Thanks to Ian George for noticing this recent large change in the ranking of 2009 compared to 1998 in the BoM chart of annual mean temperature anomalies.
The charts come from the BoM Annual Australian Climate Statement 2011 and Annual Australian Climate Statement 2012.
Animation of the graphs for two years.
Monthly Archives: March 2013
Australian Bureau of Meteorology (BoM) own time series graphs web page fails to back up their claims of the “hottest January ever” Australia-wide.
On page 10 of 23 the BoM “Special Climate Statement 43 – extreme heat in January 2013” – Updated 1 February 2013 – says –
“2.5 Monthly mean temperatures for January
January 2013 was Australia’s hottest month on record. Averaged nationally, the
maximum temperature was 36.92°C, 2.28°C above the 1961-1990 average, and 0.11°C above the previous record of 36.81°C, set in January 1932. The monthly mean
temperature (day and night combined) also set a record. It was 29.68°C, 1.77°C above the 1961-1990 average and 0.27°C above the previous record of 29.41°C, also set in January 1932.”
Now making graphs for each of the States and Territory at this BoM web page. When you check out what I have done, make sure you set the page to Mean Temperature – choose your State – then pick January.
Continue reading Australian Bureau of Meteorology (BoM) own time series graphs web page fails to back up their claims of the “hottest January ever” Australia-wide.
Perth Metro BoM station 09225 looks to be reading too warm from mid-2011 – could much publicised summer hot days be exaggerated ?
Perth summers (Dec-Jan-Feb) as measured at Perth Metro in Mount Lawley looked too warm for 2012 and 2013 when compared with Perth Airport 09021. The differences for summer mean max between the Airport and the old Regional office (1898-1992) going back to 1945 and Perth Metro 1994-2013 show that 2012 and 2013 fall clearly outside a long established band.
I noticed there were instrument changes at Perth Metro in July 2011 – not sure if they were the instruments that read the daily max. I checked Perth Airport summers against Pearce RAAF 1994-2013 and all differences fell in a band – which also suggests that Perth Metro is faulty.
Anybody reading our media just now will find plenty of articles from the BoM spruiking the “hottest summer ever” for Australia.
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Looking forward to hearing what others think of the Perth data.
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