Aussie Climate Scientist Predicts Rainfall Will Change

Climate Economist At Work

Climate Economist At Work

Guest essay by Eric Worrall

Aussie Climate Scientist Steve Sherwood, Director of the Climate Change Research Centre at the University of New South Wales, thinks in the future Australia will experience more rain, less rain or something in between.

More rain on the horizon as climate change affects Australia, study finds

Australians will need to batten down the hatches with more intense rain storms predicted as a result of higher humidity driven by a rise in global temperatures.

New findings from the ARC Centre of Excellence for Climate System Science, published in Nature Climate Change on Tuesday, reveal that a two-degree rise in average global temperatures would lead to a 10-30 per cent increase in extreme downpours.

The study’s authors predict that while some parts of the continent will become wetter, others will experience increasing drought.

Steve Sherwood, a professor at the Climate Change Research Centre at the University of NSW who contributed to the research, said global warming would have a clear impact on rainfall.

“There is no chance that rainfall in Australia will remain the same as the climate warms,” he said.

“With two degrees of global warming, Australia is stuck with either more aridity, much heavier extreme rains, or some combination of the two.

Read more: http://www.smh.com.au/environment/more-rain-on-the-horizon-as-climate-change-affects-australia-study-finds-20170115-gts0l1.html

The study referenced by the press article;

Future increases in extreme precipitation exceed observed scaling rates

Models and physical reasoning predict that extreme precipitation will increase in a warmer climate due to increased atmospheric humidity. Observational tests using regression analysis have reported a puzzling variety of apparent scaling rates including strong rates in midlatitude locations but weak or negative rates in the tropics. Here we analyse daily extreme precipitation events in several Australian cities to show that temporary local cooling associated with extreme events and associated synoptic conditions reduces these apparent scaling rates, especially in warmer climatic conditions. A regional climate projection ensemble6 for Australia, which implicitly includes these effects, accurately and robustly reproduces the observed apparent scaling throughout the continent for daily precipitation extremes. Projections from the same model show future daily extremes increasing at rates faster than those inferred from observed scaling. The strongest extremes (99.9th percentile events) scale significantly faster than near-surface water vapour, between 5.7–15% °C−1 depending on model details. This scaling rate is highly correlated with the change in water vapour, implying a trade-off between a more arid future climate or one with strong increases in extreme precipitation. These conclusions are likely to generalize to other regions.

Read more: http://www.nature.com/nclimate/journal/vaop/ncurrent/full/nclimate3201.html

Sherwood’s University of New South Wales is also home to Climate researcher Chris Turney, leader of the infamous 2013 Ship of Fools expedition to the Antarctic.

Sadly the full study is paywalled. But from the abstract and Sherwood’s comments to the press, in my opinion Sherwood’s prediction seems unfalsifiable. Almost any imaginable future rainfall observation would fit a prediction of more aridity, more rainfall, or something in between.

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159 thoughts on “Aussie Climate Scientist Predicts Rainfall Will Change

      • ” the ARC Centre of Excellence for Climate System Science,”

        When you have to call yourself “excellent” rather than letting others judge that from your work, it’s pretty clear that you know you are not excellent at all. It signals that you know you are mediocre and the best you can do the change that is some pathetic verbal attempt at self-promotion.

      • It would be difficult to find any results to reproduce, though. Paywalled is a pretty good indicator of junk science.

      • When you have to call yourself “excellent” rather than letting others judge that from your work, it’s pretty clear that you know you are not excellent at all.

        Wait, does that mean that ‘Honest Abe’ down at Honest Abe’s Automotive ISN’T the most honest car dealer in town? But… but… but that’s false advertising!

