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CBDunkerson at 21:41 PM on 6 August 2010Remember, we’re only human
mothincarnate, plenty of people reject evolution even today... that has not prevented it from transforming the biological sciences and resulting in many advancements which benefit even those who disbelieve the science. I think it will be the same with advances going forward. Just as some religious groups reject modern medicine now others in the future will reject gene therapy, performance improving implants, cloned organs, and many other things... and just like the groups that reject modern medicine this will lead inevitably to those groups becoming marginalized minorities. When a new advancement gives the ability to save their life or their child's life most people are going to take it. GM foods are stigmatized without much justification now... but not so much in places where they are the only way of stopping starvation. If food availability becomes scarce people WILL change their tune on GM foods VERY quickly. Religions get re-written on a regular basis... the survival instinct does not. -
dorlomin at 21:32 PM on 6 August 2010Grappling With Change: London and the River Thames
I am just thinking and I realised that sea level rise may hit esturine cities much harder than either sea level or up river cities. Basically when a river gets to the sea is slows down and spreads out, this is the estuary. However as sea level rises the estuary will move back but it will have no where to spread out as it starts getting to the city parts that have been built on, so the total volume of water in those segments of the river will increase much quicker than sea level. It will be effectively squeezing the wide estury into a narrow river channel, probibly with build up river walls to try prevent flooding. Looks like some major engineering to keep the water flowing past the cities built up limits..... -
chris at 21:23 PM on 6 August 2010Confidence in climate forecasts
omnologos at 10:52 AM on 6 August, 2010 Yes you have a point Omnologous, although I think we might recognise that much of what you say is implicit in the sort of arguments used here. So when the term "prediction" is made, we should recognise that we really mean projection, and that this projection is being made to test a particular scenario (e.g. emission scenario). Likewise it's implicit that we recognise the inherent uncertainty about the future and that stochastic and contingent events are unpredictable (even if we can model some of these pseudo-stochastically - e.g. we can parameterize ocean current changes that give ENSO-like behaviour). I don't think anyone thinks they're "crystal balls" (I agree there is lots of confusion about this), and I personally don't think they tell us very much about future global warming over and above what we know from the seperate assessment of the forcings and their projected increases and so on that are themselves used to parameterize the models. The value of models (of the sophisticated computational variety) is that they allow us to assemble and incorporate our understanding into a representation of natural phenomena, which allows testing of future projections. They may also give insight into smaller scale phenomena (e.g. regional variability of distribution of thermal energy in a warming world), and provide reasons for more focussed investigation of experimental/empirical observations (e.g. to address apparent differences in tropical tropospheric temperatures between models and real world observations). So extraordinarily useful tools.....but not crystal balls! -
Argus at 21:21 PM on 6 August 2010Confidence in climate forecasts
For whom was this propaganda post written? For the average 10-year old? It is full of oversimplifications and half-truths. I agree with Einstein, as quoted by omnologos in an excellent comment (#45). An example: "Perhaps you have seen, or even had a ride, on one of those model stream-trains. These are miniature working replicas of real steam-engines. Climate models are the same; they are a working replica of the earth, only instead being made of rock and water and other materials, they are made from mathematical equations." There is no likeness other than the name 'model'. A model of a locomotive is a small-scale replica of a physical object already existing and well-known in every minute detail. You know exactly what the original object is like, and you can make the replica as precise as you like. On the other hand, a climate modelling program is a total artefact, a computer program fed with parameters and variables that are a mixture of basic physical laws, empirical data, and guesswork. You can not take a ride on it. All you can do is look at the diagrams it produces, and see if they agree with what you expected. If not, you change something and make a second run, etc. Change one parameter (for instance something to do with cloud production), and (hep!) you have a 'model' where the earth's average temperature is going to fall 2 to 3 degrees over the next 50 to 100 years. As proven by angusmac (#20), these climate 'forecasts' over-predict global temperatures when compared with observed temperatures. I am guessing there is a purpose behind this. -
