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ubrew12 at 17:33 PM on 8 August 2023At a glance - The tricks employed by the flawed OISM Petition Project to cast doubt on the scientific consensus on climate change
My Dad signed that petition. He was a Crop Scientist. I'm sure he meant well, but 'damage done'. How hard is it to sign your name? I took two terms of Atmospheric Physics. For a few months I was working to get a PhD in climatology, but I later left to get a Masters in Mechanical Engineering. Did I sign any petitions? Have I signed any since? Because I was lightyears more qualified to do so than my Father, who knew a lot about Plant Genetics, and a little about anything other than Plant Genetics. But, regarding the Scientific opposition to AGW, that has rarely been a disqualifier. As long as you 'wrote the book' on Plant Genetics, then you must certainly know everything there is to know about the subset of GeoPhysics called Atmospheric Science...
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BaerbelW at 02:27 AM on 7 August 2023Extreme weather isn't caused by global warming
Please note: the basic version of this rebuttal has been updated on August 6, 2023 and now includes an "at a glance“ section at the top. To learn more about these updates and how you can help with evaluating their effectiveness, please check out the accompanying blog post @ https://sks.to/at-a-glance
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John Mason at 21:15 PM on 6 August 2023The difference between land surface temperature and surface air temperature
Here's a telling chart: July 2023 would have been warmer than average against 1961-1990 climatology, but against 1991-2020 it was a bit cool:
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John Mason at 16:46 PM on 6 August 2023The difference between land surface temperature and surface air temperature
And according to Trevor Harley, July 1922 was the coldest on record with an average temperature of 13.7C.
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John Mason at 16:29 PM on 6 August 2023The difference between land surface temperature and surface air temperature
also re - #2, I just checked and in the UK, July 2023 had a mean temperature across the month of 14.9C, 0.3C below the average for the period 1991-2020. Ironically, June was the warmest UK June on record with a mean temperature of 15.8C, this being 2.5C higher than average. Note the mich wider margin by which the heat record was broken; July was only a bit sub-par (no record there).
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John Mason at 16:15 PM on 6 August 2023The difference between land surface temperature and surface air temperature
re #2: As Eclectic points out, wildfires have occurred in the geologic record ever since land plants colonised the landmasses. Charcoal horizons in terrestrial sedimentary rocks provide the evidence. Dry lightning is a very obvious cause and is a key causal factor in many parts of the world today.
Vegetation does not spontaneously combust but can become well-primed by prolonged hot rain-free conditions to become an inferno should a fire start from any cause.The UK has certainly had a below-average July but that's because it was stuck on the cold side of the jetstream for much of the month.
Looking back through reanalysis charts, 'Cerberus' was a flabby anticyclone but nevertheless it caused northwards warm air advection from northern Africa, just as UK heatwaves involve warm air advection from southern Europe as a rule, hence the meteorological term, 'Spanish Plume'. In a warming world, the chances of such events causing even hotter conditions are obviously increased.
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PollutionMonster at 15:03 PM on 6 August 2023It's not urgent
Eclectic@40
Thank you I found the quote, would have taken me a very long time to find on my own. I could only find a much lower number before. Going to argue with some deniers now. :)
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citizenschallenge at 13:38 PM on 6 August 2023The Cranky Uncle game can now also be played in Romanian!
Congratulations.
Keep up the good work.
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prove we are smart at 10:35 AM on 6 August 2023Skeptical Science New Research for Week #31 2023
MA Rodger @2,
Thanks for that reply, I agree entirely with your comments and the link you shared was especially informative, cheers Col.
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Eclectic at 10:02 AM on 6 August 2023The difference between land surface temperature and surface air temperature
Davz @2 ,
You have many questions ~ but I would be grateful if you would clarify your second question.
Your second question does not seem to make sense. I assume that you are correct in that the ignition temperature of scrubland materials would be high (for instance, the wood-based material known as paper has an auto-ignition temperature above 200 degreesC ). And climate range does not extend anywhere near 200 degreesC, or even 100 degreesC.
And yet wildfires have occurred throughout pre-history, before humans & hominids, and even well before 1 million years BC. So your "question" presents a paradox ~ wildfires cannot occur naturally . . . and yet wildfires have occurred naturally.
Perhaps the paradox can be resolved by you expressing yourself more logically. Were you perhaps meaning to say that climate favoring hotter drier days would make wildfires worse in extent & intensity . . . which would make sense ~ but that makes nonsense of your second question.
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Davz at 08:04 AM on 6 August 2023The difference between land surface temperature and surface air temperature
could the author kindly explain the role of the anti-cyclone known as Cerberus on the heat wave in southern Europe? Could you also explain how wild fires were started by climate change as spontaneous combustion of scrubland normally takes place at a much higher temperature, temperatures beyond that of the climate, so how can wildfires be attributed to the climate? Can you explain why the temperatures in Europe are now normal and have not been maintained and lastly why has the UK experienced the coldest July on record. Events like these need explanation If they are going to be attributed to global warming.
