Category Archives: PDO

Axel Timmermann and Kevin Trenberth Highlight the Importance of Natural Variability in Global Warming…

Posted on November 19, 2014 by Bob Tisdale

…and their recent interviews gave me fodder for a blog post that should be educational for many people. There were numerous oddities in a recent interview with Axel Timmerman and Kevin Trenberth.  Those are the primary topics of this post.  … Continue reading →

Posted in Alarmism, PDO, SST Update, The Blob, The Pause | 25 Comments

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

Posted on April 20, 2014 by Bob Tisdale

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 →

Posted in 2014-15 El Nino Series, El Nino-La Nina Processes, Model-Data Comparison SST, PDO | 47 Comments

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

Posted on January 17, 2014 by Bob Tisdale

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 mistakes … Continue reading →

Posted in CAGW Proponent Arguments, El Nino-La Nina Processes, PDO, The Pause | 37 Comments

Questions the Media Should Be Asking the IPCC – The Hiatus in Warming

Posted on October 3, 2013 by Bob Tisdale

UPDATE: Jo Nova introduced her cross post Six question the media should be asking the IPCC: It’s clear science journalists need some help. The IPCC are saying “The ocean ate my global warming” and most environment reporters just cut-n-paste this … Continue reading →

Posted in Atlantic Multidecadal Oscillation, IPCC SPM AR5, Model-Data Comparison SST, PDO | 42 Comments

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

Posted on June 18, 2013 by Bob Tisdale

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 Atlantic Multidecadal Oscillation, LSAT, PDO | 6 Comments

Multidecadal Variations and Sea Surface Temperature Reconstructions

Posted on May 14, 2013 by Bob Tisdale

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 Atlantic Multidecadal Oscillation, CAGW Proponent Arguments, El Nino-La Nina Processes, PDO, SST Dataset Info | 62 Comments

On Joe Bastardi’s post “Global temps in a Crash as AGW proponents Crash the Economy”

Posted on January 19, 2012 by Bob Tisdale

UPDATE 1 (January 20, 2012):  I revised the closing comment, and used strikethrough on the original version so that you can see the intent of the revision. ################################################################### This post examines only two sentences in Joe’s Bastardi’s post at WattsUpWithThat … Continue reading →

Posted in PDO | 25 Comments

Yet Even More Discussions About The Pacific Decadal Oscillation (PDO)

Posted on June 30, 2011 by Bob Tisdale

UPDATE July 2, 2011:  I’ve modified the wording of the second paragraph after Figure 4. INTRODUCTION I’ve written numerous posts that describe the Pacific Decadal Oscillation (PDO), what the PDO represents, and, just as important, what it does not represent. … Continue reading →

Posted in PDO | 36 Comments

Comments On “Easterbrook on the potential demise of sunspots”

Posted on June 17, 2011 by Bob Tisdale

See update under the heading of WHY WOULD GLOBAL TEMPERATURES DROP? The following are my comments on the post Easterbrook on the potential demise of sunspotsat WattsUpWithThat. MORE MISREPRESENTATIONS ABOUT THE PDO Don J. Easterbrook wrote: “The evidence consisted of … Continue reading →

Posted in PDO, Solar | 59 Comments

On The AMO+PDO Dataset

Posted on June 8, 2011 by Bob Tisdale

Including A Discussion Of Its Use In Wyatt el al (2011) REFER TO THE UPDATE AT THE END OF THE POST #################### UPDATE 2 (July 15, 2011): This update clarifies that my comments about Wyatt et al (2011) pertained only … Continue reading →

Posted in Atlantic Multidecadal Oscillation, PDO | 10 Comments