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muoncounter at 12:12 PM on 10 May 2012Turbines in Texas mix up nighttime heat
It seems this story started a few months ago: How the 'windfarms increase climate change' myth was born The article that really gave this idea a push online was published on Sunday evening [Feb 5] on the Daily Mail's website. It was delivered with the headline: "Wind farms can actually INCREASE climate change by raising temperatures and causing downpours, warn academics." The original study is Roy and Traiteur 2010: Data from a meteorological field campaign show that such wind farms can significantly affect near-surface air temperatures. These effects result from enhanced vertical mixing due to turbulence generated by wind turbine rotors. The impacts of wind farms on local weather can be minimized by changing rotor design or by siting wind farms in regions with high natural turbulence. -- emphasis added So this 'windfarm heat island' is weather, not climate. I guess we can't expect the denialosphere to know the difference. The Guardian goes on to describe how the original author's work was misused to suit the Daily Mail's preconceived notions. "I am already getting emails on this. I will have to categorically say that the headline is not an accurate representation of my work. But I guess there is little I can do now." Sounds like the recent 'ikaite in Antarctica means MCA/MWP is global' flap. A pattern emerges that is disturbingly familiar, if you know your Ingsoc. -
cliffd at 11:42 AM on 10 May 2012101 responses to Ian Plimer's climate questions
@ 2. I don't think Plimer actually sent copies of his book to schools; I think it was the Institute of Public Affairs, an Australian right-wing "think-tank" which does not disclose its donors. -
Sceptical Wombat at 11:30 AM on 10 May 2012rbutr Puts Climate Information In Front of Those Who Need It Most
Shane That's good to hear. -
bill4344 at 11:00 AM on 10 May 2012101 responses to Ian Plimer's climate questions
Many of the questions and answers in Professor Plimer’s book are misleading and are based on inaccurate or selective interpretation of the science
chriskoz, the format of Plimer's book - and it is a book - is to pre-arm the kiddies with the 'correct' answers to the questions, that they then may go well-equipped to waylay their potentially errant, overworked and warmism-addled teachers with a succession of 'gotchas!' All for the greater good, of course. Hence this counter-response from the Australian Government. And hence I think your 'acknowledgement' is rather too kind. Should you wish to subject yourself to the original it's available here. (I did get a chuckle when I observed the second publication in the 'Customers who bought this product also purchased...' list! ;-) ) Interestingly, Graham Readfearn reports that review copies were refused to some news outlets. -
bill4344 at 10:30 AM on 10 May 2012Turbines in Texas mix up nighttime heat
Like 70rn I find it hard to credit that many of those spinning this are doing much more than going through the motions. (There's a hell of a lot of whistling in the dark going on among the contrarians at the moment, and, to further mangle some metaphor, any straw must be not only clutched, it must be brandished aloft and proclaimed as a mighty oaken bough!) But who's really fooled? There was even a higher-than-usual count of 'hang on a minute' responses when this came up over at WUWT. You'd really have to be crazy-like-Fox to swallow the 'windfarms cause warming' tosh. But don't they just hate the windfarms? With a passion? The level of hysteria is palpable, and more than a little unsettling; the fervour required is, after all, inversely proportional to the inherent inoffensiveness of the technology. Why? Because the turbines represent the possibility of a workable future that simply must not be, lest the 'skeptic' be revealed as an irrelevant anachronism, and their world-view be blown to the winds. Spend some time at WUWT and Bishop Hill, and discover that, for some, any success of any renewable technology is an existential threat, so much so that they'd rather that the future be impossible. -
Nick Stokes at 08:08 AM on 10 May 2012Turbines in Texas mix up nighttime heat
I don't think Zhou (as reported) does have the fluid dynamics right. There's nothing to "bring warm air down to the ground". In an uninterrupted flow over a flat surface you get a fairly thin boundary layer with a more uniform velocity above. The boundary layer has a large velocity gradient and transfers heat very well; the uniform layer transfers heat poorly. Making the flow more turbulent enhances heat transfer in the uniform layer. But it thickens the boundary layer, which diminishes heat transfer there. A lot of the thinking about inversion layers (as here) is misplaced. It relates to a calm atmosphere. But then the turbines aren't doing anything. My view is that the effect is heat generated from turbulence - the part ofd the wind KE that was not converted to electricity. The scale matches. A wind farm generates enough power for a small town, and that power can create a UHI. The turbines are probably less than 50% efficient overall, so equivalent heat is also released at the wundfarm. You're seeing a UHI. But it isn't nett warming. The KE of the wind was always going to be converted to heat somewhere. The turbines move the location of the conversion. -