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Jim Hunt at 08:01 AM on 6 August 2023The difference between land surface temperature and surface air temperature
"People who create and/or circulate such myths are denying plain reality."
There's a lot of it about at the moment John! My own recent article on the creation and circulation of similar myths takes a look at some theory whilst also debunking some specific "skeptical" memes:https://GreatWhiteCon.info/2023/08/the-information-war-with-the-fossil-fuel-industry/
By way of just one example, if you can spot the difference between these two graphs of Arctic sea ice extent you may well wonder why a certain "Steve Goddard" has been continuously blasting the former data at his flock of faithful followers rather than the latter?
Events, dear Tony, events!
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MA Rodger at 04:03 AM on 6 August 2023Skeptical Science New Research for Week #31 2023
prove we are smart @1,
You ask "Is all if this video true?" The answer is 'No'.
It is true that the sulphur emissions from shipping causes cloud formation. But the assertion that the absence of such emissions is the cause of the high 2023 Atlantic SSTs is a difficult one to accept.
The annual June anomaly for such SSTs is plotted here in this Copernicus item on the heat waves, as is the daily year-on-year plot (as seen in the video @0.25). Note that we are not seeing a rise in SST through recent years as we would expect to see resulting from a lowering of sulphur pollution. This is, as the Copernicus item describes, primarily a weather-driven event. The contributions from GHG forcing and pollution are not the the immediate cause of the specacular temperature anomalies.
And the assertion that we could through geoengineering cool the planet and reverse AGW is exceedingly naive. Significant cooling of the planet through geoengineering would come with unintended and very likely unwelcome climatic impacts. A better plan is to put all our efforts into reducing CO2 emissions and after that intentionally removing past emissions.
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prove we are smart at 20:15 PM on 5 August 2023Skeptical Science New Research for Week #31 2023
Just a few questions for the scientists here:
Is all of this video true?
Do ocean vessils create "sea tracks" making clouds that shade out the ocean more than the dust blowing off-shore from the Sahara Desert often does?
Can it be simply done to seed the ocean air with air-blast sea-water droplets when atmospheric conditions are suitable and make clouds bigger to create shade and should it be done? Just wondering..
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Eclectic at 17:55 PM on 4 August 2023It's not urgent
PM @39 ,
Nordhaus's comments are found in the online Washington Post, in an interview with Steven Mufson on 14th June 2021.
About halfway down the rather short interview. To me, Nordhaus seems very reasonable ~ apart from his obliviousness to the vast misery consequent on a 3 or 4 degree warmer world. He also opines that "Carbon Price" would sound much better than "Carbon Tax" . . . so yes, I think he is very aware of the delicate sensibilities of many of his American audience!
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PollutionMonster at 15:49 PM on 4 August 2023It's not urgent
Eclectic @38
You've made some interesting points. One week I really dug in and was arguing for 8 hours + a day with deniers, did not make me happy. Do you have a source for the $100 per ton tax on carbon emissions from Nordhaus? I've searched and searched but could not find. Thank you. -
David-acct at 08:31 AM on 4 August 20232023 SkS Weekly Climate Change & Global Warming News Roundup #30
Nigelj - 44.304% number was the same as yours (though I was rounding ) ..
Thats what I like about cross checking the data in a dispassionate manner against actual source data so the I can honestly evaluate the factual evidence without being swayed by activists talking points.
for example Michael makes mention of Hydro to cover the shortages, though there is no Hydro in the ercot grid, nor is the geography or water storage needs compatable with utilizing hydro.
Michael also makes mention of the battery storage such as being used in the De Cordova plant near grandbury with 260mw battery storage, though that battery storage is only good for 1 hour at full usage. The 260mw is comparable to the plant hourly capacity, so it the plant shuts down, the backup power is only good for 1 hour ( longer if shut down occurs in non peak season) The backup power is used to reduce the peaking power requirement , thus is nearly fully discharged daily during the summer.
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David-acct at 08:15 AM on 4 August 20232023 SkS Weekly Climate Change & Global Warming News Roundup #30
Michael - Nigrelj partially answered your question on how to drill into the EIA data
using the link - right side column "chart options"
Chose frequency - daily or hourly
Date range type - choose custom
Number of days - less than 30 days will provide the hourly - longer than 30 will only display daily
Select balancing authority - click on any grid - ERCOT/ MISO / PJM / SWPP or any other grid.
Hope that helps you learning how to navigate the real time source data.
A baseball player can look at the box score printed in the sports section of the newspaper (on line these days) and tell you what happened every inning. Same thing with the EIA electric generation by source report. Once you learn how to read the source data, you will have a greatly improved grasp of what is actually happening, and far less easily fooled by the activists representations. Hope that helps.
Moderator Response:[DB] Inflammatory snipped. Do better.
