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It’s just not cricket. And in so many ways.
Shame to let a perfectly good dataset go to waste… Australian data comes from some of the longest stations running in the Southern Hemisphere; it could be useful. Instead we get more evidence here that the BOM’s magical and secret homogenization adjustments can take poor data and spread false signals into better data. Homogenisation errors are already visible in a site-by-site analysis, but this shows the problems may be so big they affect averages across the whole of Australia, and we can detect them with satellites.
Tom Quirk continues comparing the satellite record of Australia with the BOM surface version. Previously, he (and for the record, Ken Stewart in 2015) showed that some discrepancies are due to the effect of heavy rain or drought. But now he looks further and finds that not-so-coincidentally, the largest gaps and most “inexplicable” differences occur in the mid nineteen-nineties, the same years the BoM shifted from using old large Stevenson screens to electronic thermometers. Around the same time, the large screens were often also swapped for much smaller ones too — like double jeopardy for data. Oddly, spookily, the BOM makes many adjustments to data […]
By Jo Nova
Two days in a row, this blog has been quoted in the Daily Telegraph.
Congratulations to Clarissa Bye for shining a torch on the BoM
Craig Kelly found the wandering solar panel leaning on a bush near Sydney’s official thermometer, and I wrote about what a strange spot that was to leave a solar panel. Then Clarissa Bye of the Daily Telegraph picked up the story and on Jan 25th asked the BoM why the panel was there. After a whole week of missed deadlines, with pleas for extra time, The Daily Telegraph gave up waiting and published the story Wednesday:
Questions raised over mystery solar panel at Sydney Observatory
Science blogger Jo Nova has also queried the solar panel’s location, describing the BOM as “lackadaisical” at best in maintaining weather sites. “The solar panel is exactly due south of the Stevenson screen where the thermometer is kept,” she said. “If, hypothetically, someone wanted to leave a reflective object pointed at the box at midday, that’d be the place to do it.”
““There’s only been one day above 30 degrees since February 21st last year in Sydney, and that was a day […]
Surprisingly, the World War I era temperatures are still changing. Mornings that seemed nippy at the time are now susceptible to frosts.
Someone should warn the farmers — except they’re all dead.
Thanks to Chris Gillham for independently and laboriously going through the new unannounced changes in another cycle of BOM’s hidden revamp of Australia’s history. ACORN 2.2 is the latest version of the Australian Climate Observation Reference Network of “the best” 112 weather stations across Australia.
Bureau of Meteorology ‘cools the past, warms present’
Graham Lloyd, The Australian
“The bureau has now remodelled the national temperature dataset three times in just nine years,” Dr Jennifer Marohasy said.
In the last five years the ACORN re-revisions by the BOM have discovered another quarter of a degree of warming that we didn’t know about from the last hundred years. It’s not clear why the BOM doesn’t want to tell the world how good they are at correcting thermometer records from 1913. It seems like a remarkable skill.
The minima just keep getting cooler
Chris Gillham plots the longest running stations from the ACORN 2.2 set against the old raw readings:
Who knew all those old […]
Why does “seven years” suddenly matter?
“The past 7 years have been the hottest on record
“by a clear margin,” scientists say”
Since when do we do climate analysis on seven year periods? — Since climate scientists get rewarded for scaring taxpayers and “seven” is this years lucky number.
2021 wasn’t THE hottest year so they have to come up with something
In climate “science” there are always a thousand combinations and permutations of climate records to pick from, so it’s a snap to find one that sings. If it wasn’t the hottest year in 2021, it might have been the hottest global summer, warmest winter, driest spring, or stormiest “on record”. And if temperatures stop rising, the hottest year record stretches elastically into the hottest 2-years, 3-years and 5 years-on-record.
Scientifically, the climate interval that matters most is whatever it has to be to stretch out and sing “Bingo” — “The Met Bureau needs more money.”
