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All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.

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Comments 32951 to 33000:

  1. One Planet Only Forever at 13:32 PM on 8 November 2014
    New study questions the accuracy of satellite atmospheric temperature estimates

    My mistake in failing to fully revise my presentation to the duration of the trend in the satellite data set being 6 years rather than 7.

  2. One Planet Only Forever at 13:29 PM on 8 November 2014
    New study questions the accuracy of satellite atmospheric temperature estimates

    Better understanding the differences between the trends of very different evaluations is important. But inconsistencies of trends of short-term averages in the different methods would not prove either is wrong. It may only indicate that different short term factors have a different effect on each measurement.

    It could be found that in spite of the eventually understood reasons for the differences both methods produce comparable trends of the averages of longer durations of measurement like a 360 month rolling average. However, the satellite record developed by Spencer is only 36 years long. The Spencer satellite data would only be able to present 6 years of such an average (1979-2008, through 1985-2014). But it is fairly obvious that the trend through those 7 years would be clearly increasing since the 13 month averages on Spencer's graph since 2008 have been warmer than the values before 1985. A simplistic evaluation of this 7 year trend would be:

    • the average of values from 2009-2014 is ~ +0.2 C
    • the average of values from 1979-1984 is ~ -0.1 C
    • therefore the sum of the last 30 year period would be 6x0.3=1.8 degrees C higher than the first 30 years.
    • the average of the last 30 years would be about 0.06 C warmer than the first, for a trend of 0.10 C per decade. This is similar to the value in the surface temperature sets over the same period.

    Therefore, until there is a significantly longer record of satellite data there is little justification for claims that the satellite record is more accurate and that the surface temperature data is incorrect. Also, there is little justification for a claim that we need to wait until that longer satellite record is established.

  3. 2014 SkS Weekly News Roundup #45B

    [JH] Moderator's Comment

    Ashton:

    Please note that posting comments here at SkS is a privilege, not a right. This privilege can and will be rescinded if the posting individual continues to treat adherence to the Comments Policy as optional, rather than the mandatory condition of participating in this online forum.

    Moderating this site is a tiresome chore, particularly when commentators repeatedly submit offensive or off-topic posts. We really appreciate people's cooperation in abiding by the Comments Policy, which is largely responsible for the quality of this site.

    Finally, please understand that moderation policies are not open for discussion. If you find yourself incapable of abiding by these common set of rules that everyone else observes, then a change of venues is in the offing.

    Please take the time to review the policy and ensure future comments are in full compliance with it. Thanks for your understanding and compliance in this matter.

  4. 2014 SkS Weekly News Roundup #45B

    Ashton @19, I try to interpret you accurately, but when you write things such as, " If you say so but that reply from will would allow the real nit pickers into the action pointing out that a lot less than 97% of meteorologists and engineers and geologists do not agree with AGW", it is hard.

    For example, did you really mean the nit pickers are arguing from the fact that there is not a 97% consensus against AGW among meteorologists, engineers and geologists?  That, certainly, is what you literally indicated.

    In addition to having to compensate for you inability to follow the simple logic of negation, I also need to compensate when interpreting you for your known rhetorical strategies.  In particular, your basic rhetorical strategy is to point out that x% if the population is not convinced that AGW is real (or not convinced enough to take appropriate action), and give that as a reason to not in fact take action on AGW.  There beliefs are presented not as reasons to persuade them to the contrary, but as reasons to accept their conclusions because it is futile to do otherwise.

    Applying that rhetorical strategy to your comments about the nitpickers, we can only conclude that you not only think the nitpickers are correct on the irrelevant technical point, but that that by itself is sufficient to make their point stand.

    In other words, if you have a problem with how I interpret your words, I will stop interpreting your words as those of a troll when you stop trolling.

  5. New study questions the accuracy of satellite atmospheric temperature estimates

    Ricardo K @2, as one of the two original developers of the satellite temperature series, and co-author of the oldest and most cited satellite temperature series, Spencer is well qualified to talk on this issue.  This is one of the few occasions where including his views does not constitute false balance (despite his known biases).

  6. 2014 SkS Weekly News Roundup #45B

    No Tom Curtis I don't cling to anything as I am able to rationaliise and dissect arguments from a variety of different sources.  What I don't do is twist the words of others as I am able,usually. to comprehend what they mean.  You, not for the first time have twisted my words to suit your ownends.  The point I was making was that will was incorrect in saying 97 % of scientists etc  rather than 97% of climate scientists.  That is fact as you with your 18% comment above have confirmed.  So please Tom Curtis if you must vilify those that think a little more deeply than you appear to be able to do, make sure you understand what they are saying.  Your comment re medical issues from geologists shows your complete inability to follow the point I was making to will.  And why fellow sceptics?  Are you irritated that anyone who doesn't slavishly follow your viewpoint must ipso facto be a sceptic.  Exaclty what Tom Curtis in my reply to Will indicated personal scepticism?  Moderator the ad hominem rules are very flexible for some and a lot less so for others.

    Phil no idea what a Daily Mail reader thinks like although you obviously do as the people I mix with read the Guardian not the Daily Mail.  Perhaps you should cultivate a few such acquaintances.

     

    Composer  read this http://environment.yale.edu/climate-communication/article/Climate-Beliefs-April-2013.  This is the opening paragraph

    "Nearly two in three Americans (63%) believe global warming is happening. Relatively few – only 16 percent – believe it is not. However, since Fall 2012, the percentage of Americans who believe global warming is happening has dropped 7 points to 63%, likely influenced by the relatively cold winter of 2012-13 in the United States and an unusually cold March just before the survey was conducted. - See more at: http://environment.yale.edu/climate-communication/article/Climate-Beliefs-April-2013#sthash.E0vqVmrx.dpuf

    Moderator Response:

    [JH] You are very close to relinquishing your privilege to post comments on this webiste.