Rob Painting at 20:01 PM on 6 August 2010Confidence in climate forecasts
Omnologous @45 - I can predict that summer will be generally much warmer than winter. Or is that unknowable?. -
jenikhollan at 19:57 PM on 6 August 2010Three new studies illustrate significant risks and complications with geoengineering climate
The proper Fig 3 is this one. -
Berényi Péter at 19:55 PM on 6 August 2010Remember, we’re only human
#38 John Russell at 18:09 PM on 6 August, 2010 See where the UK comes on this list. If I were you I would not use the list of the Optimum Population Trust. It is absolutely bogus. It says "All source data from The Ecological Footprint Atlas 2009 (Global Footprint Network), based on 2006 figures". They also say actual population of EUROPE (EU) is 731.28 million. Now, in fact actual population of EU was 493,226,936 in 2006. -
Rob Painting at 19:54 PM on 6 August 2010Confidence in climate forecasts
Chriscanaris @ 36 - "With respect, you missed the point. I have no overwhelming desire to get on the plane. I'd just like to make sure the models are right." Yes, what I wrote earlier wasn't quite on point. The analogy itself isn't a valid fit, but a better extension would be: We're already on the plane, we didn't know there was a problem when we took off, but we do now - the models predict a crash if we continue much longer. Bits and pieces seem to be falling off the plane, which suggest the models might be on to something. I think we should try to land before we crash, we can't afford to wait for the models to be perfect. But you seem to be saying, "hang on a minute, about these models, only 90%?.......". -
tobyjoyce at 18:46 PM on 6 August 2010Remember, we’re only human
"Malthus was wrong. He believed the Isles of Britain could not support more than 7 million people." Malthus may have had an adjacent country in mind when he was writing: Ireland, where the population was exploding in his time, millions of those dependent on a single crop: potatoes. Ireland was place with many poor, and early, fecund marriages. Malthus' critics argued that birth rates would adjust to circumstances, but many thought the Irish Famine of 1845-1852 was his vindication. All in all, 1 million Irish died of starvation and disease, a further million fled overseas. Yet, the aftermath to an extent vindicated Malthus' critics - Ireland became a country of late marriages with small numbers of children. Sexual repression and clerical control became notorious. The birthrate only began to rise again, and emigration reverse, in the 1960s. Today, demographic historians see these trends beginning BEFORE the famine, but they were too late to mitigate the catastrophe of the potato blight, which no one foresaw. So Malthus was possibly only half right - the Irish were cognisant of there situation and the population was adjusting - families were getting smaller, marriages later, the safety valve of emigration was coming into use. But with the onset of blight these adjustments were insufficient in the short time abvailable & a terrible tragedy ensued. As an Irishman, I would be loath to write off old Malthus as totally "wrong". Contingencies can happen that drive an already precarious situation past a tipping point. It is tempting to see 21st century civilization dependent on a limited supply of carbon-based fuels as similar to the 19th century Irish poor, dependent on a single food crop. Is that too simplistic? -
RSVP at 18:11 PM on 6 August 2010Three new studies illustrate significant risks and complications with geoengineering climate
Ann #18 Well put. -
John Russell at 18:09 PM on 6 August 2010Remember, we’re only human
HumanityRules at 09:50 AM on 6 August, 2010: I can't agree with the bald statement that 'Malthus was wrong'. Malthus was right in principle, but couldn't take everything into account. Most notably he didn't foresee the massive increase in carrying capacity cheap fossil energy would provide. That's a perfect example of why scientists should avoid making predictions. They can be essentially correct but if they gamble on occasional 'best guesses' in order to create their equations it will often be those weak links that let them down. You say, "Malthus was wrong. He believed the Isles of Britain could not support more than 7 million people." That's a bit like seeing a field full of cows and saying, "see how many cows that field can support". There's current population and there's sustainable population. The difference is quite dramatic. See where the UK comes on this list . -
Berényi Péter at 18:04 PM on 6 August 2010Grappling With Change: London and the River Thames
