Claim: Marine heatwaves are human made

UNIVERSITY OF BERN

Research News

IMAGE
IMAGE: THIS DATA IMAGE SHOWS THE MONTHLY AVERAGE SEA SURFACE TEMPERATURE FOR MAY 2015. BETWEEN 2013 AND 2016, A LARGE MASS OF UNUSUALLY WARM OCEAN WATER – NICKNAMED THE BLOB -… view more CREDIT: COURTESY NASA PHYSICAL OCEANOGRAPHY DISTRIBUTED ACTIVE ARCHIVE CENTER

A marine heatwave (ocean heatwave) is an extended period of time in which the water temperature in a particular ocean region is abnormally high. In recent years, heatwaves of this kind have caused considerable changes to the ecosystems in the open seas and at the coast. Their list of negative effects is long: Marine heatwaves can lead to increased mortality among birds, fish and marine mammals, they can trigger harmful algal blooms, and greatly reduce the supply of nutrients in the ocean. Heatwaves also lead to coral bleaching, trigger movements of fish communities to colder waters, and may contribute to the sharp decline of the polar icecaps.

Researchers led by Bern-based marine scientist Charlotte Laufkötter have been investigating the question of how anthropogenic climate change has been affecting major marine heatwaves in recent decades. In a study recently published in the well-known scientific journal Science, Charlotte Laufkötter, Jakob Zscheischler and Thomas Frölicher concluded that the probability of such events has increased massively as a result of global warming. The analysis has shown that in the past 40 years, marine heatwaves have become considerably longer and more pronounced in all of the world’s oceans. “The recent heatwaves have had a serious impact on marine ecosystems, which need a long time to recover afterwards – if they ever fully recover,” explains Charlotte Laufkötter.A huge increase since the 1980s

In its investigations, the Bern team studied satellite measurements of the sea surface temperature between 1981 and 2017. It was found that in the first decade of the study period, 27 major heatwaves occurred which lasted 32 days on average. They reached maximum temperatures of 4.8 degrees Celsius above the long-term average temperature. In the most recent decade to be analyzed, however, 172 major events occurred, lasting an average of 48 days and reaching peaks of 5.5 degrees above the long-term average temperature. The temperatures in the sea usually fluctuate only slightly. Week-long deviations of 5.5 degrees over an area of 1.5 million square kilometers – an area 35 times the size of Switzerland – present an extraordinary change to the living conditions of marine organisms.Statistical analyses demonstrate human influence

For the seven marine heatwaves with the greatest impact, researchers at the University of Bern carried out what is referred to as attribution studies. Statistical analyses and climate simulations are used to assess the extent to which anthropogenic climate change is responsible for the occurrence of individual extremes in the weather conditions or the climate. Attribution studies typically demonstrate how the frequency of the extremes has changed through human influence.Without ambitious climate goals, marine ecosystems might disappear

According to the findings of the attribution studies, major marine heatwaves have become more than 20 times more frequent due to human influence. While they occurred every hundred or thousand years in the pre-industrial age, depending on the progress of global warming, in the future they are set to become the norm. If we are able to limit global warming to 1.5 degrees, heatwaves will occur once every decade or century. If temperatures rise by 3 degrees, however, extreme situations can be expected to occur in the world’s oceans once per year or decade. “Ambitious climate goals are an absolute necessity for reducing the risk of unprecedented marine heatwaves,” emphasizes Charlotte Laufkötter. “They are the only way to prevent the irreversible loss of some of the most valuable marine ecosystems.”

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From EurekAlert!

133 thoughts on “Claim: Marine heatwaves are human made

  1. No no, its geothermal or solar or the PDO or El Nino or sunspots or just the end of the LIA or lying scientists or a socialist takeover or a plot to steal the election from Trump or, or….poley bears or Al Gore’s fault.
    ANYTHING BUT CO2

    Thats what “Claim…” means to Anthony Watts. Afterall what could the actual scientists know?

    • Actually NASA says that it is the changes in cloud cover, but don’t let facts get in the way of your elusions.

        • Gees, I thought a climate guru like you would know that.

          (Snipped the rest of your off topic baseless personal attack, calm down Andy….) SUNMOD

          • Actually, we are discussing a totally fake image made with a virtual fish-eye lens. Try to get that perspective in Google Earth (Globe View).

