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#151
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rb608 wrote:
I'm not willing to have my family shiver in a cold house or sit in the dark for a .005% difference. but 300 million (or 3 billion) making a .005 (percent?) difference equals?? jeff (in awe of engineers, math, and the atmosphere...but it has been uncommonly warm in nc recently based on my 56 years of anecdotal experience) |
#152
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" wrote in
ups.com: On Mar 13, 4:17 pm, Scott Seidman wrote: Ken Fortenberry wrote in news:wcDJh.7140 : I don't know, but if the historical, all-time high before the industrial age is ~300 ppm and there is now 379 ppm (and growing) I'd venture a wild guess and say some of it anyway. Maybe one of these days we can talk the CO2 molecules into wearing little name tags while we count them so we can tell "natural" from "human". ;-) I can't find any reviews of the physics underlying the ice core data, but the idea that we can melt ice and "know" the CO2 history of the planet grates on me. Can anyone in the know tell me for certain that there wouldn't be Fickian diffusion of the gas throughout the core over the course of hundreds of thousands of years. Even very slow diffusion adds up, and it will smooth out the bumps in the CO2 record, flattening out highs and lows. I honestly don't know the answer, but it certainly is one of the things I'd ask about if I were refereeing. I'd almost guarantee that the climatologists who wrote the original Nature paper (cited more than 1,200 times!) don't know, either, and neither would the climatologists solicited for peer review. -- Scott Reverse name to reply I've been looking for reviews of that too. Let me know if you find it, I haven't had any luck. - Ken Just in case anyone else wants to sit down with google scholar, the original article is Nature 399, 429-436 (3 June 1999) | doi:10.1038/20859; Received 20 January 1999; Accepted 14 April 1999 Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica J. R. Petit1, J. Jouzel2, D. Raynaud1, N. I. Barkov3, J.-M. Barnola1, I. Basile1, M. Bender4, J. Chappellaz1, M. Davis5, G. Delaygue2, M. Delmotte1, V. M. Kotlyakov6, M. Legrand1, V. Y. Lipenkov3, C. Lorius1, L. PÉpin1,1, C. Ritz1, E. Saltzman5 and M. Stievenard2 I'm zeroing in on some of the other issues: # CRAIG, H, GRAVITATIONAL SEPARATION OF GASES AND ISOTOPES IN POLAR ICE CAPS, SCIENCE 242: 1675 (1988).[Abstract/Free Full Text] # RAYNAUD, D, THE ICE RECORD OF GREENHOUSE GASES, SCIENCE 259: 926 (1993). # RAYNAUD, D, SCIENCE 260: 1411 (1993).[Free Full Text] # SCHWANDER, J, THE AGE OF THE AIR IN THE FIRN AND THE ICE AT SUMMIT, GREENLAND, JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 98: 2831 (1993). I just printed out Proc. Natl. Acad. Sci. USA Vol. 94, pp. 8343–8349, August 1997 Colloquium Paper This paper was presented at a colloquium entitled ‘‘Carbon Dioxide and Climate Change,’’ organized by Charles D. Keeling, held November 13–15, 1995, at the National Academy of Sciences, Irvine, CA. Gases in ice cores MICHAEL BENDER*, TODD SOWERS†, AND EDWARD BROOK*‡ This has a section on "The Physics of Gases in Glaciers" I must admit I thought gases had two s's! Long section, but: "The diffusivity of an element or compound decreases with increasing mass and increasing atomic or molecular diameter. Thus each element or compound diffuses at a different rate, and each isotope of a compound diffuses at a different rate. In consequence, the covariation between the composition of one gas and another (e.g., CO2 and CH4) in firn is different from their historical covariation in air. The isotopic composition of a gas (e.g., CO2) in firn air also varies with the concentration of that gas in a way that is different from the historical relationship. The concentrations of gases and isotopes that diffuse most rapidly will be closest to their current atmospheric concentrations. Because light isotopes diffuse more rapidly, the concentration of a gas in firn air will be more depleted in heavy isotopes than was the atmosphere at the time it had the same concentration as a firn air sample. Differential diffusivity is a first-order effect that must be taken into account when interpreting data on the concentration and isotopic composition of gases in firn air and ice cores (7)." What it seems to come down to is that there's a relatively complex inverse model of all this stuff that needs to be applied. As inverse models are often ill-posed, of course, it's not clear to me that the pristine state of the atmosphere can be recovered. -- Scott Reverse name to reply |