#39 doug_bostrom at 16:05 PM on 6 August, 2010 Allowing economists to decide whether or not particular sets of physical facts should be addressed or acknowledged is arguably quite bizarre, actually seems like something lifted from anachronisms like Soviet Russia. There used to be a joke about a mythic soviet paper clip factory that was required to produce 100 tons of paper clip in a month. They have solved the problem by producing just ten pieces, 10 tons each. -
RSVP at 17:58 PM on 6 August 2010Waste heat vs greenhouse warming
KR #184 (...et. all) "You end up with more radiation from the top of the atmosphere, less from the surface, but a total of less energy radiated overall." It is not clear to me why the atmosphere's vertical temperature profile should affect the overall energy discharge. In my mind, there is on the one hand a) an energy discharge associated with surface-to-space flux, and on the other hand b) (generally independent of this statistically) flux associated with GHGs-to-space. If the profile of temperature changes slightly raising temperatures in the lower atmosphere (i.e., the green house effect), how does this affect net upward flux of a or b? Unless there is a particular reason, to me it seems, the overall net energy released is the same. There is no accumulation of energy. If however, you add heat (i.e., waste heat), now you have something very tangibly added to the system. (i.e., energy cannot be created or destroyed etc.). And it is being added day in, day out... even at night. I think KRs sentence is inaccurately expressed, and it is not a big deal, we all make mistakes. In fact, it has been helpful to point out... 1) GHG DO increase temperatures in the lower atmosphere. 2) GHG DO NOT imply overall energy accumulation from the Sun, but yes, a change in energy storage distribution. 3) Waste heat DOES imply an increase in the net energy being stored and therefore is a big environmental problem. The outward flux never changes, so waste energy can only accumulate. 4) Perhaps the only solution is increasing the Earths albedo. PS This is only my humble opinion. -
tobyjoyce at 17:48 PM on 6 August 2010More evidence than you can shake a hockey stick at
Poast #2 is by country - data taken from Wikipedia. List of Weather Records Record Highs in the 1990s - Croatia, Estonia, Lithuania, Spain, Macedonia Record Highs in the 2000s - UK, Switzerland, Serbia, Slovakia, Portugal, Moldova, Italy, Iceland, France -
tobyjoyce at 17:42 PM on 6 August 2010More evidence than you can shake a hockey stick at
I did a little exercise with European highs and lows - up to 1990, there was a median of 1.5 record highs and 3 record lows set per decade. Then in the 1990s, there were 5 record highs and 2 records lows. In the 2000s, there were 9 record highs and 1 record low. I think more record highs are being set this summer - while last January's cold snap produced no record lows as far as I am aware. -
David Horton at 16:58 PM on 6 August 2010More evidence than you can shake a hockey stick at
But but but but ... I can hear the chorus now, trying to separately attack each point. Your question about record highs is a good one. Surely this is a simple enough figure to be readily available from most European countries, Canada, at least some South American countries, China and Japan? It is an important piece of analysis because it gets away from the denier cry that "High temps are just weather, we've always had them". Yes indeed, but the point of records is that you haven't had them. -
Cornelius Breadbasket at 16:25 PM on 6 August 2010Why I care about climate change
the leader of the opposition, who is a few marginal seats away from becoming leader of our country in a few weeks, states that "climate change is absolute crap" I am speechless. But then we have Nigel Lawson, UKIP and Monckton, over half of the Conservative party... I often think what a backlash would look like. Will it be driven by extreme weather events? The recent flooding in Pakistan is an interesting example. OK - I keep hearing that you can't attribute a single event to climate change, but I wonder if that is a little like saying you can't attribute a single cancer cell to smoking. Globally this year (so far) there has been unprecedented flooding in Southern France, Poland, Brazil, China, Tennessee and Arkansas. Here in the UK flood risks have increased so significantly that insurers are saying that some parts of the country will become uninsurable. (http://www.guardian.co.uk/business/2010/jul/28/house-insurance-premiums-flooding). The backlash against smoking happened slowly - but has ended in bans and lawsuits for compensation. Will it be the same with climate change? -
Doug Bostrom at 16:05 PM on 6 August 2010Grappling With Change: London and the River Thames
