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Author Topic:   Global Warming... fact, fiction, or a little of both?
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 1 of 113 (242274)
09-11-2005 2:13 PM


I have recently seen comments by EvC members discussing Global Warming Theory (GW) as if it is some well established scientific theory, or perhaps even a fact. Some have also in the past championed Kyoto, lambasting people unwilling to sign it. It appears that to question or even doubt GW is a sign of great ignorance in the face of great evidence, including that we have measures that are likely to produce positive results.
I also recently read Michael Crichton's latest novel State of Fear, which slams GW and concepts of managing the climate. In addition to pure fiction, Crichton did a pretty solid job of presenting actual data, and I do mean research data on that topic which was contradictory to GW. Furthermore it was not just from oil companies and such, but from scientists who are generally supportive of GW, or want more GW research.
This has put me in the mood to find out why people, on either side, feel confident in their position. What evidence have they used besides generalized media hype, to come to their position.
Let's say I am currently an agnostic on this subject. When I was in geology, I was specifically working with/studying under a professor of paleo/geoclimatology. He was in no way an industrial plant, and quite environmental minded. Yet he was quite skeptical of GW. He did not see anything in the data to support the very specific conclusions that GW entails. And I have to say, at the time, and have not since seen anything to support it. I admittedly may have missed some stuff, but Crichton's arguments appeared to align with what I had seen before.
Here are the issues which need to be shown...
1) That the Global Average Temperature is in fact rising.
2) Given that temps have risen and fallen over earth's history beyond what we have so far experienced, that the rise is uncharacteristic of previous fluctuations (perhaps faster).
3) That accumulation of carbon dioxide and other "greenhouse" gases has occured in the atmosphere, and coincided accurately with the rise in temp.
4) That human mechanical/industrial emissions are the source of that rise in greenhouse gases.
5) Based on all of the above, what is the modelled effects of this change on the climate and environment, and what assures these models' accuracy?
6) Sort of optional, is that the model of greenhouse heat trapping is what is responsible for the global rise in temp. After all industry will result in some increase of carbon dioxide and increased industry (which we've had) will thus create an increase in that increase. Just because there is a rise in temp during that increase in gases, does not mean the greenhouse effect is the reason.
7) Extra credit, show what scientific models indicate that Kyoto would be effective at reversing or eliminating the greenhouse "threat".
I will leave you all with something that Crichton mentioned, and I had forgotten. Before all of this GW stuff, there was a time when people were discussing how we were entering the next Ice Age and somehow contributing to that. For those not old enough to remember, not only was that a theory but freak weather occurences of extreme winters were used of evidence for this trend at the time, just as things like Katrina are used to justify GW now.
From threatened Ice Age to threatened Warming all within a period of twenty years. The Ice Age theory ended up being a fad, will GW suffer the same fate? Please provide some excellent evidence in either direction.
(AbE: My thoughts on placement are Is it Science, or Coffee House)
This message has been edited by holmes, 09-12-2005 02:59 PM

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

Replies to this message:
 Message 4 by nwr, posted 09-13-2005 9:52 AM Silent H has replied
 Message 5 by jar, posted 09-13-2005 10:21 AM Silent H has replied
 Message 7 by clpMINI, posted 09-13-2005 11:16 AM Silent H has replied
 Message 18 by Mammuthus, posted 09-14-2005 5:32 AM Silent H has replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 10 of 113 (243011)
09-13-2005 3:42 PM
Reply to: Message 4 by nwr
09-13-2005 9:52 AM


