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Comments 43551 to 43600:

43551. Tom Curtis at 16:30 PM on 19 July 2013
       A detailed look at Hansen's 1988 projections
       

       Bob Loblaw @130, you missed the outragious claim that Scenario A was what "actually occurred".  Given that CO2 concentrations, as indeed all other GHG concentrations were still below the Scenario B values in 2010, and the total GHG forcing was less than that in scenario B, such a claim cannot have been honestly made.  It was either made in ignorance of the data, and hence what actually happened, and is dishonest in implicitly claiming that knowledge, or it is more directly dishonest in that the person making the claim knew it to be false when they made it.  As you say, very illuminating.

43552. Bob Loblaw at 14:09 PM on 19 July 2013
       Trenberth on Tracking Earth’s energy: A key to climate variability and change
       

       Phillippe, a 252, a dit tout qu'il faut dire.

       Tom: I expect the "Sage" is a spice, not an IQ. A condiment accompanying large quantities of turkey, which is what his posts are looking like.

       Old Sage: I have spent years measuring the IR radiation you say "looked right" at 45 W/m², and it was obviously wrong to me. I have also spent many years measuring the convective/turbulent energy fluxes you talk about, and you are obviously wrong about those, too. You appear to be the only one your vast misunderstandings aren't obvious to.

       I think Old Sage has gone deep into troll territory. I suggest DNFTT.

43553. Bob Loblaw at 14:00 PM on 19 July 2013
       A detailed look at Hansen's 1988 projections
       

       Wow, that's quite an iulluminating comment, applebloom.

       First, you graph a prediction of surface temperature agains satellite data, which is not a surface temperature. Strike 1.

       Then you use a graph that shifts the prediction up to match a high spike from 1988 in noisy data, to maximize the chance that later data will fall below the prediction. Strike 2.

       Then you provide a graph that looks like it has taken a 100-year IPCC scenario result and treated the value is if it is linear over the period, and claim it's too high. Strike 3.

       Did you apply any skepticism to that source at all? Or did you just accept it hook, line, and sinker?

43554. applebloom at 13:47 PM on 19 July 2013
       A detailed look at Hansen's 1988 projections
       

       Some of your graphics are innacurate. Here is Hansen's model compared to actual temperatures:

        

       IPCC prediction and reality:

        

       Taken from here: https://mises.org/daily/5892/The-Skeptics-Case

43555. vrooomie at 11:25 AM on 19 July 2013
       The Economist Screws Up on the Draft IPCC AR5 Report and Climate Sensitivity
       

       Well-done, Dana: cue the denialati in 3.... 2... 1.....

       I am sure that, as their fallacious assertions get more and more debunked, they are going to get more and more shrill, and more and more nasty. Hang onto your hats, kids.....

43556. Tom Curtis at 11:25 AM on 19 July 2013
       The Economist Screws Up on the Draft IPCC AR5 Report and Climate Sensitivity
       

       The consistency of the comparisons is established quite easilly.  The ratio between the transient climate response (reported in AR5 draft) and the equilibrium climate sensitivy (reported in AR4) is about two thirds.  Thus the values reported in AR4 equate to transient responses of 1.3 to 1.6 C, compared to the 1.3 to 1.7 C reported in the AR5 draft.  The slight difference is to small to matter.

43557. Tom Curtis at 11:12 AM on 19 July 2013
       Debunking New Myths about the 97% Expert Consensus on Human-Caused Global Warming
       

       Ian Forrester @12, thank you.  I had in fact found that interview already, but do not consider it sufficient context.  In particular, von Storch bases his views on a series of model runs he performed at the University of Hamburg.  He does not indicate of the research has been published so that there is, on public record, sufficient information to critically examine his claims.

       He does not indicate whether his results were based on a HadCRUT4 mask, so that it did not include data from rapidly warming Arctic regions that are excluded from HadCRUT4. 

       He does not indicate wether or not the model he used generates ENSO like fluctuations in the Pacific, and so whether or not it incorporates the major source of natural short term variability.  I took the data for the Southern Oscillation Index, inverted it and normalized it to the HadCURT4 temperature record, thus giving a reasonable prediction of what global temperatures would be doing absent any forcing.  The resulting trend was -0.05 C equivalent per decade.  Adjusting the HadCRUT4 data to eliminate that negative trend results in a warming trend of 0.139 C per decade which is statistically significant.  The point here is without accounting for the effects of the ENSO oscilation it is impossible to understand the current "pause" in temperature increases, and no model that does not emulate those oscilations can hope to correctly assess the probability of 15 year "pauses".  

       Nor does he indicate which set of forcings he uses.  For example, the lates GISS forcing data shows a near zero trend in forcings over the early twentieth century, in large part due to a transition from a solar maximum to a solar minimum:

       

       Does the Hamburg model really only show 15 year "pauses" in warming only 2% of the time during periods in which there is a 15 year "pause" in the increase in forcings?  Or have they merely used forcing data that does not accurately reflect actual forcings over the last decade?