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nigelj at 06:55 AM on 4 August 20232023 SkS Weekly Climate Change & Global Warming News Roundup #30
Regarding the ERCOT grid controversy being discussed. I had a look at the EIA page with the interractive graph. I plugged in the Texas ERCOT grid for 28 June - 29 June 2023. (you do this under the select balancing authority / region and then the date selection panel). I discovered you can then hover the arrow over the point on the graph you want and the data appears.
The best case for renewables plus nuclear power was on 28 June (although both days were very similar). I got the following numbers: wind + solar + nuclear 35,562 mwhr and for Gas + coal 43,472 mwhr. This is 44.304 % for wind + solar+ nuclear (using an online percentage calculator that would only let me enter simple numbers 35 and 43 but this is useful enough) so this does seem to roughly confirm David Accts result.
However I'm wary of such things. Im just reading things off a web page. Im not an electrical engineer, and its not clear how the people in the article arrived at their numbers. Although all the raw data seems to be on the EIA page there is the perrenial problem of potentially comparing apples and oranges.
And 44.304% is still a very credible result. And obviously it should be noted that wind and solar are still only a smaller component of the grid relative to fossil fuels.
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michael sweet at 03:52 AM on 4 August 20232023 SkS Weekly Climate Change & Global Warming News Roundup #30
I looked at your EIA link (sorry I missed it before). I could not figure out how to get data for ERCOT from it. I noticed that the lowest times for wind were allways durig the day when the production of solar was high. At night demand is much lower. WIth more wind and solar buildout that should continue to be benificial.
Hydro can be used to generate power at times when wind and solar are low. In the cases you mention, hydro could probably cover most or all of the shortages at night. Since they are also installing battery storage in ERCOT, as well as a lot more solar, they should be covered.
Scientists who study power systems have all come to the conclusion that renewable energy will be able to handle all power all the time with higher reliability than current fossil systems. You are simply making up your own claims without any analysis to support your incorrect conclusions. I have already provided you links to support this claim but you apparently have not read them.
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Philippe Chantreau at 03:00 AM on 4 August 2023Wildfires are not caused by global warming
Bob makes a interesting point above by bringing the difference between grasslands fires and forest fires, and how they play in the decrease of global area burned.
As Bob pointed above, said decrease is pretty much entirely due to the lower area of savannah and grasslands burned. These environments have a long relationship to fire and are very well adapted to it, with grass species in fact relying on it for their life cycle. The carbon cycling from grassland fires is a short term one that has always been present in the background of the natural global carbon cycle. The amount of CO2 released per unit of surface burned is limited, since grasslands store the vast majority of their carbon underground, and quickly regenerate the above ground part that is lost in fires.
Forest fires, especially the ones affecting old growth forest are an entirely different beast. The amount of CO2 generated by unit of surface is much higher for forested lands. Zheng et al (2021) show that the CO2 released by forest fires essentially compensates for the decrease in total area burned provided by the decline in grassland fires. The result is a "quasi stable" amount of CO2 generated by wildfires. It would not be surprising if this changed with more years like this one has been in Canada and Siberia.
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michael sweet at 02:12 AM on 4 August 20232023 SkS Weekly Climate Change & Global Warming News Roundup #30
David-acct:
Can you provide a link to where you say you found data that contradicts the CNN article? A claim without a link is not worth much. I note that even if renewables provided "only " 45% of total electricity that renewable energy was what kept the lights on in Texas the last two months.
SInce renewables have only been the cheapest electricity for about 5 years I would say they are doing great!!
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Eclectic at 14:37 PM on 3 August 2023It's not urgent
PollutionMonster @37 , yes the economist William Nordhaus is an interesting case.
Climate science deniers love him since he seems unconcerned about a 3 or 4 degree rise in global temperature . . . because, in his estimation, the vastly higher temperature will have no adverse effect on "output" (aka Gross Domestic Product ~ GDP being the heart & soul of economists' thinking). And undoubtably Nordhaus is correct in his projections, for we all know that the "dismal science" of economics has an impeccable track record of long-term accuracy . . . and it is also the Be-all & End-all of measurement of human happiness (and of all other aspects of the natural world).
But putting that minor point aside, the Denialists are slightly less happy that Nordhaus has suggested a $100-per-ton tax on carbon emissions ( I am unsure, but presume he means tax on tonnage of CO2 rather than tonnage of elemental carbon emitted ).
As per usual, Denialists feel entitled to cherry-pick from the sayings of any prominent scientist or public figure, in order to support themselves.
For arguing online ~ no, it is not a waste of your time, since your comments will be seen by "undecided" fence-sitters. No, your arguments won't & can't change the minds of the hard-core intransigent Denialists (who are usually political extremists that are basically uninterested in the actual science or the actual happiness of other people). But your activity will encourage decent sensible people.
Only keep arguing so long as you find it fun/entertaining. Refresh yourself with lots of walking & greenery & open skies . . . plus good company and other interests in life. But I am sure you already know that is how Life should be lived.
