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By Jo Nova
It’s another outbreak of the Hottest-ever-Day Fever , where buses catch fire, and the worlds top journalists forget to ask anyone anything useful about the last 500 million years.
Sunday was the Worlds Hottest Day says the Guardian
The Copernicus data might be fine and dandy but it only goes back as far as 1979. The warm weather we are having now is just a welcome break in a cooling trend that started 7,000 years ago. It not only isn’t a record that means anything, it’s almost certainly a net benefit to warm blooded mammals.
The collective amnesia about the Holocene and most of the history of human civilization is complete. Apparently the world is in uncharted territory, except for thousands of rocks, stones, spears, shells, bits of wood, pollen, diatoms, fossilized plant leaves, and all the ice cores we’ve ever dug up. 4,000 stone-age spears and whatnot that melted out of the Norwegian glaciers in the last few years, must have frozen into them sometime in the last 5,000 years. And all the bones of dogs, rabbits, geese and frogs found inside the Arctic circle suggest our world is too brutally cold now. Likewise […]
Greenland by Johannes Plenio on Unsplash
By Jo Nova
We may be living through some of the best weather in the last 100,000 years
Kenneth Richard at NoTricksZone reports on a new paper showing the incredible extreme climate shifts of Greenland. During the depths of the last ice age Greenland temperatures would swing abruptly by 10 to 15 degrees Celsius (or 30F) in the space of 30 years. And we’re panicking at the moment about warming at 0.13°C per decade.
These Dansgaard–Oeschger (D–O) events occurred 24 times from 120,000 years ago until 11,000 years ago. There were no humans living there at the time, as far as we know. The best estimate is that people first arrived in Greenland 4,500 years ago. As far as we know, it’s only Greenland that was gyrating wildly in temperature but the bare truth about climate scientists is the expert models can’t predict or explain any of this. So the seismic shifts came and went and went and came, and it had nothing to do with whether you turned the airconditioner on.
If any poor sodding homo sapiens did manage to wash up on Greenland during the peaks 30 or 40,000 […]
By Jo Nova
This new study pokes holes in the dogma five different ways
Credit to Kenneth Richards who found the study and discussed it at NoTricksZone
Bones in a cave inside the Arctic circle show that the world was hotter, the climate is always changing, and life adapts very well.
A special cave in far northern Norway has a a trove of thousands of old bones. They are deposited in layers that stretch back from 5,800 years ago to 13,000 years ago. And it’s been a radical change: at the start, the cave was submerged under the ocean, so the bones are mostly marine species. But a few thousand years later the weather was warm, and birds and mammals had moved in. By 6,000 years ago the researchers estimate it was the hottest part of the Holocene and 1.5°–2.4°C warmer than the modern era of 1961–1990.
After that, the cave was blocked by scree, and the bone fragments sat there seemingly undisturbed for nearly 6,000 years while the ice sheets moved and the Vikings came and went and the world cooled. Then in 1993 someone happened to build a road nearby and found the cave. Now a team […]
Image by Hoeneisen from Pixabay
By Jo Nova
Perhaps Africa could use some global warming?
Thanks and credit to Kenneth Richard at NoTricksZone:
New Study Finds The Early-Mid Holocene Sahara Had Lakes With Depths Of ‘At Least 300 Meters’
During the hottest part of the Holocene, for thousands of years, there were deep lakes filled with water in the middle of the Sahara Desert. From 9,500 years ago to 6,000 years ago the monsoons rained on the Sahara, freshwater plankton frolicked in the lakes, and greenery grew far and wide. The wetter conditions made it possible for “widespread human occupation and the development of agriculture across North Africa”. Amazingly, that last quote comes from Kuper and Kropelin fully seventeen years ago. Strangely the UN experts don’t mention very often that in the warmer world not that long ago, the hyperarid Sahara desert was rich, green and filled with water? We wouldn’t want people to start wondering if climate change might mean Chad and Libya could be nicer places for Africans to live? Instead we’re told that global warming will turn into our whole world into the Saharan desert, only to find out that in a warmer world […]
We panic about the next half degree of warming (above the 1.5 we’ve already had) but the depth of the ice age was savagely cold. For years the experts told us what Earth’s temperature was then, but apparently they were wrong.
