Adjusting the temperature down under

Jo Nova reports:

Australian Temperatures in cities adjusted up by 70%!?

Ken Stewart has been hard at work again, this time analyzing the Australian urban records. While he expected that the cities and towns would show a larger rise than records in the country due to the Urban Heat Island Effect, what he found was that the raw records showed only a 0.4 degree rise, less than the rural records which went from a raw 0.6 to an adjusted 0.85 (a rise of 40%). What shocked him about the urban records were the adjustments… making the trend a full 70% warmer.

The largest adjustments to the raw records are cooling ones in the middle of last century. So 50 years after the measurements were recorded, officials realized they were artificially too high? Hopefully someone who knows can explain why so many thermometers were overestimating temperatures in the first half of the 1900’s.

50 years later?

The raw Australian urban temperature records are in blue. The adjusted records in red. Note that temperatures in the middle of last century appear to be adjusted downwards. These are the annual average recordings for all 34 sites.

Remember Dr. David Jones, Head of Climate Monitoring and Prediction, National Climate Centre, Bureau of Meteorology said:

“On the issue of adjustments you find that these have a near zero impact on the all Australian temperature because these tend to be equally positive and negative across the network (as would be expected given they are adjustments for random station changes).”

Yet it’s obvious that there are far more warming adjustments than cooling ones, and remember, many (almost all?) of these urban sites will be markedly different places than what they were in say 1920. The encroachment of concrete, cars and exhaust vents can surely only go in one direction, though I guess, it’s possible all these sites have new sources of shade (why aren’t the themometers moved, if that’s the case?) Like the rural records, the temperatures overall are roughly a quarter of a degree higher after the “corrections”.

click to enlarge

Read the entire report here

Stay tuned to WUWT, as in the next couple of days I’ll publish yet another shock related to how climate scientists view temperature data. – Anthony

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September 14, 2010 12:56 pm

We’ve all heard that our grandparents had to walk to and from school in hip-deep snow, uphill both ways, without a word of complaint. Maybe these adjustments are just correcting for the “grandpa” effect? Every year, the 1930’s keep getting colder.

September 14, 2010 12:58 pm

While Jo Nova correctly points out that the similarities of the adjustments around the globe does not make it a conspiracy, the mere fact that so many have been made with little or no explanation does tend to paint a bullseye on the climatologists out to prove their “concensus”.

ShrNfr
September 14, 2010 1:11 pm

So you won’t say what we want, huh? We can torture you till you do. Gad, the amount of scientific and academic fraud here is astounding.

Enneagram
September 14, 2010 1:12 pm

Too many kagaroos around then?

latitude
September 14, 2010 1:23 pm

and what’s wrong with that?
…..everyone know you adjust temperatures up for UHI
…..and everyone knows it can’t possibly be warming as fast as the computer games say it is, unless it was a lot colder in the past

RockyRoad
September 14, 2010 1:26 pm

The biggest joke on the planet? “Climate scientists”. Bar none.
Absolutely incredible. When are these bozos going to fess up?

September 14, 2010 1:32 pm

When history’s changed to match “consensus”
And numbers move in mad directions,
Their “science” starts to fall away,
Exposing where these scoundrels play…

jcl
September 14, 2010 1:35 pm

Now let’s be fair, they also adjusted more recent temperatures UP, so it all balances out, right…..right??
/sarc off

John Whitman
September 14, 2010 1:38 pm

Fraud is what the National Climate Centre, Bureau of Meteorology has committed by their adjustments of the temps and temp trends.

Dr T G Watkins
September 14, 2010 1:40 pm

No doubt the broadsheets in UK, Australia and USA will lead with Ken Stewart’s and Andy Montford’s investigations. Some hope.
There may not be a conspiracy but there is certainly an awful lot of explaining to do by a large number of people. A full blown court case in the U.S. is the only way I can see the whole can of worms will be opened.

Scott Covert
September 14, 2010 1:47 pm

The first graph is pivoted not adjusted, Even if it was cooler in 1950 how could that show as anything other than a step-change?
How can this be anything but fraud?

September 14, 2010 1:49 pm

“Stay tuned to WUWT, as in the next couple of days I’ll publish yet another shock related to how climate scientists view temperature data. – Anthony ”
This group is probably beyond being shocked by strange attitudes toward temperature data; and, the worship of “undata”.