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On Mar 13, 3:20 pm, wrote:
Now, see, if you didn't start with comical lies like this: I was curious to see what the hell caused 70-something replies in a few hours, so I read a few of them... And finish with ever so tedious crap like this: And whatever the case, Al and his Gorons are as full of **** as a Christmas goose. it might be easy for someone (who could almost certainly find more imaginative ways to waste time) to be tempted to take the vapid maunderings between seriously. Thank you. Thank you SO much for making it SO easy for SO many. Wolfgang who begins to worry that even if the boy ever DOES discover that he has something to say, it won't be worth the bother for anyone concerned. ![]() |
#154
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Scott Seidman wrote:
Ken Fortenberry wrote in t: Scott Seidman wrote: The answer is, of course, no. The same bunch of scientists who are suggesting we need to change our lifestyles to counter global warming are unwilling to put a firm estimate on how much our lifestyles contribute to global warming. More unable than unwilling, I imagine. So the crystal ball isn't perfect, it's still better to do something than nothing. Reducing greenhouse gases certainly won't make the problem worse but it might make the situation a little better. Or it might not. My agnosticism might damn me to hell if there really is a God. Should I thus believe, because its thus the safest option? pascal g... it's a gamble. (did you read the times piece on "darwin's god"?) frequently the safest option (assuming "safe" to be a positive, beneficial quality) is the best choice...no? what harm in the safe choice? and, i've come to the opinion you're damned to hell whether there's a god or not. You don't undertake a massive infrastructure change in the name of the environment because it "might" help. what is the "massive infrastructure"? changing from incandescent bulbs? turning off your computer? turning the thermostat down several degrees? You sink your resources into what careful analysis shows stands a reasonable chance of success. Of course, while all this analysis is going on, you don't stop turning off the lights in empty rooms. ok... it's a start... I'm a little sensitive these days, watching the steamroller of alternative fuels barreling over town planning and zoning boards. politics... it's confounding and confabulating. but isn't there something decent and right and sensible about alternative fuels (assuming solar and wind are included as "fuels"... corn too)? i've observed the horror of personal ideology, greed, and money perverting science. still, there seem some things we can accept and do about mankind's impact on global warming. what do you think will help? jeff |
#155
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#156
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![]() "Old Guy" wrote in message ... Ken Fortenberry wrote: Old Guy wrote: Ken Fortenberry wrote: That's what I thought, Mr. Guy. You're a one-trick pony. All you got is the one crackpot video that impressed the hell out of you and that should be enough to convince anybody. That's not the way it works, Mr. Guy. Like I said, when you get some facts let me know, until then you're just so much anonymous noise. Yeah. Its a crackpot video because it disagrees with your POV. Keep that mind of yours closed. When you get some facts let me know, until then you're just so much anonymous noise. Let's not lose sight of the FACT that you're refusing to review the video. Its only crackpot because it disagrees with your POV. Please don't view the video. I'm having way too much fun observing someone as closed-minded and narrow as you. I watched or listened to 90% of the vid and found it to be just so much Right-wing propaganda of the Lefts hatred of the advance of capitalist progress. Otherwise it was a great piece of Right-wing propaganda. Op |
#157
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On Mar 13, 5:54 pm, jeff wrote:
wrote: That's actually used to convert the weak-minded. (See Pascal's Wager) KenF should be appalled that he's using the same logical argument as the fundies. - Ken well damn... i hadn't yet reached your post when i did the pascal ploy on our friend scott... but, i disagree with the "weak-minded" ploy. it's actually a strong argument in matters unscientific to say "what's the harm", isn't it? if you're going to bet on a potentially life-altering (or after-life) issue, why not the safe wager? I just can't help myself. What exactly is the "safe wager" for the after-life? - Ken |