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PollutionMonster at 12:08 PM on 3 August 2023It's not urgent
I agree that it can be fun entertainment for awhile. Yet, after awhile it just becomes exhausting trying to keep up with a denier constantly changing topics only to repeat as in your example with the anti-vaxx.
MA Rodger said in #27 that it was still nesscary to argue with deniers, do you agree? Or am I wasting my time arguing online?
What about William Nordhaus? Deniers like to reference him. Saying that we should aim for 3.5C change and that 1.5-2C is infeasible if not impossible by 2100. Thank you in advance.
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David-acct at 12:05 PM on 3 August 20232023 SkS Weekly Climate Change & Global Warming News Roundup #30
Below is an except of the statement in the CNN article linked to by michael sweet.
"And as the state struggled through an early heatwave in June, non-fossil fuel power including renewables and nuclear made up 55% of total generation on June 28 and 29 and close to 50% of the power needed during the evening peak, according to statistics from the federal Energy Information Administration."
I Went to the EIA electric generation by source, dialed into the ERCOT grid and compared the actual data against the claimed data in the article ( basic due diligence). At best , Wind solar and Nuclear only got to 45% of total electric generation and they article included Nuclear which is generally not considered a renewable.
As I have previously stated multiple times, cross check the claims against the actual source data to prevent being fooled.
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Eclectic at 08:32 AM on 3 August 2023CO2 effect is saturated
[ If the Moderator will allow a brief off-topic musing, I promise a sort of return in my concluding paragraph. ]
As a complete tyro in the world of probabilistic AI language generative models, I picture ChatGPT as the analogy of a Zillion monkeys tapping away at a Zillion typewriters . . . and eventually (which is actually a millisecond) out comes something speciously good. The product is sometimes Booker Prize standard; sometimes merely quite presentable; sometimes a diamond but deeply flawed when examined closely; and sometimes there is an Einsteinian Pearl of inventiveness (if the reader has the wit to pick it up and run with it). But always, the winning monkey has no real knowledge of what he has produced. Play-It-Again-Sam . . . and a millisecond later, the new winning monkey gives you a somewhat different product. ~In a decade's time, will the current language AI become so refined as to filter out its own fabrications & nonsenses? Probably yes...
On-topic ~ another analogy is the brain of the climate-science-denier, whose Motivated Reasoning (produced by a Zillion monkey neurons) keeps coming out with flawed presentations, in various repetitions. Monkeys, or Dragons?
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Rob Honeycutt at 04:49 AM on 3 August 2023CO2 effect is saturated
I've played around with ChatGPT and found that it has a tendency to make sh*t up. When you push further it will acknowledge that it is merely a natural language generator. It doesn't have the capacity to review and verify the accuracy of its output. It's just very good at sounding authoritative. But, to its credit, it will tell you not to rely on its statements and to engage experts in the field to verify any facts.
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MA Rodger at 22:12 PM on 2 August 2023CO2 effect is saturated
Eclectic @705,
If the jibberish presented @704 is an output from ChatGPT, or some similar machine learning engine, then the technology is being greatly over-hyped.
I don't see that the CO2 absorption/emission spectrum "approaches a blackbody" spectrum at high concentration or density. (Concentration and density seem to be confused in the #704 account.) N2 & O2 are transparent to IR so they have no spectra (although this is indeed "constant over the IR range"). There are more bands of the spectrum absorbed by atmospheric CO2, not just at 15 micron. And up-welling IR is not restricted to "altitudes of only a few hundred meters" as CO2 emits as well as absorbs.
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Eclectic at 19:41 PM on 2 August 2023CO2 effect is saturated
Welcome back, DragonsHeads / DragonHeads / DragonSeed / DragonTeeth... It appears you have enlisted the aid of ChatGPT or Bard or other Artificial Intelligence "large language models", to construct your post #704.
ChatGPT etcetera typically produce a lot of words, with an initial semblance of meaning . . . but on closer examination, the words can often fail to show a true connection with reality ~ and that is the case here. DragonChat, you are spouting nonsense. Come back in 2030, in your seventh iteration ! [ Meanwhile, you might enjoy exercising yourself at the website WattsUpWithThat ;-) ]
Moderator ~ you are too quick on the draw !
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DragonsHead at 19:03 PM on 2 August 2023CO2 effect is saturated
Eclectic and Moderators
If you would quit being so arrogant and ban-happy, you might just learn a little something on subject you are talking about. From your comments, analogies, and "rebuttals" on the CO2 greenhouse effect saturation issue, I would place your knowledge of spectroscopy somewhere between lacking and non-existent! Since all GHGs, including CO2, are trace gases, their spectra are much closer to that of single molecules than blackbodies. As the concentration of such a gas increases, however, the individual spectral lines are broadened into bands. If the density is further increased, those bands eventually overlap each other and are merged into a more or less continuous spectrum. Finally, in the extremely high density limit, the spectrum approaches a blackbody and it actually makes sense to talk about a temperature and pressure of the gas.
