Results from the surface temperature outlier races, just in time for AR5

 

Guest post by Bob Tisdale

The Met Office released its global HadCRUT4 land plus sea surface DATA recently. The HadCRUT4 dataset was first presented in the Morice et al (2012) paper Quantifying uncertainties in global and regional temperature change using an ensemble of observational estimates: The HadCRUT4 dataset.

In the race to have the highest trend since 1976, does GISS LOTI still hold its lead, or has the new HadCRUT4 data overtaken GISS?

And the current winner is…

HadCRUT4 has the highest short-term (1976-2010) linear trend, at a whopping 0.177 deg C/decade.

Figure 1

On a long-term basis, the new HadCRUT4 data comes in a lowly third, just behind the dataset it obsoletes, HadCRUT3.

Figure 2

NCDC: If you’d like to get back in the short-term trend game, you can stop infilling Southern Ocean sea surface temperature, which has been cooling for decades and leave most of the grids at those latitudes blank like HADSST3. That would help to raise your trend. Or you can extend land surface temperature data out over the oceans in areas where there is sea ice, like GISS, to take advantage of the higher rate of warming of land surface temperature.  That would help too.

MY FIRST BOOK

The IPCC claims that only the rise in anthropogenic greenhouse gases can explain the warming over the past 30 years. Satellite-based sea surface temperature disagrees with the IPCC’s claims. Most, if not all, of the rise in global sea surface temperature is shown to be the result of a natural process called the El Niño-Southern Oscillation, or ENSO. This is discussed in detail in my first book, If the IPCC was Selling Manmade Global Warming as a Product, Would the FTC Stop their deceptive Ads?, which is available in pdf and Kindle editions. A copy of the introduction, table of contents, and closing can be found here.

SOURCES

The land plus sea surface temperature datasets are available through the following links:

GISS LOTI

HadCRUT3

HadCRUT4

NCDC

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70 Comments
cui bono
April 18, 2012 1:59 am

A couple of TV points:
richard verney says (April 17, 2012 at 6:09 pm)
I watched te same BBC documentary on climate change and the Old Kingdom, and heartily recommend it. What was most interesting was the scientists talking about a natural 1500-year cycle for Little Ice Ages, and the brilliant way they found evidence by looking at how far south in the Atlantic melting icebergs had dropped Icelandic volcanic ash to the seabed. This was joined-up climate reconstruction at it’s best.
Mike says (April 17, 2012 at 10:07 pm)
“Amazing. I wonder how many of the tradespeople commenting here would appreciate someone unqualified in the trade coming behind them and telling them they are doing it wrong?”
In the UK we have programs (such as ‘Rogue Traders’) where honest experts expose the shenanigans of their less competent or ethical fellows with the aid of hidden cameras. Enough said.

Editor
April 18, 2012 3:29 am

In response to my statement, “The IPCC claims that only the rise in anthropogenic greenhouse gases can explain the warming over the past 30 years, ” Steven Mosher says: “Wrong. The IPCC attributes more than half of the warming to GHG.”
What I wrote was correct, Steven. The IPCC AR4 Working Group 1 Summary for Policymakers, page 10, top paragraph in the right-hand column reads:
“Warming of the climate system has been detected in changes of surface and atmospheric temperatures in the upper several hundred metres of the ocean, and in contributions to sea level rise. Attribution studies have established anthropogenic contributions to all of these changes. The observed pattern of tropospheric warming and stratospheric cooling is very likely due to the combined infl uences of greenhouse gas increases and stratospheric ozone depletion.”
And in Chapter 9, Section 9.4.1.2 Simulations of the 20th Century, the first paragraph includes:
“Figure 9.5 shows that simulations that incorporate anthropogenic forcings, including increasing greenhouse gas concentrations and the effects of aerosols, and that also incorporate natural external forcings provide a consistent explanation of the observed temperature record, whereas simulations that include only natural forcings do not simulate the warming observed over the last three decades.”
Here’s a link to Figure 9.5.
http://www.ipcc.ch/publications_and_data/ar4/wg1/en/figure-9-5.html
Steven Mosher says: “ENSO does not explain warming. It can’t. Its like saying a pattern of warming causes warming”
It can’t? For the past 3 years, I’ve been illustrating, animating and explaining how ENSO, as a process, does explain the warming of global sea surface temperatures during the past 30 years. And I’ve never before seen ENSO described as a pattern of warming. NINO3.4 SST anomalies have not warmed in the past 111 years:
http://i43.tinypic.com/mr3ifb.jpg
And they haven’t warmed since 1975, the start of the recent warming period.
http://i44.tinypic.com/jaj5ae.jpg
How is ENSO a pattern of warming, Steven?