GC we might nonetheless be able to entertain a fine argument on freedoms as they pertain to physical things, come to think of it, but this is probably not the place. However I think I can provide an example that is related to my article in the sense of abstractions invading physical reality. I have a problem w/the North American Free Trade Act for because it has features that force signatories to ignore certain physical things and live in the world of economic abstractions which are prone to arbitrary synthetic alterations. NAFTA allows corporations to autonomously reach past national governments and attack environmental protections, watering down local environmental regulations that may produce effects deemed "protectionist" by economists not concerned with actual physical realities. Not only is this undemocratic in a pretty fundamental way but it's also strikingly divorced from factual realities. Allowing economists to decide whether or not particular sets of physical facts should be addressed or acknowledged is arguably quite bizarre, actually seems like something lifted from anachronisms like Soviet Russia. "We don't care if you only have 20 lathes, you must produce as though you have 40," that sort of thing. -
Doug Bostrom at 15:15 PM on 6 August 2010Grappling With Change: London and the River Thames
GC ignoring for a moment that I don't really buy into the Heritage Foundation and Wall Street Journal editorial pages I don't think we'll find agreement between ourselves on that particular issue. For one thing it's solidly in the realm of economics and political science which together have never come up with a generally reliable answer to their equivalents of "what's 2+2?" At least with climate science we can agree on the boiling and freezing point of water, etc. This country (the one I'm in) is facing a really serious challenge right now concerning how our system is being exposed as running on good faith, vulnerable to things such as exponentially increasing invocation of the filibuster rules. Under the present day behavior we'd have never gone to the Moon, never ended segregation, never joined in beating back Hitler, on and on. Regardless of where folks fall on particular issues, they should realize there's no way forward by filibuster. Getting back to good faith is bigger than any particular piece of legislation, more important. Seriously. -
scaddenp at 14:27 PM on 6 August 2010Grappling With Change: London and the River Thames
Strange perspective. I'm from NZ in that list. We have ETS (though I would judge it as pretty useless) so, nope that doesnt restrict freedom. Both left and right are anti-subsidy so no fossil subsidies in sight. Now would ditching your subsidies be a great start in your road to "freedom" (whatever that is)? I would have thought the greatest problem the US government had would be lack of any commitment by either side (but especially post-war Republicans) to balance a budget. -
Darv at 14:02 PM on 6 August 2010Communicating climate science in plain English
Re Doug's various posts. I routinely get into discussions with very open minded folk who have NO conection to the science, or even any awareness that blogs like this exist. The proposed app would not only allow me to mount coherent & referenced arguments in pubs, but would also let me spread the general awareness of the availability of the information. -
gallopingcamel at 13:36 PM on 6 August 2010Grappling With Change: London and the River Thames
doug_bostrom (#35), You introduced a new topic when you started criticising the US government for entirely the wrong reasons. From my perspective the greatest problem with the US government is its assault on freedom in general and economic freedom in particular. Only seven economies out of ~180 worldwide are ranked as "FREE" by the Wall Street Journal and the Heritage Foundation in 2010. Sadly the USA is now ranked "MOSTLY FREE". Which countries achieved the top ranking? See The list below: 1. Hong Kong 2. Singapore 3. Australia 4. New Zealand 5. Ireland 6. Switzerland 7. Canada -
muoncounter at 13:33 PM on 6 August 2010On the Question of Diminishing Arctic Ice Extent
In images now available from Canadian and Danish sources, the beginnings of an ice free Northwest Passage can be seen. 7/22/2010 Denmark DMI/COI
8/3/2010
Canada 7/22/2010
Book your passage now!
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Doug Bostrom at 12:02 PM on 6 August 2010Confidence in climate forecasts
I am appalled at the level of scientific misunderstanding... Uh-huh, or the less-than-ideal use of a word which does after all include "judge to be probable" among its meanings yet can't be used in this context because somebody will inevitably pipe up about weather forecasts. Rhetoric is important. So good point, it's a favorite talking-point of contrarians but not really indicative of any problem w/scientific understanding. -
scaddenp at 11:22 AM on 6 August 2010It's cooling
TomJones - the thermohaline circulation perhaps? If you watch the ENSO forecasts you will see cross-sections of the tropical ocean showing the downwelling. It doesnt escape detection. -
johnd at 10:58 AM on 6 August 20101934 - hottest year on record
doug_bostrom at 08:39 AM, I agree that it is the frequency of excursions, rather than the magnitude of individual excursions that are more relevant. For that reason I feel the Quinn reconstruction of El-Nino events is important to put more recent excursions into perspective.
