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From Peru at 13:18 PM on 15 March 2012Correction to the True Cost of Coal Power - MMN11
Tom Curtis: You said: "So, in your example, the bank can invest the money and get a return of, on average 3% per annum without anybody loosing. Indeed, some others will gain from positive externalities." For how much time? Environmental climate damage can last tens-hundreds of thounsands of years (like the Paleocene-Eocene Thermal Maximum event). Do you think you can have a 3% of sustainable growth for 100 000 years? This image comes to my mind:
Assuming eternal growth is one of the reasons of the current mess, as was discussed here.
Alexandre:
You said " It's saying the goods this generation will enjoy have to be considered as more important than the goods the next generations will do "
And you are totally right.I do not know much about economics, so I was asking a bold question to see if someone else with more knowledge on the topic has arrived at the same thought than me, or if instead I had missed something.
I could not know much about economics, but I feel that something is completely wrong about how our society is described.I post this comment to see if others share the same feeling.
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jzk at 12:47 PM on 15 March 2012Lindzen's London Illusions
Well Sphaerica@83, (-snip-)Response:[DB] Your comments were moderated due to a failure on your part to establish relevancy to the OP of this post. If you wish to continue your line of reasoning, replete with sources, far more relevant threads exist here at SkS than this one (use the Search function in the upper left of every page here).
Before commenting again, please familiarize yourself with this site's Comments Policy & ensure future comments comply with it. Thank you.
Moderation complaints and off-topic comments snipped.
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muoncounter at 12:47 PM on 15 March 2012Lindzen's London Illusions
jzk#82: There's a bit of truth to that. A better way to put it is Arctic ice is way more variable - in the down direction - than it used to be. -
Alexandre at 12:33 PM on 15 March 2012Correction to the True Cost of Coal Power - MMN11
From Peru Like Tom said above, the concept of the discount rate is better understood (IMO) if you are comparing different investment possibilities. If you invest $100 to earn $100 back in 2 years, you'd probably be better off if you just keep the money safely in your pocket. Your project may not work. You could die in the meantime. The risk of the return not effectively occurring would make the investment unattractive. Ok, that's the finacial principle. There are a few serious issues with applying the same idea to environmental problems, however. The most serious one (again, IMO) is the intergeneration ethics. It's not comparing something with a quick return to a slower one anymore: it's saying that the apple you eat today is (sgnificantly) more worth than the apple your great grandson will eat. It's saying the goods this generation will enjoy have to be considered as more important than the goods the next generations will do. It takes a lot of academic funnel view to apply the financial principle at face value to AGW. -
Bob Lacatena at 12:31 PM on 15 March 2012Lindzen's London Illusions
82, jzk,Arctic Ice is very variable.
An unsupported and vacuous interpretation of the science. Go back and read the link you provided, understand it and apply it coherently (with logic) to the problem at hand. BTW, this is yet another cherry pick... very Lindzenesque of you. Find something that when viewed uncritically would seem to support your position and distract from the truth, and then stick with that and ignore all of the other evidence. Hint: consider the information provided for you (and also included in the article to which you linked) concerning what was different about the environment then (the HTM) versus now. You might also stop to think how quickly the environment you describe came to pass. Do you think it happened in 30 to 50 years, like we're doing now? You throw out statements like "Arctic Ice is very variable" as if this is just an ongoing condition, and any day the Arctic ice could start to melt away, just on a whim, because it's, you know, variable. Let's go, jzk, get up to speed. Your nonsense fools no one, and neither does Lindzen's. -
Tom Curtis at 12:13 PM on 15 March 2012Correction to the True Cost of Coal Power - MMN11
From Peru @17, suppose (implausibly) that I was a low tech farmer with a horse. I want to use the horse to plow the fields because it will be much more efficient than using a hoe, and I will be able to plant a larger crop. So, I go to the bank and get a loan to buy a horse collar, harness and plow. With that investment, I double my income, but need to give half of the extra back to the bank in repayment for the loan over a period of 5 years. For that five years, I am better of, and the bank is better of. This is an investment which has generated wealth. As it turns out, the average rate of return on investments is about 3% per annum. So, in your example, the bank can invest the money and get a return of, on average 3% per annum without anybody loosing. Indeed, some others will gain from positive externalities. I think there is a serious problem with a purely economic analysis of the cost of global warming. Such an analysis is simply incapable of totalizing the costs of (for example) the complete loss of the Great Barrier Reef. But the employment of a low discount rate is not one of them. -
jzk at 12:03 PM on 15 March 2012Lindzen's London Illusions
Citation@79, http://sciences.blogs.liberation.fr/files/arctique-banquise-10.000-ans.pdf Arctic Ice is very variable.Response: [DB] You have failed to show how Funder et al is on-topic and germane to the OP. -
Tom Curtis at 12:02 PM on 15 March 2012Lindzen's London Illusions
jzk @79 the summer insolation in the Arctic was much greater (up to 8%) 11 to 6 thousand years ago than it is now. That would have resulted in a much greater retreat in summer sea ice, only partly compensated by the greater winter sea ice extent due to the lower insolation during the Arctic winter at the same time. Now, if you want to explain the current sea ice melt in the same terms, you only need to find a forcing that increases arctic summer forcing by 20 plus W/m^2 but without effecting global forcing.
