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Thursday, November 5, 2015

Bob Tisdale's illusion and conspiracy theories: A Book Review

Sou | 2:32 AM Go to the first of 19 comments. Add a comment
Bob Tisdale's illusion is that global warming is caused by magic, or blobs, or El Niño. Anything but human activity. He's announced at WUWT that he has written a new book (archived here). He's called it "On Global Warming and the Illusion of Control Part 1". It's very long, running to 733 pages. You'll have to wade through 82 pages before you get to the first page of the first chapter. There are three chapters plus the 82 pages of introductory material.

Bob relies on the hard work done by climate scientists for much of his book, he picks bits he likes but ignores or rejects the bits he doesn't like. That is, he rejects all the science that confirms human-caused warming. For the most part, he doesn't understand the data he uses. Certainly he doesn't understand climate models. For the other much of his book, he relies on conspiracy theories dreamt up by him or other science deniers. What his book boils down to is:
  • Climate scientists are right, except when their science demonstrates that humans are causing global warming, and except when he can provide an alternative notion, usually involving a gigantic conspiracy of incredible proportions, or no alternative at all
  • Bob learnt lots about ENSO from Dr Kevin Trenberth, but doesn't believe him where it matters
  • According to Bob, the cause of global warming is hotter oceans (i.e. warming is caused by warming), or a magical bounce from the Little Ice Age with no cause, or the sun heating up the ocean (even though the sun's output has decreased a bit lately), or anything except human activity
  • Climate models are wrong - based on Bob not understanding the first thing about them
  • The IPCC is [insert conspiracy theory here] - based on Bob's denialist imagination.


A blog article or a book?


Bob's pdf file can't really be regarded as a book. It's short on scientific references and long on Bob's pseudo-scientific quackery. When he does refer to scientific papers, he's just as likely to dismiss them out of hand as "alarmist science fiction". His book can only be called a book because it's so long. It's just a giant blog article in pdf form, of the sort you'll read every day on denier websites. It contains quite a bit of argument by assertion, straw man fallacies, conspiracy ideation, and various other telltale techniques of climate science denial.



Bob's conspiracy theories


Here are some examples of Bob's conspiratorial notions:

It's just to scare you: The grandeur of weather is being used by politicians and activist scientists to bludgeon voters and to frighten the gullible.

Climate science is a devious plot, a hoax, a conspiracyBecause the objective of the UNFCCC treaty is to limit the emissions of man-made greenhouse gases, and because the goal of the IPCC is to prepare reports that supported the treaty, it safe to say the IPCC’s sole role is simply to write scientific reports that support the assumed need to limit greenhouse gas emissions. Hmmm. Do you think that focus might limit scientific investigation and understandings? [Note that the UNFCCC was prepared in 1992 as a response to human-caused climate change. The IPCC was created four years earlier, in 1988.]

Conspiracy theory: NOAA is fudging data: Not too surprisingly, when compared to the dataset NOAA used as a reference for “bias adjustments”, we discover that NOAA overcooked their adjustments. (More on that in a few moments.) [This is where Bob Tisdale argues that the limited set of night time marine temperatures, taken from a few ships around the world, are a better representation of sea surface temperature than the thousands of buoys with sophisticated, purpose designed, weather recording apparatus. That's nuts.]

On the very same page Bob denied that he believed in a climate conspiracy, right before he expounded another conspiracy theory: Unlike some persons, I believe in framing the evolution of the catastrophic anthropogenic global-warming movement as a logical progression…not as a conspiracy....The politicians found scientists to write those reports—so began the mutually beneficial relationship between climate scientists and politicians. The politicians wanted scientific support for their agendas and the scientists were more than willing to oblige because the politicians held the purse strings for climate research.

Bob claims the mainstream media is part of the climate hoax: Mainstream media have been more than willing to add their attention-grabbing sound bites to global-warming news, in an effort to increase viewer/reader numbers and pump up advertising revenues. Like the relationship between climate scientist and politician/climate-science funder, there is a mutually beneficial bond between climate scientists and mainstream media. Predictions of gloom and doom from climate scientists help sell newspapers and help keep viewers tuned in to their networks and websites, which help maintain or increase advertising revenues for the news outlets.