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omnologos at 10:52 AM on 6 August 2010Confidence in climate forecasts
I am appalled at the level of scientific misunderstanding shown here by Kevin Judd (and, presumably, John Cook). There is no such a thing as a "climate forecast". What climate models do is run “scenarios”, “what-ifs”, computations in which some parameters get changed, and everything else remains equal. That is a normal way of conducting risk analysis, but only if everybody keeps in mind that OF COURSE in the real world everything changes, and nothing remains equal. The surface temperature, for example, is also affected by unknown variables such as future volcanic eruptions and solar activity. Hence, the actual temperature difference between 2010 and, say, 2050, is pretty much unknowable. Climate models are therefore tools to probe risks and sensitivities, not crystal balls. As a matter of fact, they can’t, won’t and never will tell us anything precise about future weather, weeks, months, years or centuries in the future: just as no donkey will ever win the Kentucky Derby. That doesn’t mean climate models (or donkeys) are useless: rather, they should be used for what they are worth using. And yes, you can ask Gavin Schmidt if you don't believe me ;-) ps some will say that the difference between "forecast" and "scenario" is lost among the general public. Well, as Einstein would have it, scientific communication should be made as simple as possible, but no simpler. And why is this so important? Schmidt again: "there is a real danger for society’s expectations to get completely out of line with what eventually will prove possible, and it’s important that policies don’t get put in place that are not robust to the real uncertainty in such predictions". -
mothincarnate at 10:29 AM on 6 August 2010Remember, we’re only human
Humanity Rules #34 "Contained in this article is the sense that we're on a doomed trajectory ATM. That underlying assumption is wrong." No, contained in this article is the argument that our practices are unsustainable and our impact is exacerbating the problem. "...the sort of thing that this article is against, such as industrialised, modern farming techniques, is the method that most effiently cycles nutrients through the system and generates great yields." The article is not against industrial improvement at all - in fact I make many points that we have achieved amazing things. We need to remain mindful, however, of the ecological services on which we rely. "The problem of limited resourses today is not a natural one but socially imposed." Baseless... Look at peak oil (within the next decade) for an excellent example, however, you should also look into whatever local natural resource management processes you have - almost all will have some form of depletion, largely the using up of resources quicker than they can be regenerated. In other cases, it's that we're changing the process (such as watercourse and landscape use changes) thereby diverting typical ecological pathways. Also, I make no point about population size here. It not a question of the amount of people, but how we manage, how we exploit and how we live. We could, I believe, have 9 billion people and be sustainable - but we cannot live as we currently are. Space,sprawl alone demonstrates this. -
adelady at 10:23 AM on 6 August 2010Remember, we’re only human
HR But recycling all locally available nutrients is *exactly* what subsistence farmers need to do. The people who currently have the least resources are the ones who most benefit from getting the most out of what they do have. Those of us in wealthier cities would do well to have a good hard look at approaching peak oil. If the price goes the way it looks that it might, then being a bit more frugal with what goes into landfill may be obligatory if the price of oil-based fertilisers rises as far as it could. Anyone who thinks that consuming less means choosing to have fewer handbags or gadgets should bear in mind it's more likely to mean spending so much on food and transport that those luxuries are unaffordable. There won't be a choice. Either way, sensible use of what we have, whoever we are, makes a better life for ourselves and our neighbours. -
Doug Bostrom at 10:05 AM on 6 August 2010Remember, we’re only human
"1 or 2 dollars a day" means we could increase their income with direct support by an order of magnitude without lifting a finger. We don't choose to do that. We can debate why that may be but it's not a case for some sort of hard physical limit we're up against w/regard to lifting the poor out of poverty. -
muoncounter at 10:03 AM on 6 August 2010Communicating climate science in plain English
Have you seen the format used by ESPERE? Hard to beat the simplicity of 'Basics' and 'Read more'. -
Doug Bostrom at 10:01 AM on 6 August 2010Three new studies illustrate significant risks and complications with geoengineering climate
Thingadonta, what's interesting (to me) about thermal processes of the sort you refer to is their neat fit with sometimes fickle sunshine. It would not really matter exactly when C02 was extracted from the air, just that the average amount over time fit the requirements. If a solar thermal extractor were idle for a week because of inclement weather nobody would be inconvenienced. -