And yet corals and rainforest survived. Plus turtles, whales, kittens — lots of things. And all without research grants.
…
Nice line on the Nobel gas calibration with ground temperatures. Nice proxy.
Two studies have come out in the last 10 months both showing that at its coldest point about 25,000 years ago, the Earth was on average six degrees cooler Celcius than it is today. And this new study includes estimates of temperatures of tropical land near the oceans which ought to be more stable and less prone to big extremes.
This comes from a newer style of proxy based on noble gases dissolved in ground water. It appears to be quite an accurate proxy, judging by the graph to the right. And it solves a lot of problems with other proxies. We can take samples from all around the world instead of just the polar ice caps (like we can with ice cores). […]
The next ice coming to Europe might look something like the last ice age shown in this simulation. A time when Venice will be top of a long paddock that stretches to Albania.
In school children are taught to hyperventilate about the last 30m retreat of glaciers that never stayed put ever.
Instead, they could be studying this… (click to start)
At the 24,000 year BC point glaciers have wiped out Zurich, Bern, Geneva.
Image the effect on people if this were shown everytime a Swiss Alps disaster story was run?
OK, so it is a model
Advance and retreat of the Alpine glaciers during the last glacial cycle from Julien Seguinot on Vimeo.
About 25000 years ago, Alpine Glaciers filled most of the valleys and even extended onto the plains. Using a computer model that contains knowledge on glacier physics based on modern observations of Greenland and Antarctica and laboratory experiments on ice, help from traces left by glaciers on the landscape, and one of the fastest computers in the world, this animation is an attempt to reconstruct of the evolution of Alpine Glaciers in time from 120000 years ago to today.
Meanwhile, WWF […]
Don’t tell me that cold is nice and the climate was ever ideal
A few scientists thought that the climate was stable and well behaved during the Holocene until we invented coal power and the Ford Model T and everything fell apart “unprecedentedly”.
But 8200 years ago things apparently got pretty wild. See the GISP graph below where there was a three degree fall in temperatures suddenly (circled in red below). A new study found that at the same time China and California also cooled. Strangely, this cooling effect probably did not produce calm, happy days for the Californians at the time. Instead it looks like they got 150 years of intense winter storms and a lot of wet weather.
UPDATE: This graph shows the ice-core data up until 1855. The last 150 years (1705 to 1855) are highlighted in red to show the warming as the Earth began coming out of the LIA. Obviously that red line would continue up further if it was drawn to the present.
Looks like real climate change….
The reason for the sudden snap is possibly that a couple of massive glacial lakes in North East America collapsed and suddenly drained out […]
The Global Cooling Scare of the 1970s was real, there was a consensus, and it was all over the media. It flies in the face of the man-made warming campaign. After World War II there was a massive industrial escalation in the West. And just as coal fired power was going in everywhere, the world damnwell cooled by -0.3°C. It’s obvious that the modern Climate Witches don’t want people bringing this up.
…
Where’s that cooling gone? The modern NASA GISS dataset adjusted it away:
What happened to 40 years of cooling from WWII onewards?
That’s the magic of homogenisation.
In 2008, Peterson, Connolley, and Fleck published “The Myth of the 1970s Global Cooling Scientific Consensus” . The Myth paper “found” that from 1965 through 1979, there were only 7 cooling, 20 neutral, and 44 warming papers. It was published in Bulletin of the American Meteorological Society (AMS), showing how pathetically weak the caliber of review is there. Kenneth Richard searched, found and documents 220 papers, not 7 in the same period. He estimates there are probably many more.
The Connolley there is none other than the William Connolly who abused Wikipedia’s editing rules — barred 2,000 other […]
Fossils show those dang mammals lived in all the spots they weren’t supposed to live in. Climate models don’t predict the climate, and animal distribution models don’t predict (or in this case hindcast) animal distribution either. How little we know, and how adaptable is biology?
This calls into question all the headline prophecies about the extinction of cute furry critters due to climate change.