Re: My view of global warming
Heheheh, I want to skip your answers to my points (especially as they did not include evidence) and deal with something else you said within your post.
I remain uncertain of arguments about greenhouse gasses. But this really doesn't matter. The impact of human activity on the ecosystem is enormous, and it would be remarkable if it did not have seriously deleterious effects. We see many impacts that we know are human caused. We need to change our behavior, and perhaps find ways to cut the growth in human population size. And we need to start now.
This is exactly the point of Crichton's book, and if you haven't read it, you probably should. People seem to have gotten into the habit of, and perhaps desire to, view everything human civilization does as bad, and nature on its own as somehow beneficial.
One should note straight off the bat that there have been mass extinctions throughout earth's history, big and small, well before man ever got here. The earth is not necessarily a safe place even when left to its own devices.
There is no question that man has an effect on the environment at large in some fashion. Any creature using up the resources we use will have an impact of some kind.
But why are all or most impacts viewed as some objective "wrong"? Change has been the history of the planet, and there is no logical imperative that change due to man is inherently "unnatural" or "incorrect".
If we do not have a clear picture as to how our earth functions, and so what effects we are having, does it make sense to say we MUST make changes and especially that we must do so NOW? How can we start to change what we are doing now, if we don't actually know what changes need to be made?
Don't get me wrong. I started with some of the basic feelings you seem to have, and indeed would prefer as little impact from humans as possible. But I have been impacted by the lack of evidence for any specific problems, or that humans are culpable for some specific problems, not to mention any good theoretical solutions, and so my initial position has been shaken.
Is it just irrational guilt and misanthropy driving the desire to view human effort as intrinsically harmful? That we must "change our ways" smacks of religious pretension.
Apparently some of the climate models do predict that global warming will quickly lead to a new ice age.
Yes. If someone came up to you and said global warming is going to create a new ice age, wouldn't that seem just a little bit problematic?
There are no ice caps on Venus. If we are suffering from global warming it is inconsistent to suggest we will be forced into a vast lowering of temperatures.

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 4 by nwr, posted 09-13-2005 9:52 AM nwr has replied

Replies to this message:
 Message 16 by crashfrog, posted 09-13-2005 5:41 PM Silent H has replied
 Message 17 by nwr, posted 09-13-2005 7:16 PM Silent H has replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 11 of 113 (243014)
09-13-2005 3:49 PM
Reply to: Message 5 by jar
09-13-2005 10:21 AM


You have seen the same kinds of things that I have then, outside the specific GW debate of CO2 content and local flux in rising temps.
As a side question, if mankind managed to stabilize world temps that would be a major blow to the "naturalness" of our world. Would that be good or bad?
For me, the question should be,"If it happened, what would be the effects and how could we prepare so that we can minimize adverse effects?"
Agreed. I mean I think we should be trying to minimize our largescale outputs as much as possible, and immediate detrimental effects (like deforestation for no credible reason). But given the nature of our earth, thinking that we should be planning on having a stable temp system, and that reducing CO2 emissions will achieve that, seems a bit silly.

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 5 by jar, posted 09-13-2005 10:21 AM jar has replied

Replies to this message:
 Message 12 by jar, posted 09-13-2005 4:24 PM Silent H has replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 13 of 113 (243042)
09-13-2005 4:36 PM
Reply to: Message 7 by clpMINI
09-13-2005 11:16 AM


