Media Watch examines the coverage of climate change on commercial talkback radio. While Ian Plimer and Bob Carter are frequently on talkback radio,
Not one orthodox climate scientist – not one – has been interviewed by any of the climate sceptics on Fairfax stations.
As for 2GB, its management said it didn’t have time to respond to our questions. But we’ve been able to find no evidence that Alan Jones or Chris Smith have interviewed any orthodox climate scientists this year.
Talkback radio personality Andrew Bolt comes back with
Chris Smith: Out of our journey of one kilometre there are just 12 mm left, about a half an inch, just over a centimetre, that is the carbon dioxide that global human activity puts into the atmosphere. …
If these statements are true, which they are, why does Holmes sneer at them? Why imply they are false?
Well, 12 mm out of one kilometre is 12 parts per million and human activity has increased CO2 from 280 to 390 parts per million, an increase of 110 parts per million, so Smith’s statement is not so much true as out by a factor of almost 10. But more importantly, Smith’s statement is misleading because it implies that a the human induced change in CO2 in the atmosphere is too small to have any effect when we’ve actually increased it by almost 40%.
Bolt then goes on to tout John Christy’s dubious adjustments to the warming trend shown by satellites. You just know that if a scientist had made adjustements to the trend that had increased it, Bolt would be accusing them of doing something untoward.
Bolt then follows up with another attempted gotcha:
The IPCC said four years ago:
Now an Australian National University survey done for the Garnaut Report says:
GLOBAL temperatures are on the increase, with a new study showing a rise of about half a degree celsius over the past 160 years
So the temperature rise over the past 160 years is .25 degrees lower than the IPCC thought? Jonathan, please explain…
Let’s look at what Bolt’s link actually says
“There is sufficient evidence in the long run of temperature records to support the existence of a warming trend,” Prof Breusch said today. “From the 1850s to today it’s somewhere over half a degree (celsius) a century.
The additional three years for which temperature data are now available were among the warmest on record.”
Prof Breusch said around the mid 1970s there had been an increase in the warming trend.
“There is no evidence of a weakening or reversing trend in more recent years, as suggested by some commentators,” he said.
Half a degree per century over 160 years amounts to an increase of 0.8 degrees, not 0.5 degrees. Bolt needs to learn how to do multiplication.
And note how the study explicity contradicted Bolt’s claims that warming had stopped in recent years, but this simply did not register with Bolt because of his severe confirmation bias.