Claim: Climate change has likely begun to suffocate the world’s fisheries

[note: open access study, seems to be models all the way down]

New research finds the ocean’s middle depths, home to many commercially fished species, started losing oxygen at unnatural rates in 2021

Peer-Reviewed Publication

AMERICAN GEOPHYSICAL UNION

IMAGE: CLIMATE CHANGE IS DRIVING OXYGEN OUT OF THE WORLD’S WARMING OCEANS AT UNNATURAL RATES, LIKELY SUFFOCATING MANY OF THE WORLD’S FISHERIES, ACCORDING TO A NEW STUDY IN GEOPHYSICAL RESEARCH LETTERS. view more CREDIT: PAUL EINERHAND/UNSPLASH

By 2080, around 70% of the world’s oceans could be suffocating from a lack of oxygen as a result of climate change, potentially impacting marine ecosystems worldwide, according to a new study. The new models find mid-ocean depths that support many fisheries worldwide are already losing oxygen at unnatural rates and passed a critical threshold of oxygen loss in 2021.

Oceans carry dissolved oxygen as a gas, and just like land animals, aquatic animals need that oxygen to breathe. But as the oceans warm due to climate change, their water can hold less oxygen. Scientists have been tracking the oceans’ steady decline in oxygen for years, but the new study provides new, pressing reasons to be concerned sooner rather than later.

The new study is the first to use climate models to predict how and when deoxygenation, which is the reduction of dissolved oxygen content in water, will occur throughout the world’s oceans outside its natural variability.

It finds that significant, potentially irreversible deoxygenation of the ocean’s middle depths that support much of the world’s fished species began occurring in 2021, likely affecting fisheries worldwide. The new models predict that deoxygenation is expected to begin affecting all zones of the ocean by 2080.

The results were published in the AGU journal Geophysical Research Letters, which publishes high-impact, short-format reports with immediate implications spanning all Earth and space sciences.

The ocean’s middle depths (from about 200 to 1,000 meters deep), called mesopelagic zones, will be the first zones to lose significant amounts of oxygen due to climate change, the new study finds. Globally, the mesopelagic zone is home to many of the world’s commercially fished species, making the new finding a potential harbinger of economic hardship, seafood shortages and environmental disruption.

Rising temperatures lead to warmer waters that can hold less dissolved oxygen, which creates less circulation between the ocean’s layers. The middle layer of the ocean is particularly vulnerable to deoxygenation because it is not enriched with oxygen by the atmosphere and photosynthesis like the top layer, and the most decomposition of algae — a process that consumes oxygen — occurs in this layer.

“This zone is actually very important to us because a lot of commercial fish live in this zone,” says Yuntao Zhou, an oceanographer at Shanghai Jiao Tong University and lead study author. “Deoxygenation affects other marine resources as well, but fisheries [are] maybe most related to our daily life.”

The new findings are deeply concerning and adds to the urgency to engage meaningfully in mitigating climate change, says Matthew Long, an oceanographer at NCAR who was not involved in the study.

“Humanity is currently changing the metabolic state of the largest ecosystem on the planet, with really unknown consequences for marine ecosystems,” he said. “That may manifest in significant impacts on the ocean’s ability to sustain important fisheries.”

Evaluating vulnerability

The researchers identified the beginning of the deoxygenation process in three ocean depth zones — shallow, middle and deep — by modeling when the loss of oxygen from the water exceeds natural fluctuations in oxygen levels. The study predicted when deoxygenation would occur in global ocean basins using data from two climate model simulations: one representing a high emissions scenario and the other representing a low emissions scenario.

In both simulations, the mesopelagic zone lost oxygen at the fastest rate and across the largest area of the global oceans, although the process begins about 20 years later in the low emissions scenario. This indicates that lowering carbon dioxide and other greenhouse gas emissions could help delay the degradation of global marine environments.

The researchers also found that oceans closer to the poles, like the west and north Pacific and the southern oceans, are particularly vulnerable to deoxygenation. They’re not yet sure why, although accelerated warming could be the culprit. Areas in the tropics known for having low levels of dissolved oxygen, called oxygen minimum zones, also seem to be spreading, according to Zhou.

“The oxygen minimum zones actually are spreading into high latitude areas, both to the north and the south. That’s something we need to pay more attention to,” she says. Even if global warming were to reverse, allowing concentrations of dissolved oxygen to increase, “whether dissolved oxygen would return to pre-industrial levels remains unknown.”