Naturally all Climate Bingo games are boosted by inexplicable adjustments, badly placed thermometers, shrinking thermometer screens, and the process of constantly rewriting history. If the incinerators near thermometers don’t do it, the homogenization will. They might be Australian […]
The Australian Bureau of Meteorology uses “surrounding” thermometers to adjust for odd shifts in data (caused by things like long grass, cracked screens, or new equipment, some of which is not listed in the site information). The Bureau fishes among many possible sites to find those that happen to match up or , err “correlate” during a particular five year period. Sometimes these are not the nearest site, but ones… further away. So the BOM will ignore the nearby stations, and use further ones to adjust the record.
These correlations, like quantum entanglements, are mysterious and fleeting. A station can be used once in the last hundred years to “correct” another, but for all the other years it doesn’t correlate well — which begs the question of why it had these special telediagnostic powers for a short while, but somehow lost them? Or why a thermometer 300km away might show more accurate trends than one 50km away.
One of the most extreme examples was when Cobar in NSW was used to adjust the records at Alice Springs –almost 1500km away (h/t Bill Johnston). That adjustment was 0.6°C down in 1932 (due to a site move, we’re told). This potentially matters […]
For forty years NASA satellites have been circling the Earth covering our landmass day and night. But yet again, the Australian Bureau of Meteorology has released the obligatory “hottest ever year” media release without mentioning that it wasn’t the hottest year in the far more accurate satellite record of Australia, and that this new “record” depends entirely on adjustments and quite possibly on ignoring all the data recorded in the 1800s. Once again they miss the chance to remind Australians that it was almost certainly hotter for hundreds of years seven thousand years ago. Sea levels were higher then too.
They claim it’s the driest ever year, and maybe it was, but they don’t say that there is no trend in droughts and rainfall for the last 178 years.
So to help them out I’ve graphed UAH satellite temperature record which shows that last year was the 4th hottest year since 1979 when the UAH satellite data set begins.
Perhaps in 2020 the Australian Bureau of Meteorology will set their own record, and explain for the first time how and why they adjust their data continuously and post hoc. The Australian surface data is all changed with a mystical secret […]
Winning! The 1896 heatwave story is going viral and the ABC is reduced to weak, late excuses
Australians are realizing that our hot history has been hidden from us. We’ve set a new site traffic record with around 100,000 people checking in since Wednesday, plus thousands more reading the story elsewhere like Catallaxy and Facebook. Thank you for sharing! We first posted the 1896 heatwave here first in 2013, then again on Wednesday. The ABC has gone into damage control responding with a direct attempt to rebut the story, but they are too scared to name this site. What are they afraid of?
We, of course, have no such fear. Six years after skeptics let Australia know about the 1896 heatwave, the ABC and “experts” finally catch up but only under duress. So now they mention it, but use vague caveats, distractors, discuss different time spans, ignore 49 other hot sites, appeal to authority, and don’t mention their own recent artificial site changes that skeptics have documented in more detail than the BOM have. The “experts” allude to “thermometers on beer crates” but in Bourke the heat was recorded at the post office on Oxley st. Skeptics are well aware […]
The Bureau of Meteorology did what to February?
Wow, just wow. Look what the Bureau of Meteorology has covertly done to February? Something like one third of a degree has been added to the average Australian summer maximum anomalies over the past few years according to the “expert” data from the worlds-best-practise equipment.
In the BOM Whopper Part 1 we revealed that in the BOM’s latest round of unannounced adjustments there were big increases in the rate of Australian summer warming. It turns out a lot of the summer rise comes from changes to February. Mysteriously, there were large changes to the national average of the last three years. Let that sink in.
These changes were incomprehensible because while the averaged “whole nation” got warmer, there were no changes to the data in any of the 104 individual stations.
It’s all rather spooky… but what it isn’t, is scientific.
