecadal and Interdecadal Climate Oscillations: Absence of Evidence Is No Evidence of Absence

Altogether, I conclude that the paper M20 is not advancing our understanding of the nature of multi- and interdecadal oscillations such as the AMO and PDO.

Climate Fish Tales

What’s Natural? Guest essay by Jim Steele   American folk lore is filled with stories of how Native Americans observed changes in wildlife and foretold future weather changes. I was fascinated…

Finding: North Pacific climate patterns influence El Nino occurrences

From the INSTITUTE OF ATMOSPHERIC PHYSICS, CHINESE ACADEMY OF SCIENCES and the “tail wagging the dog” department. For decades, the world’s leading scientists have observed the phenomena known as El Nino…

Solar Cycles and the Equatorial Trough: An Alternate Conceptual Model

by Michael Wallace, Hydrologist I have offered to write this guest essay to reflect recent talks I’ve presented to water resource professionals on hydroclimatology and Solar cycles. As an academic…

Study: U.S. climate closely follows Pacific ocean cycle known as the PDO

The Effects of the Pacific Decadal Oscillation and Atlantic Multidecadal Oscillation on U.S. Regional Weather A climate researcher at Cornell University, Remy Mermelstein has written an interesting and provocative paper…

Study finds: Middle atmosphere temperature in sync with the ocean PDO

Relationship between decadal variations in temperatures in the Pacific and the tropopause identified From the HELMHOLTZ CENTRE FOR OCEAN RESEARCH KIEL (GEOMAR) Water plays a major role for our planet not…

Has the PDO flipped?

Guest post by David Middleton Cyclical changes in the Pacific Ocean have thrown earth’s surface into what may be an unprecedented warming spurt, following a global warming slowdown that lasted…

Enthusiasm about a Double-Dip El Niño (?) And Global Warming

Guest Post by Bob Tisdale In this post we can learn from someone’s mistakes. The author of the post at Slate clearly misunderstands many aspects of El Niño and their…

Surprising PNAS paper: CO2 emissions not the cause of U.S. West Coast warming

The rise in temperatures along the U.S. West Coast during the past century is almost entirely the result of natural forces — not human emissions of greenhouse gases, according to…

The 2014/15 El Niño – Part 5 – The Relationship Between the PDO and ENSO

UPDATE: I’ve added NOAA’s description of the PDO index toward the end of the post, before the closing. # # # During the earlier discussions of the upcoming El Niño…