Apparently, one of the proudest achievements of the website SkepticalScience is their “Down the Up Escalator” gif animation. They prominently display it in their right sidebar. The intent of the animation is to show that global temperature anomalies can flatten or cool over decadal or shorter periods while warming over the long term.
The first version was created using the Berkley Earth Surface Temperature (BEST) land surface air temperature dataset. That, of course, made SkepticalScience appear two-faced, because the papers associated with the BEST dataset had not yet appeared in any peer-reviewed scientific journals and SkepticalScience downplays any research efforts that haven’t been peer reviewed.
ONE OF THE TRENDS IN THE REVISED ESCALATOR IS MISREPRESENTED
Bogus Escalator
In an effort to distract from their duplicity, SkepticalScience revised and reissued the animation (modified screen cap above), using the average of the GISS LOTI, HADCRUT4, and NCDC land surface air plus sea surface temperature anomaly datasets. If you were to click on the mini “Escalator” animation along the right-hand side of their main page, you’re brought to the updated GISS-, UK Met Office- and NCDC-based Escalator. SkepticalScience describes “The Escalator” animation as (my boldface):
Average of GISS, NCDC, and HadCRUT4 monthly global surface temperature anomalies from January 1970 through August 2012 (green) with linear trends applied to the timeframes Jan ’70 – Oct ’77, May ’77 – Dec ’85, Jan ’86 – June ’94, Nov ’94 – Dec ’00, Jan ’01 – Aug ’12.
You’ll note that they’re now calling it “The Escalator”—no longer calling it the “Down the Up Escalator”. Yet each of the steps in their escalator clearly shows a short-term trend that’s flat or cools slightly.
SkepticalScience misrepresented the trend of the “fourth step”. The time period they selected is November 1994 to December 2000. As it turns out, the only dataset that shows a flat trend during that period is the GISS Land-Ocean Temperature Index (LOTI). Both HADCRUT4 and NCDC have significant warming trends from November 1994 to December 2000 at about 0.08 to 0.09 deg C per decade. The average of the three datasets is approximately 0.06 deg C/decade, and that is a significant warming trend.
Actual Linear Trends During Fourth Step of Escalator
How significant is that 0.06 deg C per decade trend? It’s comparable to the trend in global surface temperatures since 1880.
GISS LOTI Global Surface Temperature Anomalies Since 1880
The following animation will give you an idea what “The Escalator” would look like if SkepticalScience had used the real linear trend for the fourth step. Depending on your browser, you may need to click on the following gif animation.
The Escalator With Actual Linear Trends
A COUPLE OF NOTES
As noted in my WUWT-TV presentation “The Natural Warming of the Global Oceans”, “The Escalator” is an exercise in cherry-picked start and end dates. Proponents of anthropogenic global warming will incorrectly cite “The Escalator” during my blog discussions of ENSO-related upward shifts in Atlantic-Indian-West Pacific (90S-90N, 80W-180) sea surface temperature anomalies. (In recent years, I typically present that dataset as the “Rest-of-the-World”, because I usually now start with the East Pacific data, which shows no warming over the entire 30-year term of the satellite era.) When the disciples of SkepticalScience link “The Escalator”, they are simply trying to distract from the process-caused shifts. Those natural processes were described in the WUWT-TV presentation and detailed with numerous datasets in my book Who Turned on the Heat?
Rest of the World Sea Surface Temperature Anomalies With Linear Trends
The above graph was presented in the post Does The Sea Surface Temperature Record Support The Hypothesis Of Anthropogenic Global Warming?
Proponents of anthropogenic global warming have another, related, inconsequential complaint about my research. They claim the decade-long time periods between the 1986/98/88, 1997/98 and 2009/10 El Niño events are too short for the trends to be significant. Curiously, when SkepticalScience is trying to make a point, they have no trouble presenting a series of decadal trends, and when SkepticalScience is trying to mislead their followers, they have no trouble misrepresenting the trend for a shorter 6-year period. Apparently, linear trends over periods as short as 6 years do have significance. Looks like another example of the double standards of the proponents of anthropogenic global warming.
In the next few days, I’ll present PBS’s sleight of hand about “The Escalator” when they presented it in their Frontline report Climate of Doubt. They were pretty blatant about it.