The two main points in Bob Fernley Jones’ work:
There are big increases to measurements recorded in the last three years? Why? Yet again, the adjustments are down in the early years, up in the latter years, and overall, the rate of warming, surprise, increases thanks to man-made adjustments. He […]
If the planet was at stake you’d think the BOM would be doing this research, not unpaid volunteers.
Bill Johnston has shown again, that the BOM is apparently unaware and, perhaps most damningly, not even interested in most of the things that happened to their official thermometer sites.
Port Hedland is supposedly “one of the best” researched sites in Australia — so it is a certified ACORN site (one of the 112). The trends matter, and being remote, it influences a large area. But one man with dedication and no funding at all can find key historical maps and photos that the BOM, with its million dollar-a-day budget, cannot. Instead of doing this hard work the BOM uses the magical homogenization process “to fix” up all the anomalies by hunting for data in sites hundreds of kilometers away that can be used to adjust the records at Port Hedland. This is the secret process that even the BOM admits it cannot describe in full to anyone outside the BOM. As Johnston says, it’s a process so bad it “should be abandoned”. There is no saving the error correction that starts with bad data, missing documents, and barely any historical research […]
Trying to fix past mistakes through homogenization
Lots of things can muck up a perfect thermometer spot, like shade, new roads, new screens, or old paint. In order to remove these annoying non-climatic effects, the BOM compares each station to those around it to look for odd changes. In theory this sounds like a good idea. In practice it’s more like hepatitis – bad news that spreads. It’s a rogue code, sweeping through records, trying to find undocumented changes, and enabling any amount of revisionism.
The BOM “detects” these mysterious shifts at each site through thermometers that may be hundreds of kilometers away, even across a mountain range or the Bass Strait.
Among other sites, Cape Bruny in far south Tasmania has been corrected with the help of Ballarat 812 km away on the mainland, over mountains and across the Bass Strait. In 1991 Cape Bruny was found to be “statistically” wrong, and adjusted down by over half a degree.
…
All these sites marked in red were used to correct the record at least once at Cape Bruny, a distant island in the far south of Tasmania.
It’s a tough life for old screens: Their wooden houses get […]
All that global warming and nothing to show for it?
Headlines rang out telling Australians that last summer was the hottest ever. But, according to the UAH satellite series, the hottest — just barely — was in 1991, when CO2 was a wonderful, safe 356 ppm. Since then, humans have emitted more than half — fully 58% — of all the emissions we have ever emitted since we crawled out of those dank caves. CO2 levels are almost 50 ppm higher now, and temperatures are almost as high.*
Wonder if this summer will get close to the summer of 1991 (and we wonder if Victoria will keep the lights on).
…
The UAH data comes from NASA satellites, which cover all the Australian land mass every day and night.
The BOM (and NASA) prefers to use Australian ground data which is based on sparse thermometers that keep changing sites and equipment, are located near airport tarmacs, buildings, and cars. When readings are too cold, the BOM sometimes deletes them. Temperatures from thermometers hundreds of kilometers apart are magically homogenized and “corrected” through a secret computer process and two thirds of our warming comes from those adjustments, not from CO2 […]
The cheapest way to prevent man-made global warming is stop the BOM altering the data
First the BoM had “high quality” data. Then, with fanfare, after we asked for an audit they had the miracle of ACORN circa 2011. Then early this year ACORN 2.0 was quietly birthed with major adjustments as expert data became “more expert” but the BOM strangely didn’t want to mention that what was so good is now even better (apparently). The unofficial BOM audit team — especially Bob Fernley-Jones and Chris Gillham — have unearthed just how large the latest rewrite of history is. These men are truly independent, they have no funding, and nothing to gain either way. Please thank them for their unpaid dedication.
In this brazen latest round, even the summer of 2018 just got warmer. After all the headlines, after it was measured on supposedly modern first class equipment, even data just 18 months old is being re-fiddled. The temperatures read out on the news in January 2018? Nevermind what they said then. Those hottest ever records then were even hotter than the BoM thought, thanks to amazing new discoveries that the BOM doesn’t think are important enough to issue as […]
More warming adjustments from ACORN2
Once again we find that the oldest thermometers were apparently reading artificially high even though many were newish in 1910 and placed in approved Stevenson screens.) This is also despite the additional urban warming effect of a population that grew 400% since then. What are the odds?!