Editor
April 18, 2012 4:04 am

Cui Bono
On the subject of data manipulation, anyone know whether the Icelandic Met Office got a proper reply from GHCN re the outrageous reworking of the Reykjavik temperature data? It’s been 10 weeks now. Did I miss it?
Not that I know of. I keep in regular touch with Trausti Jonnson at the IMO and I am still waiting for a reply from GHCN as well.
Seems like Lawrimore is waiting for us to forget it and go away.

beesaman
April 18, 2012 4:27 am

Mike if you do not know what an instrument engineer is, let alone does, the your comments are meaningless.
But let us go back to the crux of the problem, do we have reliable global temperature measurements for present temperatures that we can use as a baseline? My argument is that we do not. There are not enough measurement points and those that we do have are not accurate enough to be claiming that we can measure to the accuracy stated. All we do have is groups of measurements that may give us local trends. This is a start but it can not give us the global picture.
As for proxy measurements, no baseline means using those proxies to argue for the accuracies stated is pure nonsense, especially more so when stitching different proxies together to create a longer timeline. This is also true for hindcasts. Again proxies are useful and locally can deliver local trends. Ultimately, models are very useful, but only if your data is valid and I am afraid to say that in climate science this means the Emperor has no clothes. No wonder so many engineers are losing respect for climate scientists.

DR
April 18, 2012 6:30 am

Santer and Schmidt (and IPCC) were only kidding when they stated:

Tropospheric warming is a robust feature of climate model simulations driven by historical increases in greenhouse gases (1–3). Maximum warming is predicted to occur in the middle and upper tropical troposphere.

http://climateaudit.org/2008/12/28/gavin-and-the-big-red-dog/
Where’s the hot spot?
The “basic physics” also states the stratosphere should be cooling.
How about it Mosher, what’s wrong with the “theory”?

April 18, 2012 8:47 am

Folks,
I’m keen to get HADCRUT4 up on WFT rather more timely than I did CRUTEM4 (ahem)… But CRU doesn’t have it on its data page yet (http://www.cru.uea.ac.uk/cru/data/temperature/) in their standard format so I need to write a new filter format.
I *think* what I want to compare to HADCRUT3/GISTEMP etc. is the second column of the monthly series (global, NH, SH and tropics), described as “the median of the 100 ensemble member time series”. Can anyone confirm this?
If I were to offer uncertainty values too, which of the many uncertainties described at http://www.metoffice.gov.uk/hadobs/hadcrut4/data/series_format.html would be the one to go for?
Thanks
Paul

richard verney
April 18, 2012 9:18 am

beesaman says:
April 18, 2012 at 4:27 am
//////////////////////////////////////////////
In addition, do noy forget that data based upon land temperature measurments does not tell us anything of importance since (i) without taking into account, it is not a metric for energy, and (ii) ot does not tell us what the average temperature was over a sustained period of 24 hours was.
Just because there might have been a change to Tmax and/or Tmin, it does not necessarily mean that the averafe temperature throughout the day has changed.
The data sets are not fit for purpose. This is not surprising since the temperature stations and the measurements that they record were never intended for climate research
If back in the 1970s there concerns as to global warming, step 1 should have been to completely redesign and redeploy a new spatially designed monitoring system which was properly sited and with proper instrumentation which was calibrated to a known standard and which measured temperature and humidity every 5 minutes and which reported its output additionally in Joules.
Of course, the satelitte system comes nearest to this, nut the warmists generally do not like the satellite data..
Finally, if one is concerned as to the possibilty of global warming, one would only bother with the oceans. THis is where the energy is. There can be no global warming if the oceans are not warming.