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@ur momisugly Richard Courtney, Gail Combs,
Thanks for the helpful replies.
D Böehm says:
November 26, 2012 at 2:15 pm
renewableguy asserts:
“CO2 has been proven to be the culprit in our warming earth climate.”
However, that is a completely baseless assertion. Nothing of the sort has ever been “proven”.
The global warming trend since the LIA is exactly the same, whether CO2 was 280 ppmv, or 394 ppmv. There is no acceleration of the [completely natural] warming trend. Therefore, CO2 has no measurable effect. None at all.
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Ignoring what the IPCC says on the matter is significant. How are they all wrong? RG
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RG says: “You can convince me with overwhelming evidence.”
Absolutely false. I have proven that RG is impervious to logic. That is typical of a religious True Believer. Nothing will convince RG that he worships a false god. Glaciers could once again flow over Chicago a mile thick, and RG would still believe the nonsense that CO2 causes any measurable global warming.
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So what are today’s conditions like? Changes in both the orbit and tilt of the Earth do indeed indicate that the Earth should be cooling. However, two reasons explain why an ice age is unlikely:
1. These two factors, orbit and tilt, are weak and are not acting within the same timescale – they are out of phase by about 10,000 years. This means that their combined effect would probably be too weak to trigger an ice age. You have to go back 430,000 years to find an interglacial with similar conditions, and this interglacial lasted about 30,000 years.
2. The warming effect from CO2 and other greenhouse gases is greater than the cooling effect expected from natural factors. Without human interference, the Earth’s orbit and tilt, a slight decline in solar output since the 1950s and volcanic activity would have led to global cooling. Yet global temperatures are definitely on the rise.
RG
#########################################
If RG has any testable, verifiable, empirical evidence showing in a cause and effect manner that a rise in CO2 causes a corresponding rise in temperature, I challenge him to produce it. If there was any such evidence, skeptics would be pounded over the head with it 24/7/365. In fact, there are no testable, verifiable, empirical measurements showing conclusively that X amount of CO2 causes Y rise in global temperature. None — RG’s baseless assertions notwithstanding.
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For now I’ll let you read it. If you want to further discuss this, I’ll do this in a seperate post.
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Next, RG says: “…co2 has been narrowed down by eliminating the other possible causes.”
Complete nonsense. That is nothing but the old Argumentum ad Ignorantium logical fallacy; the argument from ignorance, so beloved of climate alarmists: “Since I can’t think of any other reason, then it must be because of CO2.” Those ignorant alarmists disregard the oceans, the sun, Miklanovitch cycles, albedo, clouds, and many other possible causes, and instead zero in on the one thing that lacks any measurable evidence; CO2. Theirs is religious-based ignorance, and nothing any rational person says will make a dent in RG’s pseudo-scientific True Belief.
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RG
co2 has a measured amount of radiative forcing and is at the top of the list of ghg’s that effect our climate. Maybe that’s not good enough for you I suppose. If I’m wrong then so are 98% of the climate scientists.
http://en.wikipedia.org/wiki/IPCC_list_of_greenhouse_gases
RG
Below are the natural mechanisms for variation of cliamte. The IPCC has ruled out these natural changes as the reasons for our climate change temperature. RG
http://en.wikipedia.org/wiki/Attribution_of_recent_climate_change
There are also natural mechanisms for variation including climate oscillations, changes in solar activity, variations in the Earth’s orbit, and volcanic activity.
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Finally, RG posted a chart that purports to show that declining cloud cover causes global warming. But look closely at the chart. It shows that ∆clouds are the result of ∆T. Strike three.
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Read my last post
renewableguy says:
Your comment is awaiting moderation.
November 26, 2012 at 3:45 pm
http://www.skepticalscience.com/global-cooling-january-2007-to-january-2008.htm
Did global warming stop in 1998, 1995, 2002, 2007, 2010?
The escalator was made in response to the global warming has stopped. Having participated for several years in these kinds of conversations, the global warming has stopped has come up endlessly. The escalator is a great illustrator of that warming does not have a continuous upward slope. THere even may be a slight downward slope for awhile.
MikeN says:
November 26, 2012 at 9:58 am
RichardM, SkS does not accept that their is a flattening of temperatures.