DSL at 07:32 AM on 10 May 2012There is no consensus
YellowElephant, you can easily tell when a consensus has been reached by working scientists and scientific organizations. Consensus occurs when scientists stop spending time, money, and energy to test hypotheses within an area. People stopped working on testing the radiative properties of atmospheric gases decades ago. The radiative properties of CO2 are well-established. Now, you might get the odd working engineer or geologist who doesn't understand the idea of pressure broadening, and who will make a claim like "CO2 effect is saturated!" The basics of AGW are old hat, even though blog sciency types keep making bizarre claims about them. Actual science has long since moved on to build successfully on those basics. As far as the human element goes, I've never heard an argument from a working scientist that makes the claim that we are not the source of the additional atmospheric CO2. I've read the opinion and work of hundreds and hundreds of working scientists who readily accept the mass balance argument corroborated by isotope studies. If you think you have evidence that there is not a consensus, present it. Change my mind. I take it that you have no time, energy, or training to work on understanding the science yourself. If that is the case (as it is with most of the general population), ask yourself why you believe what you believe. Why believe source X (who argues with great passion but no evidence) rather than source Y (who argues with evidence from a broad range of scientific disciplines). -
funglestrumpet at 07:28 AM on 10 May 2012Lindzen's Clouded Vision, Part 2: Risk
If you listen via BBC iPlayer 'listen again' feature to 'Costing the Earth', BBC Radio 4, U.K. time 20.00 today (9th May), it will break your heart. It is all about coal, need I say more? I just hope that the denialati are called to account for their actions, especially Monckton. -
scaddenp at 07:21 AM on 10 May 2012Why Are We Sure We're Right? #2
"If you left any doubt consult a physicist" - that's a funny comment to leave on this forum! As Riccardo says, your statements here clearly show that you are criticizing something you havent understood. The responses have been trying to find out where you have gone wrong (eg do you understand why lapse rate is important?) and to encourage further study. It would be far more constructive if you took some time to study what the theory actually says instead of what you think it says. You can get plenty of help here on that. -
Riccardo at 07:13 AM on 10 May 2012Two Centuries of Climate Science: part two - Hulburt to Keeling, 1931- 1965
Fleming's book is a good read, The disagreement between Fleming and Weart on Fourier is marginal. It's true that Fourier was more interested on the temperature of space; nevertheless the idea of the role of the atmosphere is his. Callendar, instead, is rarely quoted despite he was the first (to my knowledge) to try to put up a global surface temperature record and to show the concomitant increase of CO2 and temperature. Maybe it's because he was wrong on several accounts. Archer and Pierrehumbert included one of his articles in their "The Warming Papers". -
Composer99 at 07:09 AM on 10 May 2012Prudent Risk
Tom, thanks for the clarification and my apologies for the misinterpret to Paul Magnus. -
jsam at 06:57 AM on 10 May 2012It hasn't warmed since 1998
Thank you, Daniel. I've seen worse in a thread, for sure. But, yes, agreed, I've also seen much, much better. :-) -
John Russell at 06:25 AM on 10 May 2012Turbines in Texas mix up nighttime heat
Everyone who grows trees -- as I do -- knows that large structures create microclimates around them. I can take you to areas in my woods where trees planted ten year ago are twice the height of those in other areas, even though they were all planted at the same time. The difference is that the first trees were planted in the shadow of a group of much taller, mature trees and thus they've been exposed to warmer temperatures and less wind than those in the open. The same also happens when buildings create a wind shadow. The fact is, I'd have been astonished if it had been shown that tall structures like a wind farm didn't take energy out of the air and create microclimates. More on micro-climates here. -
Daniel Bailey at 06:19 AM on 10 May 2012Lindzen's Clouded Vision, Part 2: Risk
@ Paul Sokolov et al 2009 (blogged on by Romm here) shows all 400 model runs exceeding 2C by 2100. Fig 8b shows SAT exceeding 2C before 2050:
(middle red line above is ensemble mean for Sokolov)
Betts et al 2011 (blogged on by Romm here), published in the Royal Society A, details a 4C world by 2070...