Re: Global warming from the people who study it...
Thanks for your response.
I think that it is a real deal, and that we shoould take it seriously (precautionary priniple).
I am hesitant to claim it is the real deal as it is currently being sold and therefore cannot take it seriously. I do believe it should be looked at, but not treated as if it has some credible basis.
I abhore the precautionary principle. Anyone telling me that we must act on our fears before we have a sound basis to say that our fears are correct, and a sufficient plan of action on how to deal with the problem, sort of offends me. It reminds me of religious zealotry and blind panic. REPENT and DO WHAT I SAY! Yeah? right.
1) I sort of take it for granted that there is evidence for a global rise in average temperature. Some seem to hang their hat on that. But GW is not just a rise in temp, as the earth has seen that many times before, and as we see from your clip, does not necessarily mean global impact...
The warming has not been globally uniform. Some areas (including parts of the southeastern U.S.) have, in fact, cooled over the last century. The recent warmth has been greatest over North America and Eurasia between 40 and 70N. Warming, assisted by the record El Nio of 1997-1998, has continued right up to the present, with 2001 being the second warmest year on record after 1998.
Not only does this show that sections can remain the same or cool, but some of the warming has a nonmanmade source.
Global surface temperatures have increased about 0.6C (plus or minus 0.2C) since the late-19th century, and about 0.4F (0.2 to 0.3C) over the past 25 years (the period with the most credible data).
I should also point out the obvious. As noted above while temps have been climbing (global average) there is very little credible beyond the last 25 years. Unfortunately our knowledge of global temp fluctuation over small periods of time (which is all we have on hand) is sketchy, and if anything seems to suggest many fluxes.
This leads to the next point...
2) Not only did your clip discuss external heat sources as a possible reason for the current flux, it suggests something much more profound and really what I am driving at here...
With only 20 years of reliable measurements however, it is difficult to deduce a trend... There are many indications that the sun also has a longer-term variation which has potentially contributed to the century-scale forcing to a greater degree. There is though, a great deal of uncertainty in estimates of solar irradiance beyond what can be measured by satellites, and still the contribution of direct solar irradiance forcing is small compared to the greenhouse gas component. However, our understanding of the indirect effects of changes in solar output and feedbacks in the climate system is minimal. There is much need to refine our understanding of key natural forcing mechanisms of the climate, including solar irradiance changes, in order to reduce uncertainty in our projections of future climate change.
You stated earlier that it is a "real deal", but how can it be with very straightforward commentary by nonbiased scientists that our records are poor and there are many things we must understand (mechanisms) before we can be certain about the validity of our projections?
3) I am also pretty certain that records show an increase in green house gases. That only stands to reason. The important question is if they are actually matched to the increases in temps we see, specifically according to the model GW theory suggests.
NOAA states a rise from 280 to 370ppm over the last 100 years, and postulates it could rise to 490-1260ppm by the end of another 100 years.
That may look large in and of itself. But in reality what do those figures mean for the atmosphere as a whole? What does it take to have an effect on the climate as a whole?
I did not find anything on this at NOAA but maybe I missed it. Intriguingly the Netherlands is blocked from accessing some of the data pages on global temps.
I have seen graphs that show amazing correllation between post industrial revolution CO2 levels and increases in temperatures. I will try to find one online.
Correlation does not equal causation. And in a world of fluctuating temps, what is the chance that an increase in usage of a substance (and so emission) might coincide with a flux? I should add I have seen some not so amazing graphs on the same topic.
Sorry to plug Crichton's book some more but he includes some interesting info you might want to look at. I will try and find some of the graphs he used on line.
I sort of view it as I view hybrid cars. Like a bridge until the best solution (hydrogen) is reached, though not a complete solution, it is a heck of a lot better than doing nothing and expecting everything to be fine.
I think there is much to be said for switching away from fossil fuels, that has nothing to do with GW. For anyone claiming that hydrogen is the "best" solution I am forced to ask what source you feel is best to produce all this hydrogen we'll be using?
I think it is really clean and one of the better fuels for not making cities smoggy and smelly, but there are ecological impacts from what we use to create/free the H.
Please don't feel that I am trying to punk on you. If I come off too harsh, let me know and I'll tone it down.

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 7 by clpMINI, posted 09-13-2005 11:16 AM clpMINI has not replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 14 of 113 (243046)
09-13-2005 4:45 PM
Reply to: Message 12 by jar
09-13-2005 4:24 PM


There are some pretty strong indications that CO2 is a primary player.
I have yet to see it. Please share.
The idea of Global Warming leading to an ice age is not strange or hard to understand at all. In fact, anyone who cannot see at least one, perhaps more, mechanisms that would cause just that must be living in some vaccuum.
Well yes and no.
The idea of rising global temperatures allowing for ice ages is understandable. Ice Ages are the product of many different factors.
The idea that GW would lead to an ice age is contrary. The idea of temperature trapping is not regional but global in scale and so hardly allowing for vast regional cooling. That is one of the whole problems of saying GW theory is what we are experiencing.
Intriguingly prophets of GW theory point to glacial retreat as signs of GW, and dismiss glacial advances (which are occuring in some areas) which tends to suggest that they themselves do not allow for new ice ages as part of their theory.
But please, pretend I am living in a vacuum. Explain how a layer of CO2, trapping heat within the entire earth atmosphere will allow for ice ages. What should I be looking for as a sign of such an ice age?

