Inflated temperature record in Melbourne

Tom Quirk probably could have been a rocket scientist because he trained as a nuclear physicist, attended Harvard Business School and has been a fellow of three Oxford Colleges (is that like being an Oxford Scholar?). More to the point of Climate Change: The Facts he has been involved in electricity generation including a founding directorship of the Victorian Power Exchange.

His chapter “Taking Melbourne’s Temperature” charts the history of the temperature record in Melbourne from 1856. The bottom line of the story there has apparently been a rise in temperature of 0.3C per century since that time. This challenges the official records which show a much larger increase, especially after 1998.

Melbourne was founded in 1835 as an outer suburb of Launceston by two Tasmanian explorers, Batman and Fawkner. Their names are perpetuated by the Batman Fawkner hotel/hostel in Launceston, close to the heart of the small city near the Transit Centre and a stone’s throw from The Grumpy Piper that houses a bagpipe museum and a whisky tasting bar.

The point of the paper is to explain why there was a jump of 0.6C recorded after 1998. This is attributed to a combination of the urban heat island effect (indicated by the difference of 0.6 compared with the country town of Laverton) and specific factors affecting the microclimate in La Trobe Street.

The key point to note is that the maximum temperature break is coincident with the screening of the La Trobe weather station from southern southerly winds by the construction of the very tall City Gate building …This is a fifteen storey apartment tower completed in 1997 and to its east is a further apartment building completed in 1998.

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11 Responses to Inflated temperature record in Melbourne

  1. RobK

    Tom Quirk does excellent work.

  2. This has been noted frequently in genuine discussions about climate change, especially when it comes to temperature gauges located around airports, carparks etc, but it’s something the MSM refuses to write about. Oh, and no mention of how the BOM ‘homogenises’ temperature records so that they are always increasing.

  3. DaveR

    Our BOM adjusts (homogenises) measured temperature records for a number or reasons, some of which are clearly legitimate. The problem for all Australians is that their homogenisation process is largely secret, and is not externally audited.

    The apparent temperature record shift for the LaTrobe St weather station in 1998, possibly due to new infrastructure encroachment, is just one of the very events which could form the basis for adjustment.

    But all too often BOM will either not adjust (prefering to keep the latest warmer temperatures) or adjust the older record before 1998 upwards to match the current hotter site. The latter leads to ridiculous adjustments where century old temperatures end up 0.5-1.5 deg warmer that their original measurement. This has lead to the disappearance of much hotter episodes than today in the historical record – such as the Federation Drought.

    The trouble with this process is that the entire man-made global warming signal that is claimed to exist is smaller than the adjustment. (And the BOM adjustment processes are secret.)

    What needs to urgently happen in Australia is that all the BOM homogenisation adjustment details need to be made public, and there needs to be a full, external, scientific audit of the BOM’s temperature records.

  4. Mark M

    Melbourne changes monitoring site from city to park, new max temperature averages 1.2C cooler

    Mr Trewin also noted that the Bureau had recently changed its Melbourne monitoring site from the Royal Society of Victoria on La Trobe Street in the city to Olympic Park, near Rod Laver Arena. Maximum temperatures recorded at the new site were on average 1.2 degrees cooler, particularly on cool days, because air coming from the south and west was travelling over parklands rather than the through the city.
    http://www.theage.com.au/victoria/melbourne-weather-summer-2015-still-hot-just-last-year-was-hotter-20150119-12tbhi.html

  5. It is always good to see rational articles about our temperature history – thanks Tom – but I have been pointing out our city, towns and small country towns urban heat islands (UHI’s) for over 25 years.

  6. old bloke

    DaveR
    #2762104, posted on July 13, 2018 at 10:48 am

    What needs to urgently happen in Australia is that all the BOM homogenisation adjustment details need to be made public, and there needs to be a full, external, scientific audit of the BOM’s temperature records.

    A previous Prime Minister did in fact order a full audit of the BoM’s data and procedures following a preliminary audit (carried out by the Bureau’s own auditors) which showed cause for concern.

    This Prime Minister was sacked the next day and the first action of the new government was to shut down the audit “to preserve public confidence in our institutions”.

  7. Ron jenkins

    Laverton,Victoria!is no longer a ‘country’town but is now very suburban and Werribee ,which is situated further from Melbourne,is rapidly approaching the size of Geelong.When I worked at the RAAF Base at Laverton in the eighties Met. readings etc.were taken at a facility on the airfield about 100 metres from the nearest hangar.That airfield no longer exists and in it’s place there is high density housing,a new railway station and a multi storey block which will be the local admin. H.Q. for Target..The adjacent freeway has grown from two lanes to four each way,roughly 25,000 houses have been built between Laverton and the RAAF Base at Point Cook. If Met. readings are still being gathered from the original site at Laverton then they are most definitely now influenced by the heat island effect.

  8. Rohan

    Where’s Mr Whippy when you need him?

  9. Dr Fred Lenin

    Dave ,I walked down Latrobe Street yesterday from Victoria to Swanston ,any temperature taken there is no indication of anything . It is surrounded by huge glass fronted skyscrapers in Exhibition street and Latrobe street ,doubt if any breezes from the south over the Bay would reach the Bom ,the huge volume of traffic would have to influence the temperatures there too , the Botanic Gardens jwould be a more suitable place to read temperatures , still I suppose the present site suits the global warming scam better,dishonesty is rife in our institutions .

  10. cuckoo

    Those shiny glass buildings built adjacent to the Melbourne weather station were also north facing, meaning that throughout winter the station got a double dose of sunshine. And fergawdsake it’s FAWKNER not ‘Faulkner’.

  11. Rafe Champion

    Fixed thanks cuckoo. Confused by the cricketer Faulkner.

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