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apiratelooksat50 at 05:45 AM on 9 February 2011How We Know Recent Global Warming Is Not Natural
I'm willing to consider CO2 (both manmade and natural) as significant "contributors" to global warming - but not "drivers". Since, we've been more or less steadily warming since the Little Ice Age, it appears that humans have been doing quite well.
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mozart at 05:39 AM on 9 February 2011Global Warming and Cold Winters
Just to motivate this a bit, let's look at Chicago as a good example of a city impacted by Arctic weather systems. The data base registers record lows and highs going back to 1950. So if we choose the decade starting with 2001 running through end 2010, we would expect five highs and five lows. See:http://www.weather.com/outlook/recreation/outdoors/wxclimatology/daily/USIL06 In fact what we get is: two all time highs in January and no lows, one high in February and no lows, and no highs in March and two lows. These results are far below the expected five lows/highs for each month....showing the general mildness of the weather. And reasonably balanced with three highs and two lows. Furthermore, the Chicago results would likely be duplicated throughout the Mid West, the region most impacted by Arctic air. There is no empirical evidence for the theory, in the region which is most likely to demonstrate it. -
muoncounter at 05:26 AM on 9 February 2011CO2 is not increasing
#20: "it's an odd explosive growth model that has it's highest observation 13 years ago in 1998" Odd indeed. So odd that one can only conclude that the observation you made must be incorrect. If you cared to look upthread, you would see that models are very close to observed (those are the dots on the emissions graph). If we stay at or near A1FI, we reach 560ppm (a doubling of pre-industrial CO2) mid century. That's what the science says; what you choose to believe is your own. I refer you once again to the noted futurist, H. Callahan, as quoted at the bottom of this comment. -
muoncounter at 04:40 AM on 9 February 2011Articgate: perpetuating the myth that Arctic sea ice has recovered
#30: Thanks, I reset the link to yours. My guess is that this year is a statistical tie with 2006-07. Still massively below the average - and that's the point. -
Albatross at 04:28 AM on 9 February 2011Global Warming and Cold Winters
Mozart @146, So you do not deny it. Actually, it is your tone and persistent attempts to obfuscate and derail this thread that are offensive. Sorry, but you have been called on your game. I doubt very much that you have even consulted the peer-review paper by Petoukhov and Semenov (2010) which speaks to the possibility that the loss of Arctic sea ice can modulate the mode of the AO. Actually many of the 146 comments to date have been on topic....at least make the for to read the entire thread before making such a ridiculous and false assertion. The research and pursuit of science will continue, and maybe the researcher's hypothesis is wrong, but at least they are making a concrete effort to improve our understanding of the climate system. You dismissing it as a "silly" idea is both juvenile and ridiculous. I challenge you to refute their findings with your own research published in a legitimate journal. Now unless you decide to actually speak to the science, show a sincere effort to engage in good faith, and back up your assertions with appropriate data, you can expect me to ignore you. -
Tor B at 04:15 AM on 9 February 2011Monckton Myth #9: Monckton vs Monckton on heat waves
re: Figure 1: Ratio of record daily highs to record daily lows I look forward to seeing the Oct-Dec 2009 data included in the graph so that it shows 6 complete decades. I can just hear someone saying the data is "cherry-picked"! (I know the graph was first published in November 2009, but it does need updating.) In an attempt to fill the gap, I found: 1) “October [2009] was a very cold month across large parts of the country.” - Newswire.com and 2) “The near-record global temperatures of 2009 occurred despite an unseasonably cool December in much of North America.” - ScienceDaily 3) I didn't find anything about November 2009, one way or the other, but I did stop searching. This basically anecdotal information will definitely not decrease the height of the 2000s ‘record highs’ bar, but suggests the height of the ‘record lows’ bar will increase. How much will the 2.04:1 ratio change? “Very cold” October suggests lots of records may have been set; “unseasonable cool December” suggests no more than a few records set. Can somebody crunch some actual data? -
hank at 04:14 AM on 9 February 2011It hasn't warmed since 1998
The 'further reading' links at the top of the first page are broken: "Tamino ... Garbage is Forever and Wiggles." If they've been recovered can you update the pointer? -
mozart at 04:09 AM on 9 February 2011Global Warming and Cold Winters
Troll? Hahaha....very polite Albie. Actually if you care to look you will find post number 143 was a response to another poster....as were many others where I was accused of being off topic. In fact this whole page doesn't contain one posting that is "on topic", except for my question on the Mexican lows and a few responses to that. My guess is, this silly idea has run it's course. It's a pretty embarrassing bit of speculation.Moderator Response: [muoncounter] Actually, your comments have wandered all over the map and you have ignored suggestions to redirect to other threads. Your opinions about 'silly ideas' are irrelevant. Please see the Comments Policy to develop some understanding of how this site works. -