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 12 by jar, posted 09-13-2005 4:24 PM jar has replied

Replies to this message:
 Message 15 by jar, posted 09-13-2005 5:13 PM Silent H has replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 19 of 113 (243246)
09-14-2005 6:02 AM
Reply to: Message 15 by jar
09-13-2005 5:13 PM


It's likely that the term Global Warming is as bad a moniker as Big Bang. The condition that is more likely is a return to what appears to be normal which a violent shifts between climate stages with short periods and great variability.
Well this is where we are being realistic, right? Take a look at actual statements by proponents of GW, and the original models (some still clung to) espoused.
Remember Venus is one of prime examples used. It was practically the genesis of modern GW theory and often our explorations there are now extolled as being the way we first understood the possibilities of GW.
Crichton also addressed the shift now taking place in environmental circles. It started with "ICE AGE! DO SOMETHING! PEOPLE BAD!" to "GLOBAL WARMING! DO SOMETHING! PEOPLE BAD!" to more recently "DRAMATIC (or ABRUPT) CLIMATE CHANGE! DO SOMETHING! PEOPLE BAD!"
If it GW isn't really the issue any more then let's be honest and chuck it and say it is the possibility of more shifting and variability. Is that good or bad? Let's work on the science.
Global warming melts the Arctic Ice. It's possible the extra fresh water melt could turn off the Gulf Stream, block warming, moderating effect. The result could well be Ice Ages, sheets of Ice covering much of Northern Europe that would be frozen today were it not for the Gulf Stream.
Okay here's the problem. Cold water sinks while warm water stays on top. It is true that salinity has its say, but there is no definitive concept that fresh water will not mix and so stay around to block incoming gulf currents.
Added to this is the fact that winds help drive those currents. It is not simply sinking cold water somewhere, popping up warm somewhere else. The sun heats the air and the water and the effects of earth's rotation drive the results winds in a specific direction which drives the currents in a specific direction.
That creates both the upwelling and the sinking cycles, as well as the gulf stream.
Furthermore, if Ice is growing (that would be an ice age) that suggests a shift in where the ice is, but not necessarily a difference in total ice like a typical ice age.
I am of course open to more evidence on this point.

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 15 by jar, posted 09-13-2005 5:13 PM jar has replied

Replies to this message:
 Message 28 by jar, posted 09-14-2005 9:33 AM Silent H has replied
 Message 110 by bkelly, posted 10-12-2005 6:03 PM Silent H has replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 20 of 113 (243248)
09-14-2005 6:20 AM
Reply to: Message 16 by crashfrog
09-13-2005 5:41 PM