No denier worth his salt can leave out the money conspiracy: To assure that moneys were supplied from government coffers, needy scientists, with nowhere else to turn for their off-topic research, had only to include the terms global warming or climate change in their applications for research grants. Regardless of what field those scientists were studying, moneys flowed.

Bob tells a fib and weaves it into his money conspiracy: There’s a simple reason why climate modelers won’t include in their models those naturally occurring and naturally fueled processes that contribute to global warming or suppress it. It’s a conflict of interest. Plain and simple. If climate models included those naturally occurring and naturally fueled processes, long-term predictions of future global warming could very well drop to the point where politicians realize the moneys they’re spending on climate research would be better spent on adaptation. [He's wrong. Climate models are physical models. Of course they include internal variability. More on that below.]

Bottom line - it's one helluva giant conspiracy: Bottom line: When the promotion of global warming and climate change is viewed as a mutually beneficial relationship between politicians, climate scientists and the mainstream media, there is no need to frame it as a conspiracy.



Telling fibs is a "natural" human activity - if you're a climate science denier


Bob Tisdale tells a big fat lie: The IPCC has never realistically tried to determine if natural factors could have caused most of the warming. ...As a result of that political choice, there is little scientific research that attempts to realistically determine how much of the warming we’ve experienced is attributable to natural factors. 

The IPCC reports discuss natural variability and its features in considerable detail throughout. Scientists would be unable to distinguish human factors from natural factors if they didn't understand the natural factors affecting climate. Bob Tisdale lies, but that's only natural - he's a science denier. The chart below is just one of many examples littering the IPCC reports, in which scientists have done the research to "determine how much of the warming we've experienced is attributable to natural factors". (Since 1950 probably all of the warming is down to human activity.)




Bob Tisdale and haunting heat


Bob makes lots of mistakes when he writes about global warming. There's the big one, of course, which is his trademark. He thinks that global warming is caused by blobs and El Niños. It isn't. (The word "blob" appears 80 times in his book.) The current warming is caused by our activities - with the biggest contributor being all the waste CO2 we are putting into the air when we burn up long-buried fossil fuels.

At one point he misrepresents what has probably started to happen again now, with a possible change to the warm phase of the Pacific Decadal Oscillation (PDO) and probably the Interdecadal Pacific Oscillation (IPO). If this phase shift is happening, it would favour stronger El Niños and the surface would warm more quickly. Bob wrote some stuff about the second law of thermodynamics and how the oceans have been absorbing a lot of heat in the last few years, while the increase in surface temperature hasn't been as great (until the last couple of years). He was saying how the heat wouldn't pop back out of the ocean any time soon. Which is correct. Where he went wrong was when he wrote:
The second law of thermodynamics says the heat will flow from the water with the higher temperature to the water with lower temperature. The warmer waters that had been driven deep into the ocean will cool as the heat flows to the surrounding cooler waters, and the cooler waters surrounding it will warm. Eventually, the water temperatures would equalize. That’s why alarmist claims of the heat coming back to haunt us has no basis in reality. It has established (and would simply establish in the future) a slightly warmer background state of the oceans—nothing more.
First of all, the "alarmists" claim is well expressed by Rob Painting in an article he wrote at SkepticalScience.com:
So to answer the question posed in the title - will ocean heat come back to come to haunt us? Yes, but perhaps not in the way some might think. Heat buried in the deep layers of the ocean will not re-surface any time soon. Instead, when the subtropical ocean gyres spin down, they will no longer be efficiently removing heat from the tropical surface ocean. The transport of ocean heat to depths, and to the poles, will drastically slow down, and this will allow the surface of the tropical oceans to warm rapidly. That heat is very likely to haunt us.
 You see, with global warming the earth heats up. If the heat isn't going down into the ocean, then it will hang about and warm the surface. Warmer ocean surfaces means warmer land surfaces too. So the heat will "come back to haunt us" because the world as a whole is heating up, and won't stop as long as we keep adding CO2 to the air.

Now when a science denier doesn't even bother to read what "alarmists" are saying,  then what hope have they of understanding climate science, let alone presenting it accurately?

Bob Tisdale misuses and misrepresents climate models


Quite a lot of Bob's book is comparing CMIP5 model experiment output with observations. He devoted 93 pages to Chapter 2 Climate Models, 11 pages more than his introductory blurb before Chapter 1 began :D. However Bob doesn't understand CMIP5 models or how to use and interpret the output. So his arguments are baseless, meaningless waffle.

