The Australian Department of Treasury website states that extreme weather events are expected to occur with increased frequency and severity. I asked in the recent senate estimates what sources Treasury had based this prediction. I was informed that it was consistent with the government-stated position on climate change and climate action.
Yet the United Nations Intergovernmental Panel on Climate Change (IPCC) 6th Assessment Report on the Science says there have been no detectable increase in the number of natural disasters. It summarises the available scientific evidence on the signal of natural disasters and finds no change in signals for weather-related events, including river flood, rain in terms of heavy precipitation, landslide, drought, fire, wind speed, tropical cyclone, relative, sea level, coastal flood and marine heat wave.
The Minister was not prepared to take my question on notice regarding their source of empirical scientific data.
Transcript
Senator ROBERTS: The next one is fairly straightforward. A statement on the Treasury website states that ‘Extreme weather events are also expected to occur with increased severity and frequency’. On what are you basing that statement?
Ms Kelley: We worked with the Department of Climate Change, Energy, the Environment and Water, the Department of the Prime Minister and Cabinet and the AOFM in terms of the statement, and the statement is consistent with the government’s stated position on climate change and climate action. The statement uses publicly available information from the 2023-24 budget and the Annual Climate Change Statement.
Senator ROBERTS: I’m sure it’s consistent with lots of things, because you just told me where the sources of it are. I’ll go back to the quote: ‘Extreme weather events are also expected to occur with increased frequency and severity’. I’ll direct you to the United Nations Intergovernmental Panel on Climate Change’s sixth assessment report on the science, chapter 12, table 12.12. That summarises the available scientific evidence on the signal of natural disasters. I’ll run through some of the types of disasters where the United Nations says there’s been no detectable increase in the number of natural disasters: frost; river flood; rain, measured in terms of heavy precipitation or mean precipitation; landslide; drought; fire weather; wind speed; windstorm; tropical cyclone; dust storm; heavy snowfall; hail; relative sea level; coastal flood; and marine heatwave. There’s been no change in signal for any of these events according to the Intergovernmental Panel on Climate Change. So I’m wondering what type of weather event this increased risk you are claiming is going to come from. What type of natural disaster are you talking about?
Ms Kelley: That’s probably not my area within the department, so—
Senator ROBERTS: Do you think I should take it up with the department that you copied your policy from?
Ms Kelley: Yes, the Department of Climate Change, Energy, the Environment and Water is probably the most appropriate department.
Senator ROBERTS: So you’ve taken their material and just placed it on your website? You’ve trusted them.
Ms Kelley: We have been wholly consistent with government policy in terms of the statement. It’s informed by a range of different pieces of evidence.
Senator ROBERTS: Great. Thank you very much.
Senator Gallagher: Senator Roberts, I think we’re going to have to agree to disagree on this.
Senator ROBERTS: No, we don’t have to agree to disagree. We just have to get the data. Perhaps you could take it on notice, Minister, to get me that data.
CHAIR: Thank you very much—
Ms Kelley: Sorry, could I just add to the question about—
Senator ROBERTS: I wouldn’t be winking about it, Senator Gallagher.
Senator Gallagher: Eh?
Senator ROBERTS: I wouldn’t be winking about it.
Senator Gallagher: No, well, this comes up a lot—
Senator ROBERTS: This is costing this country trillions. This is costing our country trillions of dollars.
Senator Gallagher: I think, fundamentally, we have a different—
Senator ROBERTS: Mine’s informed by the data.
Senator Gallagher: You strongly object to climate science. We don’t.
Senator ROBERTS: I don’t reject it. That’s a false statement. I don’t reject the climate science; I follow the climate science.
CHAIR: Senator Roberts, thank you. Ms Kelley would like to make a final remark.
Ms Kelley: I just want to answer your question about the costs. I’ve got some clarification. We’ve borne our own costs, and Ms O’Donnell is bearing hers. There are no other decisions to be made about costs.
Senator ROBERTS: Thank you very much. I just make the point that the minister is not willing to provide me with a source for that advice to the government. You’re a senior member of the government.
Senator Gallagher: I think at a number of estimates hearings, on a number of questions on notice, that information has been provided, Senator Roberts. If there’s anything further we can provide, I’m happy to add—
Senator ROBERTS: Senator Gallagher, I need to correct you. The logical scientific points, with the empirical scientific data, have never been provided to me by anyone.
CHAIR: Thank you. Thank you, Minister. Senator Roberts, I’m just going to make the decision that there’s a repetition to your line of questioning. Thank you very much for your brevity in general.