Albatross at 03:50 AM on 9 February 2011Global Warming and Cold Winters
Michael @142, You are welcome. -
Papy at 03:49 AM on 9 February 2011Empirical evidence for positive feedback
Well, I couldn't find the appropriate thread, so here's an animation film I've just discovered from Leo Murray, about AGW and the 'tipping point': "Wake Up, Freak out - then Get a Grip" Is it accurate with climate science in general, and especially Hansen theory ? -
J Bowers at 03:49 AM on 9 February 2011Articgate: perpetuating the myth that Arctic sea ice has recovered
Comment left at Heartland in comments to their page where John links to in his post. Let's see if it survives:"...In fact, National Snow and Ice Data Center records show conclusively that in April 2009, Arctic sea ice extent had indeed returned to and surpassed 1989 levels..." Sir, you owe your readership an apology for giving a misleading impression that Arctic sea ice is recovering, based on of data comparisons for a month in 1989 and 2009. The data inbetween, and since, clearly demonstrates that Arctic sea ice extent is consistently in a state of decline on climatological timescales (30 years, as defined by the World Meteorological Organisation. I trust that you will correct your error.
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Albatross at 03:49 AM on 9 February 2011Global Warming and Cold Winters
Mozart, "...why do we have 6 new record lows in Mexico?" and "Figured what out Albie..." You are not paying attention. My post @133 addressed exactly the question about the record lows in Mexico. And you are welcome by the way.....please put in some effort of your own. Mozart @143, again you are off topic. This thread is about "Global Warming and Cold Winters". If you do not wish people to dismiss you as a troll, please stop behaving like one. -
Riccardo at 03:33 AM on 9 February 2011A Flanner in the Works for Snow and Ice calculations
Ken Lambert if TSI and albedo are constant, in equilibrium the radiating temperature does not change, the energy emitted must be equal to the energy absorbed by the planet. -
mozart at 03:29 AM on 9 February 2011Global Warming and Cold Winters
Michael we have built a global economy with a world population of seven billion people. Maybe 500 million of those are self sufficient. The rest have no way of feeding or clothing themselves. They rely on an incredibly complex global network powered by oil. Try to change that in a hurry and the events in Australia will pale in comparison. And citing Australia is no better than citing the 2 foot of snow I see outside my window in Chicago. Storms have happened before and they will happen again. As for my numbers they come straight from the best carbon source Mauna Loa. -
michael sweet at 03:21 AM on 9 February 2011Global Warming and Cold Winters
Albatross: Thanks for the link, I missed it earlier in the year. Mozart, Good luck convincing people with your choice of data. Read carefully what you are writing. Are you really prepared to deal with weather like Australia has had to face this year all the time? Millions of people have been made climate refugees this year alone (for example 20 million in Pakistan), what will it take for your to be convinced that is a problem? It will not get better unless we decide to take action. -
pbjamm at 03:19 AM on 9 February 2011Monckton Myth #9: Monckton vs Monckton on heat waves
"...some very spectacular cold-weather records were also broken both in early 2010, when all 49 contiguous United States were covered in snow..." Some very odd snow that blanketed Los Angeles last January when the average temperature was 60F. http://www.weather.gov/climate/xmacis.php?wfo=lox -
Albatross at 02:58 AM on 9 February 2011Monckton Myth #9: Monckton vs Monckton on heat waves
Monckton claims: "neither the hot-weather nor the cold-weather extremes of 2010 have much to do with manmade “global warming”; like the heatwave of 2003 in Europe that is said to have killed 35,000 people, they are known to have been caused by an unusual pattern of what meteorologists call “blocking highs”". Yes, blocking highs occurring in a warmer world-- a spike on top of a long-term warming trend. Regardless, Stott et al. (2004) studied the 2003 European heat wave and concluded that: "The summer of 2003 was probably the hottest in Europe since at latest AD 1500, and unusually large numbers of heat-related deaths were reported in France, Germany and Italy." and "...we estimate it is very likely (confidence level >90%) that human influence has at least doubled the risk of a heatwave exceeding this threshold magnitude." Now who to believe? Easy, not Monckton's internally inconsistent and unsubstantiated musings. It is a little too soon to speak to the role of AGW in the Russian heat wave that killed an estimated 40-50 thousand , but early indications are that it too was exacerbated by AGW. -
arch stanton at 02:31 AM on 9 February 2011Monckton Myth #9: Monckton vs Monckton on heat waves