       Finally, he does not even indicate whether they defined "stagnation" as zero trend, or a trend statistically indistinguishable from zero.  The current "pause" in temperature increase exhibits the later, but not the former.  If it is defined as the former, he has misrepresented the applicability of his research to the current temperature data.  If the later, again I find it incredible that they would only find a trend of 0.12 C per decade or less just 2% of the time.

       There may be more substance to von Storch's claims than I would credit given the background knowledge I have.  It looks, however, unlikely.  The research may be quite fine and above board, and totally inapplicable because it does not model appropriate conditions.  Or the research may simply be very shoddy, coming up with incredible results.  Or I may have something to learn here.  But until the research is released I do not have enough context to say.

43558. Tom Curtis at 10:41 AM on 19 July 2013
       It's not us
       

       Also responding to acjames @76, expanding on KR's point, arctic and antarctic regions are known to be more sensitive to changes in temperature than tropical regions due to ice and snow albedo feedbacks.  Dr Hansen estimates that the Vostock (and Dome C) ice cores in Antarctica show local temperature changes twice that of the global mean, and Greenland icecores are even more sensitive.  Nevertheless, taking an average the Greenland and Antarctic icecores is not a bad way to determine the general pattern of global temperature changes, if not the magnitude.  It should be noted in doing so that the fact that you are using only two records and both from polar regions (which have greater temperature variability than tropical regions) will mean that you radically over estimate decadal variability in such an average.  A one hundred year smooth of the data would give a better idea.

       If ignoring the impact of the limited number of sites is bad, when using the data to estimate variability, ignoring polar amplification when comparing with the modern temperature record is absurd.  That, however, is exactly what Richard Moore does.  Here is the chart he produces by appending the global mean twentieth century temperatures to the polar means as determined from icecores:

       

       The key point here is that to account for polar amplification, we would need to divide the icecore data by two, or equivalently multiply the global data by two for a plausible comparison.  Even that would probably underestimate the ratio of polar to global temperature changes.  Doing so, however, wold increase twentieth century global temperature equivalence to 1.4 C, well above the highest values from the average ice core data.  Further, the highest points in the icecore data are from short term variability and likely reflect regional variation rather than global variation.  Applying a smooth to the data would make the modern temperatures stand out still further.

       Clearly Moore's argument that modern temperatures are not unusual is fatally flawed.

       His argument that it is not CO2 consists, as near as I can make out, solely in citing Spencer and then pointing out that sourcewatch does not link to any rebutals.  Sourcewatch is, of course, a website solely devoted to listing institutional and financial connections of various sources of information.  It is not part of the ambition of source watch to survey scientific research and rebut particular arguments.  Moore has only looked for rebutals to Spencer's claims were we can be confident he would not find them.  Had he looked at Skeptical Science, however, he would have been more than satisfied.  In particular he would have found a direct rebutal of Spencer's claims about climate sensitivity.  By limiting his search, however, Moore gets to falsely pretend that there is no such rebutal available, avoids the need to rebut the rebutals, and gets the falsely play the ad hominen card as well.  Not a bad return for being, at best, a slovenly researcher. 

       Finally, Moore finishes with a conspiracy theory which is not worth commenting on, but certainly makes an interesting point about his intellectual credibility.

43559. KR at 10:13 AM on 19 July 2013
       Models are unreliable
       

       acjames76 - I have replied on the more appropriate It's not us thread. 

       Moderator Response:

       [TD] Thank you for thread-herding!

43560. newairly at 10:08 AM on 19 July 2013
       Science does inform policy making … sometimes
       

       I believe that there are  hydrocarbon based refrigerants which are very suitable for use in automotive and domestic refrigeration. It is claimed that systems using these are up to 36% more efficient than conventional refrigerants. 8 million refrigerators per year are now produced in Europe using hydrocarbon refrigerant so it is clearly well proven.

       There are other alternatives to HFCs such as CO2. This article from Department of Environment and Water Resources in Australia has interesting comparisons and case studies http://www.environment.gov.au/atmosphere/ozone/publications/pubs/refrigerants-guide.pdf

       In the past there has been a lot of rather hysterical reaction to the use of hydrocarbon refrigerants, especially in cars with some Australian states banning the use on supposed "safety" grounds. They loved to show a Hollywood style car explosion where a car is filled with LPG and exploded.

43561. KR at 10:07 AM on 19 July 2013
       It's not us
       

       acjames76 - Moore has quite a list of denial myths, errors, and cherry-picks in that document. 

       First and foremost, he insists on using regional records (Greenland and Vostok) and treating them as global. This includes the rather silly statement "...that global averages are a very poor indicator of actual conditions in either hemisphere." Which is just silly. Regional data will always have higher variations and noise than hemispheric or global signals - any time you see someone preferring a small regional signal to one for a larger area and arguing about global trends, you are seeing cherry-picking fallacies in action. 

       He also compares against lower tropospheric satellite temperatures shown over a period of less than five years - when about 23-24 years are required to identify statistical trends. 