Now, the spectra of the main atmospheric gases N2 and O2 can be approximated with blackbody curves since they are of sufficiently high concentration. Also, the absorption coefficients can be regarded as roughly constant over the IR range. This is not the case, however, for CO2 nor any of the GHGs since these are trace gases. For the GHGs, we must determine an absorption coefficient for each spectral band. In the case of CO2, the important band for the GHE is the 2 micron band at a 15 micron wavelength. All other bands are either too weak or too far away from the peak of the upwelling IR spectrum. Therefore, CO2 can affect temperature only by absorbing radiation within this particular band. This is a strong absorption, however, so radiation within this band of the upwelling thermal energy is depleted at altitudes of only a few hundred meters. Above that, CO2 can absorb no more upwelling energy regardless of its concentration. Now, there is still upward-bound thermal energy, but not within the 15 micron band. That energy would most likely be absorbed by H2O vapor or escape to outer space.
Unfortunately, however, every purported rebuttal to CO2 GHE saturation in this Climate Myth page has, one way or another, involved the assumption of a single absorption coefficient for CO2 which applies for the entire IR spectrum. Simply put, this is incorrect and results in gross over-estimations of the amount of heat energy absorbed by CO2.
In summary, your case against CO2 GHE saturation wouldn't stand up under the scrutiny of a good student.
Moderator Response:[PS] You can lead a horse to water...
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Rob Honeycutt at 08:20 AM on 2 August 2023CO2 emissions do not correlate with CO2 concentration
Dave... "If either of you gentlemen (or anyone else) find another error, or any misleading information, on my site, I will be grateful if you bring them to my attention."
I think you don't grasp that there is no reason for anyone to spend any time on your site at all. It is a multi-year Gish gallop. And here, in your posting efforts on SkS, you've demonstrated a stark unwillingness to update or alter your position on many errors pointed out by others.
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Rob Honeycutt at 08:15 AM on 2 August 2023CO2 emissions do not correlate with CO2 concentration
Dave, I did not infer that you were doing it out of a monetary motivation. "Pro bono" would also be a poor selection of words since that generally refers to legal work done for free to benefit people of lower income. Your site is, as far as I can see, merely a non-expert pretending to be an expert and seeking validation in that effort.
Your site could potentially be useful if you would submit to some form of review process by people who are genuine experts in the fields you're commenting on. Short of that you're just promoting misinformation based in your personal ignorances.
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daveburton at 07:30 AM on 2 August 2023CO2 emissions do not correlate with CO2 concentration
Thank you, Eclectic, for bringing the dead Ed Berry link to my attention! If have corrected it. (It appears that he reorganized his site.)
Rob, I guess you didn't notice that my site is not monetized. So "generating traffic" is of no use to me. It's a purely pro bono project. I merely hope that it is useful to someone.
If either of you gentlemen (or anyone else) find another error, or any misleading information, on my site, I will be grateful if you bring them to my attention. Even punctuation or spelling errors will earn my gratitude.My full contact info is on my site, so please contact me directly, if you find an error. I visit this site only sporadically, so if you direct a comment to me here I might not notice it.
Moderator Response:[BL] Empirical evidence here suggests that you are unwilling to follow simple instructions to post where things are on topic, and unwilling to to accept the corrections to errors that you post here.
When you say "if you find an error. I visit this site only sporadically, so if you direct a comment to me here I might not notice it.", this tells us that you are not here to engage in honest discussion. People that comment here are expected to follow the conversation and respond to criticism. As such, your postings are no longer welcome.
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David-acct at 07:18 AM on 2 August 20232023 SkS Weekly Climate Change & Global Warming News Roundup #30
Always a good idea to cross check the story line against the raw source data so that you arent fooled by an activists story line. The raw real time source data from the Energy information administration EIA.gov paints a much more complete picture. See the attached link. One hand, wind and solar contributed considerable electric production to the ercot grid. On the other hand there were two periods starting July 1 lasting approximately 64 hours and a second period starting July 22 lasting approximately 64 hours in which electric production from wind was less than 20% of normal and less than 5% for several hours. These two periods were not confined to ERCOT , but were across nearly the entire north american continent. The MISO grid lost more than 80% electric generation for 9 day period.
It was during those two periods where the grid was at the highest risk of failure and in which the fossil fuel plants prevented the collapse of the grid. Always best to cross check against actual real time source data.
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Eclectic at 23:04 PM on 1 August 2023CO2 effect is saturated
Moderator: Bob, thanks ~ the indications were indeed strong.
While there is some entertainment value in replying to those delusional puppets . . . nevertheless I am quite happy for my own posts (including this) to be deleted from this thread. Maybe after a 24 or 48 hour delay, in order to allow a wider viewing of the shenanigans?
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Eclectic at 19:03 PM on 1 August 2023CO2 effect is saturated
DragonHeads @700 and @701 ,
You are right that the bucket-of-water analogy is ugly & unlikable (IMO).
But you are wrong about the GreenHouse Effect [GHE]. Where do you get the idea that the GHE regarding CO2 is concerned only with the 15 micron IR emission from the surface or near surface [say, at the 2 meter height] ???
