Once again, climate scientists use a single tree to define global change

From Keele University and the “It’s like deja vu all over again”  department with the leader of the “ship of fools” thrown in for comic relief. Long-time WUWT readers surely remember the single “Most influential tree in the world” from the Yamal fiasco, where the “signal” in one tree (YAD06) biased an entire paper with a hockey stick shape, making it worthless. Well, here we are again with another single tree used to define the entire globe. Obviously they’ve learned nothing, then again, it’s Chris Turney.

Loneliest tree in the world marks new age for our planet

An international research team, including Professor Christopher Fogwill from Keele University, has pinpointed a new geological age, the Anthropocene.

When humans first set foot on the moon in 1969, the people of that decade thought the world had changed forever. Little did they know the world had already laid down the precise marker of a far greater global change four years earlier, signalling our planet had entered an entirely new geological epoch, a time period defined by evidence in rock layers, the Anthropocene.

That new epoch began between October and December 1965 according to new research published today in Scientific Reports by members of the Australasian Antarctic Expedition 2013-2014, which was co-led by co-author Professor Christopher Fogwill from Keele University.

The researchers were able to mark this profound change so precisely because of a “golden spike” found in the heartwood of a strange and singular tree, a Sitka Spruce found on Campbell Island, a World Heritage site in the middle of the Southern Ocean The spruce is locally referred to as ‘the loneliest tree in the world’ with the next closest tree over 200km away on the Auckland Islands.

The isolated Sitka spruce on the South Ocean’s Campbell Island is considered the “loneliest tree in the world.” Photo by Chris S. M. Turney, et al./Scientific Reports

The radioactive carbon spike was created by the culmination of mostly Northern Hemisphere atmospheric thermonuclear bomb tests in the 1950s and 1960s. The signal was fixed in the wood of the Campbell Island Sitka spruce by photosynthesis.

Professor Fogwill, Head of the School of Geography, Geology and the Environment at Keele University, said:

“The impact that humanity’s nuclear weapons testing has had on the Earth’s atmosphere provides a global signal that unambiguously demonstrates that humans have become the major agent of change on the planet. This is an important, yet worrying finding. The global atomic bomb signal, captured in the annual rings of this invasive tree species, represents a line in the sand, after which our collective actions have stamped an indelible mark, which will define this new geological epoch for generations to come.”

Various researchers from around the world have been talking about declaring a new geological epoch called the Anthropocene, indicating the point where human influence on the planet fundamentally changed the natural world. However, for a new epoch to be officially declared there must be a clear and precise “global” signal that can be detected in the geological forming materials of the future. This radiocarbon spike is that signal.

Lead author Professor Chris Turney, from University of New South Wales, said:

“We were incredibly excited to find this signal in the Southern Hemisphere on a remote island, because for the first time it gave us a well defined global signature for a new geological epoch that could be preserved in the geological record. Thousands of years from now this golden spike should still stand as a detectable marker for the transformation of the Earth by humankind.”

In the Northern Hemisphere, the atmospheric radiocarbon peak occurred in 1964 where the signal is preserved in European trees. That same peak took until late 1965 to reach the Southern Hemisphere atmosphere. With that, the signal became global, precise and detectable in the geological record, meaning it fitted the requirements as a marker for a new epoch.

Levels of radiocarbon recorded on Campbell Island peaked in late 1965. Image: Turney et al

The 100-year-old tree itself is an anomaly in the Southern Ocean. It is naturally found along the North American Pacific Coast but it is credited with being planted on Campbell Island by the Governor of New Zealand in 1901. The oceanic climate has had an unusual effect on the spruce. Although it has grown to 10m tall, the tree has never produced cones, suggesting it has remained in a permanently juvenile state.

If traces of nuclear testing were present even on Campbell Island then the bombs must have had a truly global impact. Image: Turney et al.

Co-author Professor Mark Maslin, from University College London, said:

“It seems somehow apt that this extraordinary tree, planted far from its normal habitat by humans has also become a marker for the changes we have made to the planet, it is yet further evidence, if that was needed, that in this new epoch no part of our planet remains untouched by humans.”