thingadonta at 09:52 AM on 6 August 2010Three new studies illustrate significant risks and complications with geoengineering climate
Why can't C02 be removed from the atmosphere in a manner something like the Haber process? The Haber process removes nitrogen from the air for use as fertiliser. It wasn't an easy process to perfect, and won Haber the noble prize. If huge amounts of energy are required, well, there is- for example in Australia's outback-we have some of the largest uranium deposits in the world, one of the most politically and geologically stable areas, and hardly anyone lives there. Nuclear reactors could be used to drive the removal of c02 from the air. Possible? -
HumanityRules at 09:50 AM on 6 August 2010Remember, we’re only human
16 Ned Contained in this article is the sense that we're on a doomed trajectory ATM. That underlying assumption is wrong. 17.adelady at 01:14 AM on 6 August, 2010 "I'm not against doing that in a more enlightened way but we need to be clear that we still have to consume more." I don't understand this. If you need clarification on this I suggest you go speak to a few people living on 1 or 2 dollars a day. The problem I see with the rest of your argument is that the sort of thing that this article is against, such as industrialised, modern farming techniques, is the method that most effiently cycles nutrients through the system and generates great yields. While organic farming may fed the paranoid middle classes, industrialised farming will feed the 6 billion other souls on this planet. 19.John Russell Yep very funny, but I guess you understand that Malthus believed in absolute natural limits. I'm more arrogant in the belief that our huge brains will never allow that to happen. The problem of limited resourses today is not a natural one but socially imposed. 22.Chris G Yep Malthus was wrong. He believed the Isles of Britain could not support more than 7 million people. He was wrong. -
mothincarnate at 09:45 AM on 6 August 2010Remember, we’re only human
CBDunkerson "Advances in biotechnology and brain-computer interfaces both have the potential to transform not only our underlying technological infrastructure, but the human race itself. Rather than an upcoming plateau I see entirely new paths to technological advancement opening up." This will require a lot of energy and even more unlikely (as BP, the 1st comment here illustrates) a massive overhaul of how we see ourselves and our moral and ethical systems. Currently most people are still horrified by GM food (I wrote a piece about this a while ago and got into an interesting debate that was as far as I could see a scientific verses ideological debate). Many people are appalled by being (rightfully) titled an animal species. We still have so much dogma and arrogance to overcome before we can be so objective with our investigations to achieve what you point out here. So much so that I suspect we will not reach such a point (Clark often wrote about such a future, and when we look at the scientific breakthroughs, we could be forgiven for jumping on board with his outlook - whoever in retrospect we can see that the sociological constraints make such improvements sluggish unless they prove to be immediately imperative or massively profitable). -
Doug Bostrom at 09:39 AM on 6 August 2010Remember, we’re only human
Muoncounter, I'm thinking in a slightly different way, I think. The relative number of latter-day Einstein analogues is not keeping up with the count of scientists who resemble Einstein in many other ways, have the capacity to have been Einstein. In fact, I'm quite sure there are plenty of people alive today who would have been Einstein (Freddie Fudpucker's Theory of Relativity?) if Einstein had not already grabbed the brass ring that was available only once at a particular level. The ring gets higher each time somebody lays a hand on it, faster than we produce people capable of reaching it. -
muoncounter at 09:24 AM on 6 August 2010Remember, we’re only human
#25: "This apparently nonlinear relationship between important, world-changing insight versus population is intriguing. People today are not more stupid. The fruit we're reaching for is becoming ever higher on the tree" I once heard it this way: If you and I are at a conference and Bill Gates sits down next to us, the average income at our table goes up enormously. But you and I make the same as when we walked in. Same analogy for an Einstein sitting with us. One problem with our species is a form of 'perceptual inertia': We have a hard time perceiving and reacting to things that are slowly changing, even when they are right in front of our eyes. Animals that sense their habitat is under stress will move to more hospitable sites. We just crank up the AC another notch. -
Doug Bostrom at 08:39 AM on 6 August 20101934 - hottest year on record