  7. New study questions the accuracy of satellite atmospheric temperature estimates

    Why is it that the Grauniad's only 'expert' commentator is Roy Spencer of the Heartland Institute? He thinks the globe is cooling and CO2 is good for the economy. His 2011 paper on climate sensitivity was so bad that the editor who published it called it "fundamentally flawed" and resigned. It's like asking Bernie Madoff to comment on legislation to prevent tax fraud.

  8. Looking after the right forests benefits the climate

    wili @4, for off topic but related comments, it is generally easy to find an article on Sks where they are on topic, make the post there and link back on the thread which initially started the thoughts.  If all else fails, almost everything is on topic in the weekly digest posts (not the news digests).

  9. Ocean acidification isn't serious

    dvaytw @61, that is a simple question requires a moderately complicated answer.

    The most fundamental point is that ocean acidity is controlled not only be pCO2 concentrations, but also by Calcium ion concentrations.  A high dissolved CO2 concentration can be largely offset by a high Calcium ion concentration.  Calcium is introduced to the ocean by the weathering of rocks, both by rain and plant activity.  Both of those increase in a warm (high CO2) world so that a natural tendency to equilibrium exists.  The result is that even in the eras of highest CO2 concentration over the past 500 million years, ocean pH has not fallen below 7.4 (Zeebe 2012, see figure 5).  Past increases in CO2 concentration have been very slow in comparison to the modern anthropogenic increase, allowing ocean chemistry to adjust and restrict the resulting rise in ocean acidity.  Because the modern increase is so fast, however, the calcium buffer is being exhausted, allowing a far higher ocean acidity relative to atmospheric CO2 concentration than has been the case in the past.

    Second, it is not expected that increased ocean acidity will kill all corals.  In particular, soft corals are not directly effected by ocean acidification, and can be expected to flourish (as will other related animals such as sea anenomes as jelly fish).  Given high ocean acidity, hard bodied (ie, reef building) corals may revert to soft bodied forms and potentially survive in that way.  The consequence of this, however, is that the reefs themselves will decay and be destroyed.  The reefs form the basis of major ecosystems, and if they are destroyed most of the reef fishes will find themselves without habitat (including many of the newly soft bodied corals).  The consequence will be that many of the reef species will go extinct, and those that survive will do so by adopting a non-reef mode of life - becoming much rarer than is currently the case.  The human impact will be a reduction of the shelter provided to tropical shores by reefs, and a great reduction in tropical fisheries.

    Third, as CBDunkerson points out, modern corals (scleractinia) have only existed for the last 220 million years, and missed the periods of very high CO2 levels in the past.  Indeed, the leading explanation for the supplanting of previous reef building corals is that soft bodied ancestors of modern corals survived, where their hard bodied rivals did not, during the very high CO2 episode of the Permian extenction, and then evolved in to the thus vacated ecological niche.  Since then, hard bodied forms of scleractia (and the reefs they produce) have disappeared several times in periods of high CO2 concentrations, ony to reappear several million years later.  That several million year delay suggests to me that the scleractia have had to reevolve the reef building habit, ie, that the survivors were not the reef builders of the period but their soft bodied cousins.  In any event, the last reappearance was 40 million years ago, when ocean acidity dropped to levels lower than can be expected from BAU over the next two the three hundred years (or one hundred if we are determined). 

  10. 2014 SkS Weekly News Roundup #45B

    MA Rodger @17, geologists, whether they work for oil companies or not, are scientists.

    The fact is that Ashton's pedantary is both correct and revealing.  Only about 82% of all scientists (Doran and Zimmerman 2009).  That rises to 97.4% if you restrict the categories to climatologists who actively publish on climatology.

    It is revealing, however, that Ashton and his fellow "skeptics" cling to the straw of just 18% disagreement with the IPCC, and that from scientists who are not expert in the topic underconsideration.  As if they would get a second opinion on a medical issue from geologists.

  11. 2014 SkS Weekly News Roundup #45B

    Ashton @14.

    If you want to play the pedant, you need more than a little nouse about you or you will get tripped up.

    Engineers are not scientists. Most meteorologists are weathermen who are not scientists. And geologists who mainly work for oil companies etc are also almost all not scientists. And the quote you object about up thread is from nobody here but from a writer of SciFi who presents it thus "Plot Idea - ....," which I think should give strong indication about its intended message.

  12. Weather Channel co-founder John Coleman prefers conspiracies to climate science

    "Is this just math you do as a Republican to make yourself feel better or is this real?"

     - Megyn Kelly to Karl Rove Election Eve 2012 .... but it also seems to be a relevent question to ask here also

  13. Looking after the right forests benefits the climate

    That's what I figured. But that's what comment sections are for--things you couldn't get to in the main article (and of course other things, sometiems) aren't they? '-)

     

    Moderator Response:

    [JH] The purpose of the comment threads on the SkS website is clearly articulated in the introductory paragraph of the SkS Comments Policy, i.e., 

    The purpose of the discussion threads is to allow notification and correction of errors in the article, and to permit clarification of related points. Though we believe the only genuine debate on the science of global warming is that which occurs in the scientific literature, we welcome genuine discussion as both an aid to understanding and a means of correcting our inadvertent errors.  To facilitate genuine discussion, we have a zero tolerance approach to trolling and sloganeering. 

  14. 2014 SkS Weekly News Roundup #45B

    As for the death penaly analogy why is it that the percentage of people surveyed in, say, the USA, that are proponents of AGW is steadily falling.

    I don't know, perhaps there is more mis-information propagated there than before ?

    And abolition of the death penalty had no effect on the financial well being of the populace whereas implementing measures to reduce CO2 emissions certainly does.

    This wasn't the point, of course. And failing to implement measures to reduce CO2 emissions will also affect the financial well being of the populace.

    And if public opinion can be swayed so readily, why is there still no replacement of the Kyoyo Protocol?

    I didn't say public opinion could be readily swayed; The TV program I mentioned took a number of people and forced them to confront arguments that they would normally avoid. The participants agreed to stay in meetings and listen to views on both sides that challenged their existing predjudices. They spent a lot of time in careful argument and discussion. That sort of thing certainly doesn't happen down the pub on a Friday night with your mates, nor would you expect someone who thinks like a Daily Mail reader to read the Guardian or vice versa.