        • For that matter, where does someone, anyone, Beuhler, say how these alleged statistical proofs are clearly and unambiguously proving human influence on marine temperatures? I suppose NASA could pull such an hypothesis out of the same ass from which it pulled the climate models of Gavin Schmidt and his mentor James Hanson. I think I’ll call that particular sphincter, the GISShole.

      • Cloud cover does control the planet’s temperature by reflecting sunlight back to outer space. And cloud cover (a day or two later and a few hundred miles away) is controlled by sea surface temperature and it’s 7% increase in water vapour per degree.

        • Oh yeah… evaporation and precipitation are another significant automatic control on the Earth’s temperature, also a result of the 7% water vapor increase per degree of ocean surface warming.

          • In retrospect, I think 2015 was the year when on our annual salmon fishing trip to west side vancouver island there were schools of makarel in our camp inlet, we had a blast yanking them out with pole line and hook
            Oily and smelly, they made great halibut bait, after you chop them into chunks.

            We were told the water was warmer omg omg

            Not been seen since
            Crisis averted

    • So, according to your logic Loydo, then all additional warming is due to CO2. You believe that CO2 and methane are the control knob for the climate. But you fail to explain why Antartica doesn’t experience the same level of warming as the NH. There should be some significant measurable warming in Antartica if your hypothesis is correct, since CO2 is well distributed throughout the global atmosphere.

    • Maybe they know ocean temperatures back further than the 1980’s, so they can do a comparison. Of course not it has to be “unprecedented”. 😉

    • Can you explain why all the heat in the atmosphere decided to concentrate itself in one spot in the Ocean? I’d be fascinated to know the process.

    • Models and fake statistics all the way down..

      Just the sort of thing to FOOL the AGW collaborators and junkies.

    • Seems the U of B’s Climate Parrots have been tainted by GREEN MONEY. The Swiss are normally honest and ethical what happened here?

    • So subsurface volcanism doesn’t enter into it either? Plate boundaries that are moving and are thin enough to permit eruptions don’t count for something?

      Gee, that’s a major geological factor where I come from.

    • Loydo, explain why….without cherry picking dates…it’s exactly the same rate it was before global warming….when CO2 levels were ~290ppm

      CO2 has increased to ~400ppm….and has had no effect on the rate

      • Why would anyone be surprised at fluctuations? If CO2 was the only forcing, then your surprise might be justified, but who thinks that? Temps have plateaued since the last El Nino as well. Surprised?

        • Still just fantasies from Loy… DOH !!

          1… Do you have any empirical scientific evidence for warming by atmospheric CO2?

          2… In what ways has the global climate changed in the last 50 years , that can be SCIENTIFICALLY proven to be of human causation?

          “Temps have plateaued since the last El Nino as well”

          Showing once again that warming only occurs at El ninos, hence cannot be human caused.

          Maybe you are finally waking up to reality ! Nope, not going to happen…

          Temperatures are starting to fall as the La Nina approaches.

          https://notrickszone.com/wp-content/uploads/2020/09/NCEP-GFS-2m-1024×481.png

          • You didn’t say “sea level rise”…

            “it has had no effect on the “rate”….it is exactly the same
            What data are you referring to?

          • Let’s try again

            1… Do you have any empirical scientific evidence for warming by atmospheric CO2?

            2… In what ways has the global climate changed in the last 50 years , that can be SCIENTIFICALLY proven to be of human causation?

            There is absolutely zero evidence of humans affecting sea level rise…

        • Loydo, I asked you to explain why the increase in CO2 has had no effect on the “rate” of sea level rise……the rate was exactly the same before global warming and before CO2 ever increased…and after CO2 has increased….it has had no effect on the “rate”….it is exactly the same

    • Loydo, it is sunspots, El Nino, and PDO, but do you understand how and why?

      I used Laufkötter’s results in my 2020 sun-climate symposium poster:

      https://i.postimg.cc/YS8mC3Mn/GB-Reef-and-Marine-Heat-Waves.jpg

      The common denominator is high TSI above my ocean warming threshold:

      https://i.postimg.cc/T15WB1XN/AGU-Fig5.jpg

      Marine heatwaves aren’t human-driven whatsoever, so ambitious climate goals will make no difference to whether marine ecosystems might disappear.