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From Peru at 11:57 AM on 15 March 2012Roy Spencer's Bad Economics
Moderator, I have posted a question about how are calculated the costs of externalities here wondering if the discount rate is just a way to hide costs. -
scaddenp at 11:55 AM on 15 March 2012Lindzen's London Illusions
6500BP is within Holecene Climatic Optimum, 4deg warmer in Arctic than today. This is consistent with (Milankovich) solar forcing. As DB asks, this is relevant to OP in what way? -
From Peru at 11:55 AM on 15 March 2012Correction to the True Cost of Coal Power - MMN11
I have a question: Let's suppose I (and my sons, grandsons,etc)have a future cost of 10 000 $ a year due to pollution. This means that an income of 10000 $/year in necessary just to compensate my losses . To do this, the polluting company put 1000 000 $/person affected in the bank as a deposit, at an interest rate of 1%/year.So every year the bank gives each affected person 10 000$.This 1% is then assumed to be the "discount rate" of future pollution costs. The cost of the pollution is then estimated at 10000*N (N =number of people affected, assumed constant in time). However, this is just the cost paid by the polluting company. Now most of the burden is on the bank, because those 10000$/person paid every year do not grow magically inside the bank. And the bank must receive at least 10 000$/person every year to do this.This is obtained from the people that borrow money and then return it with an interest, with the detail that interest rate that the bank take from the borrowers is always bigger than the interest rate of deposits. So if the bank gives me 10 000$ every year, it takes 10 000$ plus some interest from others. Here is unmasked the financial lie that "infinite future losses equal finite present losses, with: present cost =future annual cost *interest annual rate Actually that costs are paid by bank borrowers, and even worse, is all that plus the interests needed for the bank to have a profit. And in our finance-dependent society, this means that that costs that the polluting company still do not pay (equal to the total accumulated cost minus the amount given by the above formula) is paid by all us plus an amount needed by the banks to have profits. Final result: the finacial trick actually increased the social costs of pollution, now mainly paid by bank borrowers. So we have changed one externality with another! This means that to estimate the true cost too society, me must sum the future cost without discounting them. Actally we should do the opposite if the clean-up is paid via the financial system, with the obvious result that actual total damage done by pollution is much bigger than the common estimations. So , this does not mean that the "discount rate" relevant for estimating the present costs of future pollution is actually zero or even negative? -
DMarshall at 11:40 AM on 15 March 2012Peter Sinclair interview with Michael Mann
There's a radio program on the CBC site (Canadian Broadcasting Corporation) called "Demon Coal" but it quickly shifts to criticizing AGW and trots out the premier Canuck contrarians, including Ross McKittrick - and an extensive interview with Judith Curry. I must say, she's moving ever more towards denialism. Part 2 will available Mar 19 -
jzk at 11:32 AM on 15 March 2012Lindzen's London Illusions
Sphaerica@78, I said it was subject to debate. The point is that Arctic ice has experienced great variability including having about half of today's ice 6500 years ago. What caused it then?Response:[DB] "including having about half of today's ice 6500 years ago"
Unsupported assertion; citation needed. Also needed: context as to why this is pertinent to the OP.