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John Hartz at 05:30 AM on 10 May 2012Lindzen's Clouded Vision, Part 2: Risk
@les #7 I personally endorse the strategy for communicating the reality of manmade climate change set forth by Bill Blakemore of ABC News (US) in his recent essay: “ ‘Hug the Monster’ for Realistic Hope in Global Warming (or How to Transform Your Fearful Inner Climate)” -
Composer99 at 05:26 AM on 10 May 2012There is no consensus
There is obviously not consensus since not all scientists agree on whats happening or whats causing it.
Perhaps you can clarify here, YellowElephant, as to which scientists disagree. Are they climatologists or scientists in closely-related disciplines? And what is the basis of their disagreement? To my knowledge, even abject contrarians such as Spencer & Lindzen agree that heat-trapping gases (CO2, CH4, H2O, etc) cause global warming and that humans have emitted significant amounts of long-lasting heat-trapping gases. Their points of disagreement with the mainstream position lie elsewhere. When over 97% of scientists with relevant expertise agree on the basics of AGW and, as far as I am aware, every major national scientific body (NAS, Royal Society, &c) agree with the major conclusions of climatology as identified by the IPCC, and when even contrarian scientists agree with the basics, then IMO there is no "large debate" going on at all. Instead, there is what medical blogger Orac calls a 'manufactroversy'(*), where non-scientific interests attempting to defend or upend a status quo rely on various contrary arguments, increasingly of poor quality, to create the illusion of a genuine scientific debate. ----- (*) I'm not certain that Orac coined the term, however his use of it is the first I am aware of. (Orac blogs elsewhere under his real name, so my pronoun use is correct.) -
John Hartz at 05:06 AM on 10 May 2012Lindzen's Clouded Vision, Part 2: Risk
@Paul Magnus #16 The new Club of Rome report, 2052: A Global Forecast for the Next Forty Years, by Jorgen Randers is actually a 304 page book that will not be available until Jun 1, 2012. The report is summarized in the article, “New Report issues a warning about humanity’s ability to survive without a major change in direction” posted on the Club of Rome’s website. The article also contains information about its publication both as an e-book and as a traditional hard-copy book. To access the article, click here . -
dana1981 at 04:51 AM on 10 May 2012There is no consensus
YellowElephant @507 - you just contradicted yourself, first saying consensus is "a large majority", then saying there is no consensus because "not all scientists agree". Which is it, a majority, or unanimity? You were right the first time - consensus is a majority. In the case of man-made global warming, it's a vast majority (over 97% of scientific experts in agreement), as discussed in the post above. -
dana1981 at 04:49 AM on 10 May 2012Lindzen's Clouded Vision, Part 2: Risk
Paul - we do have a fairly detailed analysis. Click the first link in the 'What's Dangerous?' section. A lot of it has to do with what's policitically feasible, since ultimately it's a policy goal. I think most groups would agree that zero additional warming would be the best goal, were it feasible to achieve. -
Paul Magnus at 04:49 AM on 10 May 2012Lindzen's Clouded Vision, Part 2: Risk
John @ 6 cant find any links to report.... "Research last month by the University of Oxford and Princeton University said global warming was likely to be between 1.4 and 3 degrees by 2050, but that 3 degrees was at the upper end of what was likely." http://www.reuters.com/article/2012/05/08/us-climate-clubofrome-idUSBRE8470JE20120508 -
YellowElephant at 04:46 AM on 10 May 2012There is no consensus