  15. 2014 SkS Weekly News Roundup #45B

    Ashton, I just performed a Google search with the term "US polling global warming", and most recent polling I found shows that a majority of Americans accept that global warming is the result of human activities and support action to mitigate it at various levels of government & society (even if they do not report being seriously worried by it at the personal level). Further, to the best of my knowledge, such support has increased over recent years after a period of decline.

    So I should like you to please provide a link to a poll that demonstrates your assertion otherwise in @10.

    If we are to take seriously the notion that "financial well-being" of the populace is a good reason to avoid or postpone action to mitigate global warming, the fair and accurate thing to do is to compare the financial burdens of mitigation to those of adaptation or suffering - and I would say that, in effect, misinformed, underinformed, or uninformed citizens are failing to do make the appropriate comparison.

    So Londoners, for example, have the choice between:

    1. Paying some extra tax money now (and for over, say, 1-3 decades) while they and the rest of the world's citizens get to work cutting emissions to near-nothing and working out how to suck excess CO2 from the atmosphere, and
    2. Paying even more extra tax money to continuously upgrade, maintain, and/or repair London's sea wall defences against rising seas for centuries to come (*), or in the absolute worst case abandon London to the ocean. (To say nothing of any other adaptation/suffering costs Londoners will have to pay for.)

    If you think otherwise, on what evidentiary basis do you conclude that adaptation/suffering will be easier and cheaper than mitigation?

    -----
    (*) Which they are likely committed to doing to some extent, anyway, now that the West Antarctic ice sheet has begun to collapse.

  16. 2014 SkS Weekly News Roundup #45B

    Will thanks for the explanations.  

    KR absolutely none at all. No, I'd best qualify that in case you might misunderstand.  I don't think "97% of climate scientists contrive an environmental crisis"and I do know that it has been stated 97% of climate scientists agree with AGW.  I say "has been stated" as  I haven't read the relevant papers supporting that claim I am relying on reports in the media that they do.   My point is that a comment "that 97% of scientists say this or do that or think the other re climate change"  is welcomed by those who disagree with AGW because that statement isn't accurate.  Nit picking?  If you say so but that reply from will  would allow the real nit pickers into the action pointing out that a lot less than 97% of meteorologists and engineers and geologists do not agree with AGW

  17. New study questions the accuracy of satellite atmospheric temperature estimates

    Dr Abraham:

    The version of the OP over at The Guardian feels a bit incomplete, as if there were more people whose impressions you had gathered that weren't included, and the impression I have is that there was more to be said about the critical attention Weng et al received, only the post was truncated before you got around to discussing it.

    Was that your intent?

  18. 2014 SkS Weekly News Roundup #45B

    Ashton - The fact that people sometimes act in ways that are not in their best interest (smoking, pollution, continued climate change, etc.) does not mean such behavior is exemplary. Or that we shouldn't try to do better. 

    From your nitpicking in the comment above, would you have issues with a (revised) line such as:

    "97% of the world's (climate) scientists contrive an environmental crisis, but are exposed by a plucky band of billionaires & oil companies (& their lobbyists)."

    Because that conspiracy theory really seems to encapsulate much of the current 'skeptic' blog commentary...

  19. 2014 SkS Weekly News Roundup #45B

    From the Seven Myths article:

    "Myth 5: Climate change is now one of the biggest causes of disasters

    Fact: The biggest cause of disasters is vulnerable people and infrastructure in areas exposed to extreme events."


    My problem with this is that the latter is always going to be true in pretty much every circumstance. As NYC gets inundated by sea water, you could say, "Oh, that wasn't so much a GW thing; it's just that they didn't have their seawall infrastructure ready."

  20. 2014 SkS Weekly News Roundup #45B

    Ashton, it wasn't composed by me, but yes, it should say climate scientists. On the pedestrian thing, I was agreeing with you, but just finding it sad that this is the level of understanding that is influencing our futures.

  21. 2014 SkS Weekly News Roundup #45B

    will I think your statement "97% of the world's scientists contrive an environmental crisis"  should be "97% of the world's climate scientists contrive an environmenta crisisl".  It is not true that 97% of the world's scientists are proponents of AGW they are not, the claim is 97% of climate scientists are proponents of AGW which is not the same thing at all.  As for the death penaly analogy why is it that the percentage of people surveyed in, say,  the USA, that are proponents of AGW is steadily falling.  And abolition of the death penalty had no effect on the financial well being of the populace whereas implementing measures to reduce CO2 emissions certainly does.  The efforts in Australia to introduce a 'carbon tax" which was actually an ETS,  lead to the rapid demise of the government that tried to do so.  And if public opinion can be swayed so readily, why is there still  no replacement of the Kyoyo Protocol?

  22. One Planet Only Forever at 00:51 AM on 8 November 2014
    2014 SkS Weekly News Roundup #45B

    Ashton,

    I agree that the 'pedestrian' excuses for 'dismissing the action that the continuously improved understanding of what is going on requires' does matter.

    The ability of callous pursuers of personal benefit, people whose interests are threatened by a requirement to develop a sustainable better future for all, to succeed in maintaining popular disinterest in better understanding what is going on and suceeding in promoting made-up claims to be used as 'pedestrian' excuses is a serious problem.

    Humanity has repeatedly failed to keep callous uncaring people from suceeding in their damaging ultimately unsustainable pursuits. The potential popularity of a personal better present from damaging unsustainable activity has always been the barrier to humanity succeeding to develop a sustainable better future. That can change, but a sub-set of the population that is currently very powerful need to be forced to change their rather firmly made-up minds so that they stop trying to create appealing made-up excuses for 'pedestrians'.

  23. Looking after the right forests benefits the climate

    There are loads of benefits that rainforests provide, but I didn't want to get bogged down in that discussion with this post. 