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Tom Curtis at 11:22 AM on 15 March 2012Glaciers are growing
Sorry, I forgot to properly explain the map in my previous post. It is the map of the geothermal energy (including from volcanoes) of various part of the Earth. The units are mW/m^2, so need to be divided by a thousand to show values of Watts per meter squared. Source -
Tom Curtis at 11:18 AM on 15 March 2012Glaciers are growing
Henry Justice @26, you continue to make a string of claims with no attempt to either justify, reference or defend them. That is called trolling. Forum rules forbid me from saying what I think of trolls. Take your claim about about Arctic volcanoes. A troll says "arctic volcanoes" ergo heat from volcanoes is melting the ice. Somebody with intellectual integrity, in contrast, would seek to answer several questions. a) The volcanoes are newly discovered, but are they newly existing? If they are not new volcanoes, then their presence is not a change to the Arctic heat budget and therefore cannot explain changes in Arctic ice extent. b) Can the heat from the volcanoes reach the surface? The answer here is not obvious. The Arctic is the location of a strong down welling current as part of the thermo-haline circulation. Therefore heat from subsurface volcanoes in that region are likely to be carried in the subsurface current into the depths of the Atlantic, and hence to the Antarctic rather than to simply be carried to the surface. c) Can the volcanoes significantly effect the surface temperature? There is a lot of water between the volcanoes and the surface, and water can absorb a lot of heat. To raise the temperature of surface water significantly, the volcanoes must raise the temperature of the entire water column. It is very unlikely that they have enough heat to do so. d) Do the volcanoes have enough heat to melt the ice? As it happens, summer Arctic sea ice reduces in volume by about 100 km^3 every year. That would require 3.34 x 10^19 Joules to melt. The heat from those undersea volcanoes comes to about 0.45 W/m^2 or less:
That means there would need to be 2.35 million square kilometers of these under sea volcanoes to melt the ice.
So are there? Have they found 2.35 million square kilometers of previously non-existing under sea volcanoes in the Arctic? Or is this just another trolling drive by.
Trolling only works because the troll needs make no intellectual effort, while the rebuttal of the trolling does! I don't like that ratio, so if you are not a troll, you need to answer all four of my questions above, with linked or properly cited sources, and with the steps of your arguments clearly laid out. If you are not prepared to do so, then you clearly are a troll, which is sufficient rebuttal of any point you pretend to make. Trolls have no intellectual integrity - they have put no effort into forming their "opinions". Therefore they need be given no intellectual credence. Over to you.
Moderator Response: I've deleted Henry Justice's comment you are responding to, because not only was it trolling, it was not really on topic. -
Paul D at 10:50 AM on 15 March 2012Roy Spencer's Bad Economics
Actually another bad socialist example in the UK is the '1 million climate jobs' campaign. It is run by the Campaign Against Climate Change (CACC) group, which is frankly a group of union members. Hence the emphasis on creating jobs in the campaign title, rather than finding realistic solutions that would cut carbon emissions but maybe not produce 1 million jobs. The problem with this approach is that they often want technology solutions that may be inappropriate or not even available yet. OK they aren't skeptics, but their approach starts with socialism, then tacks on climate change policy on the side. -
scaddenp at 10:27 AM on 15 March 2012Glaciers are growing
"Sublimation may indicate a change in atmospheric air streams to a drier air. Glacier melting from increased warming via conduction is certainly a factor, not necessarily air temps increases." And the evidence for this what? And where is the extra heat from conduction coming from? Almost of all of glacier melt is in the ablation zone, and in many cases, ice loss is accelerated by calving. As to the sudden appearance of volcanoes causing melting where it wasnt before, leaving aside the question that heat flow from volcanoes is very localised, in what ways would such melting be different than that caused by warming? And how does that compare with observation? -
Bob Lacatena at 10:17 AM on 15 March 2012Lindzen's London Illusions
75, jzk, "His conclusion that because summer radiative forcing doesn't seem to be changing CO2 must not be a factor is.." ... utterly ridiculous, and you've bought it hook, line and sinker. What do you think is melting Arctic ice, and extending the melt season, if not increased temperatures? What is it, ice gremlins? That's the cherry pick... choose the statistic that appears, on the surface, to support the position you want people to select, and ignore the obvious, which is that it can't possibly be true. First... CO2 / GHG can be a factor if part of that influence is to raise spring, fall and winter temperatures and limit ice recovery as far as depth, not extent. This actually makes a lot of sense, because the thing about the Arctic in the summer is the length of the day and therefore the amount of direct solar radiation. In that situation, the importance of the GHG effect is diminished. Switch that to the long winter, and low incidence spring and