For one thing, he claims that models cannot be falsified, yet he spends an inordinate number of pages trying to "falsify" them. Of course they can be falsified. If the surface temperature projections from models were way off track from observations, then scientists would be looking to see what was happening in the real world and in the models to see what was causing the discrepancy. Even when observations are within the outer boundaries of model projections scientists have looked to see why they aren't right in the middle. And guess what - that's just what they've been doing. Scientists investigated the reasons for the so-called "pause" or "hiatus", which was a period this century when global mean surface temperature didn't rise as quickly as it had from the late 1970s to around 2000. They were looking at why observed temperature didn't rise as much as the modeled projections. (See also the seepage article). Some of it was because the estimated forcings in the models were too high. Some because of natural internal variability (the cool phase of the PDO). Yet the difference wasn't huge as you can see in the chart below.

Bob also weirdly claims that climate models weren't created to simulate our climate, and he claims they don't model natural variability (misrepresenting a 2007 article by Dr Kevin Trenberth). He wrote:
...climate models used by the IPCC for their assessment reports were not created with the intent of simulating Earth’s climate.
And a bit later:
In other words, climate models do not include naturally occurring processes that can cause global warming to occur on annual, decadal and multidecadal timeframes.
That's plain wrong. Of course they were built to simulate what's happening on Earth (though they are approximations). Of course they include naturally occurring processes. These are built in to the equations. Bob just doesn't understand climate models which, given how much he pontificates on the subject, is a damning indictment on him. What Dr Trenberth was pointing out was that the long term climate models were not good for short term regional-level predictions, or for determining with any confidence certain aspects of climate. As he said in the same article, but which Bob didn't quote:
The current projection method works to the extent it does because it utilizes differences from one time to another and the main model bias and systematic errors are thereby subtracted out. This assumes linearity. It works for global forced variations, but it can not work for many aspects of climate, especially those related to the water cycle. 

The CMIP5 climate models were developed to give scientists insight into climate, and to project what is likely to happen under different emission pathways. There are different models and different experiments for different purposes. Most CMIP5 model experiments include known forcings up to 2005. From 2006 onwards, estimated forcings were incorporated. If the actual forcings differ from what was put into the models, then the results will be expected to differ somewhat from the observed.

If you want to learn about climate models, there are some good references below.


If misuse of data is to be avoided...


Bob's "evidence" that the "IPCC has never realistically tried to determine if natural factors could have caused most of the warming" demonstrates that he hasn't properly read or understood the IPCC reports, which go into considerable detail about how scientists have been able to determine how much climate change can be attributed to natural forcings (such as solar and volcanic) and how much to anthropogenic forcings. It also demonstrates that he doesn't understand the difference between climate models and weather forecasts.
We know this is fact because the current generation of climate models—the most complex climate models to date—still cannot simulate naturally occurring ocean-atmosphere processes that can cause Earth’s surfaces (and the oceans to depth) to warm for multidecadal periods or stop that warming. 
He's wrong. Bob would do well to heed the warning in a paper describing climate models, Taylor12, where the authors write:
If misuse of the data is to be avoided, then it is also important to understand some of the fundamental limitations of the simulations produced by the models. Here four potentially complicating issues are briefly discussed.

And the four potentially complicating issues are listed and described:
  1. Unforced variability - won't line up in long term model experiments (see below)
  2. Climate drift and bias correction - "Below the seasonal thermocline, the ocean requires thousands of years to fully adjust to any change in external forcing. This means that the typical several-hundred-year CMIP5 control simulation, which attempts to determine the equilibrium climate for preindustrial conditions, is generally too short to eliminate residual drift (toward an eventual equilibrium). The drift may or may not significantly affect analysis of any particular aspect of the CMIP5 runs, but users should not prima facie assume the drift is inconsequential." 
  3. Climate noise and “downscaling.” - Bob picks areas out of the models, with no regard to downscaling limitations as described in Taylor12: "In general, careful researchers may wish to avoid consideration of downscaled information from the CMIP5 models unless they have become sufficiently aware of the limitations of both the global models and the downscaling methods."
  4. Multimodel ensemble -  "In general, users of CMIP5 output will have to become familiar with all the model differences and variations on the experimental conditions before attempting an explanation of the spread in simulation results."