    In principle, REDD+ is about paying for carbon alone, on the basis that this is good climate policy. I think that this is very well-jusified scientifically, and Dr Unger's piece could be interpreted as a claim that it isn't. 

    In principle, the other wonderful advantages of rainforests, such as biodiversity, providing new chemicals for medicines and stopping precious productive soil from washing away would also be worth paying for. But if I talked about that, then the blog post would have gone on and on!

  24. 2014 SkS Weekly News Roundup #45B

    Phil, I was thinking of that cartoon, too. There's a lot of good related stuff here: rationalwiki.org/wiki/Global_warming_denialism

    Including this witticism:

    "97% of the world's scientists contrive an environmental crisis, but are exposed by a plucky band of billionaires & oil companies."

    —Scott Westerfeld

  25. Ocean acidification isn't serious

    dvaytw, 'How did they survive'? The simple answer is... they didn't. One of the primary reasons we know that these changes are going to kill corals (aside from the fact that it is, you know, already happening) is that there were coral die offs from similar events in the past.

    It is also important to note that the rate of change is often more important than the absolute value. Changes which occur over the course of thousands of years allow organisms some time to adapt. Those which occur over the course of only centuries or decades generally do not.

  26. Ocean acidification isn't serious

    Here's a very annoying "oh yeah?" question I got about the issue of ocean acidification, warming and corals (and other shelled organisms).  The dude basically said, "Oh yeah?  Well if these things are so dangerous to corals, how did corals survive earlier periods when the ocean was much warmer and more acidic than it is now?"  

    Can anyone answer that?

    Moderator Response:

    [Rob P] - Sorry, I have written a series of rebuttals on this very topic but need to get our SkS graphics guru to create the animations necessary to convey the essential points.

    Firstly, it's the concentration of carbonate ions that is important for shell-building. Tom Curtis is not quite correct about calcium ions. Both are the building blocks of the calcium carbonate structures, but calcium is largely invariant on sub million-year time scales. This is not the case for carbonate. So it's the concentration of carbonate ions that is the issue. A measure of the availability of carbonate/calcium ions is called the calcium carbonate saturation state - aragonite (a form of calcium carbonate) in the case of reef-building coral.

    When additional CO2 is added to the atmosphere, more of it dissolves into the surface ocean. One of the reactions that takes place is the conversion of carbonate to bicarbonate when the carbonate ions combines with a hydronium ion. This buffers the decline of pH at the expense of the calcium carbonate saturation state, i.e. pH would fall even further if not for this reaction. 

    At equilibrium, CO2 is introduced into the atmosphere by volcanic activity and removed by the chemical weathering of rocks. If these two were not in balance, the climate would inexorably drift without any external influence. With geologically-rapid injections of CO2 into the atmosphere, the carbonate system is overwhelmed. The warmer atmosphere brought about by the extra CO2 increases the moisture content of the air and the greater rainfall-induced weathering (and dissolution of carbonate sediments on the ocean floor) flush more carbonates and bicarbonates back into the ocean, thus restoring the saturation state. This process takes tens to hundreds of thousands of years though.

    So ocean acidification only occurs with geologically-rapid injections of CO2. With slow increases, or steady states, the weathering response is able to supply alkalinity back to the ocean to compensate for the carbonate ions converted to bicarbonate. Actually, the tendency is for the weathering process to overcompensate - creating an ocean carbonate saturation state that is even more hospitable to calcification than before the acidification event, or slow increase in atmospheric CO2.

    With this understanding, the geological record now makes sense. Extinction events, such as the End Permian extinction (where 95% of marine life was extinguished), involved a large and geologically-rapid increase in CO2 and therefore experienced ocean acidification as a kill mechanism. Marine life that were vulnerable due to their carbonate mineralogy were preferentially extinguished. Periods of sustained high atmospheric CO2, on the other hand,  did not cause a calcification crisis (although tropical ocean warming was an obstacle) because the carbonate saturation state was much higher than today. A classic example is the Cretaceous (Latin for chalk - as in calcium carbonate shells) Period, named after the prolific shell-formation that accumulated during this interval. Atmospheric CO2 was high and ocean pH was low, but the ocean carbonate saturation state was very high. The ocean back then was therefore very hospitable to calcification.

    So it's only rapid CO2 increases that cause ocean acidification. And we just so happen to be increasing Earth's atmospheric carbon dioxide concentration faster than it has ever increased in the last 300 million years. Very serious indeed.

  27. 2014 SkS Weekly News Roundup #45B

    Ashton @4

    For your comment on "Summers of old" see this

    On your more general point on popular opinion:

    Many years ago the UK broadcaster Channel 4 produced a TV program on Capital Punishment. At this time popular opinion was in favour of re-introduction of the death penalty, but politicians were not. The program took a representative sample of people, matching for race, class, general political opinion, and, of course, their view on the death penality. The sample was then exposed to the arguments that the politicians were exposed to; from lawyer,s pressure groups and victims. The result was that the group switched their view to closely match that of the politicians. By becoming better informed, the peoples view better matched the "out of touch" politicians.

    This should be obvious, people generally don't like to be confronted by evidence that goes against their pre-determined beliefs; the UK population enjoyed the July sun, but conveniently ignored the January and February floods.

  28. 2014 SkS Weekly News Roundup #45B

    Two points Will.   First sorry if my anecdotal report was not what you would have liked to hear but what is, is.  Second, as you can see by the lack of response globally on reducing CO2 emissions, "what some pedestrians thought of the weather last Tuesday" matters very much to governments around the world.  This is  especially so as not being too concerned about climate change or IPCC predictions  is "what the majority of pedestrians thought" not only "last Tuesday" but every other day as well.  Just ask President Obama.

  29. Looking after the right forests benefits the climate

    More on Africa: Too bad, because particularly in many parts of Sub-Saharan Africa there are many areas of high bio-diversity that are in need of preservation.

    Preventing the loss of forest there may also have helped prevent (or made less likely) the recent outbreak of Ebola. Deforestation has been tightly linked to deforestation in the region, since the forest animal vectors are more likely to end up where more people are, and so get eaten leading to new outbreaks.

