JoNova

A science presenter, writer, speaker & former TV host; author of The Skeptic's Handbook (over 200,000 copies distributed & available in 15 languages).


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Magically correcting Australia’s thermometers from 1,500 kilometers away

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 […]

Bureau of Met reads tea leaves and finds warming at Horn Island that no thermometer can see

Ken Stewart has been looking at the mysterious pattern of temperatures on Horn Island –– right at the top of Cape York Australia. It’s almost as far north as things get in Australia. There was no thermometer there before 1995, so the Bureau of Meteorology has rattled the nearest tea-leaves to find out how warm it was.

The towns listed on the map are its nearest neighbours. “Near”, in the Australian sense, meaning loosely within 500 kilometers.

Horn Island and it’s nearest neighbours

This, below, is the way 70 years of temperature dregs roll at all those sites.

This is what the Bureau of Meteorology sees (note the scale has changed on the temp axis). That’s two degrees of warming in far north Queensland.

So the average minimum temperature now looks half a degree cooler in 1960 than what your lying eyeballs suggest.

Ken goes into much more detail and deserves our thanks for bothering to try to unpack the mysterious merging of thermometer records in at the BoM department of Tasseomancy.

Visit his site: Garbage In, Garbage Out- Horn Island

 

10 out of 10 based on 59 ratings […]

Hottest Day recorded and deleted in Australia was 51.7 C in Bourke in 1909

Do the BOM even care about Australia’s climate?

Craig Kelly in our National Archives yesterday

The hottest day ever recorded in Australia with modern official equipment was Jan 3rd, 1909 in Bourke where the temperature blistered at 51.7C (125F).

Yesterday the Honorable Craig Kelly MP trawled through historic archives looking for temperature records from a century ago to see if he could confirm that it really was 125F in Bourke that day, and whether it was almost that hot in Brewarrina too. Craig Kelly wants the record restored.

The site at Bourke is one of the oldest in Australia, starting in 1871. It’s also very influential because it was used to estimate the temperatures of vast remote areas around it. By 1909 there was already nearly 40 years of data at Bourke, and the Stevenson Screen had just been replaced so it was almost brand new. There was no airport tarmac either, so in 1909 the site was probably better than most modern sites are today. But the 1909 “hottest ever record” was deleted after an investigation in 1997 by Blair Trewin. It was written off as an error partly because it was recorded on a Sunday and […]

Announcing BomWatch: Auditing the fake warming created by site changes near the Great Barrier Reef

Fake Warming in Queensland: The BOM says the sites didn’t move, but photos show they did.

The warming at these four sites alongside the Great Barrier Reef is due to site changes, incompetence, poor record keeping and “adjustments”. Map: Terrametrics, Map data Google 2020

All along the coast near the Great Barrier Reef, the BOM has claimed temperatures have warmed in the last 50 years, and they’ve calculated it to a tenth of a degree. To get that kind of accuracy the thermometers need to be carefully placed, and the BOM needs to know exactly where they were, but they don’t.

The BOM keeps long pages of site descriptions and exact dates of moves and equipment changes, but historic photos show the records are wrong. The BOM will solemnly swear a site was in the same place for decades but photographs and archives show the sites were often moved as developments sprang up around them. The BOM didn’t keep the records and didn’t bother to check. If the thermometer moved to a warmer location or it warmed because they replaced the standard 230-litre Stevenson screen with a 60-litre toy one, or no longer cleaned it […]

ACORN adjustments robbed Marble Bar of its legendary world record. Death Valley now longest hottest place

UPDATE: The Hon. Craig Kelly MP was so appalled by this story he has taken this to the Australian Parliament already where The Labor Party was so afraid they interrupted his allocated 15 minute speech just to stop him finishing. They even called a formal Division which means the bell is rung and all the missing MPs have to return to the Chamber to vote. See that on Kelly’s Facebook page. Who cares about our climate and who covers up for incompetent bureaucrats?!