       Cycles, cycles, cycles - all ignoring the (measured) forcing contributions from anthropogenic greenhouse gases, with armwaving such as "Perhaps the forces have to do with cycles in solar radiation and solar magnetism, or cosmic radiation, or something we haven’t yet identified". 

       He also throws in the "CO2 is a trace gas", the "clouds", and "CO2 is plant food" myths - all contradicted by the evidence. 

       There's plenty more, but in short he's presented a Gish Gallop of nonsense. Not worth the electrons used reading it...

43562. acjames76 at 09:44 AM on 19 July 2013
       Models are unreliable
       

       I have had some conversations with Richard Moore, who says,

       "The warming we have experienced is real, but it is not unusual, it is not alarming, and it bas nothing to do with CO2. What I'm looking for is an intelligent response to my analysis:"

       rkmdocs.blogspot.ie/2010/01/climate-science-observations-vs-models.html

       
       I find it a bit too detailed to get the gist of what he is saying.  Does anyone have the time to comment on it?

        

       Thanks,

       ...Alan James

       alan_james@handshake.ca

43563. Phil at 09:04 AM on 19 July 2013
       Carbon Dioxide's invisibility is what causes global warming
       

       funglestrumpet @22

       Just to be clear:

       The change in dipole-moment during a molecular vibration is a requirement for IR radiation to be absorbed. It has nothing to do with the random direction of the subsequently emitted radiation.

       The fact that a gas will emit radiation in all directions is, I think, intuitively obvious; in that the molecules of a gas are freely and randomly oriented with respect to each other.

43564. funglestrumpet at 07:21 AM on 19 July 2013
       Carbon Dioxide's invisibility is what causes global warming
       

       @20 & 21 Tom Dayton

       Thanks, the two animations plus the accompanying UCAR page are very clear. I guess it was worth hanging in there for a clear explanation, thanks again.

43565. Lanfear at 05:16 AM on 19 July 2013
       Trenberth on Tracking Earth’s energy: A key to climate variability and change
       

       Tom@265

       "The point of all this is that science is interconnected. When you start denying one part of it, you are led inevitably to increasingly inconsistent positions in which you must deny more and more fundamental aspects of science. Pseudo-science is a fools errand, which has not (of course) stopped Old Fool."

       And this is precisely where the pseudoskeptics fail, every, single, time.

       To a rational mind, and a skeptic at that, it is simply mystifying that this simple and basic step of considering the whole, is time after time missed by those who so eagerly appoint themselves as skeptics as they attempt to surplant a part the known science with their own version of reality.

       Take for example the claim that 'warming has stopped'. This requires that both the claim of melting glaciers as well as warming seas are essentially false. And similary the sea rise must also be false, since both the warming and glacial melting are key components to it. A simple denial cascades into fullblown denial of reality as measured.

       The pseudoskeptics should in earnest develop an understanding what it really means when science says that there are 'Multiple sets of independent observations' of both warming, as well as the attribution, as it has been repeatedly also shown in this discussion thread.

       FWIW in each instance above, I only linked to single relevant page. To those readers who still are not impressed by the information of the specific topic: please take a moment, search through the site for related information, then come back. You might otherwise run the risk of argumenting out of ignorance. After all, a skeptic would take the time to actually understand what is proposed before possibly rejecting it.

       And returning to the topic, I also would be very interested in Old Sages alternative explanations to all the disrepancies brought up by various parties as arguments against his claims about the physical properties of CO2. I by no mean claim any expert knowledge of the matter, so it would be very educating to hear what all that 'Physics text books' actually says in relation (and to what extent) to the atmosphere and its components, as (s)he insofar has only brought them up in a non sequitur manner. In the appropriate topic, naturally.

43566. Tom Dayton at 05:04 AM on 19 July 2013
       Carbon Dioxide's invisibility is what causes global warming
       

       There is also an ear-wiggling animation in the Greenhouse Gases section of a UCAR page.

43567. Tom Dayton at 04:51 AM on 19 July 2013
       Carbon Dioxide's invisibility is what causes global warming
       

       funglestrumpet, pages 4 and 5 of the doc I linked for you have diagrams and short text explanations of those diagrams.  Skimming those might give you what you want; skip all the other parts of the doc.  And here is a great animation; note the wiggling of the oxygen atom "ears" around the carbon atom "head."

43568. Ian Forrester at 04:43 AM on 19 July 2013
       Debunking New Myths about the 97% Expert Consensus on Human-Caused Global Warming
       

       Tom and Zen, the quote is from an interview in Der Spiegel.

43569. funglestrumpet at 03:50 AM on 19 July 2013
       Carbon Dioxide's invisibility is what causes global warming
       

       @14,@17 and @18

       Thanks! I did ask for an 'intermediate' level version in my original comment! Your links are way over my head, I am afraid, but thanks all the same. I was just trying to grasp how the infra-red radiation is absorbed by the CO2 molecule and re-radiated in random directions. I did read somewhere that it had something to do with a dipole feature of the CO2 molecule. I now wish I hadn't read it because I have been trying to find a better description of what actually happens without all the math ever since. I have now stopped the search.