  30. Looking after the right forests benefits the climate

    Many of the darkest green countries with the most forest-saving projects are also places that have some of the highest bio-diversity in the world. Even if GW weren't the global crisis that it is, these would still be vitally important projects to carry out. Too bad there aren't more of them in Africa.

  31. 2014 SkS Weekly News Roundup #45B

    Good points, OPOF.
    Ashton, it's a sad thing if international policy on CC is based on what some pedestrians thought of the weather last Tuesday.

  32. 2014 SkS Weekly News Roundup #45B

    I've been living in the UK since February and the mood here is that this year's weather has been "like summers of old" and "really good" and "although the winter was wet rather that than cold".   Weather forecasters have continually presented warm conditions with plenty of sunshine and the population is generally happy.  As for rain although the August was the eigth wettest on record but September was the driest for 100 years.   Retailers have been worrying as sales of winter clothing has been well below average It all adds up to giving the denizens of the UK a year that is considered "not too bad at all" and "if this is global warming hope it stays this way".  Fron m general conversations I'm not sure that the UK population is as much in tune with the IPCC as the IPCC might like.

  33. One Planet Only Forever at 15:32 PM on 7 November 2014
    2014 SkS Weekly News Roundup #45B

    wili,

    The following is a more significant point from the article.

    "The Copenhagen Accord, adopted at the 2009 Copenhagen conference of parties to the UNFCCC, explicitly sets 2 degrees Celsius as the threshold number beyond which we would cross over into a danger zone. But it also calls for an "assessment...to be completed by 2015" that would "include consideration" of whether the number should actually be changed to 1.5 degrees. That debate, van Ypersele suggests, may have spilled over into the IPCC process."

    Setting the limit of concern back to 1.5 degrees, where it was before Copenhagen, would really highlight how damaging the lack of significant action to reduce impacts since 1993 by the most developed nations, particularly the nations with the highest per-capita impacts at the time has been.

    Even pointing out what is now required to meet the 2.0 C limit would allow the math to be done to show how much of the total impacts have already been produced by the most reluctant and irresponsible of the developed nations. And the criticism of those developed nations is worse if their actions to benefit from the burning of fossil fuels in other nations (selling fossil fuels to developing nations or buying products created in developing nations through he burning of fossil fuels), is included as 'their impacts'.

    Hence the reason the information could not be agreed to be presented. As mentioned in the article:

    "The way the IPCC works is that the scientific texts are written by scientists, but they also have to be approved by governments. Thus scientists can veto inaccuracies, but governments can also prevent the inclusion of certain content. Oppenheimer says the IPCC process is unique in this way, and thinks that the box could have been modified to suit all the parties involved if there had been more time for negotiations. But "in the end, the governments couldn’t reach an agreement," says Oppenheimer, "and time ran out, and the box fell by the wayside.""

    I was initially not impressed by the IPCC "Political Minder Process". It results in the reports understating the implications of the best understanding of what was going on. However, the forced understating by the political minders did result in each successive report becoming significantly more "certain and concerning". But, the weakened statements in the earlier reports were the excuse for the most damaging ways of living to not need to be rapidly curtailed until there is more proof of the need to do so.

    We are clearly approaching the apex of concern on this significant issue. However, I fear that the increased scale of action because of the continued lack of significant action will be seen as absolutely unacceptable to those who think they can still get away with benefiting a little longer from their irrefutably damaging and unsustainable ways of living. The worst among those type of people continue to succeed at their attempts to keep people less aware and maintaining popular support for the derision and dismissal of information like the IPCC Report content they were unable to keep from being published.

  34. 2014 SkS Weekly News Roundup #45B

    If you haven't yet, do read the last story about two crucial pages left out of the IPCC report--basically, they were just too scary.

    They mention things like "catastrophic...events" and the immediate need for "rapid and deep emissions cuts."

    But we can't have anything approaching the full scary truth leaking out of what's supposed to be a sleepy, conservative, consensus, safe, bureaucratic report, now; can we?

  35. One Planet Only Forever at 12:33 PM on 7 November 2014
    2014 SkS Weekly News Roundup #45B

    The opening article "Britain had one of warmest and wettest years on record" highlights a pet peeve of mine.

    The article repeatedly refers to data so far from January to October which is only 10 months, so not 'a year' as the headline states. However, there really is no need to say things like 'so far this year'. Any set of 12 months is a 'full year'. A presentation of the results from November 2013 to October 2014 is also the results of a 'Year'. And any set of 120 consecutive months is a decade.

    Using the NASA/GISS data set the current 12 month average ending in September is 0.64 C. That is warmer than the warmest 12 month value that ocurred during the unusually strong ENSO event of 1997/98 (which was 0.61 C), and the current conditions have been ENSO neutral. Also, the current average for 120 months ending in October 2014 is 0.58 C which is significantly warmer than the average of 120 months ending on Dec 1998 which was only 0.30 C.

    It is not necessary to wait for the end of this year, or the end of the current decade, to point out that significant annual or decade scale changes are continuing to occur. In fact, when reviewing averages of 30 years of data there has been no significant reduction of the rate of warming. The average of 360 months ending in October 2014 is 0.16 C warmer than the average of 360 months ending in October 2004.

  36. Upcoming MOOC makes sense of climate science denial

    Not to be pedantic or anything, but at least on my browser (Safari, but Firefox shows this as well), the box in the upper right part of the page spells "enroll" with only 1 l.

  37. Republican politicians aren't climate scientists or responsible leaders

    The post's subject was the avoidance of clarity - with strong suggestions of rejection of climate science - by leading US politicians - and their apparent unwillingness to be upfront and forthcoming; it was not my intent to take the discussion into forbidden territory. 