The modelers were sure that animals would be unable to cope with temperature changes and would not have lived in the same places as they do now during a climate so different. By crikey, it was an ice age! Yet those small mammals, whose defining biology is that regulate their own temperature, flummoxed the models by living nearer the glacier sheets where the models predicted they would not live.
All the alarming forecasts of local extinctions of mammals come from assumptions built into modern models that fail in multiple ways. The temperature changes from the last 20,000 years show that these mammals have already survived massive shifts, both colder and warmer, and that anything we face in the next century is but a flea on a hippo.
In the graph, the dots are the fossils, the […]
The message to the world is unequivocal:
“We are heading for somewhere that is far off from anything we have seen in the past 10,000 years – it’s through the roof. In my mind, we are heading for a different planet to the one that we have been used to,” said Jeremy Shakun of Harvard University, a co-author of the study.
Source: The-world-is-hottest-it-has-been-since-the-end-of-the-ice-age–and-the-temperatures-still-rising.
There are two factors in the new Marcott paper that are major red flags. For one, there is hardly any data in the modern end of the graph. Ponder how researchers can find 5,000 year old Foraminifera deposits, but not ones from 1940? Two: they’ve smoothed the heck out of longer periods. Marcott et al clearly say there is “…essentially no variability preserved at periods shorter than 300 years…” So if there were, say, occurrences of a warming rise exactly like the last century, this graph won’t show them.
Some of the data has a resolution as poor as “500 years” and the median is 120 years. If current temperatures were averaged over 120 years (that would be 1890 to now), the last alarming spike would blend right in with the other data. Where would the average […]
There have been suggestions that Jo Nova might be trying to hide or ignore the most recent boreholes graph from Huang et al. So here it is. This is the last 2,000 years according to 6000 boreholes, with the last 100 years also using the “instrumental record” which gives us that hockey-stick uptick at the end. Below I explain the pros and cons of this study and update my thoughts.
Huang and Pollack 2008: Their latest boreholes published study
A borehole sounds like a bit-of-a-stretch as a proxy. How could we tell if the world was warmer in 1066 by drilling a hole in the ground? Yes, fair point. But what makes boreholes useful is that they are global and there is a lot of data: specifically 6,000 holes all over the world.
I’ve been looking at boreholes in more detail, analyzing them in the light of newer proxies. When all the evidence is considered, boreholes turn out be not-much-use at giving us meaningful numbers in degrees C, and in my opinion, not-too-hot at telling us the “when” of an event either. Too much depends on assumptions.
But what are they good for is that, when combined with […]
Greenland Interglacial Temperatures – last 10,000 years. Are we headed for an ice age? (See below for more detail.)
David Lappi is a geologist from Alaska who has sent in a set of beautiful graphs–including an especially prosaic one of the last 10,000 years in Greenland–that he put together himself (and which I’ve copied here at the top).
If you wonder where today’s temperature fits in with the grand scheme of time on Earth since the dinosaurs were wiped out, here’s the history. We start with the whole 65 million years, then zoom in, and zoom in again to the last 12,000 from both ends of the world. What’s obvious is that in terms of homo sapiens history, things are warm now (because we’re not in an ice age). But, in terms of homo sapiens civilization, things are cooler than usual, and appear to be cooling.
Then again, since T-rex & Co. vanished, it’s been one long slide down the thermometer, and our current “record heatwave” is far cooler than normal. The dinosaurs would have scoffed at us: “What? You think this is warm?”
With so much volatility in the graphs, anyone could play “pick a trend” and depending […]
Ice cores reveal that CO2 levels rise and fall hundreds of years after temperatures change
In 1985, ice cores extracted from Greenland revealed temperatures and CO2 levels going back 150,000 years. Temperature and CO2 seemed locked together. It was a turning point—the “greenhouse effect” captured attention. But, in 1999 it became clear that carbon dioxide rose and fell after temperatures did. By 2003, we had better data showing the lag was 800 ± 200 years. CO2 was in the back seat.
8 out of 10 based on 25 ratings […]
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JoNova A science presenter, writer, speaker & former TV host; author of The Skeptic's Handbook (over 200,000 copies distributed & available in 15 languages).
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