43570. MA Rodger at 03:43 AM on 19 July 2013
       Trenberth on Tracking Earth’s energy: A key to climate variability and change
       

       old sage @254.

       So we can agree, it would be silly not to, that conduction does zip to cool planet.

       I am not sure what you mean by "convection - forced and natural." I am only aware of the natural sort acting in the atmosphere. Could you explain what you mean by the term?

       And "bulk transfer"? I assume you mean 'insensible heat', the latent heat transferred by water vapour from the surface and left up in the atmosphere when it rains out. We know the average global annual rainfall is not far from 1,000mm. So we know the average insensible heat transfer will be something like 2.26 Gj/m^2 pa = 72 W/m^2, not at alldissimilar to the 80 W/m^2 proposed by Figure 1 in the post above. It is thus significant but not "vastly important" even if it does feature so prominantly on our TVs.

43571. Tom Curtis at 03:17 AM on 19 July 2013
       Trenberth on Tracking Earth’s energy: A key to climate variability and change
       

       I see that (-snip-)* continues his (-snip-).

       Let's ignore the fact that his central thesis, ie, that CO2 and other components of the atmosphere do not radiate at normal atmospheric temperatures and pressures has been demonstrated to be false by evidence which he has simply ignored.  Let us further ignore the fact that much of the US space program is based on gleaning signals from thermal radiation from the gases that compose the atmosphere, including of course the AMSU units which are used to detect the temperatures at various layers by detecting thermal radiation in the form of microwaves from oxygen or water vapour, further falsifying his claims.  Let us rather look at his theory that convection carries heat from the Earth's surface to the ionosphere.

       This structure of the vertical structure of the atmosphere:

        

       The important point is that the change in temperature with altitude (the lapse rate) in the troposphere is largely determined by convection.  Crucially, convection will not occur if the atmosphere above a parcel of air is warmer than that below it.  Therefore, convection does not occur in the stratosphere.  In fact, it is because of the lack of convection that the stratosphere consists of distince strata of air at different temperatures, and which gives the stratosphere its name.  The important point, however, is that convection simply cannot carry energy any higher in the atmosphere than the tropopause, one tenth of the altitude to which  (-snip-)'s theory requires it to be carried.

       (As a side note, the altitude of the tropopause can be, and has been calculated from first principles on the assumption that at least some atmospheric gases radiate thermal energy. (See Held 1981)  The principle by which this is done can be easilly summarized.  In essence, energy transfer by radiation and energy transfer by convection each generate their own characteristic lapse rates.  The lapse rate generated by convection is essentially constant with altitude.  In contrast, that generated by radiation depends on the average distance travelled by photons before being reabsorbed.  Consequently it becomes smaller (less temperature fall per km of altitude) with greater altitude.  When the radiation induced lapse rate becomes smaller than the convection induced lapse rate, convection ceases to be the most efficient means of transporting energy, and ceases.  Thus the existence of the tropopause proves the existence of thermal radiation emitted by atmospheric gases.)

       Even more troubling for  (-snip-) is the existence of convection at all.  Once the temperature profile associated with convection is established, further convection ceases.  It is only if the air above is further cooled that warm air will continue to rise.  The problem for  (-snip-) in this is that he has no basis for that cooling.  Certainly it is not by convection at the tropopause, which cannot happen.  Therefore it must be by radiation of thermal energy by atmospheric gases.  (-snip-), however, denies that that exists.  This places him in the position of claiming that a heat engine (the general circulation of the atmosphere) exists without a heat sink, a thermodynamic impossibility.

       The point of all this is that science is interconnected.  When you start denying one part of it, you are led inevitably to increasingly inconsistent positions in which you must deny more and more fundamental aspects of science.  Pseudo-science is a fools errand, which has not (of course) stopped (-snip-).

       * I have, of course, no objection to the person who calls himself "Old Sage" being old.  After all, so am I.  I have very serious objection to people giving themselves laudatory titles as internet names.  It is not for any many to call themselves a Sage - that being properly the judgement of others.  That the person calling himself "Old Sage" feels it necessary to call himself a sage shows, first, that he is arrogant, second, that he is foolish, and third, that it is unlikely that people would call him a sage (or sagacious) if he did not adopt it as title.  Given that, I will not call him sage, but will adapt his name to be, at least, honest.

       Moderator Response:

       [DB] Inflammatory snipped.

43572. michael sweet at 03:16 AM on 19 July 2013
       Trenberth on Tracking Earth’s energy: A key to climate variability and change
       

       Old Sage,

       I have not claimed that IR is the only emissions from Earth.  You have pointed out that the thermosphere also emits hgher energy radiation and that is certainly true.  It has nothing to do with the greenhouse effect though so why discuss it here?  Are you suggesting that convection from the stratosphere (-60C) transfers energy to the thermosphere (2000C)?  Please explain this apparent violation of the second law of thermodynamics.  Your continued harping on this line simply demonstrates that you have no understanding of energy transfer in the atmosphere.