###

AGU (www.agu.org) supports 130,000 enthusiasts to experts worldwide in Earth and space sciences. Through broad and inclusive partnerships, we advance discovery and solution science that accelerate knowledge and create solutions that are ethical, unbiased and respectful of communities and their values. Our programs include serving as a scholarly publisher, convening virtual and in-person events and providing career support. We live our values in everything we do, such as our net zero energy renovated building in Washington, D.C. and our Ethics and Equity Center, which fosters a diverse and inclusive geoscience community to ensure responsible conduct.

*****

Paper title:
“Emerging Global Ocean Deoxygenation Across the 21st Century”

Authors:

  • Yuntao Zhou (corresponding author) and Hongjing Gong, School of Oceanography, Shanghai Jiao Tong University, Shanghai, China
  • Chao Li, Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, China; School of Geographic Sciences, East China Normal University, Shanghai, China

JOURNAL

Geophysical Research Letters

DOI

10.1029/2021GL095370 

ARTICLE TITLE

Emerging Global Ocean Deoxygenation Across the 21st Century

ARTICLE PUBLICATION DATE

19-Nov-2021

Disclaimer: AAAS and Eurek

From EurekAlert!

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Martin
February 2, 2022 6:03 am

Smells fishy to me 🙂

Joao Martins
Reply to  Martin
February 2, 2022 10:00 am

Yes. Climate change has likely begun to smell fishy many years ago… as with all pestilences, the smell doesn’t likely stop to increase.

Last edited 5 months ago by Joao Martins
Paul S.
Reply to  Martin
February 2, 2022 10:40 am

What a bunch of carp

John Tillman
February 2, 2022 6:07 am

How did fish survive the Holocene Climatic Optimum, the Eemian and even warmer and longer prior interglacials? Let alone the PETM and hotter Eocene.

jeffery p
Reply to  John Tillman
February 2, 2022 6:33 am

But this time it’s different!!!!!

/sarc

Disputin
Reply to  jeffery p
February 2, 2022 7:04 am

And worse than we thought!

Bill Powers
Reply to  Disputin
February 2, 2022 7:11 am

And its all our fault.

Reply to  Bill Powers
February 2, 2022 9:24 am

I blame the Russians,
Donald Trump
white supremacists
and even worse,
the unvaxxed.

Joao Martins
Reply to  Bill Powers
February 2, 2022 10:03 am

And it’s occurring in fisheries twice as fast as in the rest of the world.

Clyde Spencer
Reply to  Joao Martins
February 2, 2022 12:12 pm

That’s it! The fish are using up the oxygen.

LdB
Reply to  Bill Powers
February 3, 2022 1:43 am

Stop making CO2 or the fish get it … from the mafia.

Reply to  Disputin
February 2, 2022 9:23 am

Worse than worse than we thought.
Worse than we thought is so 2021 — get with the program for 2022

Smart Rock
Reply to  Richard Greene
February 2, 2022 1:40 pm

Worse than we are even capable of thinking!

john harmsworth
Reply to  Smart Rock
February 3, 2022 8:11 am

Wow! I never thought of that!

Joseph Zorzin
Reply to  Disputin
February 2, 2022 11:37 am

twice as worse!

Dara
Reply to  Joseph Zorzin
February 2, 2022 1:30 pm

We are approaching the worsest scenario for the oceans.

Rory Forbes
Reply to  Joseph Zorzin
February 2, 2022 2:59 pm

Peak worseness.

Joseph Zorzin
Reply to  Rory Forbes
February 3, 2022 2:48 am

peak wokeness

Rocketscientist
Reply to  Disputin
February 2, 2022 12:21 pm

and we’re running out of time!

MarkW
Reply to  Rocketscientist
February 2, 2022 3:37 pm

I’m running out of scotch.

Scott snell
Reply to  John Tillman
February 2, 2022 7:06 am

More importantly, how did the oceans survive hundreds of millions of years of tropical conditions, in which the poles were free of ice year-round, and the oceans warm from top to bottom?

MarkW
Reply to  Scott snell
February 2, 2022 7:14 am

More importantly, when did all the tropical fish die.

Reply to  John Tillman
February 2, 2022 7:13 am

They follow the waters that are most suitable for them. Homarus vulgarisms (the common lobster) move up and down, roughly around Cape Hatteras, as the ocean warms and cools, respectively. Palinurus (spiney lobster) cannot stand cold water and only go so far north along the eastern seaboard before the cooler temperature and occupation by Homarus stops them

Alan Robertson
Reply to  Charles Higley
February 2, 2022 10:09 am

Well, that’s fine for crustaceans, being able to move around and find better quarters, but think of the poor fish; they can’t just pack up and move when conditions don’t suit them, but just have to sit there and take it.

Surely that’s the way it is, or the sciencey paper would have outed that idea, right?

MarkW
Reply to  John Tillman
February 2, 2022 7:13 am

According to climate scientists, the oceans have warmed a whopping 0.03C degrees +/- 0.15C.