    • ““The recent heatwaves have had a serious impact on marine ecosystems, which need a long time to recover afterwards – if they ever fully recover,” explains Charlotte Laufkötter.A huge increase since the 1980s”

      Actually the only “increase” is in our ability to detect and observe. It’s confirmation bias all the way down.

    • Yes, yes it is all those things and CO2 has very little to do with it. We know that. Why don’t you?

      Loydo you you are either a tool or a fool. Tools are on the GovMint (and Soros) payroll, funded to sit on comment boards and social media sites to spread misinformation and misdirection. Fools are public school graduates accepted into college for the full Monty of indoctrination and brainwashing. Fully triggerable by an endless series of Hobgoblins all of them imaginary (hat tip to H.L.)

    • Loydo please give an account of all the fossil fuels you use in a typical day, averaged, and electricity, natural gas, etc. all of it, paints, pharmaceuticals, plastics. thanks in advance.

    • There have been protracted periods of high temperature over land areas such as North America in the 30’s or India in the late 1800’s as well as Australia and China and even Europe. Is there some reason why a similar phenomenon can’t derive over oceans from the same chaotic weather sytems?
      How do you function with no ability whatsoever to think for yourself? God help you if you ever stumble upon the Shopping Channel.

    • Once again, reality and Loydo manage to pass each other in the dark.

      Loydo can’t be bothered with refuting actual arguments made by actual people. Instead it insists on making up arguments for others. Perhaps because refuting unmade arguments is all that it is capable of.

    • Yes it’s called history.

      We know of these processes, and have lots of empirical data on them. We still don’t know all we need to know about them.

      We know about geothermal, but we don’t know its contribution overall, to overall OHC because it’s all guesstimates because of the logistical financial and technical shortcomings.

      We have much data on these things and over a century of science done by hundreds of thousands of scientists and researchers, a long empirical history exists

      CO2 though..
      1. No geological or empirical evidence history that it ever controlled temperatures
      2. No geological or empirical evidence currently, that it controls temperatures

      The former relies on a vast amount of research and evidence
      The latter relies on computer models that have never been tested against reality, models that cannot even create the past without being manually forced to do so. Models that overshoot observed warming by up to 200%. Models that are being replaced, so if you claim these models were “legit”, then how come they are being replaced with model sets that produce different results? and you will say those models are correct too.

      Thinking is hard mmkay

    • Lets not forget the second half of the 20th century was a time of a very active sun.
      That^, clouds and ocean cycles give you marine heatwaves

      There is 0 evidence for it being humans, because the “scientist” never ever actually provides one jot of evidence.

      This is cargo cult correlation science at its best, or should I say worse.
      This is yet another feeder at the trough of climate slop

  2. Ho ho, from what I’ve heard, water tend to circulate all the time.
    I.e. there is always some warmer water some place and some colder water some other place.
    Why did these guys only find the warmer places and not the colder?
    Did the colder water get spilled on the way to the peer review?
    Ho ho.

  3. And what were the seas doing between 0 and 1981? It’s like the hole in the ozone layer again. It wasn’t there until somebody found it. This is not science.

  4. Loydo-san:

    The satellite image of this article is of the very rare 2014~15 “The Blob” event, which was caused by a Ridiculously Resilient Ridge of high-atmospheric pressure.. it was not caused by CO2 forcing…

    Global oceans are now cooling due to a strong developing La Niña event and possibly because the Pacific and Atlantic oceans are reentering their respective 30-year cool cycles.

    Look at all the gigantic cooling areas of global oceans in the below link (btw, most of the gray areas should also be blue, but NOAA changed its color coding since June 2020 to hide the extent of the current cooling):

    https://www.ospo.noaa.gov/Products/ocean/sst/anomaly/

    Yes, CAGW is a scam run by immoral global Leftists wanting to steal $100’s of trillions from taxpayers around the world to fix a “catastrophe” that doesn’t exist…

      • Poor loy, shows graph representing about 0.05ºC of ocean warming.

        How about you look at it in perspective, loopy-loy

        a Maybe that will cure your ADD manic anxiety syndrome.

        https://i.postimg.cc/zGjnSbzn/OHC_in_perspective_2.jpg

        See that little red squiggle at the end.

