From Joannenova 5/6 BoMWatch: Climate of the Great Barrier Reef...

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    From Joannenova 5/6



    BoMWatch: Climate of the Great Barrier Reef


    The IPCC says global temperatures have risen .9 deg C since 1950.

    However BOM in Australia is proudly running hotter than the world average .
    They are seemingly confident of their techniques to raise Australian temperatures by manipulation of the raw data .
    When asked about their review of historical data they answer their approach is 100% reproducible and scientifically perfect .
    And then several years later they reinterpret the raw data again to cool past temperatures even more.
    Maybe the first revisions weren`t perfect after all !!
    These are some of the ways they distort and increase temperatures and manipulate the raw data:-


    Press Release June 5th, 2020 (pictures have been omitted from those at JONOVA article site).
    “Despite all the catastrophism and free money, there is no evidence that the climate of the Great Barrier Reef has changed or is likely to change in the future”, says Bill Johnston.
    Dr Johnston uses maps and plans from the National Archives and National Library of Australia and aerial photographs and satellite images to check if changes in temperature data align with site changes detailed by Bureau of Meteorology site-summary and ACORN-SAT (Australian Climate Observations Reference Network – Surface Air Temperature) metadata.


    The site at Gladstone has changed dramatically from 1965 to 2016.
    See the slower transition here.
    BoMWatch: Gladstone
    He has investigated and analyzed more than 300 of Australia’s most important long term sites, and 80 of supposedly top notch ACORN-SAT sites (which is about 75% of them).
    Across Australia no sites have stayed the same. They’ve moved, the original 230-litre Stevenson screens have been replaced with more responsive 60-litre ones; automatic weather stations (AWS) have replaced thermometers; new sites have opened using PVC-screens in the hottest places they could find; observers have gone and they scrimp and save by not mowing the grass or cleaning equipment of dust and grime. “Australia’s warming is mostly due to poor maintenance and electronic thermometers operating in small Stevenson screens”, Dr. Johnston said.
    “Evidence that the Bureau adjusts their datasets to support the warming narrative is unequivocal” Bill said; “sometimes they recognise a site change, sometimes they don’t; it’s a non-random pattern. Many forgotten site changes create a trend they can blame on the climate”.
    “Furthermore, as AWS are hard-wired to Melbourne, Weather language has also changed. “They cook-up a record wherever you are and the weather is always extreme”, Bill said.
    “Photographs, aerodrome plans and documents show metadata relied on to make adjustments are faulty and misleading”, said Bill. “For instance, at Gladstone, they replaced the radar; cleared the bush and installed a 60-litre screen 30-metres away; sacked the staff, demolished the office and its unsurprising that as instruments are no longer regularly serviced and cleaned, temperature has increased relative to the climate”.
    It’s a debacle up at Cairns as well. They didn’t know what happened at the Post Office or that the original aerodrome site was located beside the old apron. They said that in December 1992 the site moved 1.5 km northwest (to the other side of the runway). However, they forgot that it moved to a mound near the centre of the airport in 1966 and that it moved again before September 1983. Also, as one was bulldozed to build the other and no data was missing, another site must have opened in the interim.

    The 60L boxes are too small to allow all the equipment to operate at it’s best. The highly sensitive electronic thermometers at the back are barely 2cm away from the hotter north facing side of the screen. They will record one second spikes in temperature, and the Bureau of Meteorology accepts these spurious spikes as new “hottest day ever” records.


    Inside the crowded little 60-litre screen at Townsville. Note the electronic thermometers at the back are about 2 cm closer to the north facing rear of the screen than maximum and minimum thermometers are; which is enough to make them warmer on warm days. Photo courtesy of BoM (http://www.bom.gov.au/qld/townsville/photos.shtml)

    The Bureau claims the Townsville airport weather station has absolutely not moved: “There are no documented moves until one of 200 m northeast on 8 December 1994”. However, the site moved at least three, possibly four times while it was on the eastern side of the main runway and probably twice between January 1970 when it moved to a mound on the western side and the most recent move to the AWS. “By pretending the site didn’t move before 1994, they attributed trends and changes in the data to the climate”, Bill said.

    Similarly at Rockhampton, where before it moved to a mound near the middle of the airport in about 1956, the original Stevenson screen was near the airport’s northern boundary beside the USAAF garrison and canteen. Warming caused by a satellite communications module installed close-by the second site in 1986 was ignored to imply it was due to the cl
 
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