fall, and suddenly GHGs become important. Of course, Lindzen knows that, even if you don't. Second... as explained, summer temperatures can appear more normal than otherwise because a whole lot of that energy is going into melting ice instead of raising surface temperatures. It takes 80 times as much energy to melt one gram of ice as it takes to raise 1 gram of water 1˚C. Third... as Albatross pointed out, what temperatures are really being measured and considered? We don't have good coverage of the Arctic, so you can't even really say that what he's saying is true. The bottom line... Arctic ice is melting in an alarming fashion, so I don't need a thermometer to tell me that the Arctic is warming, and anyone like Lindzen who is sticking a thermometer in your face and crowing "see, see, ignore that CO2 stuff, it's nonsense" is obscenely manipulating you. -
Flakmeister at 10:02 AM on 15 March 2012New research from last week 10/2012
JE Solheim as in http://junkscience.com/2012/03/14/solheim-the-long-sunspot-cycle-23-predicts-a-significant-temperature-decrease-in-cycle-24/ and yes that Humlum... Ole! Ole! Seems I just got my self banned from junkscience for having the temerity to rip apart (using facts nicely, I might add!) every posting on oil/energy over the past few days... I guess you are not allowed to respond to Milloy calling Obama a Marxist... And saying Inhofe is a hypocrite for not adhering to Isiah might not of helped... ;-) -
adelady at 09:37 AM on 15 March 2012Roy Spencer's Bad Economics
"Now we are at a point where we are trying to persuade people that radical changes need to be made to our energy infrastructure--in effect, our fundamental way of life." I disagree strongly with that. People don't see the infrastructure at all when considering their "way of life". All they want is for the power to come on when they hit the switch. And if building or retrofitting housing with higher standards of insulation and other energy saving measures results in more comfortable lives with lower power bills, that's a win. In rural areas, communities often favour wind and similar renewable power generation because it keeps jobs and livelihoods in areas which would otherwise lose population. -
adelady at 09:17 AM on 15 March 2012Roy Spencer's Bad Economics
"The alternative, more half-measures and a general paralysis, will otherwise likely persist until the 2016 election cycle." I have no idea how your political scenario might pan out this year and the next. But there will certainly be at least one El Nino year between now and 2016 and there will probably be a near-as-dammit-is-to-swearing ice-free summer period in the Arctic by then. A hot period will have horrible fodder from some places for TV news - a re-run of Russia or Europe's worst summer, Australia and/or the Mediterranean and/or California burning or poor old Pakistan getting drowned out again - will have an effect. And if there are any repeats of hurricanes dumping unprecedented rainfall in those unexpected more northerly regions of the East Coast of the USA, the power of those messages will be mutually reinforcing. In my jaundiced view, getting the message in the second decade of this century will be on the too little, too late spectrum. But I suppose it's not as bad as the next decades. -
Trent1492 at 09:09 AM on 15 March 20122012 SkS Weekly Digest #10
@DB, Just want to give you a heads up that the Talk Origins people who combat creationism in the U.S have a wonderful index of debunking articles. I have found it a joy a to navigate. An index like that would be a real help. -
Don9000 at 08:51 AM on 15 March 2012Roy Spencer's Bad Economics
Why Roy Spencer holds his position is not clear to me, but the appeal of his argument to many working and middle class Republican (and I'm sure many similarly situated Democratic voters) in the US is readily understandable: They already have suffered serious drops in their living standards from changes that have impacted American society over the last thirty or forty years. Some of these changes, such as free trade, were claimed by the government to be good for working class people, but that has not turned out to be true for many people, including many middle class voters. Now we are at a point where we are trying to persuade people that radical changes need to be made to our energy infrastructure--in effect, our fundamental way of life. And the plain truth is that the changes that are necessary will result in economic pain. Arguing that suffering the pain now, rather than experience much more pain some nebulous number of years or decades down the road is a very hard sell. Remember, the same part of the political spectrum that is in denial about the threat posed by climate change is also opposed to big government in a general sense. Many of the people in this segment of society have bought into the fantasy that if only big government can be dismantled, they will suddenly be free to become fabulously wealthy. With thoughts like these dancing in your head, I suspect it is much easier to listen to people like Spencer (including Rush Limbaugh, and the various other voices on that side of the debate) who, claiming to speak from positions of impeccable authority, argue we should not change rather than go down a path whose advocates admit has costs associated with it that are measured in the trillions of dollars. Many of the things that scare me about global warming are also less likely to scare people focused on narrow self-interests, like the rising cost of gasoline, which