Fortunately, gifted craftsmen, sorry scientists have uncovered the true readings from the old biased thermometers which they explain carefully in a 67 page impenetrable document.
Chris Gillham has soldiered through the new “ACORN 2” adjustments that the Australian Bureau of Meteorology has o-so-quietly released and Australians are just waking up to find that our coldest mornings back in 1910 were even colder than anyone realized at the time. Graham Lloyd is reporting in The Australian how the second rewrite in six years increases the warming by 23% . (Where was the ABC announcement?)
The ACORN series of the Bureau of Meteorology includes 112 stations. Their report lists the warming trends per decade in Table 9. I converted that into the total warming since 1910 and graphed that below.
About one third of the warming of our mean temperature is due to man-made adjustments
Comparing AWAP (semi-raw) to the […]
It’s summer, so the BoM and ABC can’t help themselves.
Albany, Hottest Town in Australia
Last week Marble Bar “hit an all time record”. This week, it’s Alice Springs. But the Australian BOM still haven’t used their own fabulous World Class ACORN Temperature data to find the hottest day ever in Australia. They’re still telling people it was in Oodnadatta, on Jan 2nd in 1960, but even dumb deniers know that according to ACORN temperatures hit 51.2C in Albany in far south WA in 1933.
[Marble Bar Dec 28th, 2018] The high temperature occurred at 12:39 pm local time. At that stage, it appeared Marble Bar could crack 50 for the first time — and perhaps even threaten the all-time Australian record of 50.7 in Oodnadatta, South Australia.
Chris Gillham pointed this out the strange anomaly of the cool coastal town that was hotter than a million square kilometers of desert, but four years later the BOM still haven’t resolved the situation. The 51.2C temperature is still there in the data, but the Top Ten Highest Temperature Records remain exactly the same. Is Albany, or is it not, the true record holder? Or is it that the […]
Yet again, we have to ask: does the Bureau of Meteorology care about Australia’s long term climate trend? Are they even trying?
Bourke could be one of the top ten most influential temperature sites in the world, mostly by virtue of being miles from anywhere, and used to homogenize a large slab of the land mass of Australia. Bill Johnston documents how changes to the site create most of the temperature trend.
The Bureau of Meteorology’s fancy magical and secret homogenization protocol does not detect changes that obviously affect the temperature (like the clearing in the photo below). But sometimes the BoM make “corrections” because of site changes that don’t appear to have mattered. Is it conveniently selective or just inept?
The BoM don’t even document major site changes a lot of the time. Even iconic sites that affect huge areas are badly managed. Someone got the tractor and plough and cleared the vegetation. As usual, a citizen scientist, a volunteer, documents it (along with a suite of other site changes).
In the last ten years land was cleared around the thermometer. This denuded area has a lower humidity, and higher volatility of temperatures. The data from this thermometer […]
Australia’s oldest and most iconic site has changed dramatically, but major site changes are not even being recorded.
The way the Bureau of Meteorology (BoM) treat this site says a lot about the unscientific, shoddy, biased standards it uses at sites everywhere. This was their headquarters. Experts walked past new walls, construction and highways, yet they didn’t record them? Beggars belief.
Just as Peter Ridd warns us that we can’t trust some marine and reef institutes, Bill Johnston is the whistle-blower warning us about the Bureau of Met. There is no law of science that says human institutes are infallible. When they run off the rails, how do we find out? Ridd issued a warning from the inside and ended up in the Federal Court. When people, like Bill write from the outside, the BoM waves the peer-review gatekeeper, and anonymous reviewers can easily shut that gate, and without any penalty.