Re: My view of global warming
Many human-caused climate effects are going to have long-term, negative consequences for humans. To my mind that's what makes them "wrong." I don't think that humans should refrain from any impact whatsoever; we do have to live on this planet and should the global climate naturally change in ways that are not beneficial to us I think it's entirely appropriate for us to attempt to counteract that change.
Agreed in part. I don't think its useful or accurate to say many "are" going to have longterm negative effects. That is to set into motion a bias which will effect research.
What is more useful, and I think you'd agree with this alteration is that everything humans do has the "potential" to have both short and longterm negative consequences for humans. Thus it is important for us to be able to accurately model what impacts we may have, and minimize the negatives.
I think the picture is clear enough, quite frankly. Anthropogenic climate change is pretty well-supported; so much so that the burden of evidence is now on those who deny anthropogenic climate change, and I have yet to see any of those people put forth any reasonable conjecture. We know what the climate is doing and we know what's causing it
The point Crichton makes, and I am raising here, is that the picture is not clear. It is not well supported at all. At least it sure wasn't when I was specifically learning climate research under a paleoclimatologist who was also baffled at the strong statements being made.
If it is clear and well supported, then it shouldn't be hard to show that support. I am not blaming you for feeling the way you do because I know the messages are everywhere. But ask yourself if you actually reached your conclusion by looking at actual studies which stated they had reached any realistic models?
Now perhaps the state of knowledge has changed since I was working in that area. I totally grant that possibility. But I have not seen anything definitive, and Crichton had some interesting counters.
We can already see much of the original GW concept shifting to drastic change in weather, because much of the original model doesn't seem to be panning out. More than likely because we are discovering that the atmosphere is much more complex and so simple concepts like GW are not accurate.
Global warming doesn't mean, of course, that every point on Earth gets hotter.
Not all at once, but the effect is inconsistent with vast new ice ages. Venus was the projected model.
Good thread, Holmes. Great posts from you so far.
Thanks, and don't take my replies to harshly. In a way I am playing devil's advocate here. I am basically and environmental friendly guy. Its just that I went into that field and went through orgs focused on environmental issues, and came away pretty stunned.
If there is evidence I want to see it brought out and I will be a bit harsher having been "bitten" the first time around. But that is of course a reaction to my own feelings of gullibility.
Not sure if you like Crichton, but it might be an interesting read for you. Definitely could get some of the juices flowing.

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 16 by crashfrog, posted 09-13-2005 5:41 PM crashfrog has replied

Replies to this message:
 Message 23 by crashfrog, posted 09-14-2005 7:43 AM Silent H has replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 21 of 113 (243249)
09-14-2005 6:26 AM
Reply to: Message 18 by Mammuthus
09-14-2005 5:32 AM


I agree with everything you said (especially the last two paragraphs).
In a way I am trying to advance Crichton's challenge to GW in this thread, and perhaps take on the character (or spirit) of his antiGW guys. I think it is a way of challenging scientific method itself, or rather sloppy methodology, using a specific context.
It is essentially the same thing I tried to generate with my Rind Study, but without the sex stuff which seemed to get in the way.
I'm assuming you have more up to date paleo and modern climate info than I do since you are still in the field. Were C's refs pretty accurate, or did you spot some errors?

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 18 by Mammuthus, posted 09-14-2005 5:32 AM Mammuthus has replied

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 Message 24 by Mammuthus, posted 09-14-2005 8:02 AM Silent H has replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 22 of 113 (243251)
09-14-2005 6:47 AM
Reply to: Message 17 by nwr
09-13-2005 7:16 PM