       CO2 emits IR due to the black body effect.  This is well known, basic physics.  It can easily be measured with an IR thermometer at home.  Your claim that there might exist a band of energy emissions emitting all the energy abosrbed from the sun into space that has not been discovered yet is simply absurd.  This is a scientific site.  People are expected to support their claims with references to the peer reviewed literature or with well supported calculations. Speculations on undiscovered paths of enormous amounts of energy make you look stupid. 

       Ask questions about what you do not understand and people will help you out.  Assertions of large, undiscovered energy flows will be greeted with derision.

43573. old sage at 02:37 AM on 19 July 2013
       Trenberth on Tracking Earth’s energy: A key to climate variability and change
       

       MA Rodger - yes, an error but not germaine to my proposition. Also I have not said the transfer agent is conduction;  convection - forced and natural - is vastly more important and bulk transfer via weather systems - driven by such energy -we can witness on our TV's.

       I have no problem with the broad range of i/r absorption  by CO2, H2O etc, nor carbon particulates which can absorb visible light. But CO2 gas has no more capacity to emit i/r at atmospheric temperatures than have carbon particulates to emit visible light. In other words, the route in cannot be the same as that out.

       That means heat transported around the globe can only get out via surface radiation from the cool spots where wind water deposit it. I merely posit the existence of an additional route in which the energy is dissipated in a directly emitting electrically active shell which is known to exist as a belt of intensive radiation in the upper atmosphere. I am totally unconviced that ground radiation can do it on its own.

        

43574. Tom Dayton at 02:15 AM on 19 July 2013
       Carbon Dioxide's invisibility is what causes global warming
       

       funglestrumpet, here is an explanation of CO2, dipole moment, and infrared absorption from Illinois State U; see pages 4 and 5.

43575. MA Rodger at 02:03 AM on 19 July 2013
       Trenberth on Tracking Earth’s energy: A key to climate variability and change
       

       old sage @251.

       No. It would be remiss of us to leave it there. You say the effects of conduction "is multiplied at least tenfold by convection and forced convection." But it is also true that ten times nothing is still nothing.

       So what is the conductive element of Earth's cooling. Consider the simplistic model I constructed @249. Acording to Wikipedia, the thermal conductvity of air is 0.025 W/m/ºK. If the planet surface is say 300ºK and the insulation layer is just a tiny tiny 1,000m thick at that conductivity, the cooling from conduction will be 0.0075 W/m^2, an insignificant figure, even if multiplied 10 times, or 100 times.

       Just to emphasis the point, this model would suggest that if conduction entirely cooled the planet, the surface temperature would be 13,000,000ºK, and that is with just 1km depth of insulator.

       This is why Figure 1 in the post above shows, not "hardly a joule from conduction" as you described it in a previous thread, but it shows zero contribution from conduction!

43576. Tom Curtis at 02:03 AM on 19 July 2013
       Debunking New Myths about the 97% Expert Consensus on Human-Caused Global Warming
       

       Zen @10, I prefer to not comment on quotes from climate scientists unless I can see the full quote in context, with a link to the original source.

43577. stonepig at 01:59 AM on 19 July 2013
       2013 SkS Weekly News Roundup #29A
       

       Gee, I am so impressed by the cough up of the CIA...how much can really be gotten with that measily amount anyway...and do they think their sprinkles in the air won't make a worse problem down the line...or maybe it will just make us cold enough to keep the oil coffers overflowing...I don't know...it's like the conspiracy theories are less dangerous than the truth. That's really frightening.

43578. stonepig at 01:44 AM on 19 July 2013
       They didn't change the name from 'global warming' to 'climate change'
       

       Nichol, there are some excellent points about this in "Winds of Change'' by Linden. Also Cullen, and maybe the latest Rolling Stone.

43579. stonepig at 01:40 AM on 19 July 2013
       Over 31,000 scientists signed the OISM Petition Project
       

       I did peruse some Michigan names on this "petition". A couple of the 'good doctors' don't exist. I tracked down one of the veternarians. I would suggest some of you try that...maybe we could find a few more 'weasels.'

43580. Zen at 01:38 AM on 19 July 2013
       Debunking New Myths about the 97% Expert Consensus on Human-Caused Global Warming
       

       Tom - Thanks for the info.

       I was wondering what peolple think about the quote from Von Storch where he states that, if things continue as they are for another 5 years, then climate scientists will have to fundamentally acknowledge there is something wrong with their models?

       I have complained to the BBC about the way Neil conducted the interview; here is a link for anyone who wishes to do the same.

       https://ssl.bbc.co.uk/complaints/forms/?reset=#anchor

43581. Philippe Chantreau at 01:35 AM on 19 July 2013
       Trenberth on Tracking Earth’s energy: A key to climate variability and change
       

       Old Sage "it seemed reasonable at the time so I didn't check."