Tom Abbott
Reply to  MarkW
February 2, 2022 10:17 am

They sure have good instruments.

Clyde Spencer
Reply to  Tom Abbott
February 2, 2022 12:15 pm

Quantum instruments capable of spooky interactions instantaneously at infinite distances — it they don’t get tangled in their fishing lines.

Dean
Reply to  Tom Abbott
February 2, 2022 6:20 pm

Pfffft instruments are so 19th century.

Today, cutting edge global oceanic research uses models and is based on homogenised data based on tree rings of lemon trees, planted in pots and located next to 29 backyard pools in Akron Ohio.

PCman999
Reply to  Dean
February 2, 2022 9:57 pm

Plus the equipment to run the models can also hit 120fps in COD! Try that with a thermal couple.

Joseph Zorzin
Reply to  MarkW
February 2, 2022 11:39 am

catastrophic!

john harmsworth
Reply to  Joseph Zorzin
February 3, 2022 8:15 am

Another 1/100th of a degree and we can start catching cooked fish!

lee riffee
Reply to  John Tillman
February 2, 2022 7:32 am

That’s what I was thinking….not only recent warm periods but how about when dinosaurs walked the earth? We know from fossils that the seas were full of marine reptiles like plesiosaurs, plilosaurs and icthyosaurs. But if there were so few fish due to high temps, then what on earth did these marine predators eat?

Disputin
Reply to  lee riffee
February 2, 2022 7:48 am

Each other?

John Tillman
Reply to  Disputin
February 2, 2022 8:50 am
Last edited 5 months ago by John Tillman
John Tillman
Reply to  lee riffee
February 2, 2022 8:49 am

Cretaceous seas were much hotter than now, yet fish were plentiful.

John Tillman
Reply to  John Tillman
February 2, 2022 9:07 am

And in the Jurassic lived the largest known ray-finned fish:

https://en.m.wikipedia.org/wiki/Leedsichthys

Clyde Spencer
Reply to  lee riffee
February 2, 2022 12:20 pm

The mosasaurs would jump out of the water and catch unsuspecting therapods strolling along the beach. I know that to be true because I saw it in a Hollywood documentary.

PCman999
Reply to  lee riffee
February 2, 2022 9:59 pm

The Earth was objectively better off during warm periods than cold – and we’re in a milder cold period. The biosphere is aching to get back to the Optimum.

Eyal
Reply to  John Tillman
February 2, 2022 8:10 am

They didn’t!

John Tillman
Reply to  Eyal
February 2, 2022 8:51 am

Today’s coelacanths look a lot like their Mesozoic ancestors.

Duane
Reply to  John Tillman
February 2, 2022 8:45 am

They didn’t. They all died, and so now we live in a fishless world, didn’t you know?

ResourceGuy
February 2, 2022 6:07 am

I guess that means the Chinese fishing fleets are off the hook.

Tom Abbott
Reply to  ResourceGuy
February 2, 2022 10:19 am

The objective of the study?

It’s not Chicom overfishing, it’s climate change.

John Tillman
Reply to  Tom Abbott
February 3, 2022 10:28 am

Here, off South America’s Southern Cone’s Pacific and Atlantic coasts, they’re wiping out the squid, having already depleted the Western Pacific.

Last edited 5 months ago by John Tillman
AGW is Not Science
February 2, 2022 6:16 am

By 2080, around 70% of the world’s oceans could be suffocating from a lack of oxygen as a result of climate change, potentially impacting marine ecosystems worldwide, according to a new study. The new models find mid-ocean depths that support many fisheries worldwide are already losing oxygen at unnatural rates and passed a critical threshold of oxygen loss in 2021.

There you have it in a nutshell. Weasel words and pseudo “evidence” pulled from the excrement of “model” output. In other words, they put all their incorrect, bullshit assumptions into a computer model which then spat out a reflection of all the incorrect input assumptions.

Nobody should “Believe in Science” when this is what passes for it these days.

Reply to  AGW is Not Science
February 2, 2022 7:13 am

What change in climate increases temps in 1000m depth ?
Sun ???
No way…
Wait, models, CO2 ? 😀

Reply to  AGW is Not Science
February 2, 2022 7:31 am

“It finds that significant, potentially irreversible deoxygenation of the ocean’s middle depths that support much of the world’s fished species began occurring in 2021, likely affecting fisheries worldwide. The new models predict that deoxygenation is expected to begin affecting all zones of the ocean by 2080.”

This paragraph is even more out of it in that “irreversible” follows “potentially”. their “new models” can’t predict anything.