Re: My view of global warming
If you think that is what I am saying, then you have misunderstood me.
I wasn't trying to say that is what you were saying, but I have to admit some of your comments seemed aligned with such notions.
There was a negativity and immediacy which felt less evidence supported than emotionally supported.
The fact is, that nature is a complex system of delicate balances. If we push too hard, we risk some major systems going out of balance. And the results could turn out to be disadvantageous to our own species.
Nature certainly is a complex system, and within it are many balances. Some are more delicate than others. And one thing I was trying to point out is that some parts of our system are not balanced at all. To call our climate "balanced" sounds almost wholly contradictory to my understanding of the evidence.
I think humans should be cautious in making big environmental changes. But I also think it is important to not assume everything we do is a big environmental change.
GW or climate change due to rising levels of industrial gases is a Possibility. But I have yet to see solid evidence that it is a Reality, much less that it will have longterm consequences of the magnitude being discussed. Extinction? I just don't know.
That's like saying that we shouldn't have done anything about hurricane Katrina because we didn't know exactly how it would work out.
No, that is a wildly inaccurate assessment. We know what hurricanes are. We know what they can do. And we have known for a very long time what flooding issues we had in the LA region, specifically in conjunction with hurricanes of great magnitude.
We can model hurricane effects and make predictions on the scales we were facing. GW is simply not in that same category.
The fact is, that we do see troubling changes. Global warming is one of them. The decline of fisheries is another.
No offense, but this sounds like pat mantras, and not evidence. Trust me, I am on your side with wanting to protect things. I'd even like to see the reduction in emissions for many other reasons.
But I cannot accept simply stated changes as signs of apocalyptic changes, or even "troubling" changes, without reason.
We are talking about stable systems going out of balance. It is very difficult to predict the consequences. We might have to wait until it happens before we can have a clear idea as to what those consequences will be. By the time we can document specific problems, it may be far too late to do anything, except perhaps distribute cyanide pills.
This is patent hysteria. Even the most atrocious models of GW effects are unlikely to see anyone taking CN pills in your lifetime or the next generation.
Climate has never been in balance, or at the very least I'd like you to present me with any evidence it has been in balance. As far as I have seen its been chaotic and changeable throughout history. Hell, we've been through three major atmospheres!
To live life with the rule that one must not do until we can be sure no effects will be had, because waiting for signs means it may already be too late, is a recipe for needless inaction and antiscience. If we are going to be this excited we might as well hand out the pills right now.
A more realistic approach is to be interested in the possibility and improve our scientific knowledge as well as model making abilities.

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 17 by nwr, posted 09-13-2005 7:16 PM nwr has replied

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Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 25 of 113 (243268)
09-14-2005 9:06 AM
Reply to: Message 23 by crashfrog
09-14-2005 7:43 AM