I actually don’t think so either. The strong El Niño of 1998 is why people can go back so far and claim no warming. If you treat that as an outlier then the warming likely continued until 2005 or 2006. At that point it start cooling. The El Niño of 2010 happens to disguise the cooling in the same manner as the 1998 one did for warming. So, if one again treats that as an outlier we have warming until 2006 and then cooling. Hence, temps are not flat, they are cooling.
Interestingly, this matches the PDO perfectly and nothing else is required to explain temps for the last 100 years. I won’t even bring up the cooling adjustments to historical temps that are likely too large, or the stronger Sun of the 20th century. The bottom line is there was probably a little warming during the last 2 warm phases of the PDO with slightly less cooling during the cool phases.
Don’t even get me started on climate models. They are worthless for any big picture stuff.
And, until climate science starts looking at the cooling effect of GHGs they will forever look like 2nd rate scientists.
Gee Bob,
I’m about as Skeptical as the next man, and usually admire your work.
But all this fuss about one slightly crooked step in an upward series of steps?
http://i46.tinypic.com/2gyd91g.jpg still looks like a staircase to me, albeit a roughly built one.
renewableguy says: @ur momisugly November 26, 2012 at 12:13 pm
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
First have you watched Bob’s videos? He explains ENSO very well so they are well worth watching
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
…There is an inherent level of risk associated with moving forward with enormous amounts of co2 being emitted into the atmosphere….
_________________________________
No there is not. The log curve shows we are at the point of vastly diminishing returns, C3 plants are no longer on the verge of starvation. Heat is uncomfortable but COLDS KILLS! Also based on the past history of earth and the Milankovitch cycles, Solar Insolation is already low enough to trigger glacial onset. For the last 8,000 years, the Earth has been cooling at 0.25°C per thousand years. See In defense of Milankovitch
In otherwords CO2 is PREVENTING the onset of the next ice age according to Ruddiman.
Even Joe Romm over at Climate Progress at one time stated:
Absent human emissions, we’d probably be in a slow long-term cooling trend due primarily by changes in the Earth’s orbit — see Human-caused Arctic warming overtakes 2,000 years of natural cooling, “seminal” study finds…
A new paper from Markonis and Koutsoyiannis shows orbital forcings signal in proxy and instrumental records: WUWT discussion
Vostok graph:Temp, CO2, CH4, O18 & solar Insolation (present on left) Note Insolation, the bottom brown curve is headed DOWN.
Insolation past million years (present on right)
The Role of Solar Activity on Holocene Glacier Length Variability in the swiss Alps Hormes, A., Beer, J. and Schlüchter, C., 2006: A geochronological approach to understanding the role of solar activity on Holocene glacier length variability in the Swiss Alps. Geogr. Ann., 88 A (4): 281–294.
renewableguy says:
November 26, 2012 at 4:56 pm
Did global warming stop in 1998, 1995, 2002, 2007, 2010?
None of the above. It depends on the data set, but on three data sets below, it is sometime in 1997 that the slope is 0 for all practical purposes. (It is actually very slightly negative so no one can accuse me of stretching the truth.)
1. HadCrut3: since April 1997 or 15 years, 7 months (goes to October)
2. Sea surface temperatures: since March 1997 or 15 years, 8 months (goes to October)
3. RSS: since January 1997 or 15 years, 10 months (goes to October)
See the graph below to show it all.
http://www.woodfortrees.org/plot/hadcrut3gl/from:1997.25/trend/plot/rss/from:1997.0/trend/plot/hadsst2gl/from:1997.1/trend/plot/hadcrut3gl/from:1997.25/plot/rss/from:1997.0/plot/hadsst2gl/from:1997.1
RG says:
“Ignoring what the IPCC says on the matter is significant. How are they all wrong?”
Another assertion, and an appeal to an authority that has been shown to be consistently wrong.
Next, RG says: “The IPCC has ruled …” Enough with the nonsense. The IPCC cannot ‘rule’ on science. They have been shown to be consistently wrong. “ruled”, heh. As if.
The entire CO2=CAGW scare is based on evidence-free assertions. There are no empirical measurements showing that ∆CO2 causes ∆T. None. The only real world evidence shows exactly the opposite relationship.