    Since my last comment the Republicans have gained control of the US Senate and their most prominent climate science denier - Jim Inhofe - is being suggested as the likely next chairman of the senate environment and public  works committee. I don't know to what extent the Republican party position is that of open and clear rejection of climate science or to what extent it is  suggested and implied but less openly stated. It seems that appointments such as this - presuming it goes ahead - can only really occur if based on outright rejection of expert advice by Republican party leadership. I haven't seen indications of strong commitment to climate action from US Republicans -  that may be an artifact of not being deeply immersed in US politics but it does look to have parallels with conservative climate politics in Australia.

    Climate science denial and obstructionism by leaders holding positions of trust and responsibility give rejection of climate science a stamp of respectibility and credibility by their tolerance for it, even when they don't openly state the more extremist views such as Inhofe's themselves. I think it is the essential ingredient in ongoing failures to face the climate problem head on - more so in my opinion than any failures of scientists to communicate clearly - or of technological capabilities to address the problem.

  38. CO2 limits will hurt the poor

    Grizwald @47:

    1)  In the case of the Irish Potato Famine, while corn laws were a government intervention that did not help, the fact is that Irish rents were sufficiently high that those suffering in the famine would have been unable to pay for grain at any price.  The rents were set by private market mechanisms and hence the Irish Potato Famine constitutes a market failure.  A similar point can be made in Ethiopia in which the government intervention determined that the starvation would occur in the country rather than the cities, but no whether or not starvation would occur.

    2)

    "The best interest is in fact a "percieved" best interest. However this is still in the best interest of the individual no matter how much they don't know. What they don't know is irrelevent since they don't know it, and thus they will not be able to adjust their decision."

    I need to frame that in all its absurdity as an example of just how silly market fundamentalism is.

    With similar illogic we can argue that all car accidents are in the "best interests" of their victims who do not percieve themselves as driving too fast, or too tired, or too drunk - else they would not choose to drive.  We could likewise argue that there is no such thing as economic fraud, for anybody buying the Brooklyn Bridge (to use the classic example) is acting in their best percieved interest at the time, and hence, by your argument, in their best interest.  And if they act in their best interest, they cannot have been harmed.

    The fact is, people can act in their own worst interests.  They can do so both from not recognizing where their own best interest lies (ie, doing something that they achieve and then regret that they achieved it), or by not recognizing the costs of their acts (ie, doing something and achieving their end, but regret the circumstances in which it is achieved), or by doing something and failing to achieve that which made it worth doing.

    3) Why do I think economic growth could reverse with sufficient warming?  Well, first, given 10 to 15 C warming, the Earth becomes literally uninhabitable for large mammals (including humans) except at the extreme poles.  That is not consistent with economic growth.  Ergo, for sufficient warming economic growth must reverse.  The question is only how much warming is necessary for that.  High end temperature projections for the end of this century approach +7 C so they are in the range of potential, but not certain, reversal of economic growth.

    Your claim of uninterupted economic growth is certainly untrue of civilization wide measures.  A variety of civilizations have had sustained periods of negative economic growth, in some cases ending the existence of the civilizations.  With a truly global civilization developed for the first time in the twentieth century, we now have the possibility of a global reversal in economic growth (if we accept you unsupported claim that it has never occurred before).

    4)

    "To assume there will not be a market response in the face of an ecological disaster is just a weak position to hold."

    On the contrary, I assume that there will be a market response to impacts of global warming.  That market response will be, as you yourself say, to leave the poor to their tragedy; to assume that the poor can just migrate to solve the problem while all nations of the world have enacted legislation to prevent that migration (including, most importantly for Bangladesh, India, its only land neighbour), and to assume that, due to market fundamentalism, the poor will not be worse of because they can choose the best option in their worsening condition (as if a person with gangrene in the leg will not be worse of because they can always choose an amputation).

    5)

    "When I stated that "they offer the wrong solutions" at the end I was referring to interfeering with the natural market."

    There are no natural markets.  Never have been, and never will be.  Currently national markets are (universally SKAIK) distorted by laws permiting limited liability, preferred creditors, the existence of non-natural entities able to own property (corporations), and a legislated annual devaluation of wages and savings (mandatory inflation regulated by central banks).  These all work in favour of the rich at the expense of the poor and are government interferences with the market.  We also have government provided roads using mandatory acquisition of land to do so, along with various other mandatory "rights" of providers of communication services that allow the providors of those services to gain the necessary right of ways at below market value.  We further have courts to enforce legal rights where the prospect of success is a direct function of fees paid to lawyers (which establishes them to be systematically unjust, and unjust in a way that favours the wealthy).

    International markets are further distorted by laws that place no limit on the movement of capital, but strictly constrain the movement of people (thereby giving the possessors of capital far more flexibility than those who make a living by selling their labour, to the benefit of the former).

    Finally, the fundamental notion of markets (property rights) are socially defined constructs, and in most of the world, socially defined constructs that freeze as legitimate prior acquisitions by naked force (as, for example, all land held other than by indigenous people in North America, or Australia).

    I am disinclined to take market fundamentalists seriously until the spend as much time attacking the above listed distortions of the market as they do attacking any that serve to ensure the net gains of the economy are fairly distributed.  Until they do, they merely demonstrate that their "market fundamentalism" is an inconsistently applied, and self serving ideology.  It is a gambit to improve their position, not a serious belief.

  39. CO2 limits will hurt the poor

    Tristran - I agree with you as to definition of troll, but I also think there are discussions that are not worth having on this site. Sks exists to explain what peer reviewed science has to say about global warming. There are plenty of other sites in which to have unscientific arguments.

    The primary problem is that there is no point having a discussion about the science with someone who chooses to be informed by an ideological position rather than data. The old saying that "you can't reason a person out of position that they werent reasoned into in the first place".

    It is the nature of the human condition to try and warp reality to fit our cherished preconceptions and noone is immune. What science training should do is imbue the discipline of letting data change our mind. And that t'aint easy. A scientific discussion necessarily is informed by data and citation is a tool for referencing both data and evaluating it. That is why it is preferred here.