The study:

Global Peak in Atmospheric Radiocarbon Provides a Potential Definition for the Onset of the Anthropocene Epoch in 1965

Abstract

Anthropogenic activity is now recognised as having profoundly and permanently altered the Earth system, suggesting we have entered a human-dominated geological epoch, the ‘Anthropocene’. To formally define the onset of the Anthropocene, a synchronous global signature within geological-forming materials is required. Here we report a series of precisely-dated tree-ring records from Campbell Island (Southern Ocean) that capture peak atmospheric radiocarbon (14C) resulting from Northern Hemisphere-dominated thermonuclear bomb tests during the 1950s and 1960s. The only alien tree on the island, a Sitka spruce (Picea sitchensis), allows us to seasonally-resolve Southern Hemisphere atmospheric 14C, demonstrating the ‘bomb peak’ in this remote and pristine location occurred in the last-quarter of 1965 (October-December), coincident with the broader changes associated with the post-World War II ‘Great Acceleration’ in industrial capacity and consumption. Our findings provide a precisely-resolved potential Global Stratotype Section and Point (GSSP) or ‘golden spike’, marking the onset of the Anthropocene Epoch.

Open access here: https://www.nature.com/articles/s41598-018-20970-5

 

 


So who says 1965 is the beginning of a new Epoch? There’s no consensus, and they can’t even decide if that’s the name. From Wikipedia’s definition of the Anthropocene:

As of August 2016, neither the International Commission on Stratigraphy nor the International Union of Geological Sciences has yet officially approved the term as a recognized subdivision of geological time,[3][5][6] although the Working Group on the Anthropocene (WGA) voted to formally designate the epoch Anthropocene and presented the recommendation to the International Geological Congress on 29 August 2016.

In January 2015, 26 of the 38 members of the International Anthropocene Working Group published a paper suggesting the Trinity test on 16 July 1945 as the starting point of the proposed new epoch.[20] However, a significant minority supports one of several alternative dates.[20] A March 2015 report suggested either 1610 or 1964 as the beginning of Anthropocene.[21] Other scholars point to the diachronous character of the physical strata of the Anthropocene, arguing that onset and impact are spread out over time, not reducible to a single instant or date of start.[22]

A January 2016 report on the climatic, biological, and geochemical signatures of human activity in sediments and ice cores suggested the era since the mid-20th century should be recognised as a distinct geological epoch from the Holocene.[23]

Turney is just looking to get his name listed as the identifier of the Anthropocene, nothing more. Fortunately, it won’t be decided by him.

The study is nothing but a headline grabber posing as science, just like Chris Turney’s original “Spirit of Mawson” aka “ship of fools” fiasco.

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Sweet Old Bob
February 19, 2018 10:36 am

Humans altered the earth when they started to use fire ……

Reply to  Sweet Old Bob
February 19, 2018 11:02 am

Bob, we also altered the Earth, when we cut down forests and dug up grasslands to plant crops, when we dammed and diverted rivers to use the water, when we built cities, roads, extracted coal, minerals by mining, the Seven Ancient Wonders of the World, we have even managed in a small way, to change the Moon and most of the planets by either sending men there and/or space probes. These are real world-changing events and have been going on for 1000’s of years. The pathos of a sterile, lonely Spruce is not really inspirational in comparison.
I strongly suggest that this team of people find a darkened room, lie down in it and to listen to two people who have more scientific knowledge than all of them put together. I am of course referring to Laurel & Hardy singing “The Trail of the Lonesome Pine”.

Alan Tomalty
Reply to  andrewmharding
February 19, 2018 11:26 am

No matter what humans have done to the planet. It aint going anywhere and it will survive . Listen to George Carlin
https://www.google.ca/search?q=george+carlin+the+planet+isn%27t+going+anywhere&oq=George+Carlin+the+planet&aqs=chrome.1.69i57j0l5.18235j0j8&sourceid=chrome&ie=UTF-8
The real problem is will humans survive because of pollution. 1 example being that the worlds oceans are now a plastic garbage dump. The Greenies should protest over pollution NOT CO2 which is a fictitious problem.

Jon
Reply to  andrewmharding
February 19, 2018 11:28 am

“Humans altered the Earth when we …”
And when we fart. Like cows! Perhaps thr new epoch should be called the Bovinocene?
Or perhaps Bullshitocene?

