Archive for the ‘Ice ages’ Category



Alan Carlin argues that the stability of the Earth’s climate within its two fundamental modes, glacial and interglacial, is underestimated or ignored by climate modellers in their desire to talk up supposed human-caused factors.

The UN IPCC reports on climate are truly unusual scientifically.

Without any serious discussion or even an attempt to point out their unusual nature, they try to convince readers that the basic nature of Earth’s climate has been radically changed after millions of years, all because one very minor constituent of the atmosphere has been increasing, as it usually does during interglacial periods in response to higher temperatures.

During this long period the basic nature of Earth’s climate can be characterized as bistability. In other words, Earth has had dual climate equilibria. One occurs during ice ages and the other during interglacial periods. Both are very stable except that Earth flips from the ice age equilibrium to the interglacial roughly every 100,000 years and flips back again after another 10,000 to 12,000 years.

History suggests that we may be close to the next flip into an ice age, the colder of the two bistability climates. This has enormous implications for humans and all life on Earh. But the upper “limit” on interglacial temperatures does not appear to have been breached in all that time.

Credit: Robert A. Rohde / Wikipedia

Credit: Robert A. Rohde / Wikipedia

Quote: The earth has been in an interglacial period known as the Holocene for more than 11,000 years. It was conventional wisdom that the typical interglacial period lasts about 12,000 years, but this has been called into question recently. – Wikipedia

Climate alarmists are primarily concerned that man’s activities will result in Catastrophic Anthropogenic Global Warming (CAGW). They appear to have missed the big picture.

Global atmospheric temperatures as well as atmospheric CO2 have been gradually and erratically falling for significant portions of Earth’s history, but not in unison. Successive ice ages are gradually and unevenly becoming ever colder.

There is evidence that very minor changes in the incidence of sunlight on Earth can and have resulted in plunging Earth and all its living cargo into new ice ages.

Earth is currently in an interglacial period, and based on previous ice ages and the changes in global temperatures during this interglacial period, we are now near the end of it.

Oops, we’ve broken the ice age cycle

Posted: January 13, 2016 by Andrew in alarmism, Ice ages, modelling

credit: P.Schubert


That’s gone and done it, it should be freezing but it’s not and it’s all our fault, obviously.


My thanks to Tony Thomas for this illuminating piece of science-history, first published at Quadrant online.

A great embarrassment to the warming-catastrophic community is that 40 years ago the climatology scare was about cooling and onset of an ice age. Warmists today go, “Pooh! That cooling stuff  then was just a few hyped-up articles in magazines. Cooling never got any traction in the real science community!”

Really? Then explain this away…

perito_moreno_glacier_patagonia-sLetter from the Australian Federal Minister for Science, W.L. (Bill) Morrison, to the President of the Academy of Science,  Professor Badger,  January 9, 1975:

Dear Professor Badger,
I am writing on this occasion to enquire if the Academy could assist the Government by examining, and reporting on, claims recently made in the media, and apparently also by competent scientists that the earth’s climate is changing and that a new ice-age could be on the way.


Albedo regulation of Ice Ages, with no CO2 feedbacks

Posted: October 11, 2015 by oldbrew in Ice ages

The Aletsch Glacier in Switzerland [image credit: ESA]

The Aletsch Glacier in Switzerland [image credit: ESA]

Warwick Hughes points to a very interesting and detailed article: ‘Albedo regulation of Ice Ages, with no CO2 feedbacks’ featuring a ‘secret ingredient’ – you’ll have to read it to find out more.

Guest article by Ralph Ellis who welcomes constructive feedback – some familiar ice ages charts put together in a way I have not seen.

Source: Albedo regulation of Ice Ages, with no CO2 feedbacks | Errors in IPCC climate science

Pierre L. Gosselin provides an English overview of a video presentation in German given by Dr. Sebastian Lüning, a geologist and co-author of the book “The Neglected Sun

This is a geological context that unfortunately is lost on many people like physicists who believe their formulae more than they believe the true facts.

Pierre mentions “All graphics cropped from Lüning’s presentation with permission.” so I won’t copy them here.