       And therein lies the problem. Throwing around idea, or numbers, without checking and comparing with what's in the litterature, while displaying ignorance of fundamental principles of the subject a hand; suggesting that all the scientists studying the subject have it wrong and you have it right, all the while making basic mistakes that have to be pointed to your attention by others. Then resorting to possible mechanisms that have never been observed but just have to exist because it would be so satisfying to you personally that they do. And complaining about being invectived when your mistakes and lack of rigor are dissected in no uncertain terms and thrown back at you for what they are. Really, how can you expect to be taken seriously?

       So far, the one with the least constructive attitude on this thread lately has been you. Complaining about other's unconstructive invective is nothing but a way to escape coming to grips with your severe lack of understanding of the subject that you claim others have figured all wrong. I'm unimpressed. Perhaps you should leave it that indeed.

43582. gws at 01:20 AM on 19 July 2013
       Carbon Dioxide's invisibility is what causes global warming
       

       funglestrumpet@13

       If you are interested in the intricacies of the physics, it is taught in undergraduate and graduate classes on physical chemistry, atmospheric physics or radiation, or specifically spectroscopy or quantum mechanics in higher education institutions; thus you will find it described explained in the respective textbooks or online classes. It would be beyond the scope of this website to educate to this detail.

       But yes, you need a permanent or inducible dipole moment to observe an infrared absorption spectrum in a molecule. The dominant atmospheric gases N₂, O₂, and Ar do not have that, thus their apparent IR transparancy.

43583. shoyemore at 00:18 AM on 19 July 2013
       Debunking New Myths about the 97% Expert Consensus on Human-Caused Global Warming
       

       Andrew Neil was once editor of Britain's Sunday Times, with proprietor one Rupert Murdoch. Neil owed his big break to Murdoch, and it was the start of his "distringuished" media career.

       Enough said?

43584. Tom Dayton at 00:09 AM on 19 July 2013
       Murry Salby's Correlation Conundrum
       

       Murray Salby recently was not continued in his position at an Australian university, for reasons having nothing to do with his bad science.  DeSmogBlog now reports that several years ago Salby was banned from getting further funding from the U.S. National Science Foundation, for non-science reasons.  The reasons include not reporting financial conflicts of interest (I'm shocked!).

43585. Tom Curtis at 00:07 AM on 19 July 2013
       2013 SkS Weekly News Roundup #29A
       

       chriskoz @2, Kevin Rudd's promise is to seek to ammend the current legislation so that the date of the first "flexible charge year" under the legislation will by the year commencing July 1st, 1914 rather than that commencing July 1st 2015.  That will turn the carbon price in Australia from a carbon tax to an emissions trading scheme.

       Given that bandwidth in the electromagnetic spectrum is auctioned of in Australia, and that is not considered a tax because purchasing bandwidth in the auction is a voluntary act, and a property right is recieved for the payment, then an ETS is also not a tax.  Tony Abbot (the leader of the opposition) insists that an ETS is a tax, but to do so he must redefine "tax" to mean any revenue source for a government which is absurd.

43586. old sage at 00:01 AM on 19 July 2013
       Trenberth on Tracking Earth’s energy: A key to climate variability and change
       

       MA Rodger  mea culpa, calculation was and is nearer 450 -  it seemed reasonable at the time so I didn't check.  Your reference to thermal conductivity was covered way back somewhere. It is multiplied at least tenfold by convection and forced convection. Every engine I know, whether it is air cooled or water cooled uses the same heat dissipation by physical movement of energy; to deny it occurs in the atmosphere is simply perverse when we see it in our daily lives and displayed on our TV screens all the time.

       I have no problem whatsoever with the absorption bands of any of the GG's which are bang up there in the i/r spectrum. Nor the extra absorption for that matter of carbon particulates which absorb all light. They add to atmospheric warming. I merely question the route out for all this energy. The same one in - absorption - is not available going out. e.g carbon black will not radiate visible light neither will CO2 gas radiate i/r from molecular agitation. You could argue that heat transported to earthly sinks warms them and increases the outgoing radiation by quasi BB methods (sufficiently, without man's intervention).  I merely propose that there is an unexplored radiation belt where a supplementary exit is provided and there are good reasons for believing it to be of account.

       Now I suggest we leave it at that, I can't be doing with unconstructive invective.

43587. Composer99 at 23:28 PM on 18 July 2013
       2013 SkS Weekly News Roundup #29A
       

       The Quinteros & Wiens 2013 paper mentioned in "Climate change outpaces evolution" is not exactly inspiring news.

43588. chriskoz at 23:22 PM on 18 July 2013
       2013 SkS Weekly News Roundup #29A
       

       How is the title of the first article "Australian leader scraps tax on carbon emissions" possible when in fact Kevin Rudd anounced that carbon tax will be "scrapped" (mor precisely replaced with ETS) in the middle of 2014.

       Isn't the title doubly misleading (by distorting the timeline and by omission of ETS)? BTW, I have an impression that the anouncement is mainly a form of pork-barreling the denialist voters (who are more likely to support the opposing party) and may still change before 2014. Certainly it will change if the opposition wins the elections later this year.