        Next you’ll be telling me that Politicians don’t have my best interests at heart or that the mainstream media doesn’t report the unvarnished truth.
        ^¿^

      • So, as the climate warms, the atmosphere is capable of holding more ambient moisture…Certainly it would, warmer air can always hold more moisture than colder air. Problem is, those proposed storms would also be warmer and less moisture would Rain Out because their warmer air mass would still want to retain that proposed greater moisture content. So the average rainfall ammounts should still remain relatively constant even whithin the scope of a warmer environment

  1. Proving once again that members of The Cult of Calamitous Climate are beyond parody.
    With an intro like the above,I will not be funding the “paywall”.

    • Following the link to that Sydney Morning Herald story:
      “Professor Sherwood warned that current policies worldwide are not enough to meet the Paris targets.
      The study found that a four per cent rise in global temperature, possible based on current increases in the rate of carbon emissions, would lead to a 22-60 per cent increase in extreme rain storms.”
      A four per cent rise in global mean temperature would be a rise of 11.5 degree Celsius.

      • Sorry Stephen Sherwood, the percentages are wrong. The climate scales in K, not deg.C. The Paris accord is based on changes of 2-4 deg C, which is approximately a 0.15% change in average temperature. Given 10-20 deg. C or more of local daily variability of variability, none of the temperature records have any chance of finding a change in He–that small.

      • @philohippous Thanks for pointing out the most basic bit of 8th grade math+science which seems beyond the ken of many on all sides of these discussions . Only in 0 based scales can ratios be discussed . All of these purported effects are asserted to be caused by near noise level , 0.3% , variations in estimated temperature , only a fraction of even our peri- to ap-helion variation . It’s all utter embarrassingly , determinedly bad nonscience .

    • He says:

      With two degrees of global warming, Australia is stuck with either more aridity, much heavier extreme rains, or some combination of the two.”

      Sherwood, deep in the forest seems pretty safe with that – 2 degrees of global warming seems far enough away from happening to dodge the sheriff of Nottingham makes it hard to see the wood from the trees – maybe long enough to make his getaway from the rope.

      • If the globe warms 2 degrees, by how much will Australia warm?

        What are the predictions, what are the predicted weather fronts?

      • The dry parts will warm more than average.
        The wet parts will warm less than average.
        The average parts will remain average.

    • The good news is, the ones not to be taken seriously have been doing an outstanding job of identifying themselves.

    • Don’t be embarrassed to be an Australian, but you can be embarrassed that the Australian Government is paying money for this crap. When Abbott was in, there was an attempt to clean up this cesspit. That ended when Turnbull pushed him out. I wonder who was behind that little bit of knifework?

    • Don’t be. Governments around the world have been lured into supporting this sort of nonsense. My predictions are that parts of Australia will have prolonged drought, other parts will experience strong storms and heavy rainfall, others will be cold in winter, and other parts hot at times. But, oops, that’s what it always has been like. And Aussies have always coped.

  2. It seems falsifiable to me. I spilled rye and coke on my computer and it says the next hundred years of Australian weather will look just like the last hundred. A few record highs and lows, similar rainfall patterns and same average temps. I’m willing to put some money on my bet if the good professor will do likewise. Plus a bottle of premium Canadian rye whiskey against whatever +2.5 toxins they suspend in water down there.

    • But, on the other hand, it could rain more often, and over a wider area, but do so less intensely.
      He seems to have overlooked that possibility.

  3. Afraid not jorgekafkazar, we have University’s full of them here, mores the pity from a concerned but ageing scientist.

  4. At those Aust sites we have studied, there is usually a stats link between local daily rainfall and temperature that can account for up to 50% of the variance of temperature. Does rainfall drive temperature? Does temperature drive rainfall? Both each other? Neither?
    For examples of the problems, link to see Sydney Observatory http://joannenova.com.au/2017/01/sydney-observatory-where-warming-is-created-by-site-moves-buildings-freeways/

    When Sherwood mentions the words “puzzling variety of climate scaling rates” would that be entirely expected because the data are plainly not fit for the purpose he seeks with erudition more than common sense?