somehow Obama is being held responsible for. For example, only about 1% of Americans make their living as farmers, so those who don't have intimate connections to farming are not likely to worry about the predicted future the US faces of a much higher frequency of agricultural droughts for almost the entire lower 48 states if things keep moving along on the present course. Similarly, few residents of interior states have immediate reasons to worry about the potential for a future global sea-level rise of a meter or so by 2100, and some of them probably think that many residents of cities like New York, Boston, Washington, DC, New Orleans, and Miami may well deserve to be deluged. Also, when politicians like Obama advocate investing in alternate energy sources, few Americans can see a direct benefit to having wind turbines installed in areas they consider scenic when they know that the installation will also directly result in a higher cost at their electric meters, and even fewer like the idea of having a nuclear power plant built in their proverbial back yard. Finally, when anyone tries to argue that the best way forward is to impose a carbon tax, most of these Americans hear that dirty three letter word and know they don't agree with anything that a person advocating such a step may say. Many people in the US, from all points in the political spectrum, including, I suspect, many politicians, are quite simply woefully lacking in the knowledge or interest necessary to assess the merits of the debating points in this particular argument, and thus the person who offers up a rosy scenario where radical change is unnecessary has a huge advantage. For these reasons, I feel Spencer's message has a deep appeal. This situation points to the profound dangers present in a democracy where the voters are poorly informed. Since the US is a giant in this quagmire, I believe a necessary step is for President Obama, either with the cooperation of the Congress, or without it, to begin an official and extensive formal review of the science and economics, bringing in experts from all different fields to testify about the science and the consequences of action and inaction, etc., and he should by all means include accredited dissenters since we want and in fact need their bad arguments to be exposed, but the initial goal of this lengthy course of public hearings would be to get on the record the best arguments from both sides in a public forum that the deniers cannot simply dismiss as the workings of the UN. In short, I think we should want our scientists to debate the other side's scientists quite visibly and loudly. Over the course of 6 months or so of hearings and testimony that explores all the details we are familiar with on this site, with interim reports being released on a steady basis, and as much televised coverage as possible via C-SPAN and various news outlets, Obama could do a lot to get the debate moving. I even think this kind of bold action may be necessary if he hopes to win a second term, since the half-measures he's adopted or advocated to date have of course made it look like he wants to do more if given the chance, so the opposition uses that suspicion to gin up its base, even while he holds back the really weighty other shoe. I'd rather have Obama damned for something he did than condemned to failure because he's afraid to even open up the debate. For that matter, if he barely wins a second term without bringing this debate into the open before that victory, I suspect he will not be able to do much at all given the gridlock in Congress. For these reasons, I feel the debate in the US desperately needs to come out into the full glare of political daylight, since even if it costs the Democrats the Senate and the White House this fall, the seeds of change it will plant will be increasingly hard to ignore as climate change proceeds apace. The alternative, more half-measures and a general paralysis, will otherwise likely persist until the 2016 election cycle. -
From Peru at 08:30 AM on 15 March 2012Roy Spencer's Bad Economics
About figure 1: -When was it taken?(what month of the year? seasonality is important because a lot of pollution comes from fires during the dry season in tropical forests ) -Roy Spencer blames the wind above the dust for the small particulate matter(PM) 2.5 pollution, but that should liberate medium-sized particulate matter, not small PM 2.5. And the Spencer statement is inconsistent with the fact that other deserts (Western North America, Namibia-Kalahari in South-West Africa, Gobi Desert north of China, Central-Western Australia) there is little PM 2.5 pollution. So: What is the source of of PM 2.5 pollution in the Sahara Desert and Arabic desert? -
Henry justice at 08:21 AM on 15 March 2012Glaciers are growing
[DB] I disagree, there is an active under the ice volcano in the area where the warming is graphically shown. Your reference did not address Antarctic underice/sea volcanoes.Moderator Response:[DB] "there is an active under the ice volcano in the area where the warming is graphically shown"
Citation, please? Also please quantify how much heat is melting how much ice causing how much warming. Please include in your citation the paper the peer-reviewed study you cite appeared in.
"Your reference did not address Antarctic underice/sea volcanoes"
Quite frankly, it doesn't need to. Volcanoes are not magical creations possessing the higher intellects needed to discern between hemispheres, like say, polar bears and penguins.