Consensus means that a large majority of people, or in this case scientists, agree that something is happening. There is obviously not consensus since not all scientists agree on whats happening or whats causing it. The large debate going on here is proof of that fact. Obviously there isn't enough information because science is fact and if the evidence was in there would be a consensus. Science is clear and if there was proof that the world was getting warmer or even not getting warmer scientist would agree and make up there mind like they did with gravity! Thank you -
John Hartz at 04:37 AM on 10 May 2012Turbines in Texas mix up nighttime heat
As detailed in the following article, the ultra-conservative spin machine in the US has embarked on a massive campaign to discredit clean energy, especially the use of wind turbines. “Conservative think tanks step up attacks against Obama's clean energy strategy”, The Guardian (UK), May 8, 2012 -
Paul Magnus at 04:36 AM on 10 May 2012Lindzen's Clouded Vision, Part 2: Risk
Really would be useful if we had a dletail analysis on why we came to agree on the 2C threshold. It is amazing that this was not challenged until around 2005 when Hansen started to look at it more closely. One gets the feeling that we are sticking to it because the 1-1.5C is now impossible and if we do accept that 2C is in fact way too much we will lose hope. Considering what is happening in the arctic and the acceleration of global extreme weather and climate events/changes, 2C is catastrophic. We are looking at around at least 3C and counting, depending on what action we take. The thing is once we get up to around 1C, climate disruption is going to ensure that our economic engine grids to a a halt. So interesting times.... -
CBDunkerson at 04:34 AM on 10 May 2012Two Centuries of Climate Science: part two - Hulburt to Keeling, 1931- 1965
Jim Powell, yes Fourier thought that cosmic radiation (i.e. "the temperature of space") was the most likely reason for the increased planetary warmth he detected... but we now know he was wrong on that and his ideas about something in the atmosphere holding in the heat closer to the truth (though his description of how that might happen weren't how the greenhouse effect actually works either). I don't see this as disagreeing with Weart... it's just an additional bit of information. Fourier suggested several possible explanations for the extra heat... Weart just concentrated on the one which came closest to being correct rather than the one Fourier himself thought most likely. -
jsam at 04:14 AM on 10 May 2012It hasn't warmed since 1998
Composer99 & Daniel - thank you both for your responses. I'd pointed him to other data sources and he dismissed them out of hand with comments such as "extrapolation is just guessing". So I've now simply disengaged. He expected me to trawl through is dataset and interpolate his method, but he won't acknowledge the peer-reviewed material. Life's too short. Daniel, your comment about Mike's leanings - I did a Google of his name and variants and some likely qualifying terms - and came up with nothing (unless he runs Arizona U). I've missed summat - how did you reach that very possible evaluation.Moderator Response: [DB] Try Patrick Lockerby's blog, The Chatter Box. Look for Mi Cro in the comments thread here... -
muoncounter at 03:48 AM on 10 May 2012Turbines in Texas mix up nighttime heat
"At night the Earth's surface cools quickly" That statement needs modification when talking about Texas. Sweetwater, TX is in the midst of the wind belt (and is within the geographic rectangle of Figure 1). In August, peak daytime temperature (~ 33 C on average) is reached in the late afternoon (5pm) and overnight lows, at about 6am, average 22C. That's a change of 11C in 13 hours. In January, the maximum is also at 5pm and the nightime low at 5am, but the daily temperature range is -1 - 15C, yielding a slightly higher cooling rate of 14C/12 hours. It cools more rapidly in the winter because the overnight humidity is lower - and it did that before there were any wind farms. Another important observation is that these wind turbines are on flat-topped ridges with a local topographic relief of 100 ft relative to the valleys below. The hilltops are bare pasture; the low ground tends to be covered with brush, suggesting different warming and cooling rates to begin with. I would take issue with the 'downwind' claim, as wind directions can vary considerably - especially around topography. -