The louvered thermometer house in front of the Observatory in 1864. (Courtesy of the State Library of NSW.)
Sydney Observatory is one of the longest running stations in the Southern Hemisphere, starting in 1859. It was Australia’s premier meteorology site and in the 1800’s it was known […]
With only a million dollars a day it’s hard for the BoM to keep up with their own stations. Luckily Bill Johnston has arrived to help out for free. The BoM announced that it was Canberra’s hottest ever day last week, but forgot to check whether the heat was due to the site moving three times, changes in thermometers and a wind profiler they installed themselves in 2010.
Normally the BoM would detect and correct for these sorts of things by using Homogenisation Magic (HM). That’s where they spot these effects by comparing a station with surrounding stations. However in this case HM missed all three site moves and the wind profiler. It looks like those might add up to 2.2°C of artificial warming. Nothing to worry about, but the hottest ever record will have to be shredded, and naturally, the BoM will need to issue a correction with at least as much fuss and coverage as the mistaken headlines. It’s only fair…
After the effect of rainfall is removed there are at least three site moves, a screen change, equipment change, and alterations to the surrounding area that may influence the site. These step changes align with documented […]
We are ramping up the end of this series because we’ve been informed that both of David’s papers will be published in October — one on the error in the climate models and one on the notch delay solar theory.
There are emphatic (and ignorant) claims that David’s predictions have failed, and a flaw was found — both are wrong. After all that fuss and pointless flamewars, his prediction remains almost exactly the same as it was in 2014. It is still untested. It is a strange coincidence of timing that the theory is up for a critical trial so definitively, so soon, but there it is. The fall in solar radiation that happened in 2004 is one of the three largest in 400 years. We are waiting to see if that will have an effect, after the expected delay of one sunspot cycle. For a real scientist there is no shame in putting an idea up on the chopping block. Hypothesize, test, and observe. As David says: “If the predicted cooling does not eventuate then the notch-delay hypothesis is false.” Without real predictions, it’s not real science.
But prediction is a risky business. There are so many ways […]
Who would have thought that temperature stations near concrete are warming faster than those over grass?
Anthony Watts carefully analyzed all 1,218 surface stations in the USA and managed to find 410 good ones in the last 35 years (1979 onwards) — which is an achievement in itself. But the real point of his paper is to see if the best stations show less warming than the rest. (The good ones are the ones that are not near artificial heat sources, and haven’t been moved around). Watts finds (again) that the NOAA homogenisation practice appears to be adjusting the good stations up to the bad ones.
About a third of the US recorded warming trend in the last 35 years may have just disappeared…
Watts presents it today at the AGU 2015 conference.
Congratulations to Anthony Watts for what must have been a mammoth amount of work. The irony is that the conclusion — that hot air radiates or rises off concrete, asphalt, and from bricks affects thermometers is banal, yet so few can demonstrate it across such a big network. We have to wonder why no one else was looking… Maybe the Earth’s climate doesn’t matter that much to […]
Blame dry weather and electronic sensors for a lot of Australia’s warming trend…
In this provocative report, retired research scientist Bill Johnston analyzes Australian weather records in a fairly sophisticated and very detailed way, and finds they are “wholly unsuitable” for calculating long term trends. He uses a multi-pronged approach looking at temperatures, historical documents, statistical step changes, and in a novel process studies the way temperature varies with rainfall as well.
His two major findings are that local rainfall (or lack of) has a major impact on temperatures in a town, and that the introduction of the electronic sensors in the mid 1990s caused an abrupt step increase in maximum temperatures across Australia. There will be a lot more to say about these findings in coming months — the questions they raise are very pointed. Reading, between the lines, if Johnston is right, a lot of the advertised record heat across Australia has more to do with equipment changes, homogenisation, and rainfall patterns than a long term trend.
Bill Johnston: On Data Quality [PDF]
“Trends are not steps; and temperature changes due to station changes, instruments and processing is not climate change”, he […]
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