Jennifer Marohasy
Senior Fellow
Jennifer Marohasy is a Senior Fellow with responsibilities for Climate Change in the Research Program at the IPA.
Dr Marohasy has published in prestigious scientific and law journals over the last few years, these have included: Atmospheric Research, Advances in Atmospheric Research, Wetlands Ecology and Management, Human and Ecological Risk Assessment, Public Law Review and Environmental Law and Management. She has also written for various newspapers and magazines including The Australian, The Courier Mail, The Herald Sun, and for ten years was a fortnightly columnist for Fairfax Media’s rural flagship, The Land. Dr Marohasy remains a regular contributor to e-journal On Line Opinion.
Dr Marohasy first worked for the IPA between 2003 and 2009; writing a seminal paper that showed rising-salinity in the Murray River was contrived – a product of computer modelling. Actual salinity levels had been falling for over 20-years as a consequence of successful government-sponsored drainage management programs in irrigations areas.
Between 2009 and 2015 Dr Marohasy was involved with various university research programs. Her re-appointment at the IPA in August 2015 followed the termination of an adjunct position at Central Queensland University following the ousting of Bjorn Lomborg from the University of Western Australia. Her work at CQU was wholly funded by the B. Macfie Family Foundation, and this continues to be the source of funding for her employment at the IPA.
Dr Marohasy describes herself as a utilitarian libertarian: she much prefers appeals to reason, logic and evidence over authority and consensus.
11 April 2022
Epicentre of Mass Coral Bleaching – Still So Beautiful (Part 1)
It is all over the news, right across the world: the Great Barrier Reef is bleaching – again. Children can’t sleep at night: it is not only the war in the Ukraine keeping them awake at night, but also our apparent disregard for nature. Except! On 10th April 2022 I went to the very epicentre of the claimed latest severe mass
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
19 March 2022
Not Expecting Coral Bleaching During a La Niña
The Australian Broadcasting Corporation (ABC) has uploaded some footage of John Brewer Reef that is part of the Underwater Museum of Art, the footage was apparently taken by the World Wide Fund for Nature (WWF) in February.  It does not show a lot of bleached coral, but it does show some badly bleached individual colonies – and a lot of healthy
16 March 2022
The Disaster at Lismore: Some Rainfall Statistics
Torrential rains along the east coast of Australia have caused terrible flooding. I’ve previously provided some statistics and context for southeast Queensland, but the focus has since shifted to the town of Lismore in northern New South Wales. The wettest year on record at Lismore is 1893 with a total rainfall of 2,213 mms. The wettest day on record at Lismore
10 March 2022
Rain Bom
Are CO2 emissions to blame for the floods? The recent torrential rains in South East Queensland are not unprecedented. The Australian 24-hour rainfall record of 907mm is still Crohamhurst in the Brisbane catchment recorded on 3 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
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
27 February 2022
Brisbane Flooding, Again
Flooding rains have soaked south-east Queensland, again. My heart goes out to everyone affected by flood waters. I’ve been watching the rain gauge at Lowood (Station# 040120), located just 10 kms to the south of Wivenhoe Dam upstream of the city of Brisbane. A total of 240 mms fell yesterday (Saturday 26th February) which is a record for any one day
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
21 February 2022
Most Published Studies Exaggerated the Effects of Ocean Acidification
The concept of ocean acidification, and human-caused global warming more generally, could be described as containing a grain of truth embedded in a mountain of nonsense. Indeed, the projected large increase in atmospheric CO2 will at most cause a small reduction in pH – it will not turn the ocean acidic. Yet this is what is implied by the term