Aren’t there only 48 contiguous states? It is a fact that *some* snow was reported *somewhere* in each of the mainland states at that time. Monckton reports it as “…when all 49 contiguous United States were covered in snow…” If a blanket is only on my left big toe at night, I don’t consider myself “covered”. "a crisis of confidence in Monckton as a reliable source of information" ...Well put. -
curley hippy at 02:30 AM on 9 February 2011Newcomers, Start Here
Recently in the UK there was an episode of the brilliant bbc science series Horizon called Science under attack (I recommend trying to track it down and watch it). It concentrated mainly on the climate change argument and why it is under such scrutiny in the press and among people on the internet. It raised a good point that scientists need to do more to get there arguments across in the press and this website seems like an excellent tool for doing this. Are you doing anything to get this information out there? Are you the top link in google searches on these topics for example? I realise that it's easier said than done but I think promoting this website and it's content is very important -
Albatross at 02:28 AM on 9 February 2011Crichton's 'Aliens Cause Global Warming'
RSVP, "The issue is not about whether CO2 causes global warming, rather that science is used to establish authority, and therefore policy, and therefore power." Nonsense. This is fallacy and transparent strawman and it is getting incredibly tiresome. And it is about time 'skeptics' were called out on it. Chris Colose made this very apt and insightful post yesterday (originally posted here), and it calls the "skeptics" on their game-- "What is clear to me is that climate scientists are now being held to standards which are not typical of any scientific discipline, or for that matter, held to standards which skeptics do not want to put upon themselves. On the first point, it is now apparently perceived as “bad” when scientists come to a conclusion that is robust enough to be well accepted by the majority. I have never seen claims of the sort that “gravity people” are engaging in indoctrination, or the indoctrination of cell theory, the indoctrination of soil science, or the dogma of electrons. Strangely, this only applies to conclusions about climate change, or maybe evolution (and especially in America). In most fields, consensus is thought of as a consequence of a convergence of evidence over time in a particular subject-matter, and one goes to authorities (doctors for medical diagnosis, lawyers for legal advice, etc) for insight. Most people seek the explanation with the most support, which is then echoed by the experts in the field. Some, on the other hand, will leave 100 doctors that give them a certain diagnosis, and then approve of the one that tells them to meditate, take secret forest herbs, and pray five times a day to cure their illness. People go to calculus textbooks to learn calculus, and yet no one goes to an sociologist to learn by the segments of the heart and brain. However, in climate science, apparently ‘authority’ is a logical fallacy, and textbooks and classrooms can be replaced by random opinions on a blog. What’s even more startling, is that the personal communiation of scientists through e-mails can actually change the laws of physics! What all of this shows is that many people simply cannot think rationally about climate change, nor do they have the capacity to diagnose proper information from nonsense. And once they pursue nonsense, it is very difficult to convince them that they are wrong. You cannot convince such people that Pat Michaels, Singer, Marano, etc don’t actually have anything to say, or that WUWT is a disinformation source. It’s not that the information to show they are nonsense is unavailable, it’s that the information MUST be wrong. It is also clear to me that climate scientists must now become babysitters to every half-baked idea out there, otherwise they are being dogmatic. They must write detailed responses to people who think the greenhouse effect isn’t real. It is also clear to me that the so-called ‘skeptics’ are allowed to make up whatever they want at will without consequence, and create a large but ill-thought out laundry list, and that we must play this game or else we’re being ‘dogmatic.’ If a climate scientist make one mistake, or a date gets screwed up in the middle of a 1000 page document about glaciers, it will receive international attention. However, if ‘skeptics’ toss out 8 conspiracy theories, 10 logical fallacies, and 17 arguments with ZERO thought put into them, then it is a good thing that we get to hear all sides. Then, when one item on the bucket list is knocked down, they can just jump tot he next item. In the meantime, they are just as valid as everyone else’s idea, since the criteria for acceptance is 101% certaintly in everything." Bravo! -
Dikran Marsupial at 02:25 AM on 9 February 2011Crichton's 'Aliens Cause Global Warming'