Dan Davis
Reply to  andrewmharding
February 19, 2018 12:17 pm

For these guys – it’s the EGOcene….

MarkW
Reply to  andrewmharding
February 19, 2018 12:26 pm

The oceans being polluted by plastic is another of the great eco-myths.

Joel Snider
Reply to  andrewmharding
February 19, 2018 12:49 pm

Yep. Living in an environment affects it.
Ask any beaver.

Komrade Kuma
Reply to  andrewmharding
February 19, 2018 1:07 pm

The true explanation of what this nonsense derives from is in the statement about the tree that “it has remained in a permanently juvenile state.”. Apply that to Chris Turney and co and its QED.
Sad, sad, sad little dribbledicks who wannabe recognised as adults.

John M. Ware
Reply to  andrewmharding
February 19, 2018 4:38 pm

Speak to me of the term “sterile.” I am used to thinking of it as meaning “no life,” as a sterile surgical instrument, or the surface of the moon. The spruce tree is not sterile; it has lots of life. What it is also, is “infertile,” not bearing young. If my understanding of the term is faulty, please enlighten me–I’d appreciate it.

J.H.
Reply to  andrewmharding
February 19, 2018 5:58 pm

…. and it all happened because of the Holocene Warming…. Without that Warming Human society this last 10 000 years, would still be hunter gathering with scattered tribal clan groups, unchanged and unchanging as the last 100 000 years previous.
Warming is Good for Human society and civilization.

Reply to  andrewmharding
February 20, 2018 9:34 am

It’s sterile because the poor thing is alone (assuming it can’t self-fertilize).

ricksanchez769
Reply to  Sweet Old Bob
February 19, 2018 11:21 am

Amen, and I altered it last night beside my roaring fire and my 3 fingers of scotch. FFS what would these alarmist doofuses have us do on this beautiful green Earth? Stare into each others eyes and eat berries and grass all day

Karlos51
Reply to  ricksanchez769
February 19, 2018 12:08 pm

they could follow the example of Jains who already have a philosophy on that.. it’s a rather good one too in that it has dualism as it’s core value so it is acceptable to not be a Jain or follow any particular path.. that is to say there’s no rigid pious tenants to follow, and they’re godless too!
I was thinking of my wife’s grandmother the other day and the classic joke about Jains came up ‘what do Jaina eat?’ everyone falls about laughing … boom tish. Fact was, she ate nothing from the ground for breaking the ground you may take the life of a worm. She wore no shoes to avoid crushing bugs, she swept the path before her with a fine broom when she walked. She ate no meat, no grain (seeds may give life to a plant) – basically she grazed leaves.
that’s putting your money where your mouth is! If greens were genuinely concerned about leaving no footprints then they’ve Jaina as guides ready to go.

old construction worker
Reply to  ricksanchez769
February 19, 2018 6:39 pm

‘leaving no footprints then they’ve Jaina as guides ready to go.’ I know what they can do for if they went to lower earth’s human population, but they won’t do that either. Now that’s putting money where your mouth is.

Reply to  Sweet Old Bob
February 19, 2018 11:36 am

Before onset of the Anthropocene being dim-witted was easy, but in this new epoch promoting stupidity can be very profitable, result: exponential rise in competitiveness among the brainless.

gnomish
Reply to  vukcevic
February 19, 2018 2:56 pm

it’s loot, not profit – othewise, you nailed it.
but some folks still think there’s a debate or that the predatory brainless actually believe anything they say…lol
it’s nature’s way that the prey don’t outsmart the predator very often.

ZThomm
Reply to  Sweet Old Bob
February 19, 2018 12:49 pm

Surely there is additional evidence of atmospheric testing somewhere, ice caps maybe?

TC in the OC
Reply to  Sweet Old Bob
February 19, 2018 1:13 pm

Ummm…every living organism has altered the earth.

higley7
Reply to  Sweet Old Bob
February 19, 2018 4:56 pm

So what if you can see a signal from our atmospheric nuclear testing? It had not real or detectable effect on the planet, so what’s the deal? YAWN. These people are really trying to make a big hitng out of a dust mote.