richard verney
April 18, 2012 9:20 am

Whoops!!.
Meant to say:
“…since (i) without taking into account humidity, it is not a metric for energy…,”

dmmcmah
April 18, 2012 9:26 am

Glad you wrote a book – but why the extra long title? Hate to say it but an extremely long title like that is really going to cut into your book downloads. In a nutshell, your book will be largely ignored except by the readers of this blog. The title you used should have been a subtitle, with a short phrase that catches people’s attention quickly used as the title. I know it sounds shallow but that’s the reality of the publishing business.

April 18, 2012 9:41 am

OK, on further delving it looks pretty clear the second column is the right one, so (tada) announcing HADCRUT4 on WFT:
http://www.woodfortrees.org/plot/hadcrut4gl/mean:60/plot/hadcrut3vgl/mean:60/plot/hadcrut4gl/trend/plot/hadcrut3vgl/trend/plot/hadcrut4gl/last:360/trend/plot/hadcrut3vgl/last:360/trend
This confirms Bob’s trend at 0.17deg/decade over the last 30 years:
http://www.woodfortrees.org/data/hadcrut4gl/last:360/trend
Enjoy!
Paul

rgbatduke
April 18, 2012 9:44 am

Care to name them? Or just 100 of the tens of thousands? How about ten?
An amusing anecdote associated with this observation. Alligators are a very interesting indicator of local average temperature, because nests cooler than 30C produce all females, nests warmer than 34C produce all males, in a window that is 1 to 3 weeks long during incubation. Given their breeding season, this places strict limits on how far north alligators can range as a self-sustaining population. North Carolina happens to be that limit — native sustaining populations of alligators can be found (in otherwise suitable habitat) roughly from Kitty Hawk in northeast NC to the southeast of an invisible line that cuts diagonally southwest across the state, roughly paralleling the coast (there are rarely alligators seen all the way up to the Virginia border and maybe beyond in the Dismal Swamp). It is close to, but not quite identical to, the line demarking the range of plants like oleander and beugonvillia that are sensitive to frost (and hence die if not protected during a winter in which temperatures regularly drop below freezing). A shaded map of their approximate range can be seen here:
http://www.herpsofnc.org/herps_of_NC/crocodilians/Allmis/All_mis.html
I live in Durham about 60-70 miles the west of that line (which is around Goldsboro to the Southeast of here, with a major waterway that extends all the way to the coast (the Neuse River) that runs right beside it and a second one not far away. Raleigh is more like 40-50 miles from it.
Alligators actually behave like teenagers at some point in their lives — they are inclined to wander far from where they are born to seek out new territory. The westernmost part of their range is thus already beyond the range where they can successfully reproduce as a locally sustained population as nests will produce all females, but there are enough males and females that “diffuse” west before settling on a habitat that you can still find a few gators in the lakes, backwaters and swamplands in the Neuse watershed. I fish in several of waterways around Raleigh and Durham that are directly in line to the coast in this way.
In 2010 it was big news when a gator was seen swimming in Hope Mills Lake, in Fayetteville NC (again, 80 or so miles to the southeast) but as the article noted, this is in their natural range where they are rare (probably immigrants that can’t sustain a natural population) but not unknown. The reason it was big news was that the lake is in a heavily inhabited area and is used for recreation with lots of swimmers and fishermen, not because it was “unlikely”. If humans didn’t surround the lake it might harbor a permanent (but small) population over time.
Surveys of their population show that alligators are most common and go farthest inland in the Cape Fear and Neuse waterways, probably because they tend to be surrounded by protected game lands and swampy areas that are natural habitat.
Back in the 1980s — I can’t do better than that because not even Google can retrieve a contemporary account — it was big news when not one but two alligators showed up in ponds at a golf course in Raleigh. This was before “CAGW” had become a world religion, but there were a couple of summers in the 1980s that were scorchers and a couple of very mild winters as well, and the mild conditions plus the aforementioned wanderlust apparently encouraged these two good sized gators (not babies, these were the real thing) to wander further west than usual looking for new territory. Eventually they were removed.