        Ocean temperature are still WELL BELOW what they have been for most of the last 10,000 years, having barely recovered from the freezing cold of the LIA.

        Get a grip, little worm, you cannot afford to damage what you have left of your mind.

        And STILL absolutely ZERO EVIDENCE that the beneficial warming has anything to do with human anything.

        You are a scientific ABYSS, loy.

        (You are a smart man, you don’t need to use a lot of snarky, personal attacks on him, he is being civil, why can’t you, Andy?) SUNMOD

      • ” SST rises unabated.”

        Absolute PROOF that the warming is NOT coming from the atmosphere.

        Or do you really think the colder atmosphere can warm the ocean…

        Only SOLAR energy or energy from under the oceans can do that

        The mythical “back-radiation” from atmospheric CO2 is so weak that it cannot even penetrate a micron into the water surface.

        You poor scientifically illiterate twerp.

      • A longer time series , as published by the UK Met Office -Had Centre (HADSST4) gives a slightly different , and I thnk more revealing picture in terms of mechanisms;
        https://www.metoffice.gov.uk/hadobs/hadsst4/HadSST4_accepted.pdf
        especially look at the diagrams for the glolal anomaly (adjusted – not very different from unadjusted) from 1850 to present:
        https://www.metoffice.gov.uk/hadobs/hadsst4/diagrams.html (Fig 9)
        On it there are 2 rise and fall periods , the first being from ca 1905 to 1945 and the second from ca. 1980 to 2015, a 35 to 40 year period or 70 to 80 for the full cycle . In each case the rise is followed by a fall and at present we seem to be in the cooling phase . The second cycle is displaced in terms of anomaly upwards by about 0.4C, which is presumably the AGW contribution , but one should not ignore the other mechanism responsible for the anomaly cycling . I assume that the latter mechanism ,is or is related to, the AMO , christened I undestand by the Great Mann himself.
        Note that the authors of the Met Office paper quote :
        “Together with air temperature over land, sea-surface temperature is the most important variable for determining the state of the climate system”
        If so, then understanding the mechanisms for rise and fall of SST is crucial to predicting future trends and hysterical panic over one short time series is not a mature or educated response (IMO).

      • You do know that there was absolutely no ability to measure ocean heat content before about 2003, don’t you Loy.. (or were you IGNORANT about that, as well !)

        The coverage was sparse to non-existent, especially in the southern oceans, and the error bands would be magnitudes larger than any anomalies

        Even with ARGO buoys the coverage is still very sparse

        https://i.postimg.cc/YC2vfJSN/Ocean-Measurements.png

        Most of that chart is purely model based speculation.

      • “SST rises unabated.”

        Not really!
        But your simplification attempt doesn’t hold:
        Why are the dT rates the same for the period WWI to WWII and 1970s to now?
        At least it we can see from the two equal rates, that CO2 has little or nothing to do with it.

        So Loydo, would you be so kind to prove the fingerprint from humans and farm animals. Until then, work for finding explanations, rather than ceaselessly discarding everyone else’s suggestions.

        If you wish to revert your welfare to preindustrial time, just say it strait instead of postulating we all need to follow You and Greta.

          • WOW,

            you STILL haven’t figured out that warming oceans means increased atmospheric CO2

            Why do you persist in being so bizarrely ignorant !!

            1… Do you have any empirical scientific evidence for warming by atmospheric CO2?

            2… In what ways has the global climate changed in the last 50 years , that can be SCIENTIFICALLY proven to be of human causation?

            3… Do you have ANY evidence at all that CO2 causes ocean warming

            Its all just a zero-science FANTASY to you, isn’t it loopy-loy.

            Belligerent and willful ignorance.

          • ROFLMAO

            Heavily adjusted recent SST’s..

            and totally FABRICATED. before about 2003

            They did NOT have measurements of SSTs for most of the SH before then, and forget about anything anywhere before 1950..

            https://i.postimg.cc/8PT3MYqB/ocean-temp-coverage.png

            And yet again, you seem to DENY that the LIA was a very cold period, and that sea temperature have been far warmer before that anomalously cold period.

            You have zero sense of perspective of time.

            You are devoid of any actual science.