Mike Ford
September 14, 2010 1:57 pm

If you take the oldest half of the temperature dataset and adjust it down, and the newest half of the dataset and adjust them up, you COULD accurately state “equally positive and equally negative” but the result is, of course, a joke.
If you want to fool people even more, you could just adjust everything in the past negative. The older the temperature is, the more adjustment it gets, and just watch that increasing slope!!

Enneagram
September 14, 2010 1:59 pm

We must remember that the Climate Gate emails were currently sent to all “trickers” around the world, as to lie accordingly.

September 14, 2010 2:19 pm

Wait! I know this one! You see there’s an algorithm…………

Pete
September 14, 2010 2:30 pm

there should be a “Gotcha” award for findings like this, or at least a tag, they soon mount up!

Curiousgeorge
September 14, 2010 2:38 pm

Jerry Reed had something to say about all this temperature stuff: “When You’re Hot, You’re Hot” . http://www.youtube.com/watch?v=R3BKoMQU6Uw

Ian George
September 14, 2010 2:40 pm

I have been aware of this for sometime after discovering the ‘dumbing down’ of data for many so-called ‘high-quality climate sites’ featured on the BOM website.
For instance, Lismore Centre St station was dropped 0.7C in 1914 – and this has been done to many others. Thus 1914 would have been a much warmer year if this had not been done.
This station’s data also shows up at GISS NASA with the same ‘adjustment’. However, earlier this year I noticed the ‘adjustment’ disappeared and now reads the same as the raw data. The whole thing needs a thorough review.
See raw data at:-
http://www.bom.gov.au/jsp/ncc/cdio/weatherData/av?p_nccObsCode=36&p_display_type=dataFile&p_startYear=&p_stn_num=058037
and high quality data graph at:-
http://reg.bom.gov.au/cgi-bin/climate/hqsites/site_data.cgi?variable=maxT&area=nsw&station=058037&period=annual

Latimer Alder
September 14, 2010 2:40 pm

since it is a well known fact her ei n UK that all Australian’s walk around on their heads – because otherwise they would fall off the edge of the world, it is clear that the thermometers too were upside down. Hence warming was erroneously recorded as cooling.
Thankfully today’s AGW theories have showed us that this observational error must have occurred..otherwise the world would have been behaving contrary to theory – which is clearly impossible. With the latest adjustments to the data, the official record now agrees with theory once more and all is well. Simples.

INGSOC
September 14, 2010 2:55 pm

“Stay tuned to WUWT, as in the next couple of days I’ll publish yet another shock related to how climate scientists view temperature data.–Anthony”
Will Anthony survive the attack of the killer thermometer? Will the evil professor Jones and his mind ray conquer the world? Tune in next week for the spine tingling conclusion! Same bat time, same bat channel!

September 14, 2010 3:12 pm

The old canard of Time-of-Day adjustment will be played once again. But never is it justified with actual day-before/day-after + temp’s + change-in-measurement-time + reason for change/date of change. That is, with NASA-GISS corruptions (er, corrections) for TOBS/urban Heat Island light effect, Hansen recalculates every temperature every time every month, but with a different change-baseline/change-reason/night-light factor. This is because he does not “freeze” data for UHI/nightlights/TOBS but recalculates every temperature from his database based on the latest night lights.
So, with different correction factors every month, you cannot track nor justify the many million automatic changes to his surface temperatures. Also, TOBS cannot be sorted out/subtracted for each record independently and checked back against the real record for every year/month/day.

Slabadang
September 14, 2010 3:20 pm

Nice exposure!
Climate maffia account keeping….. who calls the police?

Jim Barker
September 14, 2010 3:30 pm

James Sexton says:
September 14, 2010 at 2:19 pm
Wait! I know this one! You see there’s an algorithm…………
An Al Gor rhythm… Does it have a good beat? 😉

September 14, 2010 3:38 pm

The breathtaking “gall” of these so called scientists is funded by “muggins” Joe Public who in turn elect mug, warmist politicians.
Still shaking my head.

September 14, 2010 3:54 pm

Jim Barker says:
September 14, 2010 at 3:30 pm
James Sexton says:
September 14, 2010 at 2:19 pm
Wait! I know this one! You see there’s an algorithm…………
“An Al Gor rhythm… Does it have a good beat? ;-)”
=======================================================
Yes, my play was a bit different than your play on words, but I like yours.
This is an all-to-familiar adjustment of data. Old data down, more recent data up. History is, apparently, subjective. Down the memory hole goes the old information, in with the new. We’ve seen it time and time, again. Did Orwell nail it or what?