    • Well Geoff, there are a few like me that say pressure drives temperature…and wind moves it about. junk article seems most accurate prediction.
      I was amused by local weather reports that says 50% chance of rain. To me, that meant even chance it will or won’t, but apparently it means half my suburb has 100% chance of rain. Doh?!

  5. Unfalsifiable “scientific” claims are of course pseudoscience.

    This guy Sherwood might as well get out his Tarot cards or Ouiji board and prognosticate about changing climate and rainfall patterns. They’ll give same or better results as his “models and physical reasoning” predictions.

  6. Australian academia is truly blessed with a bunch of first-rate climate ?scientist galahs (my apologies to that particular species of parrot)!

  7. “11% more rain” sounds costly (not!). But almost always the carbon loons have to imply some kind of extreme economic cost to climate change. The alleged future costs are supposed to scare us. But the truth is that if there were any climate costs at all to CO2 those would be minimal, and pale in comparison to the upwards of $1 trillion a year we’re already spending on the leftist scam.

    What about the benefits of CO2, like arguably many trillions of dollars a year in increased agricultural productivity, benefits which far outweigh any future costs by orders of magnitude:

    Tom Nelson @tan123 https://twitter.com/tan123/status/821004381621538817
    .@Maribellasmom No offense, but the notion of CO2-induced starvation is utter #ClimateScamBS:

    • What is the basis for your statement ” arguably many trillions of dollars a year in increased agricultural productivity, benefits which far outweigh any future costs by orders of magnitude.”?

      • I’m sorry, did you miss the graphs, all showing an increase in crop yields as a function of time or are you just invincibly ignorant? Many in fact show a sharp increase in yield growth around 1950, at which time the IPCC claims CO2 production began to affect climate. Live by the assumption, die by the assumption.

      • D. J. Hawkins, nice graphs, and they do show a correlation. As you well know, correlation is not causation. Tell me how you were able to eliminate things like improved irrigation, increased fertilizers, new crop strains and superior weed control from your graphs?

      • You are right in your trade figures, but there is far more to food than merely the income generated from just selling it. I have extracted the food energy per capita per day for developing countries from the FAO data. In 1960 it was 2054 and in 2015 it had climbed to 2980 Kcal/person/day. This huge and welcome increase greatly improved the longevity, health and productivity of the people. Most African countries are now amongst the fastest developing countries on earth – thank goodness – whereas once they were regarded by external agencies as being hopeless basket cases. There are many factors that have contributed to this wonderful development (aid is probably one of the weakest “driver”) but improved CO2 concentration is certainly very important as studies going back many decades have indicated. Plant productivity has been severely limited by CO2 depletion in the past, even in corn fields in the US. Improved food availability has had massive beneficial effects on the developing world. None of these benefits are adequately captured by simple trade figures.

      • DJ Hawkins, first, the trend lines in the graphs are a result of many different factors – increased use of fertilizers, better strains of wheat, etc, increased use of irrigation, better crop techniques (like zero tilling to reduce topsoil erosion). Assigning all of those to CO2 is not valid. Second, as I noted below, the entire agricultural industry globally is $3T, so saying “many trillions of dollars a year in increased agricultural productivity” is not true.

    • I just noticed that 11% more rain bit. If that is what is being promised, then I say bring it on. Australia is a dry country and would benefit from 100% more rain.

  8. “prediction seems unfalsifiable” Maybe, maybe not. I bet someone has already looked into rainfall patterns from the Minoan, Rome warm period and MWP. I know, you don’t have to say it. “But this time it’s different”.

    • Well of course it’s different now. Roman Warm Period Then it was CO2 @ 280 ppm today it is CO2 @ 405 ppm. Then it was 300m people, now 7.3b people so lots of changes

  9. From a scientific perspective I would more trust the words of Dorothea Mackellar’s my country.. ” I love a sunburnt country , a land of sweeping plains, of jagged mountain ranges, of droughts and flooding rains. ”
    I think this pre AGW poem pretty much describes Australia’s climate future and its past.