            Even Hadley contradict that load of tosh

            https://i.postimg.cc/T3x8TLZW/hadsst1995to012018.jpg

            Showing very clearly that the ocean warming was ONLY in 1998 (El Nino) and the 2015/16 El Nino Big Blob

            Between 2001 and 2014…. THERE WAS NO SST WARMING

            Before that , is purely modelled data, because there was not sufficient data to do anything else.

            UAH shows no ocean warming from 1980 -1997

            https://i.postimg.cc/66Zxg5fM/UAH_oceans_1980-1997.png

      • Your own link shows how linear the sea surface temp trend has been over the last CENTURY, but human CO2 emissions have been far higher in the last 50 years than the previous 50. The sea surface temp was rising at about the same (slow) rate at low atmospheric CO2 concentrations 100 years ago as they have been more recently. Yet somehow you think that the dara you posted supports your point? Seriously?

      • Looks really scary doesn’t it – until you actually look at it and see that we are talking about 0.33 degrees.

      • Loydo stridently posts a graph showing convincingly that anthropogenic CO2 doesn’t cause the rise in ocean warming but believes that anthropogenic CO2 causes the rise in ocean warming.

        Just unbelievable stupidity.

    • Samurai-sama,
      The Loydo believes the atmosphere heats the oceans, not the reverse! It’s fundamentalist religious beliefs are impenetrable to logic, reason or science; having been inculcated by a series of con-artists and politicians posing as scientists! Forgive my impertinence, but I believe you are wasting your valuable time trying to convince him otherwise!
      To paraphrase an old adage; you can lead a Loydo to the Truth, but you can’t make it THINK!

  5. “Marine heatwave can lead to increased mortality among birds…….” etc etc etc
    CAN ? Evidence?
    Plenty of evidence of increased mortality among birds, bats and insects caused by” eco-friendly ” wind turbines.

      • There was one guy who apparently escape the dreaded mortality syndrome after a couple of days as a body in a cave. I agree you would think a supposed science article could phrase that a bit better.

  6. As a geologist with paleontology training, I have walked extensively through marine formations of Cretaceous age, when there was “hothouse earth” conditions, and can reassure (rational persons) that marine ecosystems did not disappear. In contrary, marine ecosystems seemed to be totally enjoying the conditions, with large numbers and large specimen sizes. These fossilized evidence of the robust marine ecosystems includes shelled, gilled, mammals (plesiosaurs) and many other types. If the marine “blobs” become more common the dinosaurs might make a comeback. Don’t wait for it.

    • Ron,
      Be careful what you say! The Loydo is very impressionable, and might easily take your humor is seriously!
      I can see it now, running around, screaming; “The dinosaurs are coming! The dinosaurs are coming! Aaaacck!!”

    • Loydo either doesn’t know about or IGNORES (gasp!) those black smokers on the ocean floor that are awash in all sorts of wildlife like giant tube worms, shrimp by the thousands and other critters too numerous to mention.

      But that that would reduce the whole ‘it’s all CO2’s fault!’ stuff that he carries around with him.

      • Loydo / Griff are paid to make stupid comments and divert the conversation away from intelligent discourse.

      • Good comment, Sara. Those black smoker ecosystems are totally devoid of dependence on solar energy. I wonder what they taste like?

      • Not sure, Ron Long, but they’re expelling a lot of minerals into their AO and the critters are happily feasting on that stuff (especially the tubeworms).

        Probably has a high mineral content and a slightly metallic flavor??? Copper on the island of Cyprus originates in malachite. Makes lovely jewelry and when heated to release the copper, loses that green color.

    • “mammals (plesiosaurs)”……do they teach that in palaeontology? (You mean lung-breathing ?)

      Seabirds and seals DO suffer in EN hot spots off the Pacific W coasts when their prey moves away or goes too deep. After the event,the system is restored.

    • Your -0.8 degrees trumps (npi) Loydo / Griff’s 0.33 degrees by… let me see… a whopping 1.13 degrees! The end is here! It’s worse that we thought!

  7. Quote.
    “Statistical analyses and climate simulations are used to assess the extent to which anthropogenic climate change is responsible for the occurrence of individual extremes in the weather conditions or the climate.”
    I guess that proves computer simulation is a wonderful tool, it enables a 5.5 deg C increases over sea areas extending to 1.5 million sq km can be achieved.