Bobhisey [and here I am hoping I am not treading on the toes of Present Company ] is basically & stubbornly clueless about GHE.
The GHE involves the whole planet ~ which includes the full depth of the atmosphere. Energy in & energy out, at the so-called Top Of Atmosphere [TOA]. Unfortunately, the TOA term is a tad misleading (just as is the GHE term) . . . but if you take the trouble to think all these climate concepts through, then it becomes "bleeding obvious" that the scientists are correct.
DragonHeads, please slow yourself down ~ and clarify where you think the atmospheric physicists are wrong. ( And perhaps it might be best to assure sensitive readers that no Sky Dragon Slayers have been harmed in your explanation. )
Moderator Response:[BL] There are strong indications that Dragonheads is yet another sock puppet of a large collection of previously-banned users. As this is a violation of the Comments Policy, this user will not be participating any more.
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DragonHeads at 17:27 PM on 1 August 2023CO2 effect is saturated
Eclectic @442
I'm afraid bobhisey is correct in the statement that no 14-16 micron radiation leaves the earth — at least not from its surface. Due to the strong absorption of such radiation by CO2, the intensity of this band (radiating from the surface) is insignificant at the altitude of orbiting satellites. Therefore, any measurements of these wavelengths taken aboard satellites fall into the category of upper atmospheric and space physics. From what I have read, this radiation from space appears somewhat as a blackbody at temperature 220 deg. K. Anyway, it has nothing to do with the greenhouse effect at lower altitudes.
Moderator Response:[BL} I'm afraid that you make the same basic error that bobhisey and many other people commenting on this thread have made. At least you add the "not from its surface" clause, but you completely ignore the well-known and observed fact that the lower atmosphere that is absorbing IR radiation in those wavelengths is also emitting it in those wavelengths.. as a result, measurements of upwelling IR radiation in those wavelengths always shows a continuous stream, from the surface up to the top of the atmosphere.
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DragonHeads at 16:31 PM on 1 August 2023CO2 effect is saturated
I reviewed your Basic Rebuttal to CO2 greenhouse effect saturation, and believe that the author's analogy with the buckets of water is incomplete and misleading. If I understand this analogy, it is comparing the water with heat energy, the bucket with the atmosphere, and the hole in the bucket corresponds to a path for the heat energy to reach outer space. Finally, the plug for the hole corresponds to the CO2 greenhouse effect. CO2, however, can absorb (or block) IR radiation only within a narrow band at a 15 micron wavelength, which is a small fraction of the total IR energy going into space. In order to complete the analogy, one would need to blow a massive hole in the other side of the bucket to allow for IR energy to escape at other wavelengths.
Moderator Response:[BL] Should you wish to inform yourself (which seems highly unlikely), you should read more about the bucket analogy on this thread.
You may also wish to acquaint yourself with the definition of "analogy". An analogy is not typically expected to be a full model of an entire system - just a simple way of explaining part of it:
analogy
A relationship of resemblance or equivalence between two situations, people, or objects, especially when used as a basis for explanation or extrapolation
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Eclectic at 07:55 AM on 1 August 2023CO2 emissions do not correlate with CO2 concentration
Rob H ~ never would I have thought you had such a cynical streak.
And yes, DaveBurton should self-cancel his website, and start off with a clean sheet, correcting all the errors & misleading information.
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Rob Honeycutt at 07:37 AM on 1 August 2023CO2 emissions do not correlate with CO2 concentration
Somehow I get the sense Dave's merely trying to generate traffic for his website. These posts are starting to border on spam.
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Eclectic at 06:22 AM on 1 August 2023CO2 emissions do not correlate with CO2 concentration
Daveburton @20 ,
thank you for supplying that link < /Skrable2022/ > to some criticisms of the Skrable et al paper. And the criticisms are scathing.
Very evidently, the Skrable paper should have been retracted.
btw, Dave, in the list of links shown at your website, the second-to-last one (to EdBerry) comes up as Page Not Found. #But please do not bother to correct that, since Ed Berry is mostly a complete waste of readers' time.
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daveburton at 00:03 AM on 1 August 2023CO2 emissions do not correlate with CO2 concentration
If anyone doubts that Skrable et al got it wrong, they should read the five published responses to it. They're devastating.
I have the Skrable, Chabot & French paper, as well as the five "comment on" response papers which Health Physics published, Skrable's replies to the responses, Skrable's later letter & paper, a "comments on" response to that one by Dr. David E. Andrews, and Skrable's response to that, all on my site, here:
https://sealevel.info/Skrable2022/My initial motivation for putting the responses on my site was to make them available, to debunk the errors in Skrable's paper, since Health Physics had paywalled all but the first page of each "comment-on" response. (I obtained the responses, in some cases, by contacting their authors.)
