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…

On Don Easterbrook’s Updated Projection

Don Easterbrook has updated his projection graph. Unfortunately, he did not update the graph that I complained about a few weeks ago, shown on the left in Figure 1. In…

Claim: Dramatic thinning of Arctic lake ice cuts winter ice season by 24 days

Arctic lakes have been freezing up later in the year and thawing earlier, creating a winter ice season about 24 days shorter than it was in 1950, a University of…

Setting the record straight on ‘the cause of pause in global warming’

Guest essay by Don J. Easterbrook, Dept. of Geology, Western Washington University Last week in my post ‘‘The cause of pause in global warming,” I presented data showing that the…

Comments on the Nature Article “Climate Change: The Case of the Missing Heat”

UPDATE: I finished writing this post and published it at my blog Climate Observations about the same time that Don Easterbrook’s post Cause of ‘the pause’ in global warming was…

Cause of 'the pause' in global warming

Guest essay by Don J. Easterbrook, Dept of Geology, Western Washington University The absence of global warming for the past 17 years has been well documented. It has become known…

The journal Nature embraces 'the pause' and ocean cycles as the cause, Trenberth still betting his heat will show up

From the “settled science” department. It seems even Dr. Kevin Trenberth is now admitting to the cyclic influences of the AMO and PDO on global climate. Neither “carbon” nor “carbon…

California's new toilet police

Last Thursday in my local newspaper The Chico Enterprise-Record there was an editorial about saving water through bureaucracy: Editorial: Toilet police don’t want job. It was was of those “only…

Trenberth and Fasullo Try to Keep the Fantasy Alive

Trenberth and Fasullo published a paper “An Apparent Hiatus in Global Warming?” last week in the new online journal Earth’s Future. Judith Curry briefly introduced the paper in her December…

New study shows Pacific Decadal Oscillation and sea surface temperature drive US tornado strength

From the University of Missouri-Columbia, one more example of how natural variation has trumped the supposed forcing of CO2 to make ‘bad weather’. Pacific ocean temperature influences tornado activity in…

Chylek et al 2013 shows a linkage between US Southwest climate and AMO/PDO cycles

This paper suggests that the CMIP5 models’ (which IPCC relies upon) predicted US SW temperature sensitivity to the GHG has been significantly overestimated by about a factor of two. Imprint…

Climate change is dominated by the water cycle, not carbon dioxide

Guest essay by Steve Goreham Originally published in The Washington Times Climate scientists are obsessed with carbon dioxide. The newly released Fifth Assessment Report of the Intergovernmental Panel on Climate…

Unwarranted Temperature Adjustments and Al Gore's Unwarranted Call for Intellectual Tyranny

Guest essay by Jim Steele, Director emeritus Sierra Nevada Field Campus, San Francisco State University For researchers like myself examining the effect of local microclimates on the ecology of local…

On Muller et al (2013) “Decadal variations in the global atmospheric land temperatures”

I received an email yesterday morning advising me that Muller et al (2013) had been published. (Thanks, Marc.) The title of the paper is “Decadal variations in the global atmospheric…

Decadal Oscillations Of The Pacific Kind

Guest Post by Willis Eschenbach The recent post here on WUWT about the Pacific Decadal Oscillation (PDO) has a lot of folks claiming that the PDO is useful for predicting…