AWG
Reply to  Sweet Old Bob
February 19, 2018 7:32 pm

Ancient Hebrew texts along with calculations by Bishop Ussher would clearly say the Anthropocene Age began in 4004BC 😉

massieguy
Reply to  AWG
February 19, 2018 8:04 pm

At 3:46 pm EST

Crispin in Waterloo
Reply to  AWG
February 20, 2018 3:42 am

Don’t forget the runes! Some might be dated to 4005 BC.

Gary
February 19, 2018 10:38 am

It is naturally found along the North American Pacific Coast but it is credited with being planted on Campbell Island by the Governor of New Zealand in 1901.
Invasive species.

Richard of NZ
Reply to  Gary
February 19, 2018 10:43 am

Agreed. It should be cut down to preserve the native ecosystem it its entirety.

Phillip Bratby
Reply to  Richard of NZ
February 19, 2018 11:10 am

And removed and burnt so that it doesn’t become a geological feature.

Reply to  Richard of NZ
February 19, 2018 11:31 am

But not burnt, as Phillip suggests, because that would generate the pernicious pollutant, CO2. Unless it is pelletized and burnt in EU, then it’s Ok.

ZThomm
Reply to  Richard of NZ
February 19, 2018 12:52 pm

It could be used as the farthest South Christmas Tree, lit up to guide ships of fools.

Reply to  Gary
February 19, 2018 11:48 am

To his credit, Prof Fogwell does call this an invasive species.

Mike McMillan
Reply to  Joel O’Bryan
February 19, 2018 2:08 pm

A one tree invasion. Where are the greenies who chopped down Dr Axel Mörner’s tree in the Maldives when you need them?

NorwegianSceptic
Reply to  Joel O’Bryan
February 20, 2018 3:23 am

Prof Fogwell is an invasive species….

Crispin in Waterloo
Reply to  Joel O’Bryan
February 20, 2018 3:47 am

Invasive species? It is not. It is exotic. It apparently can’t invade the hectare it sits upon.
For guidance one can look at the rampage South Africa went on to classify what plants one may keep in a garden, on a farm, and free ranging. Not everything exotic is invasive. Clearly this firry little creature is not invading anything.

MarkW
Reply to  Gary
February 19, 2018 4:59 pm

Pretty much every plant, everywhere, was an invasive species at some time.
Animals too.

Curious George
February 19, 2018 10:42 am

Professor Chris Turney is a gift that just keeps giving. The ship of fools. A “precise” definition of Anthropocene. May I suggest to make the origin absolutely precise by taking the middle of the interval that Professor Turney modestly suggests. We should be grateful to Sitka spruces by supplying us with monthly tree rings.
Anthropocene started Monday, November 15, 1965, at 01:00 UT.

R. Shearer
Reply to  Curious George
February 19, 2018 11:21 am

That ship of fools helped mark the idiotcene.

Reply to  R. Shearer
February 19, 2018 11:29 am

and Admiral Al Gore is the Brevit-Admiral in Charge of a naval flotilla’s worth of Ships of Climate Fools.

Auto
Reply to  R. Shearer
February 19, 2018 3:16 pm

Or – the Adjustocene??
Auto

noaaprogrammer
Reply to  R. Shearer
February 19, 2018 10:01 pm

…just obscene…

fos
Reply to  Curious George
February 19, 2018 11:33 am

Turney is an unpleasant piece of work who will do anything to get himself some publicity. In recent years he has been noisily blaming Lieutenant Edward ‘Teddy’ Evans, second-in-command on Captain Robert Scott’s disastrous Terra Nova expedition to the South Pole in 1911/12 for sabotaging Scott’s journey.
His arguments for this are just smears of a dead man who cannot defend himself designed to get as much attention as possible:
http://figures-of-speech.com/2017/11/evans.htm

RWturner
February 19, 2018 10:46 am

I must have missed the ‘radioactive isotope spike inside heart wood’ rule in stratigraphic nomenclature for naming new stratigraphic units and geologic ages. According to this train of sophistry, any major volcano eruption that left an isotope signature throughout global strata would constitute a new geologic age.