A few years ago, I started a wikipedia page on the Gore Effect; the uncanny phenomenon which unleashes snow, hail, torrential rain, icy winds and sleet on the venues where Al Gore is speaking about global warming. The instances are too numerous to list. My page got deleted within a few months by the usual suspects. But it was reborn when another wiki user put up a much more detailed and better referenced version, and I thought it unassailable. But no, the usual suspects are at it again:


Maybe big Al has been armtwisting Jimmy Wales with the promise of a big donation on condition it goes. Who knows.

Contributor ‘Aussie’ notes this morning that the Gore Effect continues undiminished:


I’m of the opinion that before getting into the complexity of numerical modelling, it’s wise to put considerable effort into trying to understand the physical processes at work in the climate system, and the origins of the energy flows that drive them. David Evans’ recent series of posts over at Jo Nova’s site have generated a lot of interesting discussion (despite being roundly ignored by Anthony Watts at WUWT), and I think we can shed some light on the ‘mysterious 11yr lag’ between solar input and climate response.


Once again Pierre L. Gosselin brings fascinating content from the German speaking world

Distinct solar imprint on climate What’s more worrisome,

Schlüchter’s findings show that cold periods can strike very rapidly. Near the edge of Mont Miné Glacier his team found huge tree trunks and discovered that they all had died in just a single year. The scientists were stunned.

“The year of death could be determined to be exactly 8195 years before present. The oxygen isotopes in the Greenland ice show there was a marked cooling around 8200.”

That finding, Schlüchter states, confirmed that the sun is the main driver in climate change.

Article “Giant Of Geology/Glaciology Christian Schlüchter Refutes CO2…Feature Interview Throws Climate Science Into Disarray”


A very important topic indeed, thanks to Judith Curry for raising it.

Climate Etc.

by Judith Curry

 . . . suggesting that Dansgaard-Oeschger events resulted from a combination of the effects of sea ice and ice shelves—structures that help define the margins of ice sheets—to account for both the rapid and the slower parts of the cycle.

View original post 1,221 more words

On Saturday My lady and I travelled with friends Ian and Susan down the Scott Polar Research Institute to a talk given by Rich Pancost, the professor at the head of the Cabot Institute at the University of Bristol. This outfit is comprised of a small team which co-ordinates cross disciplinary effort from other faculties at the University to help address the university’s ‘two big themes’ of environment and health.


(more…) are one of our sceptical European friends


Figure from paper cited later. If the top trace is correct that is a superb match between insolation (P) and proxy. A lot of reading follows.

Under the title “Lindzen lors de l’audit de l’APS : Milankovitch et l’Arctique”

For anglophones

I’ll let skyfall speak and then then link the interesting part.


A new paper in Astronomy and Astrophysics (A&A) finds that cosmogenic nucleides in a section of Epica dome C covering 325-336 kyrs ago doesn’t exhibit Abreu et al’s planetary periods. They conclude that solar variability might have been different then. They don’t consider that Epica ice cores might not be telling them what they think they’re telling them.

Here’s the abstract

No evidence for planetary influence on solar activity 330 000 years ago

A. Cauquoin1⋆, G. M. Raisbeck2, J. Jouzel1, E. Bard3 and ASTER Team3⋆⋆


Clive has published an interesting series of articles on his blog. Here is food for thought.

Does the Moon trigger interglacials?
Posted on January 10, 2014 by Clive Best

Why did the last 8 glacial periods only end when the earth’s orbit around the sun reached maximum eccentricity ? This is the real unsolved mystery of the Ice Ages as discussed in previous posts and recently on scienceofdoom.

  1. Phenomenology of Ice Ages
  2. What causes interglacials – part 1
  3. Part 2: The real cause of interglacials – Resonant dust clouds

With the last of these posts I finally thought there could be a solution to this mystery based on resonant interplanetary dust, but alas I could find no evidence whatsoever in TSI data and dismissed the idea. However I now realise that perhaps there is another solution which may have been looking us in the face all the time.

Link to “Does the Moon trigger interglacials?”