For generations it was a Guinness Book of Records type thing. Now it’s gone. In 1924 Marble Bar set a world record of the most consecutive days of 100 °F (37.8 °C) or above, during an incredible period of 160 days starting in 1923. It was legend — but thanks to the genius homogenized adjustments, we now find out all along it was wrong. It’s another ACORN triumph, rewriting history, extinguishing the hot days of days long gone. The experts at the Australian Bureau of Meteorology (BoM) have reanalyzed the temperatures from 4000 km away and nine decades in the future and apparently it wasn’t that hot.

Chris Gillham wonders how the bureau figured out the Marble […]

Royal Commission on Fires based on Myth of Hotter-Drier Summer

More lies by omission from the Bureau of Misinformation

When a PM gets it totally wrong, where is the BOM…

“What this royal commission is looking at are the practical things that must be done to keep Australians safer and safe in longer, hotter, drier summers.” — Scott Morrison. — ABC

The BoM, like Prof Andy Pitman of UNSW, and all other climate scientists know that “climate change” will make the world a hotter wetter place. Who are the evaporation deniers among us? Yet, apart from one momentary candid admission from Professor Andy Pitman, which of our paid public servants will correct the PM when he says things that are flagrantly, 100% wrong? Will a Royal Commission really be forced to accept a complete myth?

Looks like extra CO2 “causes” Summer rainfall in Australia to increase

Apparently, we should burn fossil fuels to stop fires. You know it makes sense…

Australian rainfall trends, Bureau of Meteorology,

But wait, what about Southern Australia?

To cover every last caveat, it’s possible that “climate change” could change where rain falls, or when rain falls — so lets look at the BoM’s own rainfall records.

CO2 apparently makes summers wetter across […]

What the BOM don’t say: it’s not the hottest year in Australia according to satellites

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 […]

Cricketers to freeze: Boxing Day Tests in Melbourne cooling since WWII

Peacetime maximums on Boxing Day are just not what they used to be

The ABC is afraid that Boxing day cricket may “go extinct” due to the heat. Chris Gillham at WAClimate.net graphed the December 26 test temperatures in Melbourne all the way back to 1855. Obviously, using ABC-ScienceTM (absurdio-extrapolatory et al) what we are really looking at is ominous cooling. To help the ABC, let’s adjust headlines accordingly.

“Injuries are forecast to rise as maximum temperatures fall in Melbourne on Boxing Day.”

The trend is clear in a supercomputer somewhere. If this decline continues the second polynomial will hit zero in 440 years. Cricketers won’t know what heat is.

The graphs here confirm the newspaper stories of a history of phenomenal Boxing day heat — especially in the late 1800s and circa World War II. Ergo, wars cause global warming (in Melbourne, on Dec 26).

…This is bound to change…

Two things to keep in mind, apart from designing a team beanie, is that many of the temperatures in the 1800s weren’t from Stevenson screens and so are debatable. On the other hand, the urban heat island effect is strong and site maintenance is weak, so […]

ABC, Climate experts do damage control on 1896 heatwave story, can’t say why, but they “know” it was cooler. Faith!

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 […]

Hottest ever day in Australia — especially if you ignore history – Eg. 1896

Tuesday was Australia’s hottest day on record sayth the Bureau of Meteorology.

And perhaps it was. But look at the temperatures reported in newspapers across the country during the month of January in 1896 when people were going mad with axes, dropping dead in coaches and railway stations and birds were falling lifeless from the trees? Emergency trains were ferrying people from the country to the mountains. Panic stricken people fled the outback on special trains and the death toll was in the hundreds.

Fifty years later scientists would publish papers talking about how Australian summers had cooled since then.

How does the BOM know for sure that it was not hotter on any one of these days? Perhaps they don’t. Wouldn’t it be more honest of the BOM to mention that? It’s not like billions of dollars depends upon it…

Seems the only time the ABC or BOM suddenly discover our historic weather records is when we get unseasonal snow or freezing cold.

See below for the links to the newspaper stories for all of these temperatures (Click to enlarge the map)

Photo: Jo Nova

The heatwave started in the West on Jan 1st and travelled […]