RWturner
Reply to  RWturner
February 19, 2018 10:54 am

The Anthropocene isn’t close to being a formally recognized age with any proper stratigrapher or geologist. This is more political science than true science.
“The proposal of a new formal stratigraphic unit requires a statement of intent to introduce the new unit and the reasons for the action. A new unit must be duly proposed and duly described. This includes:
A clear and complete definition, characterization, and description of the unit so that any subsequent investigator can identify it.
The proposal of the kind, name, and rank of the unit.
The designation of a stratotype (type section) or type locality on which the unit is based and which may be used by interested scientists as a reference.
Publication in a recognized scientific medium.”
http://www.stratigraphy.org/upload/bak/defs.htm
How do you have a clear and complete definition of a unit that doesn’t even exist yet? There are very few rocks younger than 10,000 years, let alone rocks as young as the dates proposed. Then how do other investigators recognize something that’s not there, has no type locality, and it’s purported identifying attribute is isotope signatures within things that aren’t rocks at all? I think they should stick to activism and leave the science alone.

Jon
Reply to  RWturner
February 19, 2018 11:32 am

Quite so these morons don’t even know the dofference between Geology and Biology.

Jon
Reply to  RWturner
February 19, 2018 11:33 am

Quite so these morons don’t even know the difference between Geology and Biology.

Roger Graves
Reply to  RWturner
February 19, 2018 1:19 pm

The anthropocene is obviously defined as the era in which anthracite was first used.

Brian R
Reply to  RWturner
February 19, 2018 8:29 pm

“The Anthropocene” is clearly the era when humanity became mistakenly convinced of its own importance in the world it inhabited.

jon
Reply to  Brian R
February 20, 2018 12:14 am

the Egoscene?

mikewaite
Reply to  RWturner
February 20, 2018 12:51 am

I have already incorporated Anthropocene into my mental history of the world , and in fact gone further than Turney in dividing it into , so far , 2 epochs:
ANGLOCENE: from the start of the Industrial revolution, ca 1700 CE in Britain and its dominions , and then the USA , to 2000 CE.
SINOCENE: From 2000 CE when China began to dominate global emissions , manufacturing and politics generally.

Man Bear Pig
Reply to  RWturner
February 20, 2018 8:13 am

The alarmoscene or shortened version lol-oscene

Anonymoose
Reply to  RWturner
February 21, 2018 10:31 am

Roger Graves February 19, 2018 at 1:19 pm
The anthropocene is obviously defined as the era in which anthracite was first used.
And its geologic marker is the missing coal deposits.

Jon
Reply to  Anonymoose
February 21, 2018 12:54 pm

Surely its marker is the missing gold deposits around the world that marked the onset of citification? Without surplus wealth human society and industry would never have grown enough to threaten the entire planet.

Ian Magness
Reply to  RWturner
February 19, 2018 10:57 am

Absolutely correct RW – thanks for pointing this out. And don’t forget Hiroshima and similar – a new age every few years, apparently.
This whole episode is so pathetic it’s depressing. Can they not see themselves in the mirror and realise how stupid they look?

jorgekafkazar
Reply to  RWturner
February 19, 2018 11:24 am

Precisely. Pseudoscientists could just as logically cite the thickness of gum under theatre seats or on the sidewalk over much of the earth as the start of some imaginary “Wrigleycene” Age.

eric
February 19, 2018 10:48 am

The name “fogwill” seems appropriate!

Ian Magness
Reply to  eric
February 19, 2018 10:59 am

F***wit is nearer the mark. Christian name – Complete.

Phillip Bratby
Reply to  Ian Magness
February 19, 2018 11:12 am

You would think these “scientists” might find something useful to do with their time and taxpayers’ money.

February 19, 2018 10:53 am

“One Tree-ring to rule them all”.
I thought Mann had the copyright on that.
Will he sue Turney?

michael hart
Reply to  Gunga Din
February 19, 2018 6:03 pm

Winner.

Hugs
February 19, 2018 10:59 am

The anthropocene is, defined in a single word, premature. Gary Larson could have drawn some cavepeople killing a mastodon, with nerds, jerks and an angry crowd with placards insisting that the pleistocene was better because the continental ice was wider.

Rick K
February 19, 2018 11:00 am

The radioactive isotope spike in the tree wouldn’t be there if the tree wasn’t there.
Obviously, this isn’t the Anthropocene… it’s the Sprucecene. Get it right.