Hoyt Clagwell
Reply to  Fred Haynie
February 2, 2022 9:08 am

It translates to: We detected a decrease in oxygen one year ago, and assume that this will continue forever. Wouldn’t want these people to be my stock broker.

Tom Abbott
Reply to  Hoyt Clagwell
February 2, 2022 10:21 am

Alarmists think trends go on forever.

Clyde Spencer
Reply to  Fred Haynie
February 2, 2022 12:24 pm

their “new models” can’t predict anything.

They can predict the probability of getting published.

DD More
Reply to  Fred Haynie
February 2, 2022 2:31 pm

deoxygenation is expected to begin affecting all zones of the ocean by 2080.”

This ‘to begin’ date was chosen due to the youngest of our group is now 25, and by 2080 will be well into retirement eligible.

Al Chemy
Reply to  AGW is Not Science
February 2, 2022 7:56 am

Exactly. Models are not “science” per se. They are hypotheses. AND need to be tested via the SCIENTIFIC METHOD.

A scientific hypothesis must be falsifiable, implying that it is possible to identify a possible outcome of an experiment or observation that conflicts with predictions deduced from the hypothesis; otherwise, the hypothesis cannot be meaningfully tested.”

PCman999
Reply to  AGW is Not Science
February 2, 2022 10:01 pm

“the excrement of “model” output”!!!

Awesome -just awesome!

Hardy Gavin
February 2, 2022 6:18 am

“… under the RCP8.5 scenario”

I’m not sure why you actually refer junk like this to us.🤔🤔

Gregory Woods
Reply to  Hardy Gavin
February 2, 2022 6:44 am

for laughs….

Editor
Reply to  Gregory Woods
February 2, 2022 7:07 am

Yup. Nothing more ridiculous than model junkies doubling down on junk…junk models forced by junk RCPs to come to junk conclusions.

Regards,
Bob

Joseph Zorzin
Reply to  Bob Tisdale
February 2, 2022 11:43 am

climate change junkies

Mark Whitney
Reply to  Hardy Gavin
February 2, 2022 7:06 am

It is wise to be aware of stupid.

Brad-DXT
Reply to  Hardy Gavin
February 2, 2022 11:09 am

It provides us an opportunity to openly mock the leftists and shine light on how corrupt some researchers have become.

Bill Treuren
Reply to  Hardy Gavin
February 2, 2022 1:52 pm

The RCP8.5 scenario is a disgrace when invoked it can be stated they are not describing the extreme possible outcome but simply lying.
The RCP’s were established in the 1980’s we are a third through the period of projection and we are running below RCP2.6 this is dishonest propaganda we have it continuously in the NZ press who most closely resemble the media of the former USSR

Bruce Cobb
February 2, 2022 6:19 am

This paper belongs in the garbage zone.

Carlo, Monte
Reply to  Bruce Cobb
February 2, 2022 8:17 am

Journal of Irreducible Results.

Joao Martins
Reply to  Bruce Cobb
February 2, 2022 10:08 am

Was is collected in the Great Plastic Island off California?

oeman 50
February 2, 2022 6:20 am

How much does the sea temperature at 2?00 to 1000 m increase in response to a 1.5C increase in atmospheric temperature? At those depths (and pressures) oxygen saturation goes way up, so the amount of O2 available for respiration goes way up as well. This does not pass my BS meter.

jeffery p
February 2, 2022 6:32 am

Now hold on there partner — “models find” or “measurements found?”

How can a model find anything? At best, the models make projections. There are no findings. Models do not output facts or data.

Reply to  jeffery p
February 2, 2022 11:56 am

Models find exactly what they are programed to find.

Ed Zuiderwijk
February 2, 2022 6:37 am

And not an actual measurement in sight.

dodgy geezer
February 2, 2022 6:38 am

As usual, we stop reading at ‘models’…

Peta of Newark
February 2, 2022 6:40 am

Only ## El Sol can warm the ocean.
Certainly rain that falls on increasingly desertified lands will be warmer when it reaches the ocean but will float on the top, not only because of its warmth but that it is ‘fresh’
When it does it will cool and in doing so, heat the air immediately above the ocean’s surface.
Mmmm, wonder if Spencer’s Sputnik is seeing that?

## Climate Science can warm the ocean and in the name/shape of a guy answering to “Karl” did exactly that.
Karl binned the data from the ARGO floats when it wasn’t ‘going his way’
He then used data from ship’s engines intakes instead and then: Retired.
So as to avoid the flak he knew he’d rightfully receive.

Shoki Kaneda
February 2, 2022 6:49 am

And, when they are wrong, they’ll demand more money to “study the problem”.