Bob Tisdale naively and wrongly attributes discrepancies to model errors


Bob Tisdale says that the "models are wrong" because unforced variability, such as ENSO events, don't line up in time with what occurred. That's because he doesn't understand what he's playing with. The long term model runs that Bob Tisdale uses are not initialised with recent observations, so unforced variability won't line up except by pure coincidence. Bob must know that. He's been told often enough. But to admit that he understood this (if he were capable) would upset his fabrications about the models. The modeled temperature projections as shown by the CMIP5 ensemble mean do line up quite well with observations, as shown in the chart below, which shows projections out to 2050, and observations to include the 2015 year to date (to September):

Data sources: GISS NASA, KNMI Climate Explorer (CMIP5)

Bob would have done better if he'd paid particular attention to the section in Taylor12 on unforced variability (my emphasis and paras):
Unforced variability. In addition to responding to “external” forcing (attributable both to natural causes, such as volcanic eruptions, and to anthropogenic activities, such as fossil fuel burning), climate exhibits variations solely due to internal interactions within the complex nonlinear climate system. These unforced variations must be taken into account to sensibly analyze the CMIP5 output. Examples of quasi-regular internal climate variations of this sort are the El Niño events, the North Atlantic Oscillation (NAO), and, on shorter timescales, the Madden– Julian oscillation (MJO). There are, however, other variations occurring on a variety of time scales that may be much less regular (e.g., a record cold December).
A realistic climate model should exhibit internal variability with spatial and temporal structure like the observed. In the long-term simulations, however, the timing of individual unforced climate events will only by coincidence match observations. For example, the El Niño years in a “historical” climate simulation will rarely (and only by chance) coincide with years when El Niños have actually occurred. This is because the historical runs are initiated from an arbitrary point of a quasi-equilibrium control run, so internal variations (even if they were perfectly predictable) would not be expected to occur at the same time as those found in the observational record.
Analysts comparing model simulations with observations should take this expected discrepancy into account and not naively attribute it to model errors.
In contrast, in the AMIP simulations, sea surface temperatures are specified, based on observations, which guarantees that the occurrences of simulated historical El Niño events coincide with observations. In these runs it is possible to directly compare with observations a model’s atmospheric manifestations of El Niño conditions, but agreement will still be limited by atmospheric variability not tightly coupled to SSTs.

So Bob is wrong over and over and over again right throughout his new book. The current generation of climate models do simulate natural variability. The timing is not the same as the timing in reality, but that's because weather is chaotic. Climate model experiments include long term projections.  For those models, it's the multi-decadal projections that are important, not whether an ENSO event took place in 2015 or 2017. There are also shorter term experiments, where models are initialised with recent observations.

To demonstrate this point, scientists have published a paper where they selected model runs where by coincidence, ENSO events lined up with recent observations. Professor Lewandowsky, one of the authors, wrote how they found that:
When the models are synchronized with the oceans, they do a great job. Not only do they reproduce global warming trends during the last 50 years, as shown in the figure, but they also handle the spatial pattern of sea surface temperatures 
Bob didn't bother with learning about how to use the data he got for CMIP5. He mentioned Risbey14, but dismissed it writing:
Risbey et al. (2014) have noted a major flaw with the climate models used by the IPCC for their 5th Assessment Report—that they are “generally not in phase with observations”. Remarkably, they don’t accept that as a flaw.
Bob's wrong. It's not a flaw. As was pointed out above, long run projections do not expect to have internal variability timed synchronously with observations. When it is, it's pure coincidence. The long run projections are modeling climate under different emissions pathways, not weather. (You could say that the earth itself could be treated as if it were just one of the model runs.) As the authors of Risbey14 point out:
A key difference between a climate forecast and a climate projection is that the former attempts to account for the correct phase of natural internal climate variations whereas the latter does not and can not.

Bob Tisdale is well-versed in science fiction


Bob's ignorant pronouncements are typical of pseudo-scientists and science deniers. Decent researchers try to understand what they are dealing with before drawing conclusions.