ScienceABC123
February 19, 2018 11:03 am

Can you say “cherry picking” your data?

StandupPhilosopher
Reply to  ScienceABC123
February 19, 2018 11:25 am

More like sprucing it up a bit

JRF in Pensacola
February 19, 2018 11:11 am

Read the paper and, as a biologist, I get nervous when people use tree rings to “prove’ anything other than the age of the specimen. Not that useful information can’t come from further analyses on the rings, but implying world-wide effects because of those analyses requires a healthy dose of restraint (and a lot of sampling!). Yamal is a prime example.
However, I will say that the overall methodology used by the authors is acceptable for Campbell Island. They did sample thirty Dracophyllum spp. specimens, compared that data to the lone Sitka Spruce and sampled several peat locations to arrive at their conclusions. But to extrapolate that information to include the whole planet is a reach (to put it mildly). Plus, I get even more nervous when I see the words “potential” and “proxy’ in the same sentence.
So, I applaud anyone who presents an hypothesis, designs an experiment, produces data and presents an analysis but I need to see a lot more before I can agree with the conclusions in this paper. (Considering Yamal, I would be curious to know what the peer reviewers had to say.)

Reply to  JRF in Pensacola
February 19, 2018 11:48 am

(Considering Yamal, I would be curious to know what the peer reviewers had to say.)

The pal-reviewers were all for it…back then. The non-pal-reviewers tore the hockey stick apart…back then and now.

JRF in Pensacola
Reply to  Gunga Din
February 19, 2018 10:14 pm

Very true! And I wonder, based on that Yamal experience, what the reviewers of this paper had to say. I’m sure many have experienced the peer review process and shook their heads in amazement. Decades ago, I co-wrote a chapter in a monograph on the biology of a large river in the US and peer review of the chapter garnered the most favorable comments about the summary. The editors, however, decided to cut the summary of the chapter because no other chapter had such a summary. So, I suggested add summaries to the end of the other chapters (which is what should have been done). Answer: No. Ok, incorporate the Summary into the Discussion section within the chapter? Answer: No. Go figure.

knr
February 19, 2018 11:14 am

culmination of mostly Northern Hemisphere atmospheric thermonuclear bomb tests in the 1950s and 1960s.
Really I suggest the authors find just consider
British nuclear tests at Maralinga occurred between 1956 and 1963 at the Maralinga site, part of the Woomera Prohibited Area in South Australia and about 800 kilometres north-west of Adel
French nuclear tests in the South Pacific in the 1960s and 1970s were far more toxic than has been previously acknowledged and hit a vast swath of Polynesia with radioactive fallout, according to newly declassified ministry of defence documents which have angered veterans and civilians’ groups.
The Marshall Islands are marking 60 years since the devastating US hydrogen bomb test at Bikini Atoll, .
Now I wonder why these far more local tests had no effect but the ones fin the Northern Hemisphere did ?

tty
Reply to  knr
February 19, 2018 12:15 pm

They were all much smaller than the russian test series on Novaya Zemlya in the early sixties, the fallout from those completely dominates the record, hence the mid-sixties peak. You mustn’t believe the PC fairytales.

Old44
Reply to  knr
February 19, 2018 7:53 pm

Didn’t fit the theory.

Reply to  knr
February 20, 2018 9:47 pm

Excellent question knr!
Just the Bikini tests alone, before taking into account British and French atomic tests:

“The nuclear testing at Bikini Atoll program was a series of 23 nuclear devices detonated by the United States between 1946 and 1958 at seven test sites on the reef itself, on the sea, in the air and underwater”

All provide the necessary requirements to meet Turney’s fools quest for a global marker.
It has nothing to do with an alleged maximum marker. The claim they seek is a global marker; and that is/was easily provided by nuclear explosions along, North and South of the equator.
Trees around the world will highlight a different maximum point; in that their individual maximums are locally dependent.
Once again, it appears Turney found what he wanted to find, not a clear boundary marker.
It would not be surprising if Turney caused that anomalous Sitka spruce severe damage with his drill. 10m is a small Sitka spruce for 100 years.

Walter Sobchak
February 19, 2018 11:15 am

The One Tree is a fantasy novel. It is not science:
https://en.wikipedia.org/wiki/The_One_Tree

Reply to  Walter Sobchak
February 19, 2018 11:50 am

But didn’t Thor save it in one of those Marvel movies?