[Not DB] In my opinion, volcanoes are not really on topic for this post, which focused on the plain and simple fact that glaciers overall are not growing. Evidence for and against that particular point is welcome. -
Trent1492 at 08:19 AM on 15 March 20122012 SkS Weekly Digest #10
@Scaddenp, No problem. The irony is that about an hour ago I did the same thing on some poor soul over at Scientific American, but with more venom. I misread the commentator's sarcasm as being earnest and immediately unleashed a barrage of out raged rhetoric. It was not until I actually read the thread that I realize the mistake. I think we are all a little traumatized by this wave of anti-science stupidity and need to take a few breaths and moments before hitting the reply button. -
Henry justice at 08:15 AM on 15 March 2012Glaciers are growing
scaddenp: Thanks for your comment and reference. I believe action was taken to replant the forest. Sadly, it may prove very true that it will not do the trick. Sublimation may indicate a change in atmospheric air streams to a drier air. Glacier melting from increased warming via conduction is certainly a factor, not necessarily air temps increases. For the last 200 yrs the slight upward temp trend has been declared at about +0.5 deg C. Increase in IR (i.e.8-15 microns) will cause 10 deg F insol (Bragg Equation foldback effect) and yes, that will cause melting. But that is for snout ice, not hard ice underneath the glacier, which might be at a much lower temperatue. So, what are we talking about for all these melting glaciers, softer snout ice or hard glacial ice? -
Trent1492 at 08:08 AM on 15 March 20122012 SkS Weekly Digest #10
@JH, It is new as a new pseudo-fact. In some ways it is simply a re- manufacturing of the CO2 can't cause much or none at all warming. I had never seen that argument before and so I thought you guys would want to be alerted to it. Off topic: I do not know if this would be worth the time and effort but is there anyway you guys could consider categorizing the climate myths alphabetically and by topic such as Cryosphere, Greenland, etc? I think the more ways individual articles are cross referenced the easier they will be to find.Response:[DB] Myths are categorized also by Taxonomy. The alphabetical thing will be taken under advisement, thanks!
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Henry justice at 07:57 AM on 15 March 2012Glaciers are growing
Tom Curtis: Antarctic warming- Could some erupting undersea volcanoes in the warming areas of West Antarctica be the cause of the warming there?Response:[DB] There simply is no evidence to support that assertion. And much to the contrary (example here).
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scaddenp at 07:56 AM on 15 March 2012Glaciers are growing
So Henry, perhaps you would like to look at Mt Kilimanjaro for some discussion on this. Also: "Many glaciers have sublimated even when the temperature above the glacier was still below freezing" Now why do you think this is? You seem to be trying to say that glacier melting isn't a sign of temperature warmings, but actually temperature rise is symptom of increased surface radiation. Might not that have something to do with the ice melt. -
scaddenp at 07:44 AM on 15 March 2012Roy Spencer's Bad Economics
jzk - I agree that China and India need to expand energy production but poverty-stricken countries are also most vulnerable to climate change. For this reason, the West has to reduce CO2 consumption and do it very hard. You can encourage non-carbon energy generation in other countries by whacking a carbon tax on incoming goods at the border - just as an example. Good luck getting China and India on board if the West - responsible for most of the extra CO2 in the atmosphere - arent willing to make major reductions. -
New research from last week 10/2012
Flakmeister - Which paper, which Solheim? Note that there is a JE Solheim who frequently works with Dr. O. Humlum, whose papers have been roundly criticized and refuted. -
Flakmeister at 07:29 AM on 15 March 2012New research from last week 10/2012
Whats with this Solheim paper making the rounds??? I did a quick perusal and it strikes me as mathurbation combined with perhaps cherry picking the data... Why did they not apply it to the whole globe??? -
Tom Curtis at 07:22 AM on 15 March 2012Glaciers are growing
Henry justice @20, you are assuming that Otzi died in an ice free area that later became glaciated. That would be near impossible, and is contrary to the evidence. Rather, he died above the permanent snowline, and has remained above the permanent snowline ever since. -
dana1981 at 07:17 AM on 15 March 2012Lindzen's London Illusions
jzk - he didn't ignore the ice melt, but he sure did do his damndest to make it look small (Figure 2 in the post above). -
Albatross at 07:16 AM on 15 March 2012Lindzen's London Illusions