As usual, RG cannot produce any testable measurements that support his belief system. If something can’t be measured, it is nothing but a conjecture; a belief-based opinion. An evidence-free assertion. That works fine at pseudo-science blogs like SkS and RealClimate. But it fails at the internet’s “Best Science” site. What RG is peddling here is his belief.
Wake up, RG. The UN/IPCC is running a scam. And credulous believers like you are falling for it. They even admit it:
“One must say clearly that we redistribute de facto the world’s wealth by climate policy. One has to free oneself from the illusion that international climate policy is environmental policy. This has almost nothing to do with environmental policy anymore”
~ Ottmar Edenhofer, Co-Chair, UN/IPCC, WG-3
D Böehm says:
November 26, 2012 at 12:51 pm
….The planet has warmed at the same rate for hundreds of years.
____________________________
And that is of course the key. As Gerald Roe and Nigel Calder have pointed out it is the CHANGE in the rate of change that is the critical parameter. As Mr Calder put it
And so far we have had a 15 year change in the rate of change and the expected El Niño has fizzled into a neutral expected to last all winter.
I’m actually curious as to how Bob can provide error bounds when the only data he has to work with has none.
Any answers KR?
DaveE.
Greg House says:
November 26, 2012 at 1:20 pm
….which means that you do not know any, and indicates that probably none exists, which means that that your warming “radiative forcing caused by CO2″ is a pure fiction, unproven scientifically.
___________________________________
No it means I no longer have access to a lab to verify an EXPERIMENT THAT HAS BEEN PERFORMED by others. If you want to verify the experiment there it is all nicely written-up. All you have to do is shell out the money for the gases, pyrometers, and other equipment.
Please let us know how the result come out.
renewableguy says:
November 26, 2012 at 1:26 pm
Its such a short time interval, that to say the ocean won’t warm anymore I think is premature…
>>>>>>>>>>>>>>>>>>>>>>>>>>>>
There are several factors that seem to indicate a shift change in the weather patterns. The 15 year halt in SST is just one of them.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Real Climate brings out a study showing the skin effect of heating on the ocean. There is clear evidence that the skin effect helps to heat the oceans.
That is absolutely hilarious. 400 ppm of a gas vs zillions of gallons of water covering 70% of the earth – it brings to mind Bambi Meets Godzilla
Have you ever bothered to look at the relative energy of the sun’s spectrum vs the earth’s? graph or WHAT wavelengths the majority of the energy radiates? graph
And while you are at it read: THE ACQUITTAL OF CARBON DIOXIDE by Jeffrey A. Glassman, PhD
SS has an agenda that is not backed by science, but rather by wishful thinking.
They have this great propensity to change posts, to then ban all posts that are backed by published literature.
I have been there, watched, was banned. Even tho my posts were linked to published literature, it did not fit the political agenda.
Anyone who goes to SS for information is doomed to failure and certainly has no understanding of the dynamics of climate.
Werner Brozek says:
November 26, 2012 at 5:39 pm
renewableguy says:
November 26, 2012 at 4:56 pm
Did global warming stop in 1998, 1995, 2002, 2007, 2010?
None of the above. It depends on the data set, but on three data sets below, it is sometime in 1997 that the slope is 0 for all practical purposes. (It is actually very slightly negative so no one can accuse me of stretching the truth.)
1. HadCrut3: since April 1997 or 15 years, 7 months (goes to October)
2. Sea surface temperatures: since March 1997 or 15 years, 8 months (goes to October)
3. RSS: since January 1997 or 15 years, 10 months (goes to October)
See the graph below to show it all.
http://www.woodfortrees.org/plot/hadcrut3gl/from:1997.25/trend/plot/rss/from:1997.0/trend/plot/hadsst2gl/from:1997
#################################
15 years is to short a time actually. Notice the high uncertainty. And yet overall the temperature data bases show warming.
all of them are 1997 to 2012
GISS 1997 to 2012
Trend: 0.92 ±1.40 °C/century (2σ)
NOAA
Trend: 0.49 ±1.32 °C/century (2σ)
Hadcrut3
Trend: 0.12 ±1.42 °C/century (2σ)
Hadcrut4
Trend: 0.58 ±1.36 °C/century (2σ)
Best Land only
Trend: 1.82 ±2.43 °C/century (2σ)
NOAA land only
Trend: 1.54 ±2.21 °C/century (2σ)
RSS
Trend: 0.06 ±2.49 °C/century (2σ)
UAH
Trend: 1.06 ±2.52 °C/century (2σ)
Trend: 1.06 ±2.52 °C/century (2σ)
Trend: 1.06 ±2.52 °C/century (2σ)
CO2 is significant enough that we will miss the next ice age. enough more and we will completely deglaciate the earth.
