26 March 2023
Re-imaging Tasmania’s Temperature History, Part 1
This article was originally published on the author’s social media page. This article reflects the author’s ongoing research into the methods used by the Australian Bureau of Meteorology to collect, collate, adjust and publish temperature and rainfall data. Research into this topic have been published in the IPA Climate Change The Facts Publications, with an updated working paper shortly to
31 March 2022
Australia’s Broken Temperature Record (Part 5)
All 224 Homogenised Temperature Series – Including the Bombing of Darwin I can hardly be accused of cherry picking if I present all the temperature series – all four iterations of the homogenised ACORN-SAT temperature series charted with the raw historical series from the Australia Data Archive for Meteorology (ADAM). ADAM is a little-known data set that contains the unhomogenised values: the temperature values as
8 March 2022
Australia’s Broken Temperature Record (Part 4)
Rainfall Not Unprecedented, Skill at Forecasting Dismal Summary: The recent torrential rains in southeast Queensland are not unprecedented. The Australian 24-hour rainfall record of 907 mm is still Crohamhurst in the Brisbane catchment recorded on 3rd February 1893. We don’t know how much rain fell at Crohamhurst in February 2022 because that weather station (#040062) was closed by the Australian Bureau
3 March 2022
Australia’s Broken Temperature Record (Part 3)
The Australian Bureau of Meteorology has now admitted, as I surmised in a blog post on 10th February, that the reference value for 2021 was not actually included in its calculation of the amount of warming as published in the 2021 Annual Climate Statement. In short, we have a 2021 Annual Climate Statement that does not include the new 2021 value in its calculations. This
25 February 2022
Australia’s Broken Temperature Record (Part 2)
It is assumed that temperatures measured at official recording stations with mercury thermometers – by their very nature of being in the past – cannot be changed. But in climate science numbers are continually changed. It is the remodelling of maximum and minimum temperature series before they are combined to calculate the mean, and then added all together, to generate
26 January 2022
Australia’s Broken Temperature Record (Part 1)
The feature image, at the very top of this blog post, shows me at the Goulburn weather station in August a few years back. It could be that the last 26-years of temperature recordings by the Australian Bureau of Meteorology will be found not fit for purpose and will eventually need to be discarded. This would make for a rather large hole
28 August 2020
Rewriting Australia’s Temperature History
This post provides a link to download as a PDF, Chapter 16 of Climate Change The Facts 2020, “Rewriting Australia’s Temperature History”, by Jennifer Marohasy. The Bureau of Meteorology is one of Australia’s most important national public institutions; so much depends on our knowledge of past climate and our ability to predict future trends and events. The Bureau’s recordings of
20 August 2017
Moving In Unison: Maximum Temperatures From Victoria, Australia
This post provides a link to download as a PDF, Chapter 10 of Climate Change The Facts 2017, “Moving in Unison: Maximum Temperatures from Victoria, Australia”, by Jennifer Marohasy & Dr Jaco Vlok. Climate change is often described by complicated statistics. In this chapter, we simply show all the maximum temperature series ever recorded by the Australian Bureau of Meteorology
8 August 2017
The Homogenisation of Rutherglen
This post provides a link to download as a PDF, Chapter 9 of Climate Change The Facts 2017, The Homogenisation of Rutherglen”, by Jennifer Marohasy. When climate scientists from Australia’s Bureau of Meteorology (the Bureau) issue media releases at the beginning of each year telling us that last year was the hottest on record, most of us understand that to