jzk @68, "Going through each year of the Arctic daily mean temperatures seems to bolster Lindzen's point that the summer temperatures are not changing while there is great variability in the winter temperatures." I find it incredulous that someone is defending Lindzen, especially when they appear to not grasp the obvious problems with his argument. First, those data are for 80 N, they are not representative of the Arctic. Second, they are model data and it has been shown that the ERA_40 data that he is showing have problems with the temperature. Third, the theory and scientific literature on Arctic amplification is very clear that the impacts of the ice loss should be and are felt primarily in between the fall and spring, with impacts that carry over into the next melt season. For exanple, Screen and Simmonds (2010), "The Arctic region has long been expected to warm strongly as a result of anthropogenic climate change owing to positive feedbacks in the Arctic climate system." Also, the reason that the warming is less during the short summer (note, not absent as Lindzen claims) is because there are changes in radiative frocing b/c of changes in cloud cover. Again fro Screen and Simmonds, "In the Arctic, this greenhouse effect dominates during autumn, winter and spring (Fig. 3), in agreement with in situ observations. In summer, the shading effect dominates in the lower-latitude regions of the Arctic basin whereas north of 80 N the two competing effects approximately cancel out (Fig. 3c)." So Lindzen's entire premise is wrong. Lindzen is also not providing his audience with a complete picture, nor is he providing any caveats as a good scientists should do. Additonally, research has shown that the length of the melt season is increasing significantly, see here. All these data and facts fly in the face of Lindzen's claims.Lindzen is playing games and doing his best to mislead people-- sadly that seems quite easy to do. -
Henry justice at 07:00 AM on 15 March 2012Glaciers are growing
oneiota: Glaciers may or may not be a good indicator of climate change. Uniform melting of mountain glaciers, excluding Greenland and Antarctica, is an indicator. About 65% of all mountain glacial ice worldwide as noted above, is found in Canada. So, if Canadian glaciers are all melting, in unison,then, yes, a good indicator of global warming. It is my understanding that Mt Kilimanjaro's source of moisture for glacier building was a forest at its base, which had been cut down, so the glacier disappeared. Many glaciers have sublimated even when the temperature above the glacier was still below freezing. Can someone vouch for the temps over each of these declining glaciers? That data appears missing? So, the many causes for glacial decline are not even mentioned. -
jzk at 06:43 AM on 15 March 2012Lindzen's London Illusions
Sphaerica@74, If all that is true, you ought to be able to calmly dissect his arguments. Going through each year of the data, it sure does seem to me that his premise is true. Summer temperatures don't seem to be changing while there is much variability in the winter temperatures. He didn't ignore the ice melt, nor any of the temperatures. His conclusion that because summer radiative forcing doesn't seem to be changing CO2 must not be a factor is subject to debate. However, nothing in your post @74 adds any clarity to this. -
Henry justice at 06:42 AM on 15 March 2012Glaciers are growing
muoncounter:The finding of the ice mummy, Otzi, does this indicate the present melting of the glaciers are now back to the level where they were when this mummy was first frozen? So, this would represent natural climate variability. -
Composer99 at 06:32 AM on 15 March 2012Roy Spencer's Bad Economics
jzk: The physics quite clearly shows that action to reduce CO2 emissions must be taken, contra Roy Spencer's claims. The economics quite clearly show that (a) based on the current and expected costs of climate disruptions, action to reduce CO2 emissions must be taken and (b) such action will not cause economic harm to polities which undertake it, again contra the claims of Dr Spencer. The ethics of the situation (following from the disproportionate burden of climate change impacts) quite clearly show that "old rich" countries have an obligation to take the lead in reducing emissions (and as Rob noted, emissions in developing economies are often "outsourced" developed-world emissions) - yet again, contra the claims of Dr Spencer. Developing countries are designing & implementing their own emissions control regimes, so they will catch up. When there is a consilience of imperatives for action, endorsement by several bodies of relevant experts, and the means to track national emissions - which you acknowledge given you cite them in #22 - then there is both the obligation to proceed with emissions reductions, and the practical means of showing who is undertaking them and how effective they are. -
Bob Lacatena at 06:27 AM on 15 March 2012Lindzen's London Illusions
jzk, Come on. How stupid do you think people are? Implying that summer temperatures are not changing, while ignoring the rapid, growing ice melt, is cherry picking. Suggesting that the false dichotomy of summer versus winter temperatures is all that applies is pathetic. His entire position is pathetic, as are all of his presentations and arguments. Lindzen is a joke, a bad one, and history will not treat him kindly, if it remembers him at all (which it should). -
scaddenp at 06:17 AM on 15 March 20122012 SkS Weekly Digest #10
Trent1492 - my humble apologies. I see your point and I agree that the tone of my response was completely inappropriate. It was a knee-jerk reaction without really properly at the context. -
Rob Honeycutt at 06:01 AM on 15 March 2012Roy Spencer's Bad Economics
