Fitting the data to the theory
Story submitted by Eric Worrall
A Dutch Action is the reverse of a standard auction – instead of the price starting low, with each bid driving the price up, a Dutch Auction inverts this process – the price starts high, and slowly drops until a bid is placed. The winner of the Dutch auction is the first person to make a bid.
Something very similar is happening right now in the world of mainstream climate science, as scientists struggle to fit a growing body of adverse data to their increasingly shaky theories of imminent catastrophic global warming, by slowly ratcheting down their estimates of climate sensitivity, while doing all in their power to avoid conceding that skeptics have been right all along.
The latest bid in the climate Dutch Auction comes from a paper published in Nature. According to authors Markus Huber & Reto Knutti, if you dial down transient climate response to 1.8c / doubling of CO2, and conceded around 0.15c to a combination of bad luck (lack of El Nino events) and the drop in solar activity, and squint really hard, you can just about fit the data to the models.
According to the abstract;
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2228.html
“Accounting for these adjusted trends we show that a climate model of reduced complexity with a transient climate response of about 1.8 °C is consistent with the temperature record of the past 15 years, as is the ensemble mean of the models in the Coupled Model Intercomparison Project Phase 5 (CMIP5).”
Of course, the abstract ends with the customary genuflection to climate alarmism.
“We conclude that there is little evidence for a systematic overestimation of the temperature response to increasing atmospheric CO2 concentrations in the CMIP5 ensemble.”
=========================================================
Added by Anthony: Here is a grouping of bids, er, transient climate sensitivity values with Huber and Knutti added as a vertical line in bright green:
Graphic from a discussion at Climate Dialogue
As you can see, the values have lowered since the IPCC AR4 report.
I’ve always said that it’s probably 1.0.
What do the climate models show when CO2 stays at the current level? Does anyone have a reference?
Justin Bieber is more interesting.
So, a Dutch Auction is essentially a market process to identify and establish a consensus. Whereas an economic market seeks to reconcile supply and demand, a consensus market seeks to reconcile desires and achievement. It is a perfect metaphor for the consensus of opinion construct which is a hallmark of politics and, unfortunately, science.
Pattern matching or “fitting data to theory” is a notable aspect of politicized science. Scientists have grown increasingly — or perhaps they never changed — predisposed to use induction in order to overcome strict scientific scrutiny. While it may provide guidance for scientific advancement, it has also artificially limited their rational perspective. The reasons are many, but typically include a discomfort to acknowledge what is known, unknown, and impossible to know; leverage over competing interests; and justification for authoritarian redistribution of resources.
Hmm… regarding climate sensitivity… can I still claim the NO CAGW prize? I can make a rational argument that the climate sensitivity to CO2 is well less than 2C.
Using rational logic, I intend to show that the CAGW supporters are stuck between a rock and a hard place. First the data: Warming 1970-2000 0.4C, or 0.13C per decade. Warming 2000-2014 0.0C (therefore 0.0C per decade). 2nd, what the CAGW side needs at an absolute minimum to claim we have a potential catastrophe in the making: 2C temperature rise per century, or 0.2C temperature rise per decade on average. The climate scientists have been claiming that we should expect a minimum of 2C warming this century under BAU scenarios, and have been claiming that a 4 or 6C temperature rise is possible.
Using the recent Atlantic Ocean ate the warming paper, the current hiatus in warming is due to the heat going into the Atlantic ocean as the Atlantic ocean is currently in the 30 year cooling phase of it’s ~60 year warming/cooling cycle. Fine let us give them that. Now lets show this mathematically so it is very easy to grasp.
1970-2000:
CO2warming + Ocean warming = 0.4C increase in temp (warming phase of ocean)
2000-2014 :
CO2 warming + Ocean cooling = 0.0C increase in temp (cooling phase of ocean)
Rearranging, we have CO2 warming = Ocean cooling, therefore CO2 warming during 1970-2000 = 0.2C. This is over a time frame of 30 years, which results in a value of 0.067 C per decade, or 0.67C per century. Time to call off the Progressive agenda.
Vs how the CAGW side likes to analyze the data because they absolutely CANNOT have warming less than 0.2C per decade for long term warming.
1970-2000:
CO2warming = 0.4C increase in temp (warming phase of ocean)
2000-2014 :
CO2 warming + Ocean cooling = 0.0C increase in temp (cooling phase of ocean)
2030-2060:
CO2warming + heat stored in ocean during cooling phase = 0.8C
Even then, this results in only 1.2C warming over 90 yrs. Thus based on data alone,
there is NO CAGW.
I also notice the width of those bars doesn’t seem to have shrunk much either.
Aren’t we gaining any understanding as we go on guessing?
Last I heard, even the IPCC was admitting that up till 2C, warming was going to be completely beneficial.
Does anyone believe that we are going to get up to, much less significantly above 800ppm?