As you'll have heard, extraordinary claims like the ones Bob Tisdale peppers throughout his book and various blog articles, require extraordinary evidence. Bob makes extraordinary claims but fails to deliver on the evidence.

It is Bob's ignorance that causes him to dismiss research that uses models to work out what is likely to happen as the world warms. For example, he wrote about a number of papers considering how ENSO events may change, dismissing them as "science fiction".  Bob is well-versed in science fiction. That's what he does. What he is not expert in is real science.


Bob averages model runs to hide regional variability


As pointed out above, long term climate model outputs can't and don't show the internal variability at the same time as it might be happening. They aren't initialised with recent observations. There's another thing that happens when you average the surface temperature output from multiple model runs. It's like with anything - you'll smear the regional variability.

Bob Tisdale makes this mistake throughout his book. Where there's a strong ENSO event happening, by averaging the model outputs, one result that might purely by chance show an El Niño at the same time, will be offset by another model output that might show cooler temperatures in the same region at that particular time.

What that means is that the bulk of Bob's book is worthless, since the bulk of it is showing observations of regions of the globe against an averaged set of model outputs.


Climate models are remarkably high quality, on par with NASA's Space Shuttle flight software


Professor of Computer Science, Steve Easterbrook, did some research on climate models, visiting four major climate modeling labs around the world. What he found will surprise most science deniers. He said in a TedX talk last year:
When I started this study, I asked one of my students to attempt to measure how many bugs there are in a typical climate model. We know from our experience with software there are always bugs. Sooner or later the machine crashes. So how buggy are climate models? More specifically, what we set out to measure is what we call “defect density” – How many errors are there per thousand lines of code. By this measure, it turns out climate models are remarkably high quality. In fact, they’re better than almost any commercial software that’s ever been studied. They’re about the same level of quality as the Space Shuttle flight software.


Bob has trouble with anomalies


I've written enough about Bob's silly book. He put in a lot of effort to reject science, but I have no intention of covering his 733 pages in detail. I'll just mention one more thing that might amuse you. Just like Anthony Watts, Bob has trouble keeping track of anomalies and baselines. He wrote:
Outdated reference periods for global temperature anomalies make it seem warmer
Actually, it's the reverse if anything. By using recent periods as the baseline, science deniers can forget that the world has warmed a heck of a lot since pre-industrial times. They can take delight in arguing that the world has only warmed 0.05 °C since the last time there was a record hot year (last year!). Or that it's "only" 0.7 C hotter than the 1961 to 1990 average. Or better yet, that the temperature of the lower troposphere (not the surface) is only 0.24 °C above the average for 1981 to 2010.

The chart below will surely throw Bob into a spin of denial. I've plotted the global mean surface temperature using as a baseline the period from 1851 to 1880. The year to date for 2015 is 1.1 °C above that average.  And it won't stop warming for some time to come.

Data source: Hadley Centre, UK Met Office


References and further reading


Taylor, Karl E., Ronald J. Stouffer, and Gerald A. Meehl. "An overview of CMIP5 and the experiment design." Bulletin of the American Meteorological Society 93, no. 4 (2012): 485-498. doi: http://dx.doi.org/10.1175/BAMS-D-11-00094.1 (open access) - this is quite easy to read and provides a really good overview of CMIP5 models, which were developed and used in the IPCC AR5 report.

Why trust climate models? It’s a matter of simple science: How climate scientists test, test again, and use their simulation tools. Article by Scott K. Johnson at Ars Technica

Risbey, James S., Stephan Lewandowsky, Clothilde Langlais, Didier P. Monselesan, Terence J. O’Kane, and Naomi Oreskes. "Well-estimated global surface warming in climate projections selected for ENSO phase." Nature Climate Change (2014). doi:10.1038/nclimate2310 (pdf here)

TEDx talk: Should we trust climate models? - Transcript and video of computer scientist Steve Easterbrook talking about climate models. Well worth reading and/or watching.

The 5 telltale techniques of climate change denial - article by John Cook on CNN

From the HotWhopper archives

19 comments:

  1. Fantastic review! Anything published by climate denialists is suspect for accuracy and honesty. He is apparently, also a "bully and a jerk" (read here) who considers himself an "important personality":

    http://climateconomysociety.blogspot.com/2014/01/the-story-of-my-visit-at-bob-tisdales.html

    I suspect that those who can't do science, or understand the science, or accept the results - choose to identify themselves with the connedspiracy crowd, seeking their own platform of utter nonsense and stupidity. You're review NAILED it. Nice job!