Jim Powell at 03:36 AM on 10 May 2012Two Centuries of Climate Science: part two - Hulburt to Keeling, 1931- 1965
In addition to Weart's book and website, I have run across another valuable resource, Historical Perspectives on Climate Science by James Rodger Fleming. He does not agree with Weart in every detail. Here is the way Fleming ends his section on Fourier: "For Fourier, the "temperature of space" was much more important than the greenhouse effect in controlling terrestrial temperatures." Fleming gives Callendar more credit than most authors I have read. He has also written a biography called "The Callendar Effect." -
dana1981 at 02:53 AM on 10 May 2012Turbines in Texas mix up nighttime heat
This particular myth dovetails two of the denialists' favorites passtimes - attacking renewable energy, and attacking climate science. So it's not at all surprising that they jumped all over this myth. -
Albatross at 02:53 AM on 10 May 2012Turbines in Texas mix up nighttime heat
MarkR, That is a very interesting hypothesis that you present! -
Albatross at 02:49 AM on 10 May 2012Turbines in Texas mix up nighttime heat
MarkR, Thanks for this post. It is ludicrous (but not surprising) how the "skeptics" are trying to spin this-- they are once again grasping at straws, doing their best to fabricate doubt and create a new meme. As 70rn noted @1, warming is occuring over regions with no wind farms. In fact, the strongest warming is occuring over the Arctic with nary a wind turbine in sight. Additionally, orchard farmers have been using turbines for a very long time to reduce the chance of freezing during the winter. It is well known that the turbulence from the blades causes mixing in the vertical and that at nighttime the turbulence mixes down relatively warmer air from aloft (from the temperature nocturnal inversion to be specific). But this works only at a very local scale and only at night. -
Daniel Bailey at 02:45 AM on 10 May 2012It hasn't warmed since 1998
John, I would invite Mike to examine the BEST data (land-only) available:[Source] 1940, in context, doesn't look all that warm compared to present temps {snip}. I caution you not to expect too much as he's a known ideologue who has bought heavily into that promulgated by the fake-skeptic blogs.
Moderator Response: TC: Ad hominen snipped. -
Sapient Fridge at 02:32 AM on 10 May 2012Satellites find over 500 billion tons of land ice melting worldwide every year, headlines focus on Himalayas
Matthew L, I'm curious as to why you don't like the map projection? Not equal area? Looks like a Miller Cylindrical to me. It's from 1942, but most map projections are older than that. All map projections necessarily have distortion, though some are more pleasant to look at than others. See here for more information.Moderator Response:[DB] Speaking as a former professional nautical cartographer, the intended use of a map determines the projection used. For any global representation the projection choice is not ideal, as one has to represent a nearly-spherical object in a 2-dimensional plane. For global purposes, this is my representation of choice for the oceans:
[Source]
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70rn at 02:29 AM on 10 May 2012Turbines in Texas mix up nighttime heat