The ordinate of the graphic is mislabelled. As the unit of measure is degrees Celsius to the minus 1 power, the associated quantity must be probability density rather than probability.
Eric,
I like the analogy – well put!
Mac
“M Courtney says:
August 22, 2014 at 11:35 am
I also notice the width of those bars doesn’t seem to have shrunk much either.
Aren’t we gaining any understanding as we go on guessing?
######################
two fundamental uncertainities.
Delta T
Delta W
that is change in temperature and change in forcing.
forcing has the widest uncertainties.
It wanes. At one point or another, no matter the field, we eventually go through these tsunamis of random fluff papers published/presented with the sole aim of justifying the continuance of subsidies. I call them “grant noise”.
”slowly ratcheting down their estimates of climate sensitivity, while doing all in their power to avoid conceding that skeptics have been right all along”
Once they have our image firmly implanted as flat earther types rejecting the very existence of the greenhouse effect and/or not “believing” in any anthropogenic global temperature influence among the general populace and academia then they can safely admit TCR is about 1 °C and ECS is about 0.5 °C (Yes, feedbacks are negative, IMO) without having to admit we were right in the academic, political, & MSM worlds, only here in the blogosphere will they have to concede to the truth of the matter.
I claim exactly zero for all well mixed GHGs. You heard it her first, and I can prove it!
I keep it at 0.0C/doubling of CO2, after negative feedbacks.
CO2 is innocent, until proven quilty.
Forcing smorcing. Can we please move on from the failed theory already?
Steven Mosher says at August 22, 2014 at 11:49 am
So are we just getting the temperature right because we are benchmarking closer – predicting shorter ahead?
And are we still know closer to having any understanding of what drives Temperature?
We ought to be reducing the uncertainty about the other factors (other forcing) as we learn more. But we don’t seem to be learning more. That’s how it looks to me.
n.n. says:
“So, a Dutch Auction is essentially a market process to identify and establish a consensus. ”
Not at all. A Dutch Auction trades off some of the profit of a conventional auction for time. In a Dutch Auction there is only ever one bid, so it goes fairly quickly. The price agreed to would, in theory, be the same as the price in a sealed bid auction, without the necessity of reviewing the sealed bids. In reality, some bidders might read the body language of their competitors and thus bid higher than they otherwise would, or wait and bid lower.
It’s still about getting the most money.
It’s OK everything is under control – the temporary ‘hiatus’ in temperature rise is to be expected now and could last another 10 years – it’s all the fault of those pesky oceans, the heat has gone really deep …. I know this must be true coz I read it on the BBC !
http://www.bbc.co.uk/news/science-environment-28870988
:->
FTA:
“…while doing all in their power to avoid conceding that skeptics have been right all along.”
Otherwise known as “bargaining”. Depression, and then acceptance, to follow.
Brute says:
August 22, 2014 at 12:06 pm
‘I call them “grant noise”.’
I am going to expropriate that.
It is simply case that no one has any idea.
There is a bit of disagreement between two well known scientists on the Climat etc blog.
I couldn’t resist temptation to point to the futility of their viewpoints:
A polite note to
Dr. Curry
and
Dr. Schmidt
Many articles are written by experts and those with less expertise on the subject of the AMO.
Relationship between the North Atlantic SST and the Reykjavik atmospheric pressure (the north component of the NAO, leading the AMO by number of years) SST vs Atmospheric pressure
is currently far from being understood, whereby the origins of the atmospheric pressure variability is the important factor here.
Without such understanding, the AGW/Natural variability attribution cannot be made with any degree of confidence.
<1C.
Lost in the noise of nature.
Which is bad – as for CAGW it signals 'game over'.
The very existence of the “CMIP5 ensemble” show clearly that modelers have no clue about error bounds of their model runs. So they run a model 1000 times, hoping that random errors will cancel out – a reasonable assumption. But how about a systematic errors?
For example, CAM5 model by NCAR assumes that a latent heat of vaporization of water is independent of temperature. This alone leads to an overestimation of energy transfer by evaporation from tropical seas by 3%. For a perspective, at the Earth surface temperature about 300 degrees Kelvin, a 3% error is 9 degrees K (16 degrees F).
Well how about ZERO (or thereabouts). Willis pointed out a long time ago that an average few minutes difference in the start of daily activity on the equator will counteract any ‘internal forcing’ change. He was right then and he is right now.
We don’t live on a theoretical spherical black body or have an ideal atmosphere of N2 and CO2. We have H2O – a lot of it.
Minor correction
I noted “A Dutch Action is the reverse of a standard auction” early in the article. It should be “A Dutch Auction”.
Ian M
I already have my own dice which I can role to generate some random numbers , does that mean I can easily can a Phd in climate ‘science’ , or do I need to throw darts at a dart board while wearing a blindfold too?