David Guy-Johnson
February 2, 2022 6:49 am

Another contender for the junk science of the year oscars

Frank from NoVA
February 2, 2022 7:02 am

“But as the oceans warm due to climate change, their water can hold less oxygen.”

Thankfully Henry’s Law is selective and doesn’t hold for CO2…

/sarc

Dusty
February 2, 2022 7:02 am

“By 2080, around 70% of the world’s oceans could be suffocating from a lack of oxygen as a result of climate change, potentially impacting marine ecosystems worldwide, according to a new study.”

“Could” implies it also “Could not”.

Dr Ken Pollock
February 2, 2022 7:04 am

These guys know a lot about oceans, so it is dangerous to comment. But, why no mention of actual temperatures? They were this and now they are that…Then O2 concentrations were this and they are now that…Warmer oceans hold more O2, but the polar waters are especially vulnerable. All of this may be correct, but I distrust “models” in more or less any context! Maybe someone can supply what I see as missing data…

Gums
Reply to  Dr Ken Pollock
February 2, 2022 7:17 am

Salute!

Many thanks, Dr Ken.

Show me the data from actual measurements over the years, a;though those from a thousand yeaars ago are not available.

“losing oxygen at unnatural rates and passed a critical threshold of oxygen loss in 2021”

BEAM ME UP! What is “natural”?

I apparently missed my calling and did actual test engineering and did not get endless grants to do more studies.

Gums sends…

Jim Gorman
Reply to  Dr Ken Pollock
February 2, 2022 8:06 am

What data? Models don’t provide DATA! They provide outputs that are programmed and provided by the user.

Editor
Reply to  Dr Ken Pollock
February 2, 2022 2:03 pm

It is quite extraordinary that they failed to mention that all fish went extinct during the Eemian, and new fish species had to evolve from scratch in the following 100k years.

February 2, 2022 7:09 am

As the oceans have been warmer many times over the last million years or so, and most lately the Holocene Optimum, it is hard to claim a real stress on the oceans here. Just as polar bears have survived ALL interglacials (and glacials), warming has not been a problem.

They also forget that most of the oxygen in the oceans is made by phytoplankton, so the source is in the oceans. They might produce less oxygen when colder, but then most organisms (poikilotherms) also need less when colder as well. However, with warming these oxygen producing organisms, as well as land plants, will up their game and make even more oxygen, as everybody (poikilotherms and homeotherms) needs more oxygen with warming.

MarkW
February 2, 2022 7:11 am

Climate science in a nut shell.

Find a three month trend.
Project that trend out 50 years.
Proclaim looming disaster.
Ask for funds for more research.

Carlo, Monte
Reply to  MarkW
February 2, 2022 8:19 am

Get interviewed by The Guardian.

Mr.
Reply to  Carlo, Monte
February 2, 2022 9:59 am

Have you noticed that The Guardian refers to anyone who is not a Democrat as “far right”?

Is that because when you’re as far on the left spectrum as The Guardian is, anyone who is even a bit center is seen by them as far to their right?

Clyde Spencer
Reply to  Carlo, Monte
February 2, 2022 12:29 pm

And an endorsement testimonial from someone who claims she can see an invisible gas.

The irony of the whole situation is that in a sane world these people should be laughed off the stage.

john harmsworth
Reply to  MarkW
February 3, 2022 8:28 am

Find a tend? Hell, create a trend! It pays the same and a lot less work and zero risk of failure.

Thomas Gasloli
February 2, 2022 7:15 am

Oh for crying out loud! They didn’t actual get out of the office & go out and measure the O2, they used a model to “find” this conclusion.

Time to just shut the universities down; they are worse than useless, all misinformation all the time.

Disputin
Reply to  Thomas Gasloli
February 2, 2022 7:59 am

“…just shut the universities down…”

No need. As their victims students increasingly realise they are unlikely to get a job, they will increasingly opt for apprenticeships instead.

TonyG
Reply to  Disputin
February 2, 2022 12:57 pm

they will increasingly opt for apprenticeships instead.

Doubtful. That would require REAL work.

Last edited 5 months ago by TonyG
joe
February 2, 2022 7:40 am

this story uses words and phrases like,
By 2080,
around 70%,
potentially impacting,
The new models,
unnatural rates,
critical threshold,
climate models to predict,

and my favorite

return to pre-industrial levels remains unknown.”

i would like to know what type of instrumentation hardware was used to collect the data. they never talk about the instruments used. i think this is important. or was it all done with models? this publication is nothing but artwork. i am sick of it and starting to loose it. now excuse me while i go outdoors and clear my driveway from snow with a 21′ mtd snowblower powered by a 6hp tecumseh 2 cycle gas fueled engine.

joe

February 2, 2022 7:42 am

I think fish know more about their environment than these guys.