  8. -“If we are able to limit global warming to 1.5 degrees, heatwaves will occur once every decade or century. “-
    Every decade or century?
    Not quite a settled science yet , is it ?

  9. Are these researchers not hoist by their own petard? First, they declare that in the last decade there have been 172 ocean heat wave events. Then they declare that if warming can be kept within 1.5C there would only be such an event “once every decade or century.” As warming is within 1.5C at this time, how did they get 172 events this last decade? Moreover a prediction of “once every decade or century” confesses its own inadequacy, does it not? Why not once every decade or century or millennium? These researchers have no idea, and the only evidence based warming around is their own hot air. Switzerland, a small country with many virtues, is also curiously politicized, its people inhabiting a rich bubble, but desperately wanting to be part of the wider world. Many of their themes are copy and paste.

  10. I missed a “t” while reading the name Laufkötter and read it as Run-Bastard.

    Beside that, the over sensitive ecosystem the lady is talking about, can only have existed the last 90 years. Based on the knowledge that heat waves in the 1930s may even have surpassed what we see today.
    Laufkötter fails to explain if these ecosystems are only 90 years old or if they are way older, having somehow survived the 1930s, the viking age, the roman period, etc.

  11. Didn’t the ARGO buoys get sent out to confirm ‘ManMadeGlobalWarming and spectacularly failed.

    How did they generate that graphic?
    As per Roy Spencer and his Sputnik, also why it seems warm under a cloud – sea surface temp (that of the water) need not and often does *not* correspond to air temperature.

    (Spencer’s Sputnik looks at radiation of between 55 and 60GHz coming from atmospheric oxygen, at very best to plus/minus 2C
    How do we get a result for Global Alomonolomnies at 2 decimal places?
    How did he survive when his IR thermometer measured a cloud above his head with a temp of 42C – doesn’t Lapse Rate suggest a surface temp where he was standing of approaching 60C?

    What exactly was involved in Laufkötter’s “investigations”. What *did* she *actually* do?
    Chat to her friends and ignore the ones who didn’t agree with her. The folks paying her salary might like to know.
    Apart from: Have Cake And Eat

    Can she explain how the radiations from the GHGE get into the water – *only* El Sol can heat the ocean, either by getting hotter itself or by there being less cloud.
    BUT, the GHGE says there will be *more* cloud.

    Any comment, Laufkötter?

  12. investigating the question of how anthropogenic climate change has been affecting major marine heatwaves in recent decades

    That’s not a question, it’s a declaration of intent. All they have to do is invent a metric that will enhance their silly claims.

    Without ambitious climate goals, marine ecosystems might disappear

    Could, might, may, if etc etc etc are racing certainties in the area of attribution studies that we rational people call The Twilight Zone.

    • Alarmists/Climatista poltroons like the authors of this execrable paper are unable to explain how life on this planet survived millions of years of climate change perfectly well without human intervention.

  13. “Researchers led by Bern-based marine scientist Charlotte Laufkötter have been investigating the question of how anthropogenic climate change has been affecting major marine heatwaves in recent decades.”

    ….. Charlotte knows exactly how to get a grant.

  14. I have been searching and asking for the scientific evidence that supports the claim that a 1.5 part/10,000 part increase in total CO2 over the last 4 decades is the predominant driver of “climate change” and all the associated calamities associated with it. Anyone know where to find it?

    • Precisely.. Its models and simulations and statistics derived from dubious, heavily tampered data.

      Its the epitome of NON-science.

  15. In its investigations, the Bern team studied satellite measurements of the sea surface temperature

    I’m out. As a fellow marine biologist, they should know better. Oceanography 101 is a required course and they KNOW BETTER than to study the surface and make conclusions about the water column.

      • In the Publish-or-perish regime of academia it has never been explicitly expected that the published material actually has to be useful.

  16. They havent said a thing about the cold “blobs” that have replaced them in the last
    5 yrs. In fact I’ve been talking about this change since 2015 and argued that the volume of warm water in the ENSO regions was relatively small and this was the reason the El Niño in 2016 plummeted so precipitously to La Niña conditions at a record pace.