  10. Okay, no problem,,
    First determine where on the coast these storms will land, the bulldoze the near by mountains as the rains will move into the “outback” (?) then plant. See now I’m a “Climate Scientist” . Do I get a decoder ring or something?

    Oh you guys in Oz do have bulldozers.
    (note, my cousin, she married an Australian so all is fair)

    michael

  11. “The study’s authors predict that while some parts of the continent will become wetter, others will experience increasing drought.”

    Then all we will have to do is ‘geoengineer’ some parts of Australia to bring the water from the wet areas to the dry areas.

    They are called ‘canals’. Problem solved.

  12. Very interesting. At one point it is implied the world would be on average at -18 deg C instead of +18 but for global warming – man made, of course. And the oceans are absorbing heat from the atmosphere. And an extraordinary graph shows an alarming increase in the likelihood of hot days, whereas a cursory glance at the historical data for my locality on BoM website shows no change in the last century and a mean temp rise 2 deg give or take, which is close to there being no significant increase due to man-made activities, although it is only commonsense that some of the rise is caused by mankind. In every interglacial period for the last 800,000 years temperature ice cores (mainly EPICA Dome C, but also Vostok for 450,000 years) show that the rise in temp has preceded increases in CO2. That’s eight cycles. Every glacial period starts when CO2 is at a maximum. The climate so called consensus ( a very unscientific principle) has no explanation for this. We are currently only 15k years after the last glacial period. If the earth was not warming now we would be in serious trouble.
    Globally incidence of extreme weather has not increased in relatively recent times, the earth is visibly greening, crop yields are increasing. This is what has happened since the 1970s when scientists were warning us of dangerous cooling trends. There has been no global warming for about 20 years depending on how it is measured although CO2 has increased. We need to wait 3-5 years now to see whether, after the 2015/16 El Nino, leaves us with steady, increasing or cooling temperatures. All the IPCC models run hot by significant amounts compared with actual data and there is no empirical data showing either that warming is dangerous or that if we stop all man-made emissions it will make any difference – even the IPCC agrees with that. And yet trillions of dollars are poured into research in order prove these obviously wrong models are actually correct. this is not science. It is a belief in magic. money is available only if your aim is to do this.

    I wonder what Australia has done differently from the rest of the world to have this uniquely dangerous postulated climate based on demonstrably incorrect models..

  13. No honest self respecting climate scientist can be specific about Weather except to observe natural cycles and say they will repeat. CO2 Cannot be a forcing Function, but instead is s following function, in concentrations many times what humans contribute. The forcing function cycles big enough to influence Earths climate are on the scale of cosmic disturbances, Solar Disturbances, and Solar system alignments. For an integrated theory on a scale bigger even than ENSO that actually describes observed historic long term cycles, including little and major ice ages, see blog at Paullitely.com, in Particular the blog that begins with “How in the Universe”.

  14. I’d be more interested if he predicted this week’s lotto numbers. My prediction for what it is worth is that for the Australian Powerball draw there will be between 5 and 7 numbers between 0 and 50 from barrel 1 and between 0 and 3 numbers between 0 and 99 drawn from barrel 2.

    I make the above prediction with high confidence because the rules say that 6 numbers will be drawn from barrel 1 and 1 from barrel 2. No data was harmed in the homogenisations used to produce the above predictions.

    Thank me later.

  15. 2 degrees of warming. But aren’t the predictions based on warming since pre-industrial times? So we have already warmed 1 degree – what catastrophes can be attributed to that change? And how much difference will 1 degree make, from an average of 16 to 17 degrees, when we already have parts of the world doing very well with averages of over 20 degrees (like Dallas), and others with averages around 10 degrees (like London).

  16. You bunch of tools.

    I wonder what Australia has done differently from the rest of the world to have this uniquely dangerous postulated climate based on demonstrably incorrect models.