RSVP@9 wrote "If an investigation or study is based on accepted "science", it cannot be adding anything new." No, most science proceeds in a rather incremental manner, based on accepted adeas and adding a novel extension, which often is rather small and so easily digested by the research community or based on a novel combination of accepted ideas that hadn't previously been considered. Science mostly proceeds via small steps by dilligent but unexciting work. The general public often don't get to hear about that sort of work as it doesn't have much appeal for the media, but that doesn't mean it doesn't happen or that it isn't the way the majority of science works. "And if it is adding something new, this new discovery has not yet become "accepted" science." See above, most of the time the extension is small and well supported by the paper and hence (if useful/relevant in the first place) is accepted almost immediately. The papers that take a long time to become accepted are those that (assuming they are correct) require a considerable change in current thought or are presented without adequate experimental or theoretical support. As they say, extrodianary claims require extrodinary evidence. "if it isnt based on accepted science, it likely to be bogus" Most claims that accepted science needs to be overturned *are* bogus. Every now and again you will get someone turning up to a physics department with proof that Einstein was wrong, or maths department with a short proof of Fermats last theorem, etc. But for every Einstein, there are a thousand Dunning-Kruger eccentrics. "even if the petrolium should never run out, the oxygen will" interesting suggestion, care to expand? -
Bernard J. at 02:23 AM on 9 February 2011Articgate: perpetuating the myth that Arctic sea ice has recovered
...and Mouncounter's (and my) graphic as it stands today is here. -
Bernard J. at 02:20 AM on 9 February 2011Articgate: perpetuating the myth that Arctic sea ice has recovered
For the record, I've just noticed that Stu N's graphic link will automatically update to the latest data, and eventually wander away from the current point. Today's graphic, as posted by Stu, is cemented here. -
dorlomin at 02:15 AM on 9 February 2011Climate Change Impacts on Ocean Ecosystems
why has the ph in the Atlantic changed so much quicker than other bodies? -
Bernard J. at 02:13 AM on 9 February 2011Articgate: perpetuating the myth that Arctic sea ice has recovered
Muoncounter at #19. Ironically, I posted the same graph at Deltoid yesterday. It's important though to be very clear about distinguishing between 2006 and 2007, with respect to the winter maxima, and Stu N made this point for me when I myself skipped over it. I was more concerned about the overall trend compared to 2007, and where it is heading, but if we're not careful it's quite possible that we could be accused of the sort of cherry-picking that Peter Gleick indulged in. That's one mud-hole I don't want to be wallowing in! -
Bibliovermis at 02:07 AM on 9 February 2011Crichton's 'Aliens Cause Global Warming'
New science becomes accepted science through the presentation of complete evidence, not whining about being the victim of the status quo. -
RSVP at 01:53 AM on 9 February 2011Crichton's 'Aliens Cause Global Warming'
Crichton's lecture was not in defense of science, but in pointing out opportunism. The issue is not about whether CO2 causes global warming, rather that science is used to establish authority, and therefore policy, and therefore power. This point aside, a very circular condition seems to emerge here. If an investigation or study is based on accepted "science", it cannot be adding anything new. And if it is adding something new, this new discovery has not yet become "accepted" science. (And in the worst of cases, if it isnt based on accepted science, it likely to be bogus.) On the otherhand, there are also things that do not require science to be known. For instance, even if the petrolium should never run out, the oxygen will. So at some point, regardless of global warming, alternative forms of energy will take over. -
mozart at 01:39 AM on 9 February 2011CO2 is not increasing
Ten years ago we would have said the curve was flat....and it's an odd explosive growth model that has it's highest observation 13 years ago in 1998.Moderator Response: [Daniel Bailey] Not at all flat; current levels are the highest in over 400,000 years (you must be looking at the South Pole station data curve):
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Global Warming and Cold Winters
mozart - I have replied to your last post in the thread here. Note that the "Recent Comments" link at the top of the page will take you to current conversations - most people monitor that, so moving to another thread doesn't mean that current readers will lose track of the conversation. However, new readers will actually be able to find relevant posts if you stay on topic. Please respect the Comments Policy and stay on topic, commenting on relevant threads. I'm actually quite surprised your last few comments have survived moderation, considering how you have failed to stay on appropriate topics despite requests. -
CO2 is not increasing
mozart - Reply here, as it's a much more appropriate thread. It's well worth reading the topic, also see the video in post #9, also graphs in #12, and in particular #17. Exponential growth has a nasty effect of slamming in hard down the line, much more people expect. Your CO2 emissions scenarios are grossly overoptimistic. -
Arkadiusz Semczyszak at 01:00 AM on 9 February 2011Climate Change Impacts on Ocean Ecosystems