jzk... I'm certainly not an expert on the matter. I know what I've seen, which I believe is probably a tiny snapshot of the overall picture. But my observations are this... First, I'd say farmers in rural China are living pretty much as they have for many hundreds of years, at least. The region I visited was central China, outside of Chongqing, where my wife is from. The home we visited was similar to this. It was a multi-family home. The first floor rooms were all only three walls. No heating. These were the living and dining areas. I don't remember off hand if they had electricity. I think they did not. A side room on the first floor was a kitchen with two extra large woks for cooking. Fuel for cooking was coal. The surrounding farm was very well kept. They were very proud of the quality of their produce and we had fun going out into the gardens with the kids to help pick some of the food that was cooked. The people are very cheerful and happy, but I don't think it's lost on them that they are poor. They're clearly not suffering like poor people in other regions. But they've seen what other family members have achieved in moving to the cities and, I suppose, some are inclined to such aspirations and others are inclined to remain with the lifestyle they've always known. My wife and I have been married 10 years and she's very open to discussing the good, the bad and the ugly. I don't hear horror stories about factions of the family that live on the farms. I hear more horror stories about dealing with small town government officials who make it impossible for anyone to accomplish anything. The larger cities are more reasonable with respect to that. I know the government is intent on getting more people off the farms and into urban housing. I don't know any stories of this happening forcibly. I hear stories about farmers who do sell their leases back to the government (there is no private ownership, just renewable leases) and make a pot of money. They often have a hard time coping with the change. -
Andy Skuce at 06:01 AM on 15 March 2012Roy Spencer's Bad Economics
bill@2 One example of a left-wing climate denier is Claude Allègre who is a scientist, is a member of France's Socialist party, was Minister of Education from 1997-2000 in Lionel Jospin's cabinet and is probably the most prominent climate "skeptic" in France. He was debunked by RealClimate in 2010. Allègre his fellow fellow-traveller, Vincent Courtillot, were debunked in 2007, again in RealClimate. Both Courtillot and Allègre are, in their field--ahem, geology--genuinely distinguished scientists and they are both still active. I attended a talk given by Allègre at the 2011 AGU Fall Meeting and spotted Courtillot in the audience. -
jzk at 05:53 AM on 15 March 2012Lindzen's London Illusions
Sphaerica@72, Cherry picking is when favorable evidence is chosen while unfavorable evidence is excluded. Which evidence was excluded? I recall him discussing both the summer and winter temperatures. -
Bob Lacatena at 05:09 AM on 15 March 2012Lindzen's London Illusions
70, jzk, My point is that focusing on summer temperatures in the Arctic, while the ice is clearly melting further and further back each year, is disingenuous. His statement is one of misdirection with no merit. A discussion of summer temperatures is a cherry pick designed to mislead. There are many factors that affect summer temperatures, not the least of which is that melting the ice, a huge danger, is helping to hold those temperatures down. -
Eric (skeptic) at 05:02 AM on 15 March 2012Declining Arctic sea-ice and record U.S. and European snowfalls: are they linked?
My opinion on solar cycles has changed a bit over time- I always thought that low solar would affect weather more than climate, but there are many influences in different directions even for weather, never mind climate. Anyways, it is OT for this thread. The sea ice influence is quite weak IMO and won't do much to influence weather patterns compared to other factors. The more obvious connection is that the weather patterns dictate where the sea ice gets melted and where it gets compacted (usually the same areas). This year that was the Barents sea. Although the warm anomaly could essentially have created a high to pull cold air down into Eastern Europe, it is more likely that other effects caused the pattern of the high which warmed the Barents sea and pulled cold air into eastern Europe. -
jzk at 05:01 AM on 15 March 2012Roy Spencer's Bad Economics
Rob@23, What are your thoughts about the "agrarian lifestyle?" -
Rob Honeycutt at 04:39 AM on 15 March 2012Roy Spencer's Bad Economics
Bruce and jzk @ 19 and 22... I always like to point out that a large portion of China's per capita carbon emissions are the result of being, essentially, as "factory state." They're mostly making products for western consumption. Around two thirds of Chinese are still living an agrarian lifestyle. (I had the wonderful opportunity once to attend a rural Chinese wedding and see how farming was done and see the setting in which these people live.) There are a certain fraction of Chinese who have attained US style first world status and I'm sure their personal carbon emissions are similar to anyone in the west. It's just not the case for most middle class Chinese. I hold that a large portion of those per capita Chinese emissions should be assigned to the west since they are primary a result of us "out sourcing" our carbon emissions. Apologies for veering off topic. -
Esop at 04:27 AM on 15 March 2012Declining Arctic sea-ice and record U.S. and European snowfalls: are they linked?
True that there is some merit to it (Lockwood, etc), but this winter, the AO went very negative for a while, despite the much higher solar activity than the two previous winters. Interestingly, the NAO stayed positive when the AO went negative. They are normally closely linked. The deniers long tem forecast for the coming years is strong cooling due to the proposed weak solar cycle, but when we break the global temp record in either 2013 or 2014, they will explain that by pointing to high solar activity. They can do this because the press rarely points out their failed predictions. When 2010 broke the record, hardly anyone asked for an explanation for the failed denier predictions from 2008 of rapid cooling from that year.
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