    The commonest kind of "pseudo-skeptic" we get here is someone who for ideological or group identity reasons is repelled by suggested solutions to AGW.  Instead of suggesting alternative solutions that are compatible with their world view, they instead pursue one or all the canon "It's not happening; It's not us; It's not bad". Understandable but illogical. If no data will cause them to change their mind, then a discussion is not worth happening.

    For better or worse, Grizwald57 comes across as someone wedded to an extreme form of free market ideology who I suspect would might even take issue with Milton Friedman on market failures and externalities. I'm also inclined to agree with Dikran that his responses are laughable but whether that is delibrate provation (which would be trolling) or ideological blindness is less clear.

  40. CO2 limits will hurt the poor

    Grizwald57 - Unfortunately, some government action will have to be employed due to fossil fuel externalities not being carried by the emitters, but rather paid in a diffuse and unattributed fashion by the population as a whole - the Tragedy of the Commons. It's less expensive to be a polluter if you can just dump the pollutants into a stream or a landfill, and we have long established regulations to prevent common waters from becoming sewers. The same needs to be applied to fossil fuels, accounting for external impacts such as health, agriculture, oh, and climate change. 

    If these costs are accounted for then renewables are the most economical source of energy right now. But that will take some regulations and very likely something like a carbon tax so that the actual costs of using fossil fuels are tied to their use, rather than being dumped on everyone else. 

    As to the poor, and your original comments: the poor, the Third World countries, will have disproportionate impacts from climate change, far out of balance from their contribution to it (as they use less fossil fuel per capita). Yes, anyone can adapt to some extent. But the costs to the disadvantaged will be much higher in both relative and absolute terms, and that is a harm. Which becomes not just an economic issue, but a social and moral one - is it right to profit from short term fossil fuel monies while the costs of those profits fall upon others? 

    Overcoming individual profit and yes greed requires social structures and strictures such as regulations. The unlimited free market just doesn't do those. 

  41. CO2 limits will hurt the poor

    A troll is a person who sows discord on the Internet by starting arguments or upsetting people, by posting inflammatory, extraneous, or off-topic messages in an online community with the [i]deliberate intent of provoking readers into an emotional response or of otherwise disrupting normal on-topic discussion[/i].

    A person who is not good at expressing their views is not a troll. A person who gish gallops is not a troll. A person who dodges questions is not a troll. They might be irritating for you deal with, they might be ideologues, they might even be idiots, but I see DNFTT far too often on this site. It's a dismissive line. It's dismissive of people who don't necessarily agree with you or argue in a 'scientific' manner (that is, calmly making falsifiable statements with citations).

    Grizwald is attempting to discuss the subject. He just isn't doing so in the way people here prefer to discuss a topic. Climate communication, any communication, requires patience. Superciliousness is not going to further the conversation.

  42. Dikran Marsupial at 20:35 PM on 6 November 2014
    CO2 limits will hurt the poor

    Grizwald wrote "I will not state my position."

    this is more or less an admission of trolling.  In a rational discussion intended to establish the truth it ought to be a given that the participants will be willing to state their position on request (indeed they ought to be keen to state it up front).  However in discussions on climate this tends not to be the case as people don't want to give hostages to fortune and be required to justify their position later.  Shame on you.

    As to the other issues, your main error is to concentrate on the number of people in poverty in a given country.  However the climate is utterly oblivious to national boundaries, and a countries ability to deal with climate change depends on the proportion of the population in poverty, not the number.  Those in poverty do not have the resources to reliably meet their immediate needs, so it is absurd to expect them to provide the resources required for adaption, the resources have to be provided for everybody in that nation by the part of the population that can actually afford it.  China has a lot of people earning under $2 (18.6%) but their GDP per capita is $11,868, which suggests there is a good deal of wealth in the 81.4% that are not in poverty who can look after those that are.  Nigeria on the other hand has a GDP per capita of less than half that and 82.2% living on less than $2 a day.  China has a much larger number of people in poverty than Nigeria, but the reason it has some resources to adapt is that it has an even larger number that are not in poverty.  The same is not true for Nigeria.

    "The people of Bangladesh would then have to address this constant flooding issue by either running from the tidal wave (the natural human reaction) or somehow economically prevent the flooding (perhaps by somesortof off-shore engineering).  To assume there will not be a market response in the face of an ecological disaster is just a weak position to hold. "

    This is just silly.  Bangladesh has the fifth highest population density of any country and the worlds eighth most populous.  There isn't anywhere for them to run to that is agriculturally viable.  The only place they could go would be mass migration to othe countries.  If you think that wouldn't cause huge political, social and economic problems, then you are on another planet.  The idea that some sort of offshore engineering is going to solve the problem is really daft and shows huge igorance of its geography.  Bangladesh is basically one big river delta, you have huge amounts of water arriving from inland as well and coming in from rising tides.  As for market response, 76.54% of the Bangladeshi population live below the poverty line ($2 a day).  They don't have the funds to spend in the market on anything other than their essential daily needs.  The GDP per capita of Bangladesh is ranked 144 out of 187 nations by the IMF, so expecting a market response is, to say the least, highly optimistic!

    My recommendation is DNFTT, Grizwald is clearly just trolling, as the reticence to state his position and ridiculous arguments clearly demonstrate.

  43. CO2 limits will hurt the poor

    Grizwald57 - what you are saying only applies to rich countries. The poor in rich countries may not be suffering but that doesnt apply in Third World - where there are real poor. A farmer in Bangladesh keeps investing in planting his crops because he doesnt have other choices. Well, yes, when starvation is imminant because land is lost, then you must leave, but the result is probably the same for most. The poor on the whole dont have choices. 

    All the actual studies show that mitigation is cheaper, but the costs are in future and/or inflicted on those who are not responsible. If you having to pay now the costs of climate change, then transition from FF would be happening rather quickly. 

  44. CO2 limits will hurt the poor

    I'm sorry for reposting that. It was my mistake. 

    Tom Curtis...