Fortunately, Health Physics subsequently un-paywalled them. But it's still handy to have all that material together, in one place.I did notice a small problem with this article. The red trace in Figure 1 is labeled "Total CO2 Emissions (Total amount of CO2 emitted by humans)." But it is not actually the total amount, since it excluldes CO2 from land use changes (forest clearing, swamp draining, etc.).
I don't have a problem with that choice, since fossil carbon emissions are known with reasonable accuracy, and land use change emissions are not. However, a better label for the red trace would be "Total fossil CO2 Emissions (Total amount of CO2 released by burning fossil fuels and making cement)."
Another problem is that the graph appears to end with CDIAC's 2013 emission data. Newer data from multiple sources can be found here:
https://sealevel.info/carbon/ -
Eclectic at 17:58 PM on 31 July 2023It's not urgent
PollutionMonster ~ you being able to argue with 3 Denialists, sounds like it could be fun entertainment for you (provided they come up with halfway-decent points for consideration).
But all too often, the Denialists are like Anti-vaxxers. When you show evidence of enormous benefit of vaccines (and the rareness of adverse effects) . . . then the Anti-vaxxers simply launch into a perpetual cycle of: Fatal side-effects > Mercury poisoning > Autism > Individual freedom > Conspiracy theories > Financial corruption > and back to vaccines causing millions of deaths / millions of cases of gross & permanent sabotage of the human immune system, and so on.
PollutionMonster ~ in over 10 years of searching, I have never come across a valid argument that shows the basic mainstream climate to be wrong. If you yourself encounter a valid scientific argument that shows "it's not urgent we act now on climate change" . . . then this thread here might be a good place to publicize it. (Sadly, all I come across is the vague & half-truthful rhetoric of the occasional person like Dr Judith Curry . . . or the even vaguer & only-slightly-truthful Mr Nicolas Loris of your example above.)
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PollutionMonster at 16:40 PM on 31 July 2023It's not urgent
@34 Electric
Thank you. I am currently arguing with three deniers and got quite overwhelmed. I didn't want to dismiss a legitmate concern and lose crediblity with the interlocutors.
I sometimes go on tilt and cannot process the paragraphs when I am presented with a vague argument. A confusing denier statement can be the most difficult of all.
Loris' part about three decimal points sounded legimate, thank you for debunking this myth.
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John Hartz at 09:36 AM on 31 July 20232023 SkS Weekly Climate Change & Global Warming News Roundup #30
Michael Sweet:
Alas, the reality of renewable energy's performance in Texas is not acknowledged by the far right state elected officials who are beholding to the fossil fuel industry. The following article is illustrative:
Gov. Greg Abbott vows to exclude renewable energy from any revived economic incentive program by Patrick Svitek, The Texas Tribune, Mar 1, 2023
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Bob Loblaw at 05:57 AM on 31 July 2023Wildfires are not caused by global warming
Scott @ 15, 16:
Congratulations. You continue your biased assertions of "extremely misleading". Once again, you really should read the Coments Policy, and tone down the rhetoric.
You continue to cherry pick specific graphs or quotes that do not necessarily imply what you want them to mean.
You continue to fail to discuss the difference between global and regional issues. Your very first reference, to the Royal Society blog post, starts off with the Overview statement (emphasis added):
Fire activity is on the rise in some regions, but when considering the total area burned at the global level, we are still not seeing an overall increase.
In the first paragraph of the article, they quote the author as saying (emphasis added):
So, there is no doubt that, as explained in our paper, fire activity is on the rise in some regions, such as the western side of North America. And very importantly, associated with these regional increases, we are already seeing a rise in fire impacts...
Yet you characterize the blog past solely on the basis of what they say about global biomass burning trends. What else do they say about the recent global decrease they are referring to? The second paragraph, in full:
This may sound counter-intuitive. The global decrease is mostly driven by less fire in savannahs and grasslands, mainly in Africa, but also in South America and Australia. In quantitative terms, fire in those grassy ecosystems account for around 70% of the total global area burnt, so the reduction in fire activity here outweighs the increase in burned area that we are seeing in other parts of the world.
Much of the damage and danger in other areas is associated with forest fires. Burning an acre of forest is not the same as burning an acre of grassland.
Nobody is claiming that global or regional climate is the only factor in fires, so arguing that other factors is present is arguing a strawman. Regardless of the source of ignition, large fires require large amounts of fuel.
...and you continue to ignore the question of what the future holds. That requires a deeper level of understanding than what you have shown here.
Claiming that climate "is the least important factor" is certainly not supported by any of the evidence you provide.