@Ann Period in many parts of the world, certainly warmer than the present-called Older Peron, this is period known in many cultures 'paradise': “At least a few commentators — anthropologists, folklorists, and others — have linked era of the Older Peron transgression and the Neolithic Subpluvial with tales of a "time of plenty" (Golden Age ; Garden of Eden) that occur in the legendary backgrounds of many cultures.” Enhanced biological carbon consumption in a high CO2 ocean, Riebesell et al., 2007. : “Here we show that dissolved inorganic carbon consumption of a natural plankton community maintained in mesocosm enclosures at initial CO2 partial pressures of 350, 700 and 1,050 atm increases with rising CO2. The community consumed up to 39% more dissolved inorganic carbon at increased CO2 partial pressures compared to present levels, whereas nutrient uptake remained the same.” Briefly about the lands: more efficient photosynthesis takes place at higher temperatures and CO2 - see figure here. Commentary on the figure quoted above is as follows: “The upper curve is the same for C4. From this it is clear that at double CO2 concentration, not only has the efficiency of C3 crops improved tremendously, but the temperature at which optimal photosynthesis occurs in C3 increases up to that of C4. Thus the vast majority of food crops will benefit hugely by increased CO2, and even more so by increased CO2 coupled with warming” In many parts of the ocean current was noted a significant increase in NPP. However, the NPP of the ocean yet we know very little ( Pratt, 2010.). Hoegh-Guldberg conclusions are strongly premature.Moderator Response: [Daniel Bailey] Problems with Riebesell et al 2007 have been noted (in abstract form here and in full text form here). As far as your next bit, partaking of material sourced to an extreme denialist blog is disappointing, Arkadiusz. Original peer-reviewed published sources are best for credibility. -
mozart at 00:52 AM on 9 February 2011Global Warming and Cold Winters
KR just a small addendum to your thought on doubling CO2. We have already increased CO2 by 24% since 1900 with a very modest effect on temperatures....that's a known relationship. So I see little reason to ignore that and go back to a pre industrial revolution base. What's of interest is the the likely future growth of Co2 and the temperature sensitivity to those changes. On the former point I would direct you to the Mauna Loa measurements...http://www.esrl.noaa.gov/gmd/ccgg/trends/. If you split the CO2 trends into decades, you find an average 81/90 of 1.545..91/2000 of 1.543....2001/2010 of 2.039 ppm per year increase. So we actually had a flat decade in the 90s, where CO2 was accumulating no faster than the 80s. A volcanic phenominon? In any case if you then include the 2000s, it would not be unreasonable to say we seem to be accelerating growth at a smoothed trend of 0.25 ppm per decade. At that rate it would take us 8 decades to get to a 4ppm per year increase. But many factors could intervene....slower global growth rates than in this China phase, carbon efficiencies per unit of energy, and the loss of our oil reserves. All of which would extend this number. -
muoncounter at 00:42 AM on 9 February 2011Articgate: perpetuating the myth that Arctic sea ice has recovered
#25: "I don't think anyone can seriously claim ... " That is really a multi-part statement. The claims are made: See the quote at the top of this post. Greenland glaciers have been advancing since 2006, Artic [sic] sea ice has returned to 1989 levels of coverage, and snowy, cold winters and cool summers have dominated northern North America and Europe The serious aspect is that these claims get repeated. People who don't bother to verify hear 'famous astronaut says' and their brains switch off. Then the amplification process begins: 'as everyone knows, the Artic has recovered'. That the claims are so easily shown to be false shows how impoverished the denier arguments are. -
Daniel Bailey at 00:35 AM on 9 February 2011Climate Change Impacts on Ocean Ecosystems
@ Ann (6) I know how you feel, for those thoughts have been my thoughts. It would be easy to sink into a morass of despair, overcome by the overwhelming nature of what lies before us. Why even try... Consider this, then:Once upon a time there was a wise man who used to go to the ocean to do his writing. He had a habit of walking on the beach before he began his work. One day he was walking along the shore. As he looked down the beach, he saw a human figure moving like a dancer. He smiled to himself to think of someone who would dance to the day. So he began to walk faster to catch up. As he got closer, he saw that it was a young man and the young man wasn't dancing, but instead he was reaching down to the shore, picking up something and very gently throwing it into the ocean. As he got closer he called out, "Good morning! What are you doing?" The young man paused, looked up and replied, "Throwing starfish in the ocean." "I guess I should have asked, why are you throwing starfish in the ocean?" "The sun is up and the tide is going out. And if I don't throw them in they'll die." "But, young man, don't you realize that there are miles and miles of beach and starfish all along it. You can't possibly make a difference!" The young man listened politely. Then bent down, picked up another starfish and threw it into the sea, past the breaking waves and said, "It made a difference for that one."