       Or perhaps I'm wrong on my assessment aboce: perhaps this is an official gov decision & confirmed & bound to happen in said date, no matter which party wins the elections behorehand? Whoever understands AUS politics better than I do, please explain.

       Moderator Response:

       [JH] Generally speaking, headlines are meant to grab the reader's attention and do not necessarily convey completely accurate information. 

43589. Composer99 at 22:35 PM on 18 July 2013
       Trenberth on Tracking Earth’s energy: A key to climate variability and change
       

       Well, I'm done directly responding to old sage; it's a waste of time.

       But I should like to draw attention to old sage's blatant misrepresentation of michael sweet.

       In comment #244, old sage suggests

       Anyway, I take it you folks all believe there is absolutely no radiation from earth other than i/r.

       When pressed for a direct, explicit quote, the best old sage can do is suggest that michael sweet, in comment #245, "pretty well claims just that". So, no direct quote explicitly stating what old sage asserts, just an insinuation. Further, old sage apparently can't be bothered looking upthread, before his comment #244, to support his claims.

       However, the closest michael sweet comes to anything like old sage's claim is:

       You keep making comments about the ionosphere. Everyone else knows that the ionosphere has no relationship to the surface temperature. This is a comment that is usually called "not even wrong" because it is so far off base. That is why no-one has responded to your points. The surface heat budget is all radiated from the top of the stratosphere in the IR spectrum. This is basic black body physics. If you do not understand why the ionosphere does not affect the surface either read your textbook or ask a question to clear up your misconception. [Emphasis original.]

       Nothing michael sweet writes in this paragraph can remotely be construed as claiming "there is absolutely no radiation from earth other than i/r", at least not by any observer reading what he actually wrote.

43590. Ubiquitous Che at 21:15 PM on 18 July 2013
       Carbon Dioxide's invisibility is what causes global warming
       

       @villabolo

       In fairness, the sourness of carbonated water is H2CO3 in aqueous solution, not gaseous CO2.
       
       Otherwise though I'm right there with you. :P

43591. michael sweet at 21:03 PM on 18 July 2013
       Patrick Michaels: Cato's Climate Expert Has History Of Getting It Wrong
       

       Tom,

       I am not much of a betting man.  I see your point that the IPCC projections are that you should measure a temperature increase at the 95% level after 25 years.  If you like to bet, it would be a good bet to make.

       On the other hand, Michaels publicly claims that the temperature rise has stopped.  In this bet he is claiming the temperature has not risen when there is a 90% or greater (as long as it  is less than 95%) probability that the temperature has risen.  If you just look at the data the slope is always positive. In the peer reviewed data scientists prefer a 95% confidence to make a claim.  In common speach when there is a 90% chance of something not being chance you would say it is happening.  Michaels is making the opposite claim, ie that if it is not 95% significant there is no rise.  That is a false claim.

       To me, if Michaels is only willing to bet on a cherry picked date and he wins at 93% confidence, that means he is convinced the temperature is rising and will continue to rise.

43592. MA Rodger at 20:47 PM on 18 July 2013
       Trenberth on Tracking Earth’s energy: A key to climate variability and change
       

       old sage.

       You have yet to explain how you obtained the 56 w/m^2 @223. It is a trivial calculation using Stephan's Law, which is the furmula you say @ 231

       you used. You show yourself here as somebody who cannot even honestly perform simple arithmetical calculations but would rather talk nonsense about holding a hand out on a high mountain. Is a hand an appropriate measurement device? Especially given all the radiation whizzing about in all directions? But them you deny the existence of that radiation!

       And, old sage, while you are about re-calculating the radiation from a body at 300K, perhaps you could also do another trivial back-of-the-fag-packet calculation. You are so wedded to conductivity as a means of energy distribution. So if the globe with a temperature 300K were surrounded by a solid with the same thermal conductivity as air (at STP), how large will the energy flux of conduction be? Consider this 'solid' atmosphere has constant properties with altitude. Call it 8km deep. Call it 1km deep if you like. Can you provide an honest answer here?

43593. John Brookes at 20:41 PM on 18 July 2013
       Debunking New Myths about the 97% Expert Consensus on Human-Caused Global Warming
       

       But Neil has repeated the "skeptic" mantra of climate science being "discredited".  The people who want to believe this will accept it uncritically.  Some members of the the public will be influenced as well.

       But the "skeptics" continued bleating will in the end discredit them.

43594. sylas at 20:17 PM on 18 July 2013
       Carbon Dioxide's invisibility is what causes global warming
       

       Tom, thanks very much. I've learned something. Muzz, sorry for introducing confusion to the thread.

       Given your lead I've looked further and indeed (for example) the Australian carbon pricing system does include emissions of Nitrous Oxide (NO2); this is also an important secondary greenhouse gas emission from conventional fuels, and has no carbon involved.