    These “predicted” changes have been obvious for years. The rightly saying they on all the evidence available are likely to change further in these directions – different outcomes in different places

    Take you about 5 minutes of research to show that NOT ALL OF AUSTRALIA IS GOING TO EXPERIENCE THE SAME EFFECTS. IT IS A LARGE CONTINENT.

    Even though that appears to be the single problem that Eric ‘the worlds leading climate scientist’ Worrell has with it.

  17. “… thinks in the future Australia will experience more rain, less rain or something in between.”
    Does he really want to go way out on a limb like that?

  18. Climate models can’t get temperature correct..

    They don’t do precipitation, clouds etc well, if at all

    WTH makes them think they can “predict” changes in rainfall.

    This is LUDICROUS stuff.. extreme propaganda PAP. !!


    A one stage they say “The long-term drying of Australia …blah .. blah “..

    What a load of RUBBISH !!!!

    • The internet is slow at the moment so I can’t find the reference but AR4 does state that the modelling shows that relative humidity * will remain close to the same in a warming world.

      “Australians will need to batten down the hatches with more intense rain storms predicted as a result of higher humidity driven by a rise in global temperatures.” So not only do the predictions cover all possibilities, the models predict no change in relative humidity and a large change if the conclusion calls for it (or maybe its the very wet La Nina year)

      * the percentage of water vapour in the atmosphere might increase but the percentage of the saturated value (which increases with temperature) shouldn’t. Means that the amount of water, on average, that precipitates when hot and humid air hits cold air will be the same as before.

      • It would be a question of whether or not atmospheric processes are driven by relative humidity or absolute humidity. A pound of air at 60°F and 50% relative humidity has fewer grains of moisture (39) than a pound of air at 70°F and 50% relative humidity (55).

      • D.J. “atmospheric processes are driven by relative humidity or absolute humidity”
        Look at the satellite photos of Australia and it’s clear that the Roaring Forties wind and the Ant-Arctic cold drives the Australian weather. Humidity is a local thing and I’m not sure it has much influence at all. Cold fronts are what drive our weather here.

      • Probably not worth getting into. The colder latitudes are meant to warm up more so cold air meeting with warm humid air will result in less cooling and less rain. Only a back of envelope but it does highlight how big a claim it is that warming means more intense rainfalls rather than what would put a smile on aussie faces – more rain.

      • I should add that there is a difference in precipitation in going from 40C at 50% RH to 20C 100% humidity than 42 to 22 (roughly a few %) but because colder regions warm up more, its more likely to be less than even that.

  19. What did he expect? The Profits have foretold a Catastrophic Anthropogenic Climate Change (a.k.a. Catastrophic Anthropogenic Global Warming). Extreme precipitation is consistent with the prophecy.

    • Mate if you visit the Olgas (now called Kata Tjuta) you’re looking at walls of previous water eroded round rocks embedded in sandstone and you’re looking across at the far distant horizon to the Peterman Ranges where they originated from. It’s as sobering to realize your own inconsequence as it is looking at the same encased round rocks in the walls of the Bungle Bungles in the NW of Western Australia. And these precious idiots look at 150 years of thermometer records and get the schoolgirl vapours. They need to get out and about a bit more-
      https://www.ayersrockresort.com.au/uluru-and-kata-tjuta/natural-environment/geology

    • Mind you-
      “The Anangu people know how Uluru and Kata Tjuta were formed. This knowledge comes from the Tjukurpa, the stories and lore that explain and govern Anangu life. But much of it, particularly about Kata Tjuta, is sacred and cannot be presented here.”
      Now where have we heard that sort of storyline before?

    • It is well known that Australia was perfect until modern (European) humans arrive. Before that, the aborigines were “perfectly in tune with their environment”. Ignore the firestick farming that completely changed the face of the continent. So much so that it appears in the paleological record.

      /Sarc

  20. Climate Change Research Centre

    I wonder what a fully entrenched fully funded fully staffed Climate Stability Research Centre would find.