Walter Sobchak
Reply to  Gunga Din
February 19, 2018 5:31 pm

I love the Thor movies, but they arel not science.

February 19, 2018 11:16 am

Carbon-14 has a half-life of 5,730±40 years. So within 20 half-lifes the amount of C-14 will be 2^-20 ~ 1E-06, or one one-millionth of current concentrations, far, far below any conceivable ability to recover the bomb signal from the continual background production of cosmogenic-produced C-14.
And that is in 114,600 years, or the time between current glacial cycles due to Malinkovitch orbital cycling.
So by the end of the next glacial cycle, in that interglacial period when life can flourish again, whoever might be here will not be able to detect that C-14 bomb signal. And even if some amazing tech is available to find it, the temporal resolution will be quite low.
As an aside, those future Earthlings be able to find a plutonium signal at various places in the world though from 20th century bomb production. But that is not what this research paper by Turney studies.

tty
Reply to  Joel O’Bryan
February 19, 2018 11:52 am

Yes, the “plutonium horizon” in lake deposits in the Chelyabinsk area might be a useful stratotype. Possibly there is a detectable horizon in maritime sediments off the Columbia river mouth from Hanford too.
And the data from the “natural reactor” at Oklo shows that the stable breakdown products from the plutonium stay put in the ground and are detectable even after 1.7 billion years.

diogenese2
Reply to  Joel O’Bryan
February 19, 2018 12:03 pm

Joel, as you put it, by this time humanity will either be extinct, or have evolved technology to do precisely what you require. Looking back just 30 years I can see that nobody can predict anything much that far. As for 60 years, forget it – No idea at all.

tty
February 19, 2018 11:39 am

As a matter of fact this ”GSSP” (Global Boundary Stratotype Section and Point) is about as unsuitable as it could be.
For example a GSSP is required to be permanently accessible to researchers, large enough for repeated sampling and freely accessible.
A single tree (that will soon be gone) on a distant subantarctic island, which requires a chartered ship to reach and a special permission to even land on the island, much less take samples from it is of course utterly unsuitable.
If for some reason subantarctic trees are so special in this regard (which is odd since a GSSP is supposed to be globally applicable), why not use a rata tree (Metrosideros) from the forest on the Auckland Islands 300 kilometers away, or a southern beech (Nothofagus) from the forests of Tierra del Fuego, which actually grow well south of that Sitka Spruce on Campbell (55 degrees south as against 52.5)? These are part of the natural vegetation, allow multiple sampling and will be available for the foreseeable future.
Answer:
That Spruce is famous and iconic. Every tourist cruise to Campbell Island (not that there are very many) includes a visit to THE TREE (there is only one), and everybody snaps a photo of it (I’ve got one myself). It easily beats even a visit to the albatross breeding colony, which is actually a lot more interesting but requires a rather strenuous uphill hike. That tree on the other hand is just a few meters from the sea.
And I’m willing to bet that they did not go many meters beyond it. The scrub that is visible on the slopes behind the tree is almost impenetrable.

Reply to  tty
February 19, 2018 11:56 am

UH OH!
Rising sea levels might destroy the magic tree?
We must all start burning wood pellets instead of coal to keep it safe!
(now where did I put that sarc tag….)

tty
Reply to  Gunga Din
February 19, 2018 12:10 pm

You are right, I didn’t think of that. A sea-level rise of even a few feet will probably kill that tree considering where it is growing.
By the way You can actually see the Magic Tree on Google Maps/Google Earth at 52.554317 South, 169.133381 East.

haverwilde
February 19, 2018 11:39 am

A Sitka Spruce, 117 years old, and only 35 feet tall? Good grief, what a poor example of the species. I have one in my backyard about that age and it is three times as tall and over 6 feet in diameter at the base. I think someone just planted a mutant. Cut the thing down.

dp
Reply to  haverwilde
February 20, 2018 7:45 pm

It’s pining for something – or sprucing, maybe. Probably climate and soil it is genetically designed to expect.