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Scott at 03:12 AM on 31 July 2023Wildfires are not caused by global warming
Eclectic @14 /Bob Loblaw @13
It didn't find those files but here they are:
Southern hemisphere biomass burning
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Scott at 02:48 AM on 31 July 2023Wildfires are not caused by global warming
Eclectic @14 /Bob Loblaw @13 You are correct, I assumed the diagram was from the IPCC, it isn't, and the increase it shows has very little to do with global warming. In that respect it is extremely misleading. The area burnt by wild fires has been decreasing not increasing. You criticised this conclusion as being from 2016 - yet in a 2020 blog post by the Royal Society the authors of the paper were interviewed again to find out whether things have changed since its publication. The answer was basically no. "... when considering the total area burned at the global level, we are still not seeing an overall increase, but rather a decline over the last decades. This has been confirmed in a series of subsequent studies, using data up to 2017 or 2018."
royalsociety.org/blog/2020/10/global-trends-wildfire/From: 'Large Variations in Southern Hemisphere Biomass Burning During the Last 650 Years' Z. Wang,1 J. Chappellaz,2 K. Park,1 J. E. Mak1 (Science Vol 330 17 December 2010)
"These observations and isotope mass balance model results imply that large variations in the degree of biomass burning in the Southern Hemisphere occurred during the last 650 years, with a decrease by about 50% in the 1600s, an increase of about 100% by the late 1800s, and another decrease by about 70% from the late 1800s to present day."
[For some reason images are not showing in the preview but the source is correct]
The same picture is repeated globally. In 'Climate and human influences on global biomass burning over the past two millennia' by J. R. MARLON et al. (Nature Geoscience 1, 697–702; published online: 21 September 2008), they measure sedimentary charcoal records spanning six continents to document trends in both natural and anthropogenic biomass burning for the past two millennia. From this they obtain the following graph - again showing a very clear 20th century decline.
All this begs the question of why there has been such an increase in fires in California.
"Autumn and winter Santa Ana wind (SAW)–driven wildfires play a substantial role in area burned and societal losses in southern California. Temperature during the event and antecedent precipitation in the week or month prior play a minor role in determining area burned. ""Models explained 40 to 50% of area burned, with number of ignitions being the strongest variable. One hundred percent of SAW fires were human caused, and in the past decade, powerline failures have been the dominant cause. Future fire losses can be reduced by greater emphasis on maintenance of utility lines and attention to planning urban growth in ways that reduce the potential for powerline ignitions."
See 'Ignitions explain more than temperature or precipitation in driving Santa Ana wind fires' by Jon E. Keeley et al. Science Advances 21 Jul 2021 Vol 7, Issue 30
In 'Nexus between wildfire, climate change and population growth in California' by Jon E. Keeley and Alexandra D. Syphard (Fremontia vol 47 Issue 2 2020) is a detailed analysis of wildfires in California. A distinction is drawn between fuel dominated and wind dominated fires.
Population increase leading to urban expansion, accompanied by expansion of the electric power grid, increasing the chances of a powerline failure was a significant cause of wildfire. (The 2021 Dixie fire at 389,837 hectares was caused by a tree falling onto a powerline and could have been prevented had the power company acted promptly - see California Department of Forestry and Fire Protection, Investigation Report Case Number: 21CABTU009205-58). General poor maintenance by utilities has caused many wind dominated wildfires.
Fuel-dominated fires are mostly forest fires in lightly populated regions and so tend to result in less property damage. A century of fire suppression has led to a huge accumulation of fuel at ground level. As a result a low intensity surface fire can easily become a high intensity crown fire.
How 100 years of a misguided policy outlawing controlled burns has left California vulnerable to wild fires
www.theguardian.com/us-news/2019/nov/21/wildfire-prescribed-burns-california-native-americansIn conclusion, the total area burnt has been decreasing globally and in California where it has increased this is largely due to misguided policies of forest management and poorly maintained, overloaded power infrastructure. (Urban planning which doesn't adequately address fire hazard doesn't help either). I think linking wildfires to global warming is misguided and likely to backfire when it is revealled to be the least important factor.
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Eclectic at 23:02 PM on 30 July 2023It's not urgent
PollutionMonster @32 & @33 :
It is not very clear what points you wish to discuss re your link to the February 2019 article by a Mr Nicolas Loris. His article seems little more than a half-baked gentle rant (and is published by the Heritage Foundation . . . which is simply a propaganda organization).
Loris's article is rather dated, being from 4.5 years ago, and talks against a (leftist politician's) supposed "Green New Deal" which planned major changes over 10 years. And basically, this "Deal" is non-existent ~ just vaporware on the political stage, with about zero chance of being implemented in the USA.
Loris uses very vague wording about "industrialized" countries reducing CO2 emissions to zero yet having negligible effect on global temperature by 2100. But he simply does not analyse the situation with any care or logic. [By quoting temperature rises to 3 decimal points, he hopes to give the impression of scientific ultra-precision & credibility.]
In short, Loris is wasting the reader's time ~ IMO he aims to produce an impression that our current situation is hopeless and that we all might as well close our eyes to problems . . . and go back to sleep & take no climate action. Pure propaganda ~ not subtle but merely vague.
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michael sweet at 22:56 PM on 30 July 20232023 SkS Weekly Climate Change & Global Warming News Roundup #30
Here is a current article from CNN about wind and solar propping up theTexas grid during the current record heat wave. The old fossil grid wuld have failed again without renewable energy.