    • Hey, me too. And I actually do work in a research department called centre of excellence. But then, I am a modeller too. What a loser I must be.

  21. I think it was Professor Sherwood’s magic model that succeeded where twenty-eight million weather balloons over 60 years failed in discovering that elusive troposphere ’hot spot’, an identifying fingerprint of strong positive water vapour feedback in the climate system and hence essential for the catastrophic narrative:
    http://joannenova.com.au/2015/05/desperation-who-needs-thermometers-sherwood-finds-missing-hot-spot-with-homogenized-wind-data/

  22. Geological history proves cycles of ice ages and inter-glacial periods.
    Isn’t that very well accepted science? (you could even call it a consensus)

    I would like to ask Steve Sherwood how he reconciles his prediction with geological history and, over what period of time will Australia’s rainfall be “increased”?

    Will it cancel out the next ice age?

    If not, and the earth continues to warm at the current rate of a poofteenth of a degree per year, won’t the humans alive at the time (if any) in the lead up to the ice age, experience a comfortable “cool period” after the hell-fires of predicted warming?

  23. Hi, I’m Aussie Climate Scientist Steve Sherwood, Director of the Climate Change Research Centre at the University of New South Wales. This essay, all of you have been commenting on, is really a test for Saturday Night Live. It looks like I’ve received plenty of positive response to present this study to NBC. Hope you enjoy the production! /SARC

  24. Dr Tim (Ghost Metropolis) Flannery, will have something to say about this…it’s barely 7 years since he was predicting a city destroying ‘permanent drought’….sound familiar?

    • Actually it was back in March 2015 that Tim Blair christened the ridiculous Bob Ellis with the name Nostradumbarse. But it’s a perfectly good nom de pume for Old Flannelpants.

    • there is none , try asking them what would ‘disprove ‘ their claims and they cannot or will not ever answer .

  25. I truly weep for my country and as for the wankers who keep coming up with this garbage ,” the end of your gravy train world is nigh” .
    Just listening to our local news and they were whining about our unusual 40 degree c plus day , the weather presenter then claimed more people die of heat stress than natural disasters .
    I checked and you know what ? More people die from heat stress than winning tattslotto and eating their shoes and choking and walking on railroad tracks and even playing on freeways at peak hour .
    I kid you not check it yourself Tony , unfortunately they didn’t mention more people die from cold related injurys than heat related injurys .

  26. A complete bunch of nongs. They haven’t got a clue. One day we’re going to have a week of rain & 2 days later, after no rain, well the rains been postponed to next week.
    But it’s Climate Change, DOH! I meant Global Warming that’s really causing the problem.
    Hey, this is Australia, let’s not get too serious, after all we’ve got Labour party or dead duck Liberal governments.
    Might as well stooge them all. Let’s squander the kids inheritance on a mirage of windmills and stupid solar panels.

  27. There’s a cartoon line for this one: “Eenie meanie chilli-beanie – the spirits are about to speak” *SMH*

  28. Classic climate ‘science’ heads you lose tails I win ‘ and if ever wanted to know why these people protect their own areas so much , its party because they never get such a easy job anywhere else and no other area of science would touch them given their rubbish standards. So its all in , because otherwise they have nothing .

  29. And what if the temperature does not rise by 2 degrees, but drops instead?

    Another paper, of course!

  30. “A regional climate projection ensemble6 for Australia, which implicitly includes these effects, accurately and robustly reproduces the observed apparent scaling throughout the continent for daily precipitation extremes.”

    I think this illustrates the problem. They build a model, tweak it to replicate what has actually happened, then congratulate themselves that they have build an accurate and robust model.

    I honestly don’t think they see the problem.

    • You misunderstand the problem they were solving. The government had money. They wanted it. Once paper later, problem solved.

  31. My prediction for the coming year is that (fill in the blank) will increase, decrease or be somewhere in between, all on account of climate change. You’re welcome!

    • “There is no chance that rainfall in Australia will remain the same as the climate warms,” he said.