Meehl has quickly responded and sent me a copy of his paper, published last December. Whoops, I stand corrected! I could only find a preprint draft which actually did include the item you quoted, seemed better not to rely on that. As to your last question, if this year is any indication (Moscow, Las Vegas, etc.) Meehl's coauthor seems to be remarking on something visible outside of their work. I can't speak for him but what I'd expect to see is that an overall change in temperature is not going to immediately emerge as a smoothly monotonic increase in global record highs thereby breaking average records year after year but in increasing frequency of excursions in various specific locales. As those point records aggregate and bulk up in relation to broader statistics I'd expect to see much slower movement in the yearly averages, often masked by variability. Taking for instance the case of Moscow we're seeing many contiguous days of temperatures some 25 degrees fahrenheit over norms, but these numbers being folded into a much larger collection of data then will of course in a single year only produce changes at a level of precision we don't look at. Given long enough these changes will work their way up through decimal places and emerge. That's exactly what we see in the global record, variability gradually moving upward. This is something that's amenable to experimentation with a spreadsheet. Folks like Meehl will consider it all old hat but that does not mean you could not have fun with it all. -
John Russell at 08:39 AM on 6 August 2010Three new studies illustrate significant risks and complications with geoengineering climate
All of these potential 'solutions' seem to require copious amounts of energy to implement -- something that will become more and more in short supply for the foreseeable future. Humans really need to learn to enjoy life without consuming energy. Until we've cracked fusion (or something similar) anything else is disastrous. -
kdkd at 08:33 AM on 6 August 2010Remember, we’re only human
The Ville #28 In this case thingadonta is correct. Almost every species that has existed during the history of life has gone extinct, and the only known trajectory for a top-of-the-food-chain predator like us is to extinction. Personally I feel that with the human intellect, it may be possible to prevent this to some extent, but with peak oil, population overshoot, and climate change being pretty pressing concerns the crunch time to deal with it is aproximately now. -
TomJones at 08:11 AM on 6 August 2010It's cooling
Chris, thanks for the references. Upwelling is an interesting mechanism. It would seem like it should leave footprints, though. The cold water would have to absorb sunlight near the surface and become relatively warmer before it was driven down, and that warmer water would have to escape detection. -
mothincarnate at 07:58 AM on 6 August 2010Remember, we’re only human
Arkadiusz Semczyszak I've done, and will do much much more posts, regarding ecological loss with climate change. You may have regional examples where local climate fluctuates a fair amount and the species handle the change well. As I state in the article, insect species at higher latitudes are likely to fair better than their lower latitude counterparts - they have more room. That said, the fossil record tells us that climate change relates to increased extinction rate, decreasing ocean pH increases extinction rate and we know that our modification of landscapes increases extinction rate. We know we the cause of all these impacts and we also know that we rely on numerous ecological services. Using ideal regional examples does nothing but send us further up the river without a paddle. -
Paul D at 07:47 AM on 6 August 2010Remember, we’re only human
thingadonta: "Part of the reason we live in cities is because nature is cruel, unfair, dirty, disease ridden, dangerous, unsafe, murderous, extinction ridden, forever competing, destroying, dispensing, exploiting, etc." extinction ridden?? How many extinctions are caused by non-human intervention? The only thing I can think of is volcanoes or something similar. thingadonta: We have learned to reject that within nature which we deem inconsistent with our human values, and there are plenty of them. Really. Just how many people do you speak for? Yourself? And your personal views about nature? What exactly do we reject? Or is this some religious view? eg. anti-gay or something? -
Cornelius Breadbasket at 07:46 AM on 6 August 2010Why I care about climate change
#97 kdkd Thanks for that. Re reading my post about the UK it sounds horribly arrogant (well I am a limey/pommy). Apologies. The political landscape you describe of Australia sounds remarkably similar to the UK - except you have the greens where we have the Liberal Democrats. I think I'll emigrate to Australia... We get a lot of news in the UK about extreme weather events in Australia (droughts, floods, wildfires, sandstorms). Are these acting as a driver for action on carbon reduction? You must have a strong denier community too - otherwise Monckton would never have visited. But there are so many excellent communicators in Australia - Tony Jones magnificent debunking of Martin Durkin (http://www.youtube.com/watch?v=goDsc9IaSQ8) Potholer54 (http://www.youtube.com/user/potholer54) and of course this wonderful site. Is there a trend away from denial in Australia?Response: "Is there a trend away from denial in Australia?"