Here we are some 30 years later — the 30 years that have supposedly raised global average temperatures by some 0.5 C over almost exactly that interval. That sort of increase would correspond to a westward push of the natural habitat of at least 40 or 50 miles — all that one needs is for one winter in four or five to be in the range that produces both sexes, there is plenty of swampland and waterway (most of it protected) all the way to the coast up the Neuse and Cape Fear watersheds). I keep hoping to see alligators in the lakes I fish in, in the waterways I hike along — and I keep an eye out for them because they are a species that could just turn up by chance far out of place, like the pair at the Raleigh golf course. So do a lot of people. Basically, if anybody spotted a gator in Jordan Lake or Falls Lake or on the Eno river or in the New Hope Creek that runs within a few miles of my house or… it would be huge news, not because it was “proof” of CAGW but because everybody would think it was so cool. Usually one has to go at least near to the coast to have any chance at all of seeing a wild gator in NC, and one really has to get ON the coast or into the swamps on the major waterways OF the coast to have a “good” chance, or to see one casually hanging out on golf courses. Bald Head Island, for example, has a nice population in its golf ponds and sometimes spotted hanging our right on the roads or grassways. There aren’t a lot of them (that I know of) near Beaufort where I teach in the summer but I tend to hang out and fish in the saltwater side of things and they seem to prefer fresh, or at most brackish.
Anecdotal evidence, to be sure, but still, pretty negatory. We still have frosty, cold, occasionally very snowy winters in my part of NC. Less than a decade ago NC experienced a 100 year record for snowfall with a single fall over 20 inches in Durham. Last winter we started out very cold early, then had a fairly “normal” winter with a few very light snowfalls, then had an arguably unusually warm March (after a normal February). April, if anything, has been normal to cool — we danced along the edge of a late frost last week 2 or 3 nights running, but really it has been unremarkable. There is nothing in this to attract even an unruly alligator teenager — they might be able to build a nest and hibernate through the cold (although it gets quite cold, with temperatures down in the teens F or lower at least a few times most winters) but in most springs — even this “warm” one — the probability of a cool enough stretch to drop average nest temperatures to < 30C (86 F) for a week or more is near certainty. No possibility of a breeding population here, little possibility in Raleigh or even Smithfield or Goldsboro. And we are, sadly, too far upstream for even the most enterprising of alligator pioneers to travel seeking a new home, not even with an exploding beaver population and plentiful fish and reptile and bird population to feed them on the creeks and waterways.
There are similar bellwethers in many other streams and habitats. Clams that live only in selected waterways, for example. These populations are often at risk, but the risk is from agricultural runoff, other pollution, or land use changes, not so much from significant changes in climate. There are definitely decadal trends in the date of the last frost and so on, but anyone who believes that they are "safely" earlier than they were 30 years ago is an idiot who deserves to lose the tomatoes (totally frost intolerant) they put out too early. As I have remarked on other threads, a mere 15 or 16 years ago (right in the middle of the supposed "warming trend" last frost at MY house in NC was at the end of the first week in May! This was so late that it killed off my azaleas, let along wiped out my tomatoes, my fruit crop, and damaged the newly leafed trees. April 15th is the usual “last frost” day for the area, but there are years where it occurs in the last weeks of March (and I’ve gotten away with putting tomatoes in 4/1) and years where it occurs in the last weeks of April or even into May as noted.
Anyone who isn’t an idiot in statistics can guestimate the variance of the date of last frost even from this (still anecdotal) data. The actual date of last frost is distributed around the mean date with a standard deviation of perhaps ten days or even two weeks, making two week excursions either way unremarkable. This also means that resolving the motion of the mean by days or even a week over 30 years of data is basically impossible. Trends are lost in an indistinguishable from noise on all time scales, especially when the secular trends themselves are probably signal from long period secular variation due to e.g. the phase of the PDO and state of the Sun.
rgb

Editor
April 18, 2012 10:04 am

dmmcmah: Thanks for the insight about book titles. Too late now, unfortunately. I’ll definitely keep that in mind when I’m working on a title for my second book, one about ENSO. How about…
ENSO* – The Overlooked Driver of Global Climate
*El Niño-Southern Oscillation

dmmcmah
Reply to  Bob Tisdale
April 18, 2012 10:09 am

“ENSO – The Overlooked Driver of Global Climate” is a great title.