43595. Dikran Marsupial at 18:54 PM on 18 July 2013
       Carbon Dioxide's invisibility is what causes global warming
       

       funglestrumpet - my post wasn't a detailed explanation, just an appeal for the discussion not to be distracted by quibbles over terminology that obstruct the discussion.  The mere fact that molecules such as CO2 can absorb outbound IR radiation is only one element of the explanation of the greenhouse effect, it is the way this affects the radiation of IR into space from the upper atmosphere that is the key to understanding the mechanism.

43596. old sage at 18:46 PM on 18 July 2013
       Trenberth on Tracking Earth’s energy: A key to climate variability and change
       

       C99 - look next but one comment above yours, it pretty well claims just that.

       Also, for the benefit of others, whether something is true or not very often depends on other factors. The emission spectrum of CO2 for example - and my authorities are impeccable - will differ when it is in solution in a raindrop, as in a cloud.

       Some of you I expect have invested a lot of time and energy in mapping radiation but meanwhile all the heat generated by man is getting dumped in the ice and waters courtesy of kinetic transfer.  When I see formula one engineers changing their cooling arrangements depending on cloud cover I might believe it were otherwise but in the meantime, imv heat transfer by radiation is pretty feeble under atmospheric conditions compared with kinetic. 

       Fresher level physics(?), you're right there someone above - moving charged particles in a magnetic field generate e/m radiation.

        

43597. funglestrumpet at 18:39 PM on 18 July 2013
       Carbon Dioxide's invisibility is what causes global warming
       

       Dikan Marsupial@5

       Thanks for the detailed explanation. I notice no mention of something called dipoles, which I thought had something to do with how CO2 traps, sorry, 'absorbs' (or whatever) the longwave (re)radiation. I suppose it is around that dipole - whatever it is - where my ignorance about how global warming happens actually resides. (Perhaps it is the engineer in me that feeds my desire to know the nuts and bolts of the issue. I doubt I am alone.)

43598. Aristarchus at 16:52 PM on 18 July 2013
       2013 SkS Weekly News Roundup #29A
       

       The link to the article "Models point to rapid sea-level rise from climate change" contains errors.

       Moderator Response:

       [JH] Link fixed. Thank you for bringing this glitch to our attention. 

43599. robert_13 at 15:37 PM on 18 July 2013
       It's not us
       

       @Julian Flood

       Suppose we have a sink into which the faucet is pouring water.We have control of the faucet and can increase or decrease its rate of flow. We may not have the political will to do that, but that's a side issue. The point here is that we can. Now let's say that some natural forces are pouring vinegar, pee, alcohol, orange juice, and milk into the sink at the same time our water is pouring in from the faucet. 

       If the water level in the sink is rising at only 45% percent of the rate we would expect from the rate of our input from the faucet, why do you think our lack of knowledge of exactly how much of each of the other inputs and our resulting inability to calculate the sum of their effects is important for understanding whether our faucet is causing the water level to rise?

       If the rate of increase in the level of water is 45% of the rate we would expect from our input from the faucet, we know with absolute certainty that that 55% of our water is going down the drain and all the other inputs with it as well. I don't understand what is so hard to understand about that? Why do you think there is any need for detailed knowledge about the rest of what's going down the drain?

       Now, there is a very significant implication in this. If we know how much CO(2) we're putting out and how much is showing up in the atmosphere (~45% of our input), where is the rest of that CO(2) going? The only reasonable explanation is that the ocean is sequestering the vast majority of it. We do know that the CO(2) level in solution in the ocean has been increasing and ocean water is becoming more acidic. We are also seeing the effects of this on coral reefs and other marine life. As the globe becomes warmer, CO(2) becomes less solube in water, so the 45% figure is bound to go up and accelerate an already undesirabe situation.

       So I don't see where your doubts are coming from unless you just don't want to see and are willing to pick at any single little corner you can find, one at a time and out of context with the bigger picture, simply to avoid seeing.

43600. Tom Curtis at 14:03 PM on 18 July 2013
       Patrick Michaels: Cato's Climate Expert Has History Of Getting It Wrong
       

       michael sweet @47,

       First, I have just noticed that I accidentally dropped a decimal place from the standard errors of the 25 year trends in my preceding post, which should have been 0.069 C and 0.07 C.

       Second, here are the AR4 short term predictions:

       

       You will notice that the "commitment" prediction matches the 1998 observations, but that all other predictions are for temperatures 0.3 C above 1998 values, or higher.  If the IPCC is anywhere near accurate, 1998 values should be routinely exceeded by 2020, and I suspect will be routinely eceeded from 2015 forward.  By 2023, the termination of the bet, even very strong La Ninas will be hotter than the 1998 El Nino.

       Put another, way, if the IPCC is correct, then the trend to 2023 has only a 2.5% chance of being less than 0.13 C per decade.  Using the 1997 El Nino as a start point increases that chance, but not enough to bring the lower 95% confidence interval below 0.07 C per decade.  Michaels bet accurately represents the claim of 25 years without warming (if we ignore the cherry picked start point).  Not taking it if you are prone to bet would reflect a lack of confidence in the IPCC predictions.

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