      “With two degrees of global warming, Australia is stuck with either more aridity, much heavier extreme rains, or some combination of the two.”

      What he’s saying isn’t a mere truism. He’s saying that if aridity is avoided, and rainfall occurs at current levels, it’ll be in a less benign way.

      (But maybe, OTOH, rainfall patterns in Australia will become more benign; i.e., maybe there’ll be a moderation of its flood/drought pattern. Who knows?)

  32. The study’s authors predict that while some parts of the continent will become wetter, others will experience increasing drought.

    Weather in Australia used to be like clockwork, there were no extremes whatsoever. Not any more.

  33. I have said it before and I will say it again:
    Simulation is like masturbation – the more you do it, the more you start to believe that it is the real thing.

  34. Nice to know the Aussies have their own version of Bill Nye. After saying CA was going into permanent drought, his tune has now changed to a version of ‘approve Paris accord or CA will drown!’.

  35. You know, honestly, sometimes I wish I’d taken up meteorology. I don’t envy them at all, but there’s just so much work to do in the field. We make fun of them a lot, but they really are on the cutting edge of science. They fall on their asses a lot, but you know what we say; if you aren’t falling down you aren’t skiing hard enough.

    More, less, about the same? That seems to be the best we can do these days. If they weren’t trying to promote themselves as the saviours of humanity, it would be a whole lot easier to welcome them into the ranks of the people who already know they don’t know anything.

  36. I think the Ark of Excrescence for high Clime Cisterns is about to sail on its final voyage into permanent ice under the command of the admiral of the Ship of Fools. Typical of increasingly hysterical end of world papers being uselessly churned out in journals that also feel the cold breath of change on the back of their necks, they have dispensed with any pretence of error bars. Indeed, these are 100% certainty papers (wet, dry, mixed, warm, cool conditions). With an Ark type model you could predict the color of the First Lady’s inauguration ball gown with 100% certainty.

  37. There you see, we indeed have climate change.
    Maybe he should stick his neck in the rope and say where what will happen.
    We have also climate change in Denmark. The other night it was -10C and now it is 0C. It is even visible from my window.

  38. I predict that when the rain does come, it will fall. When it falls, it will fall more lightly or harder. The era of stable, golden-zone, perfectionistic climate is forever gone.

  39. It’s not total humidity that matters, it’s relative humidity.
    If the air is warmer, it will continue to hold onto that extra humidity.

  40. Once again, repeat after me: If your hypothesis contains all possible outcomes you have no null hypothesis to start with. If that’s the case, you aren’t doing science. All you’re producing is hot air.

  41. My prediction for the U.S stock market is that some stocks will go up and some stocks will go down, or there will be some combination of the two. These conclusions are likely to generalize to other regions.

    With a prediction like that, I expect many climate scientists will want to hire me as their stock broker. Others, not so much. When can I pick up my Nobel Prize for economics? If it’s good enough for climate science…

  42. “With two degrees of global warming, Australia is stuck with either more aridity, much heavier extreme rains, or some combination of the two.”

    WOW! The crystalline precision of climatologist Steve Sherwood’s pin point prediction leaves me breathless! Aussies everywhere can be extremely proud of the HUGE return on investment that Steve Sherwood’s Climate Change Research Centre at the University of New South Wales is providing to over burdened Australian taxpayers!!

  43. The ARC Centre of Excellence for Climate System Science just received the prestigious Montgomery Burns Award for Outstanding Achievement in the Field of Excellence

  44. Thermalization of terrestrial EMR absorbed by CO2 and reverse thermalization, nearly all to the plethora of lower energy absorb/emit bands of water vapor, explain why CO2 has no significant effect on climate. Global average increased rainfall is expected as a result of the steady uptrend of global average atmospheric water vapor for at least the last 38 years as reported by NASA/RSS. The data showing the uptrend is graphed at http://globalclimatedrivers2.blogspot.com

    • That’s an ARC Centre of Excellence for Climate System Science clown to you sir and not some common or garden Climate System Science clown.