Figure 3 examines the climate response to various CO2 emission scenarios. The green line is the natural response without CO2 emissions. Blue represents an anthropogenic release of 300 gigatonnes of carbon – we have already passed this mark. Release of 1000 gigatonnes of carbon (orange line) would prevent an ice age for 130,000 years. If anthropogenic carbon release were 5000 gigatonnes or more, glaciation will be avoided for at least half a million years. As things stand now, the combination of relatively weak orbital forcing and the long atmospheric lifetime of carbon dioxide is likely to generate a longer interglacial period than has been seen in the last 2.6 million years.
renewableguy,
Who are you trying to convince with your assertions? The relationship between CO2 and temperature is not what you believe it to be. And the UN/IPCC has been flat wrong.
Really, you are arguing like a Jehovah’s Witness. Scientific observations falsify your beliefs, but you don’t give up, do you? Religious believers are like that. Facts don’t matter; emotion is everything.
You can convince me with overwhelming evidence. RG
____________________________
I sure hope you are young because I am fairly sure Mother Nature has some very nasty surprises in store after the next few decades and that way you will have plenty of time to change your mind. China and India will survive because they are practical. The west, unless it gets its act together and quits trying to milk all the wealth out of the middle class with the CAGW con is in for a very nasty time. Thanks to the utter stupidity of politicians we now have no strategic grain reserves in the USA. The EPA wants to shut down 42% of our electrical supply. We have little manufacturing left and enormous debt. The UK already has 70% of their population suffering from fuel poverty and thousands of extra deaths each winter as a result. All it is going to take for some major world crisis is really cold weather and failed crops.
I suggest you look up Dansgaard-Oeschger Event, Heinrich Event, Bond Event, and “1/2 Bond Event” Oh, and do not forget to include the social collapse and famine that follow.
It is not warm temperatures that are a problem but cold and history proves it.
renewableguy says:
November 26, 2012 at 6:41 pm
Thank you. So within the error bars, every single one of the data sets could be 0 since 1997. Perhaps the world should wait a few more years before spending a huge amount of money that may not be necessary. Sixteen years of no change is not something that should be ignored, especially since no model predicted it.
David A. Evans – “I’m actually curious as to how Bob can provide error bounds when the only data he has to work with has none.”
By examining the residuals of whatever fit is applied (linear, stepped, etc.) against various noise models.
White noise isn’t a good estimate – temperatures in successive months are highly autocorrelated with each other (if one month is high/low wrt averages, the next month is likely to be high/low as well). One of the simplest models is a first-order autoregressive, AR(1), where autocorrelation at lag “j” is p(j) = phi(j), with “phi equal to the autocorrelation coefficient.
Temperature data residuals, however, don’t fit a simple AR(1) model very well (more autocorrelation than predicted by the AR(1) model) – an ARMA(1,1) model seems to be much better (http://www.maths.qmul.ac.uk/~bb/TS_Chapter4_6.pdf). At the core, however, the noise estimation is found from the residuals of an arbitrary fit to the data, encompassing the random variation around trends.
Noise estimations will be roughly identical regardless of linear, polynomial, or step fits – the variations around that. As long as the residuals have an approximately normal distribution your fit is sufficient to estimate the noise model.
Another basic method is to look at the standard deviation of the values for temperature, and to draw a cut-off for significance relative to the stabilization of that standard deviation with increasing time periods. For GISTEMP the standard deviation stabilizes at ~43 years (http://bartonpaullevenson.com/30Years.html) – the World Meteorological Organization (WMO) long ago chose 30 years as sufficient relative to the standard deviation of the noise (it’s dropped enough) to actually pick a trend.