Linda Goodman
February 2, 2022 7:43 am

When Charles Rotter posts carbon fraudery on WUWT, the intelligent comments can be used by the fraudsters to hone their devious skills.

Mike McMillan
Reply to  Linda Goodman
February 2, 2022 11:13 am

Qué ?

Coach Springer
February 2, 2022 7:55 am

I noticed the authors. They’re Chinese – not there’s anything wrong with that.

Trying to Play Nice
Reply to  Coach Springer
February 2, 2022 9:04 am

It seems that most articles that come to the conclusion that we must stop using fossil fuels have a least one Chinese name attached.

Rory Forbes
Reply to  Coach Springer
February 2, 2022 3:13 pm

Rest assured that their science doesn’t last long. You’ll be hungry for more within minutes.

wolf at the door
Reply to  Rory Forbes
February 3, 2022 12:49 am

Love it! Chow man!

H. D. Hoese
February 2, 2022 8:06 am

They don’t seem to know about the convergence zones, only one paper (1983) before 2000. “Oxygenation only occurs in some coastal waters, the tropical ocean, the northern North Atlantic Ocean, and the Arctic Ocean….Preindustrial control simulations were used ….Note that we also provide uncertainties…(15 and 50 years).”

Is the reason that they start at 2000 have to do with this?–“A surprising feature of these results is that, even with a significantly improved dataset, the exact time of separation of a ring remains elusive……It is well known that determining the true uncertainty of geophysical spectra is fraught with problems. We often deal more with hope than with confidence.”     Sturges, W. and R. Leben. 2000. Frequency of ring separations from the Loop Current in the Gulf of Mexico: A revised estimate. J. Phys. Ocn.30:1814-1819 . 
https://doi.org/10.1175/1520-0485(2000)030<1814:FORSFT>2.0.CO;2

Eyal
February 2, 2022 8:13 am

Models all the way down (to the sea floor).

matt
February 2, 2022 8:16 am

“Climate Modeling” IOW “More BS”

DMacKenzie
February 2, 2022 8:25 am

Sheesh, “ocean oxygen content due to temperature”….Did it not occur to these scientists that fish gills evolved to supply sufficient oxygen over a wide range of water temperature ? And even survive red tides where O2 levels are very low, but fish can normally just swim deeper….

RevJay4
February 2, 2022 8:27 am

Another prediction which is bogus due to the methods used to make it. “Models”. Apparently, these bought and paid for “scientists” haven’t figured out that their credentials are pretty much no longer respected as having any meaning. Well, other than impressing the barista at the coffee shop, along with the 5 dollar bill to pay for the beverage. Yup.

Duane
February 2, 2022 8:44 am

The change in solubility of oxygen in water with temperature is a nothing burger of a change at the rate that ocean temperatures are increasing, if at all. There is nothing that conceivably change ocean temperature by even a tiny fraction (hundredths) of 1 deg C over the next 60 years.

The difference in temperature across the water column in oceans varies by thousands of times that much – ranging from as high as 30 deg C at the surface in tropical areas to 0 deg C at the seabed.

In other words, with overall temps varying at most a few hundredths of 1 deg C over time, at a constant depth and latitude, and no changes in overturning currents, a fish would only need to increase their “average swimming depth” – if there is such a thing – by a couple of feet to maintain exactly the same constant oxygen content in the seawater.

Seriously, THIS is what they’re worried about?

SMH

This is the equivalent of the apocryphal theologians arguing over how many angels can dance on the head of a pin.

Vuk
February 2, 2022 8:44 am

EU is revolting !
Nuclear and natural gas energy plants could be counted as “green energy” under controversial EU plans just unveiled.
The European Commission says it has decided that both types of energy can classify as “sustainable investment” if they meet certain targets.
But the move has divided the EU, and been fiercely opposed by some members.
https://www.bbc.com/news/world-europe-60229199

Garboard
February 2, 2022 8:47 am

Since this is nothing more than modele warming only modeled fish will be affected

Duane
February 2, 2022 8:47 am

Apparently “climate scientists” are “evolution deniers”.

TeddyLee
February 2, 2022 9:06 am

All this from the Zhous Who of the CCP climate subversion army.

February 2, 2022 9:21 am

Wild guess prediction based on climate computer games.
Computers can be programmed to predict anything.
There are no data (no data for the future)
Just unproven theories, speculation and wild guess assumptions.
Meaningless climate astrology..
Not real science.
Why is this here?
For comedy?

Tim Gorman
February 2, 2022 9:23 am

“The middle layer of the ocean is particularly vulnerable to deoxygenation because it is not enriched with oxygen by the atmosphere and photosynthesis like the top layer, and the most decomposition of algae — a process that consumes oxygen — occurs in this layer.”

