Pragmatism is belatedly beating carbon purity as the West seeks to survive the economic consequences of Russia’s monstrous Ukraine war. Only months after its Glasgow swearing of allegiance to the climate catechism that requires faith in scientifically untested computer-programmed prophesies, the West has seen the light – and the energy needed to power it. By grabbing at the vilified, carbon-emitting economic  lifeline of fossil fuels, by rediscovering the energising virtues of the spurned coal, by embracing the scorned fracking in a desperate search for gas, by re-opening the closed off-shore petroleum leases to keep industry working, and by preferring ‘dangerous’ nuclear power to winters of freezing in the dark, a severe dose of reality has slowed the West’s race to economic destruction. The two wheels of the climate change cart – the scientifically unprovable words ‘catastrophic’ and ‘irreversible’ – that is carrying the democratic world to economic subjugation under a Putin-Xi authoritarian axis, are looking increasingly wobbly.

These two words, the key to the climate debate, have never been the subject of empirical, observed scientific proof. There is little disagreement that there is climate change; the climate has always been changing. But ‘catastrophic’ and ‘irreversible’ (beyond a computer-generated ‘tipping point’) that occupy the central role as drivers of the claimed climate crisis, exist only in computer modelling of what many scientists, in good faith, believe to be the likely outcome of observable current trends. The dogma that ‘the science is settled’ on climate change requires a belief not in proven scientific facts but in the accuracy of scientists’ computer projections of the yet-to-be-demonstrated future consequences of observable facts.

So why should these scientists be believed? The traditional ‘scientific method’ of examining a theory provides the best, but by no means certain, prospect of believable outcomes. This involves surviving the ‘falsification’ principle of rigorous endeavours to refute the theory, so that the scientific consensus eventually accepts it as truth. That is the rock on which the climate change crisis rests. But as an article in last week’s Conversation noted, ‘even if scientists have repeatedly tried, but failed, to refute a given theory, the history of science suggests at some point in the future it may still turn out to be false when new evidence comes to light.’

After decades of  steadily increasing support for the ‘climate crisis’ theory, evidence to the contrary is raising its head. This is in addition to the negative impact of repeated failures of a multitude of past official forecasts of impending climate disaster. Earlier this year, four leading Italian scientists from universities in Milan, Verona and Padua and the National Institute of Nuclear Physics, published a review of historical climate data, finding no clear positive trend of extreme events and concluding that the current fear of a ‘climate emergency’ is not supported by the scientific data.

This means, they said, that altering our priorities with negative effects ‘could prove deleterious to our ability to face the challenges of the future, (and) squandering natural and human resources’. Their paper, A critical assessment of extreme events trends in times of global warming, is a survey of recent research (mirroring  the IPCC’s approach)  that appeared in the European Physical Journal Plus. ‘Since its origins, the human species has been confronted with the negative effects of the climate; historical climatology has repeatedly used the concept of climate deterioration in order to explain negative effect of extreme events (mainly drought, diluvial phases and cold periods) on civilisation. Today, we are facing a warm phase and, for the first time, we have monitoring capabilities that enable us to objectively evaluate its effects’. These show that, ‘On the basis of the observational data, the climate crisis that, according to many sources, we are experiencing today, is not yet evident.’

The scientists found that rainfall intensity and frequency was stationary in many parts of the world. Tropical hurricanes and cyclones showed little change over the long term, and the same is true of US tornadoes. Other meteorological categories including natural disasters, floods, droughts and ecosystem productivity showed no ‘clear positive trend of extreme events’. Regarding ecosystems, the scientists noted a considerable ‘greening’ of global plant biomass in recent decades caused by higher levels of carbon dioxide in the atmosphere. Satellite data show ‘greening’ trends over most of the planet, increasing food yields and pushing back of deserts

But the scientists nevertheless believe there is a need for action on the climate: ‘We should work to minimise our impact on the planet and to minimise air and water pollution…. How the climate of the twenty-first century will play out is a topic of deep uncertainty. We need to increase our resiliency to whatever the future climate will present us…(But) we need to remind ourselves that addressing climate change is not an end in itself and is not the only problem the world is facing.’

This cautionary note was echoed in a report quoted in the latest Weekend Australian from some of Australia’s most senior climate scientists led by UNSW Professor Andy Pitman. It warned that bank regulators, with little understanding of the uncertainty inherent in climate model projections, could cause ‘major systemic risk to the global financial system’ by their continued use.’ It is not science designed for the financial sector’, as physical climate models do not represent weather, so imposing a serious limitation in determining future climate risk for the financial sector. Yet Australia’s Reserve Bank will use network-derived climate scenarios in its internal analysis of climate-related risks. Most regulators, banks, insurers and investors are using projection-based scenarios ‘without fully accounting for uncertainty’.

This follows Pitman’s submission to APRA on its draft guidelines on climate risk that the corporate sector could be preparing for the financial costs of climate change based on misleading and flawed advice from the prudential regulator. ‘There is next to no capacity to provide advice to business on how the joint probability of multiple extreme weather events will change in the future.’

The only thing certain about climate science is uncertainty.