Werner Brozek
April 18, 2012 10:31 am

woodfortrees (Paul Clark) says:
April 18, 2012 at 9:41 am
OK, on further delving it looks pretty clear the second column is the right one, so (tada) announcing HADCRUT4 on WFT

Thank you very much!
After analysing the data, I have come to the conclusion that according to HADCRUT4, there has been no global warming for 11 years and 4 months, going back to December 2000. HADCRUT4 only goes to December 2010 so I had to be a bit creative. What I did was plot HADCRUT3 from December 2000 to December 2010. Then I plotted HADCRUT3 from December 2000 to the present. The DIFFERENCE in slope was 0.00607 – 0.00165 = 0.00442 lower for the latter. The postive slope for HADCRUT4 was 0.00408. So IF HADCRUT4 were totally up to date, I conclude it would show no slope for at least 11 years and 4 months. (It could be a month longer if the February anomaly for HADCRUT3 of 0.19 is ever officially published. On the basis of what GISS says about March, March would not change things either.) See:
http://www.woodfortrees.org/plot/hadcrut4gl/from:2000/to/plot/hadcrut4gl/from:2000.9/trend/plot/hadcrut3gl/from:2000/plot/hadcrut3gl/from:2000.9/to:2011/trend/plot/hadcrut3gl/from:2000.9/trend

Jean Parisot
April 18, 2012 11:30 am

When did the “earth’s temperature” with respect to climate get defined?
If your measuring a system for long term function like climate, why measure the dynamic boundary layers? The earth’s temperature for the purposes of climate is a function of the enourmous heat sinking oceans. The air temperature is driven dynamically and non-homogenously by wind, clouds, and sun – it is weather.
It’s like we are trying to measure the temperature of a pot of water on the stove using an IR radiometer across the bubbling surface, versus the trendline of a couple of dispersed thermocouples in the pot.

Werner Brozek
April 18, 2012 2:56 pm

Is it possible for any one to check over some specific numbers that seem way off? What really sticks out like a sore thumb is the difference between January 2007 on HADCRUT3 versus January 2007 on HADCRUT4. While many months are close, this month jumps from 0.61 to 0.82 for a difference of 0.21 for that single month. See
http://www.woodfortrees.org/plot/hadcrut4gl/from:1997.5/to:2007.5/plot/hadcrut3gl/from:1997.5/to:2007.5

Phil
April 18, 2012 2:59 pm

Why does HADCRUT4 cut off in 2010? Was the whole point of HADCRUT4 simply to bump the trend? Lolz.

Editor
April 18, 2012 4:42 pm

Phil says: “Why does HADCRUT4 cut off in 2010?”
The likely hold up is the HADSST3 portion. The Hadley Centre is working out some problems with getting the data updated in a timely manner.

April 18, 2012 8:47 pm

Thanks Paul; excellent work!
http://www.woodfortrees.org/plot/hadcrut4gl/mean:60/plot/hadcrut3vgl/mean:60/plot/hadcrut4gl/trend/plot/hadcrut3vgl/trend/plot/hadcrut4gl/last:360/trend/plot/hadcrut3vgl/last:360/trend says it all.
According to HADCRUT4 the warming did not stop in 1998 but in 2002.
I have updated my pages with the new HADCRUT4 graphs, but kept the old ones too.

April 19, 2012 2:25 am

Werner: “Is it possible for any one to check over some specific numbers that seem way off? What really sticks out like a sore thumb is the difference between January 2007 on HADCRUT3 versus January 2007 on HADCRUT4.”
I’ve checked the 2007.0 values manually against the original sources and WFT is passing them through correctly.
Cheers
Paul