********************************************************************************* There is something very special in each and every one of us. We have all been gifted with the ability to make a difference. And if we can become aware of that gift, we gain through the strength of our visions the power to shape the future. We must each find our starfish. And if we throw our stars wisely and well, the world will be blessed. So be proud in what you do, daily. Lead boldly, walk with confidence, chin high. Pay it forward, save a life today. Make a difference, one starfish at a time. The Yooper -
Eric (skeptic) at 00:30 AM on 9 February 2011The 2010 Amazon Drought
Chris, I think it is too soon to tell if there is a trend in El Ninos getting stronger or more numerous. There seemed to be one in the 90's (minus Pinatubo) but that quieted down. Rob, I never doubted the strength of the correlation between El Nino and drought. That is simple causation as explained in the head post. Also I don't doubt that AGW will exacerbate the drought in some cases, specifically when Atlantic warming coincides with El Nino. Here's a paper http://www.springerlink.com/content/8415720180780275//fulltext.html that quantifies North Atlantic warming trends to supplement the Zeng paper. Their conclusion is 0.03 C per decade. -
Ken Lambert at 23:33 PM on 8 February 2011A Flanner in the Works for Snow and Ice calculations
MarkR #38 Its time to put some numbers on these arguments. We know for a doubling of pre-industrial CO2 to about 560ppm, the theoretical IPCC Eqan gives a F.CO2 of about 5.35ln(2) = 3.7W/sq.m. We know that Earth exchanges about 240W/sq.m with space averaged over the entire surface. ie. TSI/4 x 0.7. We know that the Earth has warmed about 0.75 degC at the surface since preindustrial times and the radiating temperature to space is about 255degK. So if we raise the radiating temperature by 1 degK then the S-B forcing will be proportional to T^4. The sum is roughly (256/255)^4 x 240 = 243.78W/sq.m, Difference 3.78W/sq.m. What we don't know for sure is what the temperature rise at the surface will be for a 1degK rise in the effective radiating temperature of the Earth. The suggestion is that 3degK will occur at the surface to cause 1degK at the effective radiating height in the atmosphere at which point (all other things being equal), the imbalance gap closes. This supposes an extra insulating effect in the atmospheric column of about 2degK due to the complex feedbacks of CO2 and WV, clouds, ice albedo etc at a CO2 concentration of about 560ppm. Interestingly enough Dr Trenberth suggests a S-B radiative cooling response of 2.8W/sq.m currently for a 0.75degK increase in surface temperature since AD1750. This coincides with a 0.75 degK increase in the Earth's radiating temperature via the simple sum (255/254.25)^4 x 240 = 242.84W/sq.m. Difference 2.84W/sq.m. This seems to suggest that for the first 0.75 degC of warming at the surface there has been no insulating effect at the Earth's radiating height or we would have seen a smaller temperature rise at that point than 0.75 degK if this CO2-WV enhanced effect has caused some of this warming so far. -
John Bruno at 23:29 PM on 8 February 2011Climate Change Impacts on Ocean Ecosystems
Thanks PM, KR and others. Maybe I'm wrong, but I think knowledge IS part of the solution, which is what SkepticalScience is all about. I know we need tech, policy action and social change, but I think this is coming, e.g., Obama to regulate greenhouse gases via EPA. I actually see all this playing out with a happy ending - but I am a pathological optimist... -
JMurphy at 23:16 PM on 8 February 2011Medieval Warm Period was warmer
hengistmcstone, you may be interested in reading another article on here : Was there a Medieval Warm Period? There, you will find a link to : Global Signatures and Dynamical Origins of the Little Ice Age and Medieval Climate Anomaly There is also a link to the press release of the above paper, which may be worthing looking at before you look at the actual paper. More reading, I'm afraid ! -
MarkR at 23:15 PM on 8 February 2011Articgate: perpetuating the myth that Arctic sea ice has recovered
