Category Archives: PDO

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 event, the topic of the Pacific Decadal Oscillation or PDO … Continue reading

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Posted in El Nino Basics, ENSO, PDO | 77 Comments

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 that graph his projections started around 2010. He appears to … Continue reading

Posted in Forecasting, Hiatus in Global Warming, PDO, Temperature | 149 Comments

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 Waterloo study has found. But, I don’t think they are … Continue reading

Posted in Arctic, PDO | 67 Comments

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 lack of global warming was not the ‘biggest mystery in … Continue reading

Posted in Opinion, PDO | Tagged , | 172 Comments

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 published at WattsUpWithThat. This post includes an overview of the … Continue reading

Posted in Climate News, ENSO, Hiatus in Global Warming, PDO | 31 Comments

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 as “the pause.” and has been characterized as the “biggest … Continue reading

Posted in AMO, Hiatus in Global Warming, PDO | 213 Comments

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 dioxide” is mentioned in this article that cites Trenberth as … Continue reading

Posted in Climate News, PDO, Trenberth's missing heats | 419 Comments

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 in California” type things about a new law with good … Continue reading

Posted in Drought, PDO, Rainfall, Weather | Tagged , , | 121 Comments

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 7, 2013 post Week in review (Thanks, Judith.) From the … Continue reading

Posted in ENSO, Global warming, Hiatus in Global Warming, Ocean Heat Content, PDO, Trenberth's missing heats | 115 Comments

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 US, MU study finds COLUMBIA, Mo. – Meteorologists often use … Continue reading

Posted in PDO, Sea Surface Temperature, tornadoes, Weather | Tagged , | 48 Comments

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 of the Atlantic multi-decadal oscillation and Pacific decadal oscillation on … Continue reading

Posted in AMO, Climate sensitivity, PDO | Tagged , , | 28 Comments

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 Change (IPCC) claims that “radiative forcing” from human-emitted CO2 is … Continue reading

Posted in IPCC, Oceans, PDO | Tagged , , , , | 138 Comments

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 wildlife, the change in the global average is an absolutely … Continue reading

Posted in Al Gore, Climate data, PDO, UHI, Weather_stations | Tagged , , | 184 Comments

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 land temperatures”. The abstract is here and a preprint version … Continue reading

Posted in AMO, Berkeley Earth Surface Temperature, ENSO, PDO | 85 Comments

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 the future of the climate … I don’t think so … Continue reading

Posted in PDO | Tagged , , | 273 Comments

Does the Pacific Decadal Oscillation have predictive skill for global temperature?

Reader Eric Worrall writes: I was playing with Wood For Trees, looking at the relationship between Pacific Decadal Oscillation vs global temperature (Hadcrut 4), when the following graph appeared. The interesting thing is PDO in this graph appears to have … Continue reading

Posted in Climate data, PDO | Tagged , , , , , , , | 102 Comments

On Hartmann and Wendler 2005 “The Significance of the 1976 Pacific Climate Shift in the Climatology of Alaska.”

Note: this is a companion article for the story: The Guardian’s Suzanne Goldenberg takes a fossil fueled trip to a remote Alaskan village to tell us recent global warming caused it to sink – but that’s not the cause   … Continue reading

Posted in Arctic, PDO, Sea Surface Temperature | Tagged , , , , , , , | 16 Comments

Multidecadal Variations and Sea Surface Temperature Reconstructions

UPDATE: I’ve added a link at the end of the post for those interested in a copy of it in .pdf format. ########### OVERVIEW This is a somewhat lengthy blog post. There’s lots of information for newcomers, and there are … Continue reading

Posted in AMO, ENSO, PDO, Sea Surface Temperature | 29 Comments

The Shifts Hypothesis – an alternative view of global climate change

Guest post by Pavel Belolipetsky The IPCC, Bob Tisdale and others have presented hypotheses to explain 20th century warming. This article presents another. My co-workers and I call it the “Shifts” hypothesis. And we consider it to have advantages over … Continue reading

Posted in PDO | Tagged , , | 148 Comments

Coralline Algae and the Case for Natural Climate Change

Guest post by Jim Steele Director Sierra Nevada Field Campus, emeritus, San Francisco State University There was a very revealing 2012 paper demonstrating the power and interconnections of natural ocean oscillations, “Marine proxy evidence linking decadal North Pacific and Atlantic … Continue reading

Posted in PDO | Tagged , , , , , , , | 64 Comments