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| Thread ID: 140464 | 2015-10-16 19:47:00 | Global Warming | jayal (1291) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1410082 | 2015-10-26 01:40:00 | Yes, and found he manufactures faulty Hockey Sticks. :) Have you perhaps had a look at the actual findings on that graph? I think I've explained before... |
Nick G (16709) | ||
| 1410083 | 2015-10-26 01:47:00 | Of course not its doesn't fit the head in the sand view that nothing is wrong if you can't see it | gary67 (56) | ||
| 1410084 | 2015-10-27 03:48:00 | Ivar Giaever shared the 1973 Nobel Prize with John Bardeen and Brian Josephson for work in solid state physics . Nobels are not handed out lightly and we can take it that Giaever deserved his award . But being an expert in one area does not make you right everywhere else, and Giaever's somewhat rambling address last July gives the impression of someone who is rather out of his depth . He starts by saying that when he first heard of global warming he spent a day on Google and was horrified by what he found . Near the end of his talk he describes a demonstration of how a single match burnt in room "the size of a large living room" produces the same CO2 concentration as all the worlds motor vehicles in one year . The point of this is not at all clear, but it looked like a fun exercise . I took a match from a box we have in the house and measured it . It was 43mm x 2mm x 2mm, so it has a volume of 0 . 172cc . The next thing was to weigh it, but kitchen scales aren't much good for something this small, so I dropped it in a glass of water . It floated (of course), but the top surface barely broke the surface of the water, so I took the density as 1gm/cc, giving a weight of 0 . 17gm . Now I needed the proportion of carbon in wood, and as far as I can find it appears to be pretty close to 50% by weight . So I have about 0 . 1gm of carbon - one decimal place is enough here . Our friend's room is 20ft x 20ft x 10ft which I calculate as 1 . 1x10^8cc . I assume that burning the match converts all the carbon to CO2 gas . Each CO2 molecule contains just 1 carbon atom, so multiply the carbon weight by Avogadro's number and divide by 12 to get the number of atoms and hence the number of CO2 molecules . I get 5 . 0x10^21 molecules . To get the concentration of CO2 in the room, divide the number of molecules by the room volume, which gives 4 . 6x10^13 molecules/cc . The original question was, how many matches must be burnt in the room to get the same CO2 concentration as produced by driving cars for one year . More interesting is to find how many matches are required produce the same concentration as in the atmosphere . In my previous post I got the atmospheric concentration corresponding to 400ppm to be 10^16 molecules/cc . So the answer to the question is 10^16 divided by 4 . 6x10^13, which my calculator shows to be 220 matches . Of course, it depends on the size of the matches . The real question is, so what? The issue here is not burning matches in sealed rooms, but how much atmospheric CO2 will cause a significant increase in the temperature of the atmosphere . With no CO2 the earth is unliveable; just under 300ppm gives the conditions under which human society evolved and to which it has adapted, and that adaptation has taken place over thousands of years . Above 400ppm those conditions will change in a number of ways, some of which can be predicted and others can't . That is where the debate should be focussed, not on whether CO2 can cause warming - it can . Not on whether the CO2 concentration is rising - it is . Not on whether the temperature of the atmosphere and oceans is rising - it is . Very good Jayess but I think we have to have the atmospheres cubic content as well as the emission from the worlds cars and ratio them out for a comparison . I’ve had other things to do but I’ll give it a go shortly . As for your appraisal of Ivar Giaever’s, I agree, he isn’t the greatest Public Speaker but then that’s not his job . My understanding is that he was a Fellow Member of the American Physical Society and was asked to support the Climate Change issue but when he checked their Physics/Mathematics he was horrified and resigned in order to keep his reputation intact . Again I agree with you, I don’t think he previously had any interest in Climate Science but it was the Physics that appalled him and after all this little experiment we’re discussing is straight out Physics . And I also agree with you that the earth’s temperature is rising along with the oceans, but 0 . 8°C in 130 years for temperature and 20cm rise per 100 years for the ocean is simply not worth worrying about . Mother Earth will do as she pleases, and much hand wringing and taxes won’t change a thing . But HERE’S ( . youtube . com/watch?v=PFA1Lz4Y9xc" target="_blank">www . youtube . com) a Geologist of some acclaim who has a sense of humour . Even mentions the All Blacks . ;) |
B.M. (505) | ||
| 1410085 | 2015-10-27 07:11:00 | From Scientific American: Exxon Knew about Climate Change Almost 40 Years Ago www.scientificamerican.com |
zqwerty (97) | ||
| 1410086 | 2015-10-27 08:14:00 | For anyone interested in global warming/climate change analysis, read realclimate http://www.realclimate.org/ The objections which BM and many others cling to are comprehensively answered and debunked on climatechange. And while the denialists play on, we continue to poison the planet killing rare plants and animals joining the extinction list. Tragic and not in the slightest bit funny. |
Winston001 (3612) | ||
| 1410087 | 2015-10-27 08:48:00 | From New York Times: Deadly Heat Is Forecast in Persian Gulf by 2100 www.nytimes.com |
zqwerty (97) | ||
| 1410088 | 2015-10-27 09:26:00 | ExxonMobil Targeting Journalists Who Report On Their Climate Corruption: www.popularresistance.org |
zqwerty (97) | ||
| 1410089 | 2015-10-27 18:22:00 | From Scientific American: Exxon Knew about Climate Change Almost 40 Years Ago www.scientificamerican.com But how could they have been studying Climate Change 40 years ago when Climate Change only became an issue after Global Warming self-destroyed in 2009? :confused: |
B.M. (505) | ||
| 1410090 | 2015-10-27 18:32:00 | For anyone interested in global warming/climate change analysis, read realclimate http://www . realclimate . org/ The objections which BM and many others cling to are comprehensively answered and debunked on climatechange . And while the denialists play on, we continue to poison the planet killing rare plants and animals joining the extinction list . Tragic and not in the slightest bit funny . Well Winston so far I haven’t found any answers in that link but I’ll keep looking because it’s quite extensive . In the meantime, would you be good enough to advise which animals have died because of a 0 . 8°C temperature rise, and which plants have died of obesity because of a 130ppm co2 increase? :confused: |
B.M. (505) | ||
| 1410091 | 2015-10-27 18:37:00 | From New York Times: Deadly Heat Is Forecast in Persian Gulf by 2100 www.nytimes.com Great stuff zqwerty, I loved this part:6792 Wow could reach 35°C and the Mecca sheep dip photo was a classic. |
B.M. (505) | ||
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