#25: 'As predicted' is loaded, projected changes in Arctic ice include a full range with associated uncertainty. The possibility of further area collapse was mooted, but was far from a mainline prediction as far as I can tell. Here's a paper from '07 where they help explain it. 2007 was far below model projections and since then we've stayed below model projections. Phil Jones said no statistically significant warming at the 95% confidence level from 1995-2009. It is now (using '95-'10) statistically significant at that level. This is from the HadCRUT3 dataset which is only an atmosphere/surface measurement. If you look at ocean heat content, or latent heat invested in melting ice, or sea level (which integrates over those) then up to 2003 global warming was obvious in all of them. Since '03 we've seen significant rises in sea level and loss of ice, plus probably in abyssal warming, but perhaps not in 0-700m ocean heat content. Total polar ice is not decreasing? The data say that it is. Sure, Monckton and some other skeptics say otherwise, but I tend to run with the data. Antarctic sea ice is covered elsewhere on here. :) -
rayinkorea at 22:52 PM on 8 February 2011Ice age predicted in the 70s
...so we still wait for the name of the elusive institution of learning thepoodle went to ? I was a science major (starting in 1977) at the University of South Florida... (Tampa and St. Pete campuses) and we were learning about global warming in 3 of my classes I remember .. Ecology and both Biological and Geological Foundations of Oceanography ... talking about the physics and looking at the CO2 level data from Mona Loa and some temperature prediction models (which turned out to be remarkably accrate, I might add) It was even mentioned in my high school Biology class in 1975 (Kaiserslautern American High School, Germany) I don't remember anything about global cooling except a few referrals to media coverage .... -
Climate Change Impacts on Ocean Ecosystems
Thanks John Bruno for posting the talk. Very thought provoking, amazing that this information rarely makes headlines -
rhjames at 22:39 PM on 8 February 2011Articgate: perpetuating the myth that Arctic sea ice has recovered
I don't think anyone can seriously claim that Arctic ice has recovered. However, it hasn't continued to decrease since 2007 as predicted. We also have to consider Antarctic ice, which has been increasing for 30 years. We can't just be selective about the Arctic because it's convenient. We have to accept that, as Phil Jones said, there's been no significant warming for the past 15 years. Also total polar ice isn't decreasing. We have to be careful about the North West Passage being open - this isn't unusual - it's been open plenty of times in the past - before we had satellite measurement of polar ice. We need to be realistic about the claims we make. -
Riccardo at 22:01 PM on 8 February 2011Climate Change Impacts on Ocean Ecosystems
Ann you envision a possible tragedy, not the necessary outcome. The path out of this mess is clear and although apparently the will to follow it is lacking, the word "end" has not been written yet. Wars are won or lost in the long run. In any event, it is our personal duty to do the right thing, whatever it takes, whatever happens around us. We can not abdicate, we're not given this possibility. -
BillyJoe at 21:49 PM on 8 February 2011Articgate: perpetuating the myth that Arctic sea ice has recovered
#22 les, Seriously? You think they want to engage with science? Google "Harrison Schmitt" to view his business, political and organisational connections. I think you are being a little naive. There is every evidence that this guy is pushing an agenda and he doesn't care what data he dregs. Obviously you are just not up to his level of [self censored] -
Riccardo at 21:17 PM on 8 February 2011Articgate: perpetuating the myth that Arctic sea ice has recovered
Philippe Chantreau #21 I strongly agree that talking in terms of standard deviation is meaningless, the null hyppthesis being that there's no trend. But we know that the trend is there and the null hypothesis should be that there's no change in the trend. -
Ann at 21:14 PM on 8 February 2011Climate Change Impacts on Ocean Ecosystems
This is a scenario enrolling in front of our eyes that is almost exactly as I feared. Also we are beginning to see the impact of climate change on humanity: steeply rising food and energy prices (which is annoying for the wealthy nations, but a disaster for the poorer nations), social unrest, climate fugitives, a mounting number of starving people, a mounting number of casualties from natural disasters. And we are only seeing the very beginning. I think in hindsight, 2010 will go down in history as the year of the truth. The year the truth could no longer be denied. I have always been interested in history, and have always realized – contrarily to most of the people in the wealthy nations – that our