I'm fairly incredulous of the idea that such pundits actually /believe/ such arguments - given the obvious ways to disprove it (e.g. the Arctic sea warms sans windmills, etc...). However, it does appear that any straw that can be is being grasped in an attempt to keep the mouthpieces afloat. It does appear that willful blindness is heady draught for some. Over at Roy Spencer's site the april UAH anomaly has been announced at ~ .3 of a degree, complete with the graph of monthly values going back over the last 3 decades or so. One commentator immediately wrote a very convoluted post arguing that the yearly anomaly will only be ~ .05, based on the first three (la nina) months averaged with the most recent value. If he'd bothered to look at the trend graph he was commenting on, he'd have noticed the short term nature of la nina - and that such predictions would be highly unlikely - to say the least. However noisy data seems to attract noisy posters, looking for the starship in the sunshine, so to speak. http://www.periscopepost.com/2011/12/massive-alien-death-star-spotted-parked-by-mercury-possibly/ ^^ I know it's way off topic - but it's pretty reflective of how obvious science is mangled atm. -
Composer99 at 02:21 AM on 10 May 2012It hasn't warmed since 1998
jsam: I would suggest posting direct links to the NCDC online and asking the contributor to explain why the information provided by agency that actually publishes the information he is using stands in such stark contrast to his conclusions. He should be able to explain how his number-crunching is methodologically superior to the NCDC if he expects his conclusions to be persuasive. -
jsam at 01:58 AM on 10 May 2012It hasn't warmed since 1998
I have recently been in an online discussion on another board with a contributor who tells me he has been crunching NCDC statistics. As a result he believes the 1940s were as warm as today. I've shown him GISS graphs and he's waved them away as based upon extrapolated data. He's been kind enough to post his graphs and charts on science20. In response to the recent news of May11-Apr12 being the warmest 12 months, as recently reported, he has posted http://www.science20.com/comments/107815/John_Samuel_%C2%B7_Says. And, in response to my pointing him to GISStemp data showing an increase from 1940-2010 he posted this, http://www.science20.com/virtual_worlds/blog/2011_5th_warmest_year_decades-87380, I've encouraged him to post himself to see if his findings bear scrutiny. He's demurred. Do any of the gentle readers have any comments? -
dana1981 at 01:36 AM on 10 May 2012Lindzen's Clouded Vision, Part 1: Science
Alexandre @43 - join the club! Lindzen's behavior has bothered me for a long time. He constantly says things which any climate scientists should know are untrue (hence our series of posts on his statements). -
Alexandre at 01:22 AM on 10 May 2012Lindzen's Clouded Vision, Part 1: Science
I posted something yesterday, and I don't see it here. I think I got carried away and broke the comments policy... sorry! Anyway, Lindzen's claims that models show higher climate sensitivity than empirical data bothers me a lot. After all, he's a working climate scientist, and can't possibly be unaware of all the papers on sensitivity, both from models and empirical data, that are largely consistent with each other (as shown in fig. 2). -
Tom Curtis at 01:04 AM on 10 May 2012Prudent Risk
Composer99 @30, and MuonCounter @28, if you leave "bad" out of the statement as Paul Magnus suggests, it reads:"If we continue in a business-as-usual scenario, the results [will be] catastrophic."
That does not represent an optimistic point of view. Indeed, it is too pessimistic. A climate sensitivity of 2, for example, would be bad with BAU, but it is far from clear that it would be catastrophic, and has not been ruled out by the science as yet. Rather than being too optimistic, Magnus is too pessimistic. Unfortunately, catastrophic is more probable than merely bad with BAU. But in the event that the world's governments continue to fail future generations, there remains some hope that the worst possible consequences will be avoided. -
Composer99 at 00:56 AM on 10 May 2012Prudent Risk
Paul Magnus: The trees & wildlife killed off in the Amazon droughts of 2005 & 2010 (both of which were considered very unlikely events), the farmers & ranchers affected by the floods in Pakistan and the drought in Texas, and the Russians affected by the extraordinary heat wave in Moscow would beg to differ with your claim:The probability of bad at current emissions levels is so low that may be it should be left out of this statement.