  45. Has Steve Sherwood finally got the memo ,
    What Will Warming Do?

    Another issue researchers are trying to better understand is how a warmer atmosphere will impact atmospheric rivers — a key consideration for areas that so depend on these features for water.

    Climate models and basic physics suggest that atmospheric rivers will become moister and more intense in the future, as a warmer atmosphere can hold more water vapor (about 4 percent more for every degree 1°F of warming).
    https://www.climatecentral.org/news/global-warming-atmospheric-rivers-18645

    Here are some tools that could be used to steer atmospheric rivers .
    https://en.wikipedia.org/wiki/Naval_Communication_Station_Harold_E._Holt
    https://en.wikipedia.org/wiki/VLF_Transmitter_Woodside

    And the process.
    Transmitter-induced Precipitation of Electron Radiation (TIPER)[edit]

    “In order to cause electron precipitation, transmitters must produce very powerful waves with wavelengths from 10 to 100 km.[3] Naval communication arrays often cause transmitter-induced precipitation of electron radiation (TIPER) because powerful waves are needed to communicate through water. These powerful transmitters are operating at almost all times of the day. Occasionally, these waves will have the exact heading and frequency needed to cause an electron to precipitate from the radiation belt.”
    https://en.wikipedia.org/wiki/Electron_precipitation

  46. As a citizen of the Lucky Country the news just gets better and better. With apologies to Dorothea McKellar:

    “I love a sunburnt country, a land of sweeping plains”

    becomes “I love a slightly sunburnt country, a land with plenty of rains”?

  47. “With two degrees of global warming, Australia is stuck with either more aridity, much heavier extreme rains, or some combination of the two.”

    So if things don’t change they’ll stay the same? This is what passes for “science” these days? And there I thought “settled science” would enable one to make predictions? Oh sorry, he did make a prediction – things will change or they won’t! I could have predicted that with my puny degrees in Computer Science and History. Where do I sign up for the big bucks?

    As for global average temperature; how is that more useful than global average telephone number, pray tell?

  48. As an Australian Tax Payer I shudder to think I am paying Academics for meaningless alarmist nonsense as this by Sherwood. Australia’s climate has always varied for millions of years and will go on being variable regardless of an extra 100 or 200 ppm of CO2 . In my 60 years of life I have seen numerous droughts, heatwaves, cold spells, floods and as I live in Melbourne you can get all of it in one day!! This will go on and on like this even if we stopped every bit of human carbon burning today.
    At present we are not particularly hot for Summer which I am happy about.

  49. FYI Sherwood was very active in trying to deny Monckton access to venues at which he could present his views to the public.

    • Apoxonbothyourhouses
      “FYI Sherwood was very active in trying to deny Monckton access to venues at which he could present his views to the public.”

      Let’s not forget either the appalling and deceitful treatment of Bjorn Lomborg by the University of WA backed by the entire Australian AGW Establishment. Australian climate science is as politicised and corrupt as anywhere in the world. Very glad, though, to see Garth Paltridge, whom I met once many years ago and who explained to me all about Antarctica and the oceans, is now with the GWPF

  50. Sherwood’s “prediction” that “Australia is stuck with either more aridity, much heavier extreme rains, or some combination of the two” is not an example of a “prediction” but rather is an example of an “equivocation.” Unlike a prediction, an equivocation conveys no information.

  51. “Sherwood’s University of New South Wales is also home to Climate researcher Chris Turney, leader of the infamous 2013 Ship of Fools expedition to the Antarctic.

    Sadly the full study is paywalled.”

    Guess why.

    ” But from the abstract and Sherwood’s comments to the press, in my opinion Sherwood’s prediction seems unfalsifiable. Almost any imaginable future rainfall observation would fit a prediction of more aridity, more rainfall, or something in between.”

    Astrology always did a good job because professionals know how to take the people.

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