#158
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#159
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On 13 Mar 2007 20:35:20 -0700, "
wrote: On Mar 13, 5:54 pm, jeff wrote: wrote: That's actually used to convert the weak-minded. (See Pascal's Wager) KenF should be appalled that he's using the same logical argument as the fundies. - Ken well damn... i hadn't yet reached your post when i did the pascal ploy on our friend scott... but, i disagree with the "weak-minded" ploy. it's actually a strong argument in matters unscientific to say "what's the harm", isn't it? if you're going to bet on a potentially life-altering (or after-life) issue, why not the safe wager? I just can't help myself. What exactly is the "safe wager" for the after-life? - Ken Postulate that there is a god / are gods, but they're hidden, so we ordinary mortals can't see any evidence of them. If we turn agnostic, then the gods may blame us, but they may also be understanding (doubtful, from all the god legends I've heard). However, if we don't believe, but pretend to believe and the god / gods are omniscient, I'd suspect that the pretense is going to be put down as a black mark / flunk grade by said gods. And there's no doubt whatever that black marks from gods tend to lead to bad experiences. Most gods make the nastier of our last two presidents (choose whichever one is opposite your party of preference.) look like sweetie pies. You've got your choice of Arkansas State Troopers with guns and billy clubs and Vince Foster versus Gitmo and the military prisons in Iraq for starters. There's no way pretending to believe comes off as a safe or secure option as far as I can see. My safe bet for after death is decomposition, just like any other animal or virus or plant or rock. If I wake up to something else, I'll be one surprized chickie. Because I can't come up with any philosophy / belief system that treats humans as any different than any other form of living matter (or mineral, for that, too.) to me. -- r.bc: vixen Minnow goddess, Speaker to squirrels, willow watcher. Almost entirely harmless. Really. http://www.visi.com/~cyli |
#160
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Cyli wrote:
On 13 Mar 2007 20:35:20 -0700, " wrote: On Mar 13, 5:54 pm, jeff wrote: wrote: That's actually used to convert the weak-minded. (See Pascal's Wager) KenF should be appalled that he's using the same logical argument as the fundies. - Ken well damn... i hadn't yet reached your post when i did the pascal ploy on our friend scott... but, i disagree with the "weak-minded" ploy. it's actually a strong argument in matters unscientific to say "what's the harm", isn't it? if you're going to bet on a potentially life-altering (or after-life) issue, why not the safe wager? I just can't help myself. What exactly is the "safe wager" for the after-life? - Ken Postulate that there is a god / are gods, but they're hidden, so we ordinary mortals can't see any evidence of them. If we turn agnostic, then the gods may blame us, but they may also be understanding (doubtful, from all the god legends I've heard). However, if we don't believe, but pretend to believe and the god / gods are omniscient, I'd suspect that the pretense is going to be put down as a black mark / flunk grade by said gods. And there's no doubt whatever that black marks from gods tend to lead to bad experiences. Most gods make the nastier of our last two presidents (choose whichever one is opposite your party of preference.) look like sweetie pies. You've got your choice of Arkansas State Troopers with guns and billy clubs and Vince Foster versus Gitmo and the military prisons in Iraq for starters. There's no way pretending to believe comes off as a safe or secure option as far as I can see. My safe bet for after death is decomposition, just like any other animal or virus or plant or rock. If I wake up to something else, I'll be one surprized chickie. Because I can't come up with any philosophy / belief system that treats humans as any different than any other form of living matter (or mineral, for that, too.) to me. one of the criticisms of the wager. still, developing a pretense wasn't the goal of the wager though. ... |
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