Re: My view of global warming
Crichton is a novelist. Not trying to be elitist here but none of his work underwent peer review, and I've heard some pretty strong rebuttals to the so-called "science" of his novel.
I'm not trying to claim this was a fantastic book, or one of his best. Nor was I trying to champion that he was anything other than a novelist. I am well aware that he is into speculative fiction, which is fiction.
His book Timeline was extremely speculative to the point of absurdity, and Prey was not a whole lot better.
I happen to like his writing in any case, but then again there is no accounting for taste.
The interesting part, and this is what makes State of Fear different than his other novels, is that he actually has real data within the book. He quotes actual science literature (and I do mean he gives complete citations), and the last 41 pages are nonfiction. Some of it is an explanation of what his personal views are, followed by 28 pages of reference material (an actual bibliography).
I was not at all refering to the fictional portions, I was talking about the nonfiction data and analyses. I might also note that he cites some of the research which is for GW, and mentions some of those with contrarian data are supportive of GW theory.
Crichton stacks the deck - his protagonist never seems to argue with anybody with any real data:
And so here I sit waiting for some real data from somebody. I was in the field at one time and saw nothing. Since then I have seen nothing (but admittedly have not been watching closely). Then I saw a novel filled with purely nonfictional real life science data which supported what I had been seeing in the past, and so I am raising the question.
The fact is he DID support his position with real data, it is inconclusive (as the last person who cited NOAA's own info proved) to potentially contrary.
Crichton never has his mouthpiece argue against another scientist who reads the evidence on climate change differently and can cite literature to back his or her view as well. In our world--the real world--you can find a small army of these. I have interviewed many of them, heard others lecture, and met still more at conferences. In Crichton's universe, however, they seem not to exist.
That's an interesting stance for a critic to take, as it appears the person failed to read the last 41 pages which dealt with data. It is true that in this book Kenner does not confront any scientist with an opposing view. The gist of the book was that science was allowing public political movements to shape science and message coming out of science... thus he was dealing with environmental activists who were supposed to be like most people, well meaning but not actually scientists.
And what the critic also failed to mention is that while he did not run into these small armies that the critic talks to, the character was using actual assessments from real scientists... it appears the small army of scientists the critic does not speak to.
I'm not saying that the wiki is gospel. If you see inaccuracies perhaps you'd be kind enough to edit the article, or suggest edits.
I will take a look, but I was actually hoping for responses from people within the science community to produce real evidence. I don't hold it against you that you are not in that field, and must rely on what the primary message appears to be. What I am hoping to generate is some skepticism or real evidence.
internal debates about the extent of the climate change, or the degree to which human industrialization is responsible.
Unfortunately this is critical when we move to discuss GW as an environmental concern, as well as ways to affect it. This is quite unlike evolution in that we are trying to manufacture change in response to a theoretical process. Without understanding the above, environmentalist efforts are almost directly analogous to those who hear about evolution and suggest eugenics is the only hope for mankind.
But the idea that there is no trend of global warming beyond the usual annual temperature variation, or that its coincidence with human industrial activity is simply chance, gathers almost as little support among the scientific community as creationism does.
This is simply false. You have already seen at least two others here, one involved with paleoclimatologists who said there is no sense of any trend beyond the usual temp variation. If anything we seem to have been within a period of uncommon stability.
Unless I see a mechanism I am loathe to suggest that greenhouse gases are to blame for anything. That is not like creationism nor treated like creationism among scientists in that field. That is asking for evidence for a mechanism's existence.
You just saw in cplmini's post that NOAA (a rather definitive agency on climate data for the US) does not support the above stance. It clearly discusses the dearth of info we have on climate, much less the connection between manmade gases and climate change.
I will read the wiki entry.
If you ever held the idea that global warming simply meant that it was going to get hotter everywhere, then I believe you held that position in error.
I will ask that you please not talk down to me on this one. I could be in error, but it is quite unlikely. GW is a specific theory. It is (simply enough put) that greenhouse gases, will create an envelope or seal which traps energy within the environment. Its described mechanism was very simple and analogous to what we see on Venus.
The problem was that it was so simple, gases will stay and trap. Hence "greenhouse". Now it is recognized that it won't or can't be so simple, and as Jar has already noted perhaps the terms GW and I will now add "greenhouse" are not so accurate.
It is true that the theory started simple but the attempt to find mechanisms has produced complications so the model becomes more complex. My slam is on retaining the simple idea then. Why keep it? Why discuss it at all as a real thing?
Anthropogenic climate change doesn't mean that the warming trend persist forever. The warming trend itself has consequences, which may include stimulating a period of global cooling.
I agree, that is why GW is not the correct term or model is it? Note that my thread title includes "a little of both". What we are discussing then is simply the possibility of manmade sources of climate change. And rising temps or lowering temps are all part of this mix, and neither actually a sign of anything in specific until we have a model which takes into account the past and can make some valid predictions.
But I see nothing inconsistent about the idea that global warming could trigger some kind of massive cool period, any more than I find it inconsistent that my refrigerator makes my kitchen hotter, or that Harrison Ford can build an icemaker powered by heat in "The Mosquito Coast".
There are changes which we should and should not expect to see. While temporary localized changes could produce some cooling, the trap effect would mean there is a limit to this and so negate full "ice ages" as we commonly refer to them.
Ford's fridge is a great analogy. The ice produced had to be very localized. Now imagine that same fridge within an oven of ever increasing temp. Less and less ice or at least within shrinking borders could be produced/maintained.
Well, I really can't stand his writing style. Drives me up the wall. The guy writes about as poorly as Clive Cussler, in my opinion
By all means then, do not read it. I really like his writing, even when its not his best. Taste is completely subjective and I don't think less of anyone for not liking him.
Just because he pads the end with a bunch of footnotes doesn't mean that he's presented the whole story, or even a balanced look. It doesn't mean that he's done his research and presented all the relevant info instead of just cherry-picking from the avaliable data.
This is a valid point and part of why I started this thread. From my own look at the real data years ago, it was the GW theorists that were cherry picking. And I have yet to see anything beyond cherry picking. Thus it roused my interest in challenging my own ideas, which had already been shaken earlier.
I've gone from Ice Age believer, to GW believer, to (after finally looking at evidence) a GW doubter, then stayed in stasis. This book reminded me of that journey, and held what I thought was a valid assessment of the sloppiness of modern science, the fadism which has crept back into it, and I really want to expose some of that while trying to get back up to speed.
but I think you're going to regret making his novel the centerpiece, rather than his data. It's fine, of course, to use it as a springboard, but I think it's a mistake to wield his novel like any sort of authority, especially since it's been roundly criticised by the scientific community.
I only mean it as a springboard. I do not hold it as an authority. I mean I didn't mean to. If it came off that way then I have made an error in writing about it.
I was trying to generate some factual responses on the state of knowledge regarding climate. I figured some of his points (which I don't think I've even mentioned) could fall flat, while others would be supported.
In any case it would benefit all by looking at some real data and questioning how we come to conclusions in science, especially those that deal with hot button items which many assume to be true regardless of the state of data.
I was not aware that the data in Crichton's book had been roundly criticized by the scientific community. I'd be interested in knowing where to find some of that. It seems a little strange since he supplied info to writings that are both for and against it. Anyone who states he only supplied within the nonfiction section, refs for antiGW is simply making things up.