    The neutral conditions that followed and the development of the present La Niña conditions was aided by a new mechanism that saw cold waters from the temperate zones in both N and S hemispheres slanting equatorward from the cold blobs. In other words, ordinary upwelling in the eastern equatorial Pacific had been considerably supplanted by this new source of cold water.

    Look at the Enso page of WUWT. There isnt any real warm water anywhere in the entire SH and certainly scads of cold water in the NH. I predicted a late cool Summer in Canada and another horrifically cold winter. Lilacs were three weeks late this year and commercial Quebec strawberries only arrived about 2wks ago! We had our first frost about 2-3 weeks early in the Ottawa Valley. Snow in Alberta and down into Colorado two weeks ago.

    Why is this hot blob research coming out now and predicting the end of marine ecology!!

  17. Once again I see thermodynamics being ignored. As I have said many times before air has a puny amount of heat versus water. That is air temperatures have little effect on water temperatures. Cloud cover has to be the real reason

    • Yes
      Part of what I do is cooling systems for large electrical apparatus

      A given volume of water moves 24x as much heat as the same volume of air.

      Unfortunately water is water, electricity no likey much

      • Yes. Also the heat content of water vs an equal volume of air at room temperature is about 3000X. So if you transfer heat from air to water you get a miniscule effect

  18. “Major marine heatwaves have become more than 20 times more frequent due to human influence. While they occurred every hundred or thousand years in the pre-industrial age…” As confirmed by data from ancient satellites.

  19. How can “statistical analyses demonstrate human influence”? If the authors are noting increased marine heatwaves in an era of increasing CO2, that’s correlation not causation.

  20. How can any scientist prove that man made this oceanic heat wave happen? It seems that the scientists involved go through the hoops to show how rare this is in our short period of record, but they can’t specifically state how on earth man caused it to happen. In other words, how did man concentrate the heat specifically in this area of the ocean? But somehow they come to the conclusion early on in the article. When the PDO shifts and the Aleutian low becomes stronger than average, will that also be due to humans? If we have the power to so easily cause this to happen, we should have the power to wave a wand and make it go away.

  21. Amazing to see how well the oceans recovered from the significantly warmer temperatures of the Holocene some 6,000 years ago. I wonder how they managed to do it.

  22. “A marine heatwave (ocean heatwave) is an extended period of time in which the water temperature in a particular ocean region is abnormally high. In recent years, heatwaves of this kind have caused considerable changes to the ecosystems in the open seas and at the coast… STATISTICAL ANALYSES DEMONSTRATE HUMAN INFLUENCE.”
    – Laufkötter et al (2020)

    So humanity is responsible? OK… but now Nino34 area SST’s are getting much colder and a La Nina is forming. Nino34 SST’s are a good predictor of future global temperature.

    Is man also responsible for cooling? I know, I know, I predicted global cooling starting circa 2020, way back in year 2002, but must I claim personal responsibility? Does that mean I will be at fault for the increase in Excess Winter Deaths and all the other terrible losses that occur in global cold periods? Saying I am sorry hardly seems adequate. Je suis désolé! I am desolated! It sounds so much better in French. (Tabarnac!)
    (sarc/off)

    Data:
    https://www.ospo.noaa.gov/data/cb/ssta/ssta.daily.current.png
    https://www.tropicaltidbits.com/analysis/ocean/nino34.png

    • Bob Tisdale showed that this kind of warming is formed by eastern Pacific cold upwelling pushing El Niño hot water out the western end, thence to the temperate zones. He made a movie of this circulation. Do oceanographers and climate wroughters not know this? Another eminently retractable study. Is it to complicated to imagine the bulk of heating is in the ITCZ and the theory of “When you push the hot water out with cold, this water has to go somewhere”?

