JoNova

A science presenter, writer, speaker & former TV host; author of The Skeptic's Handbook (over 200,000 copies distributed & available in 15 languages).


Handbooks


Advertising


Australian Speakers Agency



GoldNerds

The nerds have the numbers on precious metals investments on the ASX



The Skeptics Handbook

Think it has been debunked? See here.

The Skeptics Handbook II

Climate Money Paper



Archives

Books

Climate change causes time travel? Humans turning clock back 50 million years

The Pliocene is coming to get you.

The shocking news is that the world cooled for 50 million years, then, just like that, two hundred years ago, humans stopped the cooling, and turned the global clock, or thermometer, whateveryoucallit, around. Now, unleash the disaster — by 2030 Earth is going to resemble the mid-Pliocene. So in just 11 years time, it will be like 3 million years ago. Apparently we are losing 250,000 years every year. Buy a solar panel now!

You think I’m joking:

Humans may be reversing the climate clock, by 50 million years

Our future on Earth may also be our past.

In a study published Monday (Dec. 10, 2018) in the Proceedings of the National Academy of Sciences, researchers show that humans are reversing a long-term cooling trend tracing back at least 50 million years. And it’s taken just two centuries.

By 2030, Earth’s climate is expected to resemble that of the mid-Pliocene, going back more than 3 million years in geologic time.

How bad was the Pliocene?

In the Pliocene, North and South America joined tectonically, the climate was arid, land bridges allowed animals to spread across continents [...]

Round Five: Ignore the main point, repeat the irrelevant

The debate with Paleoclimatologist Dr Andrew Glikson about the evidence for Climate change has reached a telling point.  There is a gaping hole.

Through four rounds of to and fro, I’ve been asking for evidence that the predicted (critical) “hot spot” was there above the equator, and we were drilling down to this point. It’s the weak link in the chain of evidence, and if the climate models are wrong on this element, you can kiss goodbye to the catastrophe. Everything else might be right, but there’s no major warming if there’s no strong amplifying (positive) feedback, and and there is no amplifying feedback from water vapor if there is no hot spot. Indeed, I quoted evidence from three peer reviewed studies that show that we’re headed for a half a measly degree of warming rather than a baking 3 – 6 degrees.

In Round 2 Glikson didn’t mention Lindzen, Spencer or Douglass (the three independent papers which suggest that predicted feedbacks are missing or negative). Instead he suggested “Sherwood 2008” found the hot-spot. I pointed out that Sherwood used wind-gauges instead of thermometers. To believe he is right we need to throw out thousands of thermometer readings and [...]