I keep reading psychologists warning that talking about how terrible climate change will be is counterproductive. Rather than causing the deniers to see the error of their ways, it just makes them close their minds to further argument.

So this column isn’t for them. Rather, it’s to speak to the rest of us – those who don’t try to tell the scientists they’ve got it all wrong – to review the latest evidence that climate change is already upon us (what sane person could not have realised it?) and getting worse as each year flashes by our eyes.

Illustration: Andrew Dyson

I fear for my five grandkids’ future (as I may have mentioned before) but, to tell the truth, I’m glad I’ll be dead and gone before it reaches its worst. What we must do, like all those who voted teal at the last election, is to press both major parties to speed up our efforts and make Australia a leader rather than a laggard in the global push to limit how bad it gets.

Professor Albert Van Dijk of the Australian National University, an expert on precipitation, is part of an international team of researchers who’ve issued a report, the Global Water Monitor, using data from thousands of ground stations and satellites to document the effect of last year’s record heat on the world’s water cycle.

“We found global warming is profoundly changing the water cycle,” he says. “As a result, we are seeing more rapid and severe droughts, as well as more severe storms and flood events.”

Van Dijk says the most obvious sign of the climate crisis is the unprecedented heatwaves that swept the globe in 2023. Some 77 countries experienced their highest average annual temperature in at least 45 years. This “gave us a glimpse of what a typical year with 1.5 degrees Celsius of warming may look like,” he says. Warming consistently more than 1.5 degrees above pre-industrial levels is expected to have extreme and irreversible impacts on the Earth’s system.

“The high temperatures were often accompanied by very low air humidity. The relative air humidity of the global land surface was the second-driest on record in 2023. Rapid drying of farms and forests caused crops to fail and forests to burn.

“Lack of rain and soaring temperatures intensified multi-year droughts in vulnerable regions such as South America, the Horn of Africa and the Mediterranean ... This continuing trend towards drier conditions is threatening agriculture, biodiversity and overall water security.”