  23. Posted before, simplistic but relevant to this.

    At my lake in south Saskatchewan we had a cool and wet year right up to end of July, rarely above 20c, nevertheless the lake warmed from freezing to ~23c.
    Then we had the most beautiful August in memory, lots of 30c and higher, sunny, no rain
    And yet by end August the lake fell to 16c when we took out docs

    Ie, atmosphere doesn’t warm water, sun height and length of day is all, water cools even with hot air above it
    Duh

  24. Key statements in the above article:
    — “The analysis has shown that in the past 40 years, marine heatwaves have become considerably longer and more pronounced in all of the world’s oceans . . .
    — “In its investigations, the Bern team studied satellite measurements of the sea surface temperature between 1981 and 2017 . . .
    — “The temperatures in the sea usually fluctuate only slightly . . .
    — “Statistical analyses demonstrate human influence . . . Statistical analyses and climate simulations are used to assess the extent to which anthropogenic climate change is responsible for the occurrence of individual extremes in the weather conditions or the climate . . .
    — “According to the findings of the attribution studies, major marine heatwaves have become more than 20 times more frequent due to human influence. While they occurred every hundred or thousand years in the pre-industrial age, depending on the progress of global warming, in the future they are set to become the norm.”

    So, the “researchers” admit they only looked at satellite data for the period of 1981 to 2017. In fact, there were NO satellites capable of measuring/inferring sea surface temperatures prior to 1967 (ref: https://en.wikipedia.org/wiki/Satellite_temperature_measurements ).

    So how did they compare that very limited span of direct scientific measurements of SSTs to equivalent data from the pre-industrial age, or even going back thousands of years prior to that, to support their claim that “major marine heatwaves . . . occurred every hundred or thousand years in the pre-industrial age?

    Well, of course, no such DATA exists, so instead they used “statistical analyses and climate simulations”. What could possible go wrong there . . . GIGO perhaps . . . hidden agenda perhaps?

    Since they obviously have no data to determine what the distribution of global sea surface temperatures was, say, 200 or more years ago, these “researchers” have no credibility in assessing “the extent to which anthropogenic climate change is responsible for the occurrence of individual extremes in the weather conditions or the climate”, let alone in making the idiotic statement “major marine heatwaves have become more than 20 times more frequent due to human influence.”

    Like shooting fish in a barrel.

  25. The mostly-red image in the header is a fake perspective. Try to reproduce it in Google Earth or Google Maps. It heavily exaggerates the size of the warm blob. Long live data manipulation.

  26. Curious G, my thoughts exactly! At first, I had difficulty recognizing the coastline as being anywhere on Earth. Then I recognized the perspective had the Baja California Peninsula at the bottom right and the Aleutian Islands at the top left, with huge perspective distortion of the relative size of Vancouver Island in the middle.

    I have never before seen such a perspective of Earth presented. It was obviously chosen for the exactly the reason you stated . . . to raise alarm over the magnitude and to what areal extent Earth’s oceans have warmed in the satellite era, especially the NE Pacific “Blob”.

    Distorted imagery to accompany distorted “science” . . . it figures.

  27. How deep was the ”deviation of 5.5 degrees” measured?
    Are they saying there was that much deviation at anymore than 10 meters or so?
    What evidence is there that marine life is adversely affected?
    What evidence is there that marine life ”needs a long time” to recover?
    How long is a ”long time”?

    ”Researchers led by Bern-based marine scientist Charlotte Laufkötter have been investigating the question of how anthropogenic climate change has been affecting major marine heatwaves in recent decades.”

    First they need to prove that anthropogenic climate change exists, then they need to quantify it by separating it from natural variation, THEN they might be able to tell us how humans are affecting the temps, THEN they might be able to start to figure out how we are affecting oceanic life…
    Garbage from start to finish.

  28. Loydo, I asked you to explain why the increase in CO2 has had no effect on the “rate” of sea level rise……the rate was exactly the same before global warming and before CO2 ever increased…and after CO2 has increased….it has had no effect on the “rate”….it is exactly the same

  29. Imagine if we didn’t have the likes of Lloydo and his shadow personality Griff come here and entertain us with their ignorance. To be sure, I have an old friend, who I once respected and thought was reasonably intelligent, “guarantee” me that CO2 was warming the Earth and that it had to be cut back and controlled … his son living in California told him so. I find it curios that the bleating that I hear from these types is so consistent, from one to another, like they were all tuned to the same propaganda organ.

  30. Hot seawater associated with marine heatwaves are better explained by submarine volcanism. Recent examples
    of hot blobs supported by records of ARGO data buoys include the 2013-2016 North Pacific Blob, the 2018-2019 Southwest Indian Ocean Blob and the 2019-2020 South Pacific Blob.

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