Paul Homewood and I spotted this one coming a number of weeks ago. The mainstream media is now picking up the story. I suggest people consider voting for the only party with a sensible energy policy. This from the Independent:

fuel-povertyCurrently, fuel poverty refers to those households that need to spend more than 10 per cent of their income on fuel “to maintain an adequate level of warmth”. But under the new definition, contained in the Government’s forthcoming Energy Bill, which could be passed by the end of the year, it will apply only to households which need to spend more than average on fuel to keep warm and who would be left with “a residual income below the official poverty line” if they did.


The Talkshop’s favourite weatherman Paul Hudson has been to see Mike Lockwood. It seems the fragile ‘consensus’ on the inability of solar variation to affect climate is coming apart. Now Lockwood is saying a new Maunder or Dalton type minimum is likely upon us, and could cause a general downturn in climatic conditions. This is what we’ve been telling the mainstream solar science community for the last four years. From Paul’s BBC blog:

hudsonIt’s known by climatologists as the ‘Little Ice Age’, a period in the 1600s when harsh winters across the UK and Europe were often severe.

The severe cold went hand in hand with an exceptionally inactive sun, and was called the Maunder solar minimum.

Now a leading scientist from Reading University has told me that the current rate of decline in solar activity is such that there’s a real risk of seeing a return of such conditions.

I’ve been to see Professor Mike Lockwood to take a look at the work he has been conducting into the possible link between solar activity and climate patterns.

According to Professor Lockwood the late 20th century was a period when the sun was unusually active and a so called ‘grand maximum’ occurred around 1985.

Since then the sun has been getting quieter.

Slide from Shariv lecture

Slide from Shariv lecture

Prof. Nir J. Shaviv, who is a member of the Racah Institute of Physics in the Hebrew University of Jerusalem. According to PhysicaPlus: “…his research interests cover a wide range of topics in astrophysics, most are related to the application of fluid dynamics, radiation transfer or high energy physics to a wide range of objects – from stars and compact objects to galaxies and the early universe. His studies on the possible relationships between cosmic rays intensity and the Earth’s climate, and the Milky Way’s Spiral Arms and Ice Age Epochs on Earth were widely echoed in the scientific literature, as well as in the general press.” — From Nir’s blog [1]

Nir gave a lecture at EIKE (Europäisches Institut für Klima und Energie [2]) January 2013. In the lecture at EIKE he flows through some of what is wrong with IPCC assertions and models, then drops in extraterrestrial, solar wind, galactic cosmic rays, showing some neat plots. Asserts that solar accounts for a major proportion of whatever temperature change has gone on and how IPCC omit critical factors. Models are over-sensitive.



From the Talkshop’s favourite weatherman at the BBC Paul Hudson comes news of a possible run of colder weather and climate for the UK. This will be no surprise for talkshop regulars, where we have been predicting a solar slowdown for a few 11y cycles since the blog started in 2009. Nice to get some confirming support from Paul and good to see him sticking his neck out on a 20+ year weather prediction.

NASA last week confirmed their prediction that the current solar cycle 24 is likely to be the weakest since 1906.

Intriguingly, the current solar cycle shows a striking similarity with solar cycle 5 which was also very weak, with the same double peak as the current cycle, and ran from approximately the mid 1790s to around 1810.

Solar cycle 6 was weaker still and stretched from around 1810 to the early 1820s.

Solar cycles 5 and 6 were so unusual that they were named the Dalton solar minimum after meteorologist John Dalton and coincided with a period of increasingly cold winters and poor summers.


Review: Frozen Annals by Willi Dansgaard

Posted: June 24, 2013 by tchannon in books, climate, Ice ages

Willi Dansgaard with ice core

Greenland Ice Cap Research
Willi Dansgaard
124 pages

Dansgaard is the father of radioisotope ice history. This is his story from discovering about rain through to Vostok ice core.

Edited by The Department of Geophysics of
The Niels Bohr Institute for Astronomy, Physics and Geophysics at
The University of Copenhagen, Denmark.



Illustration from

Duncan Steel: Perihelion precession, polar ice and global warming (PDF).
Journal of Cosmology[1]

I’ve not had a chance to look at this item so I am linking as-is. I’m familiar enough with Berger to know this has real meat behind it. Errors would not surprise me but caveat emptor.