“This zone is actually very important to us because a lot of commercial fish live in this zone,”

So the depth zone that is not enriched with oxygen is where a lot of commercial fish live?

It makes me cry when I read things like this from so-called scientists. Did *anyone* actually read this paper before it was published?

Commercial fish live where the environment provides what they need. That’s food and oxygen. Why would commercial fish live in a worse environment for their survival when they can move to one that is better? That just goes against every evolutionary theory I’ve ever read!

Joe Gordon
February 2, 2022 9:27 am

Gee, “model” finds “tipping point,” disaster inevitable. Haven’t seen that before.

How in the world is this considered research? A mildly skilled pre-teen could program a computer to input a bunch of gibberish and model a disaster.

I’d be willing to bet that 97% (I chose that number because, Science) of “researchers” at universities haven’t spent enough time outside to acquire even a mild suntan.

February 2, 2022 9:37 am

Gish-galloping climate catastrophism won’t make it so.
But that won’t stop them trying.

bonbon
February 2, 2022 9:46 am

Not so fast…
Has anyone had a chance to use onezoom with an incredible fractal online fast zoome for >2 billion species?

Have a look at this little critter :

https://www.onezoom.org/life/@Nitrosopumilus_maritimus_SCM1=922115?img=best_any&anim=flight#x341,y225,w0.7277

This guy produces O2 in the dark, no photosynthesis , and the ocean is stuffed with them.
In other words this critter is independent of Solar insolation, and CO2.
This guy is a Nitrogen fixer also.
See:

https://www.nature.com/scitable/knowledge/library/the-nitrogen-cycle-processes-players-and-human-15644632/

https://www.biorxiv.org/content/biorxiv/early/2021/04/01/2021.04.01.436977.full.pdf

https://en.wikipedia.org/wiki/Nitrosopumilus

None of this in in the models for sure, yet.

bonbon
February 2, 2022 9:47 am

Not so fast…
Has anyone had a chance to use onezoom with an incredible fractal online fast zoome for >2 billion species?

Have a look at this little critter :

https://www.onezoom.org/life/@Nitrosopumilus_maritimus_SCM1=922115?img=best_any&anim=flight#x341,y225,w0.7277

This guy produces O2 in the dark, no photosynthesis , and the ocean is stuffed with them.
In other words this critter is independent of Solar insolation, and CO2.
This guy is a Nitrogen fixer also.
See:

https://www.nature.com/scitable/knowledge/library/the-nitrogen-cycle-processes-players-and-human-15644632/

None of this in in the models for sure, yet.

bonbon
Reply to  bonbon
February 2, 2022 9:49 am

A good overview here :

https://www.youtube.com/watch?v=kyhJJLk7St8&list=LL&index=10&t=1s

Numerous published papers linked at that page…

bonbon
Reply to  bonbon
February 2, 2022 10:42 am
Joao Martins
February 2, 2022 10:10 am

The new study is the first to use climate models to predict how and when …

Looks like settled science!…

Alfred T Mahan
February 2, 2022 10:33 am

This is a load of codswallop.

Clyde Spencer
Reply to  Alfred T Mahan
February 2, 2022 12:37 pm

But, it makes for a halibut of a good line.

HOJO
February 2, 2022 10:44 am

I see this as the same old NWO story as they tell us we are the killers when those who spoke it dealt it . They seem to be wanting all living things from bugs to fish to humans and every animal to not exist anymore. I just don’t get the bigger picture . You can’t rule what is not their.The push is massive and seems to have something to do with agenda 2030. Call me a nut but the pieces are coming together. Model my as*

Philip
February 2, 2022 10:47 am

Who thought the oceans would be knee deep in bullcrap.

Peter Fraser
February 2, 2022 10:58 am

These grifters keep producing this climate porn while most western countries are experiencing upticks in youth suicide.

Paul C
February 2, 2022 11:26 am

Presumably the conclusion is that offshore wind farms must be eliminated in order for coastal oxygenation of seawater to be restored? Or perhaps that ocean circulation patterns PDO, AMO, ENSO, etc have some trivial effect on the water, so we have to observe multiple complete cycles. Or maybe that the Chinese are staving off de-oxygenation by removing all the oxygen consuming fish? Or perhaps that they just need an awful lot more funding to run more models, and perhaps if they score sufficient grants will go off for extended field research in the south pacific.

Andy Pattullo
February 2, 2022 11:32 am

More grant money wasted on tea leaves. Modelling cannot tell us what will happen to oxygen in the oceans unless the model is validated by proving ability to accurately predict. If there is a problem of declining O2 in the ocean it should be easy to demonstrate with numbers from actual measurements. Where are those numbers?