It's difficult when the leader of the opposition, who is a few marginal seats away from becoming leader of our country in a few weeks, states that "climate change is absolute crap". A few months ago, he urged primary school students to be skeptical about the human influence on climate change because it was warmer ''at the time of Julius Caesar and Jesus of Nazareth''. -
Broadlands at 07:31 AM on 6 August 20101934 - hottest year on record
Meehl has quickly responded and sent me a copy of his paper, published last December. He wrote this: "We chose 1950 as the starting point because we needed a significant number of US stations with nearly continuous daily temperature measurements. Prior to 1950 the data quality falls off at many stations and there are a lot more missing daily temperatures thus making those stations not usable in our study." The new NCDC and old Weather Bureau records are, of course, monthly with the yearly averages being derived from each. Meehl's co-author said this about their work: "But as the average temperatures continue to rise this century, we will keep setting more record highs." Why shouldn't that apply to the yearly averages derived from monthly data since the northern hemisphere has been rising? -
Doug Bostrom at 06:51 AM on 6 August 20101934 - hottest year on record
Broadlands, again, you're not getting a very simple point here. At any temperature station record highs and lows will be distributed in a skewed way, with most appearing nearer to the -beginning- of the station history. You're also missing the notion that later records are more significant. The first record is automatic, the second a little less likely, etc. until once you're into decades of station history new records are both infrequent and represent more unusual excursions. Try setting up a thermometer in the shade at your house w/a tabula rasa record and record local record temperatures and the phenomenon will be easily visible. As to Meehl's selection of the date range, the article is still in press so you're not likely to get a response of any kind until his paper has been published. -
Turboblocke at 06:35 AM on 6 August 2010Three new studies illustrate significant risks and complications with geoengineering climate
CBW: I think you've hit the nail on the head there. Who will oversee the geo-engineering... if we can't get global agreement on reducing emissions, how are we going to get agreement on an organisation to change the weather? And if we do create an organisation to carry out geo-engineering how do we stop it getting sued? Where I see a huge problem is in deciding what geo-engineering to carry out, because it will inevitably involve models. Given that the deniers are so anti-models, how can they support geo-engineering? -
muoncounter at 06:07 AM on 6 August 2010Remember, we’re only human
#4: "we live in cities is because nature is cruel, unfair, dirty, disease ridden, dangerous, unsafe, murderous, extinction ridden, forever competing, destroying, dispensing, exploiting, etc." I've lived in cities that are described in exactly the same way. Not to mention foul air, traffic, noise and heat. -
Broadlands at 06:02 AM on 6 August 20101934 - hottest year on record
Doug... Thanks. I did write to them, back on June 9th. So far, no reply. Maybe you can do better? But, if you do write be careful to ask which of their two averages one should use. There are two for each year... one can be derived from summing the individual states and averaging them as I did for the comparable individual Weather Bureau states. This average differs from their own 48 state average. They argue that the former should not be used because "a simple arithmetic mean is not appropriate". ?? The latter are more appropriate having been state re-weighted... Montana is bigger than Delaware? But, either way, both are consistently lower than the original "raw" weighted Weather Bureau values. More "up-to-date" but very confusing. Three different monthly averages for the year, each lower than the other? I will try to learn from Meehl's (not Meehle) expertise but I'm a bit reluctant to simply accept the conclusions of a study that left out 50 years worth of record high monthly temperatures in 30 states... that's almost two-thirds of the contiguous US. Also, 80% of the record lows occurred before 1950... most in 1917. I've written to Dr. Meehl about why he chose to start his study in 1950. -
Doug Bostrom at 05:58 AM on 6 August 2010Remember, we’re only human
On the other hand I can be quoted as foolishly saying to my family that the television game "Jeopardy" won't be played by computers at a human level for another 30 years. Turns out IBM now has a machine that plays very competitively at the expert level. That's a pretty huge accomplishment even though it did not depend on any particular leap of insight, rather was a meticulous integration task. Hmmm.
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