current welfare and security are rather an exception in the history of mankind, and that this state of affairs may not last. Future generations – perhaps even the children living today – are going to have a hard time. Of course, the question is: what to do with this knowledge ? It is the single most important issue of our time, probably the biggest issue in the history of mankind. How can I continue going to work every day – solving some minor issues with our digital TV product or designing new features, new ways to make people spend some more money on TV - when this massive problem is lurking in the background ? It makes all human activity futile. International politics has failed utterly and totally. What are the other options ? To convince the world population, the people, what is happening and that immediate action is necessary. But as we experience, even educated people are hard to convince. In fact the problem is that people must almost have had a scientific training before they can understand the available evidence. And there are many people in this world that can hardly read or write. They are doing what they always do: do whatever it takes to survive. Choice is is a luxury, only available to the wealthy. What are we going to tell these people ? I don’t think mankind will go extinct. But in the future the global population will no longer be measured in billions – perhaps in millions. Perhaps those that survive will have learned the lesson and adopt another attitude towards the environment they live in and depend upon. One slight consolation is: nature will recover eventually. Nature is incredibly strong. Life survived the Perm-Trias mass extinction event, I am sure it will survive the human plague as well. But that is the extreme long-term vision.Moderator Response: [Daniel Bailey] See my response to you below @ 10. -
les at 20:50 PM on 8 February 2011Articgate: perpetuating the myth that Arctic sea ice has recovered
#20 John, Seriously? You think this is a low level? google "Pole Shift Threatens To Cause Weather Chaos prison planet" I think you guys are being unkind, though. There is every evidence that these folk really want to engage with science - the driving force of the modern era. Obviously they're not up to it, find it all a bit hard and confusing and, therefor, scary... -
Philippe Chantreau at 19:43 PM on 8 February 2011Articgate: perpetuating the myth that Arctic sea ice has recovered
Actually muoncounter, the shaded area around the average line is 2 standard deviations, so the current year would be more like 4 standard deviations below average. It is so far from average that talking in terms of standard deviation becomes kinda meaningless. I am wondering how, or if our usual skeptic contributors can possibly explain the thought process and motivations behind statements that are so glaringly wrong. What was Schmitt thinking? -
XPLAlN at 19:43 PM on 8 February 2011Crichton's 'Aliens Cause Global Warming'
"Crichton fails to see that the processes that formed the current paradigms in medicine and geology (and overturned the old ones) are same processes that have formed the consensus on climate change. The consensus used to be that human activity is too insignificant to alter the climate." Precisely. I've been working on a book like Crichton's Jurassic Park. In it, future entrepreneurs clone a Lindzasaurus Rex and a Spencerdocus from some blood retrieved from the talons of a preserved beardy-activiraptor who perished during the mass extinction at the AGW boundary. Er, on planet Earth. Anyway, although the two dinosaurs never escape, their logic leaks onto the galactinet. To cut a long story, Sam Neil saves everyone. -
Marcus at 17:32 PM on 8 February 2011How We Know Recent Global Warming Is Not Natural
Another point, Pirate. When climate change occurs naturally, CO2 *does* lag warming-within fairly well-defined bounds (between 200ppm & 280ppm). Between 1950-2010, though, CO2 rose *before* a significant rise in temperature can be detected. i.e. CO2 rose slowly throughout the entire 20th century, but the real upswing in temperatures doesn't begin until the 1970's. At the very least, CO2 increased precede the current warming trend by a good 20-40 years. Again, can you give us a *natural* cause to explain this? I doubt it. As to Milankovitch cycles, these operate on a time frame of *millenia*, not decades, & the next part of the cycle is meant to take us *away* from the sun-causing cooling-at least about 3,000 to 5,000 years from now.
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