Identifying the noise allows you to estimate the likelihood of finding a particular trend due to _noise_ rather than signal, a random fit to variations. Short periods with less trend mixed in with the noise are less certain (in identifying the trend) than longer periods.
—
It’s also worth looking at the Akaike information criterion (AIC) for the fit (http://en.wikipedia.org/wiki/Akaike_information_criterion) – the more parameters you are trying to fit, the higher the uncertainty of that fit. This is basically an Occams razor measure – more complex models require more data to be certain of. In that respect I’ll just point out that the AIC of a linear fit is much lower, and therefore more certain, than a multi-step fit with numerous parameters for each linear segment and their change points.
Camburn says:
November 26, 2012 at 6:33 pm
Anyone who goes to SS for information is doomed to failure and certainly has no understanding of the dynamics of climate.
They seem to have some company!
See: http://principia-scientific.org/supportnews/latest-news/71-the-courts-hans-jelbring-and-the-kiwis-bring-joy-for-greenhouse-gas-deniers.html
“Weaver, the IPCC’s chief climate modeler, has fallen foul of court rules because he, just like Mann, has been timed out for failing to advance his case since since it was filed in February 2011. This boils down to a bizarre refusal to comply with court rules to show what’s behind his science.”
Gail Combs says:
November 26, 2012 at 5:59 pm
“No it means I no longer have access to a lab to verify an EXPERIMENT THAT HAS BEEN PERFORMED by others. If you want to verify the experiment there it is all nicely written-up. All you have to do is shell out the money for the gases, pyrometers, and other equipment.”
==========================================================
You have neither presented a description of a scientific physical experiment proving CO2 causing warming nor a link to it, so you apparently have nothing. Zero. Exactly like other warmists I talked to on various blogs.
Your “radiative forcing of CO2” is apparently a fiction. No, wait, CO2 does block some portion of solar IR thus contributing to COOLING, so it can indeed be seen as a “cooling forcing”, but apparently no way it’s “back radiation” can warm a warmer Earth surface.
@ur momisugly renewable guy
In response to my query you wrote,
Are you saying the sun’s variance causes temp fluctuations?
Further, you write,
The two statements are interesting. Most warmist literature I’ve read consider the energy from the sun as relatively constant. As to the oceans, once it starts emitting more energy, what causes it to stop and then start absorbing more?
The idea that the earth calls a “time out” and takes a break without an adequate description of the mechanism can be regarded as nothing more than a convenient fiction.
The speed of light is important because …. once the quasi equilibrium was established, the earth’s IR emissions increases. It wouldn’t decrease if the CO2 was sending all that energy back to the earth. It would constantly increase. Think about it for a minute, instead of regurgitating inanities.
The escalator analogy is a more revealing one than SkS are probably aware. If you stay on the escalator (as for example a particle of dirt might) you always end up back where you started. In fact you (almost) endlessly cycle up and down.
It is only by stepping off the escalator that you can escape this cycling.
One more ” slayer “, Greg House is back again with his no back radiation nonsense. Mods, can we put a stop to these kind of posts from the slayers?
[then who would be next and where do we stop? You are not forced to respond to his or any post and we are tolerant of opinions here . . mod]
Alex Heyworth says
It is only by stepping off the escalator that you can escape this cycling.
Henry says
true. that was funny. pity renewable guy has gone asleep now.
But fun aside,
here are some graphs that put our current cycle on a wider scale:
http://wattsupwiththat.com/2009/12/09/hockey-stick-observed-in-noaa-ice-core-data/
people like renewable guy don’t want to look further than their noses.
within this, looking at energy-in, as it happened over the past 40 years, I predict temperatures to be falling, with more wind, more storms and more snow, and more extreme cold.
This is because according to my calculations we are now near the bottom of the 90-100 year weather cycle.
http://blogs.24.com/henryp/2012/10/02/best-sine-wave-fit-for-the-drop-in-global-maximum-temperatures/
So some climate change is indeed happening, but it is as a result of (natural) cooling.
The polar-equatorial differential is now increasing and “the weather” is trying to equalize this.
This is one of th reasons we are all alive today: the whole weather systme protects us from extreme temperatures. Nevertheless, the deep fall in maxima still looks a bit frightening. But if you count back 90 years, you realize soon that we have been there before.