    ReplyDelete
    Replies
    1. Yes, he is a bully and a jerk. I discovered that when I questioned some of his reasoning on a blog - he went full ad hominem.

      In my opinion he is a fraud, nothing more.

      Delete
  2. The problem isn't that Tisdale writes all this pedantic bloat, the problem is that Google indexes it and so when people search on terms such as ENSO and El Nino they end up on WUWT and become horribly misinformed. It really becomes the blind leading the blind.





    ReplyDelete
    Replies
    1. -tisdale transforms google images. He does have a few resources I use.

      Delete
  3. People who end up at WUWT and *stay* were probably in search of someone to fool them from the moment they decided to grab their keyboard. To take such places seriously you have to be willing to disregard sources like NASA, NOAA, or any other scientific organization that reasonable people would expect to be credible. By that point you are already in conspiracy territory.

    ReplyDelete
  4. Sun-fuelled Blob Tisdale

    ReplyDelete
  5. (OT: Looks like archive.is has banned some countries from access. At least Finland has been banned for several months now. Any chance for moving to a less opinionated service like WaybackMachine..? They have similar manual archiving facility as well.. I would not like to improve wuwt ratings with any of my clicks.. )

    ReplyDelete
    Replies
    1. That is a nuisance for you.

      Wayback machine is clunky, sometimes has formatting problems, and takes more time than archive.is. And I can't link directly to particular points on the page like I do with archive.is.

      So no promises. Sorry. Can I suggest you do a google search and click the cache version (the arrow at the side)?

      Delete
    2. How about Web citation? Although the data is likely more secure in Island.

      Delete
    3. Maybe try a VPN like CyberGhost so you can access via a proxy server in another country?

      Delete
    4. Oh, I was thinking of webcitation when I commented. It's the one that's clunky to save pages on.

      I'll try to remember to link to the cache in the future (like this), as well as the archive.is version. Or use the wayback archive if it's not yet been cached.

      Delete
    5. Okay, thanks. I was not aware of that linking to a particular section of a page which obviously is neat. No need to make double work for me only a this does not appear to be more wide issue. I'll try that CyberGhost thing..

      Delete
    6. Apparently you can use services like Google Translate to act as a proxy.

      Try for example. Translation to Finnish

      Delete
    7. That's a great tip.

      I also found this:

      https://twitter.com/archiveis/status/623469280558981121

      And these:

      https://www.reddit.com/r/Finland/comments/3e456f/has_archiveis_been_banned_in_finland_and_if_so_why/

      https://www.reddit.com/r/KotakuInAction/comments/3e29vm/archiveis_possibly_banned_in_finland/

      Delete
    8. Detailed instructions are here:

      http://www.labnol.org/internet/google-proxy-server/28112/

      Delete
    9. Finnish translation of WUWT pages in archive.is by Google is.. Umm.. entertaining.. ;).. I think it even improves the information content of plain WUWT "discussions". :)

      Delete
  6. Scientists would be unable to distinguish human factors from natural factors if they didn't understand the natural factors affecting climate.

    Sadly, this doesn't counter the 'skeptic' argument, which is that the IPCC doesn't even try to distinguish between natural and human factors--they simply assume it's all down to us.

    It's pretty much impossible to argue with logic like this.

    ReplyDelete
  7. "It's very long, running to 733 pages."

    Oh, that stinks of:

    "Hmm. This suit smells of dead germans and cat piss, and is sturdy enough to both restrain a rutting wart hog and give me heat-stroke if the mercury climbs above 60 degrees, my good man".

    "Never mind the quality, feel the width my son! They don't make cloth like this anymore!"

    Phrase used to persuade you that quantity is more important than quality.

    ReplyDelete
  8. "Bob Tisdale tells a big fat lie: The IPCC has never realistically tried to determine if natural factors could have caused most of the warming. ...As a result of that political choice, there is little scientific research that attempts to realistically determine how much of the warming we’ve experienced is attributable to natural factors. "

    Seriously.... IPCC AR5 WGI dedicates a full chapter (ch 10) to detection and attribution.

    ReplyDelete

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