David Hoopman
February 19, 2018 11:41 am

Speaking of remaining in “a permanently juvenile state…”

tty
Reply to  David Hoopman
February 19, 2018 12:02 pm

Summers are very cold and wet on Campbell Island. The tree grows very slowly and doesn’t produce any cones. Average temperature of the warmest month is only 49 F, which is actually slightly below what is usually regarded as the limit for tree vegetation (10 C = 50 F). On Auckland Islands 180 miles to the northwest where there are natural forests MTWM (Mean Temperature Warmest Month) is 52 F.

David Long
February 19, 2018 11:50 am

Geologic periods are defined by changes in the rocks. Trees don’t qualify.

Reply to  David Long
February 19, 2018 11:59 am

“Climate Science” has been petrified into reaching only one conclusion.

daveandrews723
February 19, 2018 11:57 am

I’m not a scientist but even I know that purporting to tell the past temperature record of the earth from a few tree ring samples is just plain goofy.

Jamie
February 19, 2018 12:00 pm

i like the 1965 date….because that means I lived in two epochs…..1945 doesn’t work for me that way….

Mickey Reno
Reply to  Jamie
February 19, 2018 3:59 pm

Two? You’ve lived in FOUR different eras, the Holocene, the Anthrocene, the Adjustocene, and now, the Russian Collude-O-cene (which will be the longest one, apparently).

John F. Hultquist
February 19, 2018 12:12 pm

Others have commented on the content, so I won’t.
By the time one is bestowed with advanced academic degrees any ability at wordsmithing has been knocked out of said parson.
From Professor Fogwill:
… unambiguously demonstrates;
… a line in the sand;
… stamped an indelible mark;
… for generations to come
Someone send this man a copy of Elements of Style, by Strunk and White.

eyesonu
February 19, 2018 12:16 pm

“This is going to cause more confusion than a mouse in a burlesque show”
http://foghornleghornquotes.com/wp-content/uploads/Foghorn-on-the-Farm-300×225.jpg

Bruce Cobb
February 19, 2018 12:20 pm

I hereby dub the latest epoch “The Ridiculocene”.

Lars P.
February 19, 2018 12:28 pm
Reply to  Lars P.
February 19, 2018 1:08 pm

How about the “Abuchabullocene”?

February 19, 2018 12:31 pm

I thought you were referring to this famous tree on the Maldives. Can’t seem to find the link to this paper/article – by Dr. Nils-Axel Mörner (sea level data expert):
“A famous tree in the Maldives shows no evidence of having been swept away by rising sea levels, as would be predicted by the global warming swindlers. A group of Australian global-warming advocates came along and pulled the tree down, destroying the evidence that their “theory” was false.”

Reply to  J Philip Peterson
February 19, 2018 12:46 pm

This is the only link I could find, a PDF from June 22, 2007:
http://www.climatechangefacts.info/ClimateChangeDocuments/NilsAxelMornerinterview.pdf
Mörner:
“…This tree, which I showed in the documentary, is interesting. This is a prison island, and when people left the island, from the ’50s, it was a marker for them, when they saw this tree alone out there, they said, “Ah, freedom!” They were allowed back. And there have been writings and talks about this. I knew that this tree was in that terrible position already in the 1950s. So the slightest rise and it would have been gone. I used it in my writings and for television. You know what happened? There came an Australian sea-level team, which was for the IPCC and against me. Then the students pulled Courtesy of Nils-Axel Mörner A famous tree in the Maldives shows no evidence of having been swept away by rising sea levels, as would be predicted by the global warming swindlers. A group of Australian global-warming advocates came along and pulled the tree down, destroying the evidence that their “theory” was false. June 22, 2007  Economics EIR 36 down the tree by hand! They destroyed the evidence. What kind of people are those? And we came to launch this film, “Doomsday Called Off,” right after, and the tree was still green. And I heard from the locals that they had seen the people who had pulled it down. So I put it up again, by hand, and made my TV program. I haven’t told anybody else, but this was the story. They call themselves scientists, and they’re destroying evidence! A scientist should always be open for reinterpretation, but you can never destroy evidence.And they were being watched, thinking they were clever….”

February 19, 2018 12:44 pm

The fossil record shows a sudden drop in fossils of mega fauna in regions when fossils of modern man turn up. Unfortunately, for political purposes and cheap fame, most happened before the Holocene.

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