Satellites Show Sydney Cooling For 18 Years

The BOM Sydney thermometer is cleverly located adjacent to 21 lanes of asphalt, and shows a hockey stick of warming.

ScreenHunter_3274 Oct. 03 05.07ScreenHunter_3661 Oct. 13 06.46

By contrast, satellite temperatures taken of the lower troposphere over Sydney show a slight cooling trend over the last 18 years

ScreenHunter_3660 Oct. 13 06.44

ScreenHunter_3662 Oct. 13 06.50

BOM then takes the severely tainted urban data, and contaminates surrounding rural stations through a process known as “homogenisation”

About stevengoddard

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12 Responses to Satellites Show Sydney Cooling For 18 Years

  1. philjourdan says:

    maybe they should call their product “Milk Duds”

  2. Ivan says:

    Hardly surprising. The BoM likes asphalt. If you check their list for the “High Quality” Reference Climate Station (RCS) Network, the vast majority are situated at airports:

    • Dave N says:

      At least NCDC acknowledges (i.e. classifies) poor siting; the bad news is that they totally ignore it when ti comes to scaring the crap out of people.

  3. Truthseeker says:

    I know that location. It is the southern entrance/exit to the Sydney Harbour Bridge. You may notice a curved road on the left of the photo. That is the entrance from the West (the bridge is roughly North/South) that goes through a 270 degree spiral to get onto the bridge. A lot of fun late at night if there is no traffic …

    To be fair, that area has been like that for decades. The bridge was completed in 1923 (from memory).

  4. Acres of Statuary says:

    I’ve been meaning to ask why the UHI temperature graphs that Tony has been posting are sinusoidal with a rising trend rather than being sinusoidal with step function increases when a new piece of urban heat island is constructed in the vicinity. The traffic could certainly have something to do with it. It would be interesting to see what the correlation of temperature with traffic is after about 1950.

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