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Tristan at 00:47 AM on 10 May 2012Prudent Risk
I think Muon's jaded eyes are seeing an enemy where there is a friend. ;) I read Paul's comment as 'there is no way it will be only "bad", if things continue unabated'. -
muoncounter at 00:41 AM on 10 May 2012Prudent Risk
Paul Magnus#27, Do you have any information to substantiate this claim? Perhaps something from a peer-reviewed science journal? Given that some 'results' are already starting to happen, your optimism is curious. -
Paul Magnus at 00:19 AM on 10 May 2012Prudent Risk
"If we continue in a business-as-usual scenario, the results range from bad to catastrophic." The probability of bad at current emissions levels is so low that may be it should be left out of this statement. -
SteveS at 00:08 AM on 10 May 2012101 responses to Ian Plimer's climate questions
Wow. I had never looked at any of these questions before, but these seem revealing to me. Many of the questions (e.g. 14) display, in my mind, either a stunning level of ignorance or a deliberate attempt to mislead. Some interesting information in there that I wasn't aware of. I was especially interested in the graph in the response to question 78 showing the rapid rise in sea level in the last century. I'd never seen that one before. -
chriskoz at 23:52 PM on 9 May 2012101 responses to Ian Plimer's climate questions
Looking through thte linked PDF, out of 101 questions I counted 20 classified as incorrect/misleading and 2 as irrelevant. So, some acknowledgement to Plimer is in order: at least he keeps his dicourse sensibly to the topic in 98%. This is opposed to some other contrarians (e.g. Monckton) who operate by trolling & gish-gallopping with the only visible aim of confusing the listener rather than conveying any coherent information, even if false one. I would like to check Plimer's "expected answers" to this questionaire. Does anyone know if Plimer did publish his answers? It would be interesting to compare them, just to see the talking points of his followers in the interest of easier debunking if needed. -
alexharv074 at 22:32 PM on 9 May 2012Lindzen's Clouded Vision, Part 1: Science
(-Snip-)Moderator Response:[DB] Your continued tone-trolling makes clear you cede the field on the topic of the OP of this thread: Lindzen's Clouded Vision, Part 1: Science.
For the record, if you are unable to mount a presence here that focuses on the actual science & is presented in compliance with this site's Comments Policy (which poses no undue burden to the vast majority of commentators here), then you are welcome to take your interactions in climate science blogs to other venues.
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Utahn at 22:31 PM on 9 May 2012Lindzen's Clouded Vision, Part 1: Science
So, back to addressing the arguments, Alex, was Lindzen wrong to say we shouldve seen 3C by now? -
Daniel Bailey at 22:30 PM on 9 May 2012We're coming out of the Little Ice Age
A little visual adds perspective for the claim that the CET record runs counter to the global temperature record, and for that claim about the Maunder recovery with the imputation that that rise was similar to that of today:
[Source]
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Utahn at 22:28 PM on 9 May 2012Lindzen's Clouded Vision, Part 1: Science
"We should have seen 3C.". I will be pleasantly surprised when Alex states "this is wrong." -
MA Rodger at 22:22 PM on 9 May 2012Lindzen's Clouded Vision, Part 2: Risk
The annual CO2 rise was 2.9ppm. Increases up to 3.0ppm lasting for one or two months are not so unusual. A graph showing such rises in MLO data two clicks down here. However, what makes it a little more alarming is that ENSO has only just turned positive & it is ENSO that precedes these increased rates of CO2 rise. To add to that, RSS gives April a 0.333 deg C global temperature, again nudging up high before ENSO has even started. On a different note (& more 'on-topic'), the idea that Lindzen has ever given any thought to the impact that global surface temperatures is entirely farcical. It is realising his blasé attitude to rising temperature that has made me see what a buffoon Lindzen really is (or more correctly has always been. His comment I relate below is nothing new.) In his recent talk in London he compared the 0.7 deg C rise in global temperature over the last century to the temperature changes experienced in Boston. This is bar room gobby-git talk, but perhaps simply Lindzen doing propaganda. What convinced me he genuinely believes this tosh was his comment at the conclusion of this bit of his talk. “Say, at least so far, I mean if some day I see there are changes 20 times what I’ve seen so far, that would be certainly remarkable. But nothing so far looks that way.” That's 20x 0.7 deg C or +14.0 deg C. Anybody who dismisses the prospect of such a rise in global temperatures in such a manner cannot be considered any sort of climatologist. -
Daniel Bailey at 22:16 PM on 9 May 2012We're coming out of the Little Ice Age
Robin, the Central England Temperature record is not the world. Using it as an argument against global temperatures is a serious fallacy and is generally considered an attempt to misinform. Was that your intent? Edit: Also, my recollection was that the proper repository of CET data was the Met Office, here: http://www.metoffice.gov.uk/hadobs/hadcet/
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