Why should we believe that CO2 in the atmosphere that is many times lower than the average during the blossoming of ocean and land organisms on earth, will lead to warming that, at present is much less than the average on planet Earth during the past few billion years. And then we are to believe that will lead to devastation of ocean life due to low oxygen levels, when there is no evidence this ever happened in the past at higher CO2 and temperature levels.

If I had the same models I would sell them for scrap and spend the paltry proceeds on cold beer.

whatlanguageisthis
February 2, 2022 11:34 am

Am I reading this correctly? This study used the output of an atmospheric climate model as an input to model the O2 levels of the ocean in three zones, and based on that model of a model, determined the oceans started suffocating last year? Since it is a past event, is there measured data to confirm this?

Another question – does O2 drive ocean circulation now? I was of the understanding that the currents were driven by the plant’s rotation, temperature differences, and salinity differences. This is the first I heard that dissolved oxygen was the driver.

Joseph Zorzin
February 2, 2022 11:36 am

“The study predicted when deoxygenation would occur in global ocean basins using data from two climate model simulations…”

data from models? why do they let idiots write stuff like this?

Clyde Spencer
Reply to  Joseph Zorzin
February 2, 2022 12:39 pm

Their jobs depend on it!

William B Handler
February 2, 2022 11:46 am

I really do not understand this concern. If you look at the information on the solubility of oxygen (https://www.engineeringtoolbox.com/oxygen-solubility-water-d_841.html) does not change suddenly with temperature, its a very gradual change, and is also affected by salinity and pressure. Is it not more likely that dead zones are caused biologically, like we get in the great lakes due to algae blooms.

DHR
February 2, 2022 12:04 pm

ARGO information shows that the temperature of the top few hundred feet of the ocean is cyclic and colder water can hold more oxygen than warmer water. For the past several years ocean near-surface water temperature has been declining. Surface water has a hard time getting much above 28C because increasing evaporation as the water warms eventually plateaus the temperature increase. The temperature of the deep ocean is not changing. ARGO data also show that the top few hundred feet of the ocean’s surface has been freshening and fresher seawater can hold more oxygen than saltier seawater. These data suggest that the subject study is likely wrong.

aussiecol
February 2, 2022 12:32 pm

So does that mean our oceans are turning to hydrogen?
That would solve the problem of producing hydrogen to combat climate change. sarc.

Richard Brown
Reply to  aussiecol
February 5, 2022 6:18 am

I thought the oceans were turning into acid, thus dissolving everything…..

Gunga Din
February 2, 2022 3:55 pm

The solution is simple.
Sequester all the Carbon in the atmosphere’s CO2 then pump all the remaining O2 into the layer of the oceans where they say oxygen is being depleted.
Problem solved!

garboard
February 2, 2022 4:49 pm

if i remember correctly , isn’t that how Godzilla met his end ?

Laws of Nature
February 2, 2022 5:26 pm

hmm, a quick google search

oxygen Solubility in Fresh and Salt water

seems to reveal that the relative change is less than 1% per °C warming.
Of course there is a pressure change when as the water goes deeper, but I cant see how that changes the fact that the temperature dependence is really small.

Seems fishy indeed.

ATheoK
February 2, 2022 6:10 pm

“according to a new study.

The new models find mid-ocean depths that support many fisheries worldwide are already losing oxygen at unnatural rates and passed a critical threshold of oxygen loss in 2021.

The new study is the first to use climate models to predict how and when deoxygenation, which is the reduction of dissolved oxygen content in water, will occur throughout the world’s oceans outside its natural variability.”

More alarmist self satisfaction models.

lee
February 2, 2022 6:31 pm

“But as the oceans warm due to climate change, their water can hold less oxygen.”

Just how much O2 loss are we talking about with this 14+/-11 zettajoules (0.005ºC+/-0.004ºC) warming? 🙄

PCman999
February 2, 2022 9:53 pm

Lack of shipping due to covid means less mixing of the oceans, and less iron leaching from their hulls to fertilize the ocean. – well I was going to say that but since the new “research” is just ‘models all the way down’ I won’t waste my brain cells. They have no idea what is going on in the ocean layers and they’re even to lazy to write up a grant proposal for a really choice cruise, I mean research voyage actually measuring the O2 levels.

Muzchap
February 3, 2022 4:54 am

I believe it’s a new variant… Cod-vid…

Doonman
February 3, 2022 2:08 pm

But as the oceans warm due to climate change, their water can hold less oxygen.

The oceans warm due to sunshine. The atmosphere cannot warm the oceans. There are no studies anywhere that show this happening. If there were, climate activists would cite them endlessly, but when asked to produce just one, all you hear is crickets.

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