    Even if I do ignore geographic impact factors, the poor are still going to be able to adapt. Just because there is a wealth inequality does not mean the poor are unable to adapt. It is true that the rich will be more able to adapt but this is true for all circumstances. The rich being more well off than the poor is just a fact of life. But this is not an inherently bad thing. The key thing you said was "as much." As much, is still implying a level of adaptation. I don't have as much food as a millionaire does, but I'm not suffering. When I worked at a fast food restaurant making minimum wage I was not suffering. Just because a person must adapt to a changing environment does not mean they will suffer. If I am a farmer, and for the past 10 years I've noticed decreasing crop yields, I can either continue farming the land knowing eventually I will be unable to produce any crops, invest in better farming techniques, or sell my land for a cheaper price. But the only way I could end up suffering in this situation is if I chose the option which gave me the least percieved benefits which I won't logically do. That is the ONLY way I could end up suffering. Logically, no one would ever choose the option which gave the least benefits.

    Now, if mitigation costs less than adaptation, then either presently or in the near future we should see more private investments into environmental sustainability. If there are net gains to be made from renewble energy (which I suspect in the coming decades), then transitions will be made.

    Moderator Response:

    [RH] I would challenge you to go talk to these people and tell them there is "nothing inherently bad" about their situation. http://climateandcapitalism.com/wp-content/uploads/sites/2/2012/08/Bangladesh-floods.jpg (Note: I had to check myself a little by not selecting one of the far worse images of people's situations in Bangladesh.)

    [RH] Also, please, no all-caps, as per comments policy.

  45. Climate Change: The 40 Year Delay Between Cause and Effect

    This is a bit late but I think this article needs serious re-editing. It correctly quotes a paper by Hansen, et al with "the time required for 60% of global warming to take place in response to increased emissions to be in the range of 25 to 50 years" but later goes on the say "With 40 years between cause and effect" and this is reflected in the title. I'm not referring to the rounding to 40 years but to the implication that any CO2 that lodges in the atmosphere won't warm the surface at all for 40 years (or whatever the actual period is). This is surely incorrect. The CO2 has well known heat trapping properties, which are not put into abeyance for some decades. The lag is not a lag at all, it is simply that 60% of the ultimate effect takes some decades to become manifest. But some smaller percentage becomes manifest in a smaller time. Indeed, the CO2 begins trapping heat immediately.

    Hansen et al (2011) ("Earth's Energy Imbalance and Implications") includes a graphic representation of the climate response to a doubling of CO2 (though I can't see why a similar response curve wouldn't apply to any increase in CO2 forcing). It shows a very rapid response to the forcing, reaching 60% in about something less than half a century, as far as I can tell, but 40% effect is reached within a few years.

    So there is no lag at all; it's simply that it takes perhaps 40 years or so for most of the ulitimate effect to be felt.

    muoncounter got it about right in an earlier comment but this didn't result in any editing of the article.

  46. 2014 SkS Weekly News Roundup #45A

    Thanks, Ash and dag. In the big perspective, if either of the major parties win, we all lose, as they're both ultimately in the System and part of the problem. But it is rather sad to see the worst of two Weavels again get the upper hand...again.

  47. CO2 limits will hurt the poor

    " The people of Bangladesh would then have to address this constant flooding issue by either running from the tidal wave (the natural human reaction) or somehow economically prevent the flooding (perhaps by somesortof off-shore engineering)."

    So I gather you are perfectly happy with one lot of people reaping the benefits while another pay the costs? Do you seriously expect that view to be respected? Or since AGW is caused by rich nations, are suggesting that the rich nations should pay for the Bangladesh (and every other delta) coastal defense? If your neighbours action caused you to lose you land, then I strongly suspect you would run to court of law. Same here?

    And where would expect the Bangladeshi to run to? Are you suggesting the rich countries should take the refugees from the climate problems they have caused?

    The problem with the "natural market" is that the externalities are not being factored into the price, and those affected most have no recourse against those doing the damage. Change that and carbon-based energy becomes expense.

  48. Weather Channel co-founder John Coleman prefers conspiracies to climate science

    Michael Sweet #10.

    Totally agree. I have seen Gavins comments on those isues. Unfortunatly the mainstream media (newspapers etc) often  ignore good scepticism like that, and often give vent to the extremists like Christopher Moncton.

  49. CO2 limits will hurt the poor

    Grizwald57 - All economic decisions have both costs and benefits. In this particular situation the choice lies somewhere in a mix of mitigation choices and forced adaptations to the consequences of our emissions.

    The majority of the studies I've seen on relative cost/benefits indicate that adaptation will cost between 5-10X more than mitigation (including transitioning away from fossil fuels). In fact, much as transitioning from horses to autos led to major economic gains, there are strong indications that the transition to renewables will also lead to net economic gains. While there are a few exceptions to this, they include primarily conomists with unsupportable assumptions and some who assert that we will simply invent our way out of trouble - even though you cannot schedule inventions...

    Note that many adaptation costs will be fixed - salt encroachment into farmlands doesn't differentiate based on local incomes, and the poor will not be able to afford as much adaptation as the rich. The poor will indeed suffer more from adaptation than the rich, even if you ignore the geographic impact factors.

    BAU is, in fact, the more expensive path to take. 

  50. Weather Channel co-founder John Coleman prefers conspiracies to climate science

    As a constant Skeptical Science lurker I’ve only made a couple of posts since the inception of this blog. I’ve read a lot on the subject at other venues as well.

    Over the years that I’ve been paying attention I’ve come to realize that the science in support of the theory of AGW is being researched by Republicans, Democrats and Independents. Every prestigious scientific society along with every prestigious peer reviewed journal say that man is the main driver of climate change.
    From my reading of the issue over the past 15 years or so it seems that those researchers and fake experts who are “skeptical” all seem to have one thing in common. They’re all Republican libertarian types which makes it seem evident that their political ideology rises to a much higher level than the science. Perhaps there is an exception that proves the rule but I’m not aware of it.  John Coleman and those in leage with him might contemplate that when you believe the world is all wrong and that your all right that perhaps some interspection should be undertaken.
    It’s just a nonscientist’s opinion.

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