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 23 by crashfrog, posted 09-14-2005 7:43 AM crashfrog has replied

Replies to this message:
 Message 35 by crashfrog, posted 09-14-2005 6:35 PM Silent H has replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 26 of 113 (243271)
09-14-2005 9:12 AM
Reply to: Message 24 by Mammuthus
09-14-2005 8:02 AM


I don't know that he challenges scientific methodology. His characters (and his comments in the end of the book) implore people to use the scientific method i.e. he claims that the science has become politics, not that the scientific method is inadequate
Agreed, I meant to say the "state" of scientific method, which he seems to feel has been getting shoved aside for rhetoric. That's why I added "sloppy methodology" to try and get a more accurate meaning to what I wanted to express.
Yeah, I'd say he pretty well defended the scientific method. In fact if I remember right he included a little boost for it somewhere.
But the story itself and the character development was really really lame. Kenner's monologues were entertaining but the rest of the cast had as much substance as extras on the A-Team...
Snif snif. I really like Crichton's writing. But yeah it has formula, and some books are not so hot. I agree that some of the characters here were so paper thin as to be nearly transparent. In fact his actor characters might as well have come from Team America!

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 24 by Mammuthus, posted 09-14-2005 8:02 AM Mammuthus has not replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 27 of 113 (243276)
09-14-2005 9:19 AM


Regrouping...
Okay everyone, taking Crash's advice, let me remove Crichton's book as a source of topic material. It really was supposed to set the stage for the discussion.
That said. Let me say that so far I am disappointed. If I came on asking for evidence that evolution was a good scientific model my guess is I'd have gotten a lot more than one post with unencouraging statements from one science org, and one link to Wiki.
Perhaps to stir the pot, let me be so bold as to suggest this has so far looked much like a creationist position. I have seen many exhortations that it must be and that people do bad things which will destroy us if we don't trust in that paradigm and so alter our behavior, but the actual facts are not quite so forthcoming... and I did lay out some specific points.
In fact one poster has actually invoked the precautionary principle which is essentially a scientific sounding version of Pascal's wager.
Heheheh... okay people come on and hit me with facts.
(meanwhile I'll take a look at wiki for myself)

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

Replies to this message:
 Message 32 by gene90, posted 09-14-2005 2:32 PM Silent H has replied
 Message 36 by crashfrog, posted 09-14-2005 6:43 PM Silent H has replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 29 of 113 (243291)
09-14-2005 10:04 AM
Reply to: Message 28 by jar
09-14-2005 9:33 AM


Holmes, I get the feeling you've moved into one of your strident phases. If so, fine but just tell us so we can ignore you.
No, this is the beginning of miscommunication. Lets try to end that quickly. For the most part I agree with your position...
What does that have to do with anything I said?
I started by saying this is where we are being realistic. Maybe I should have capitalized the WE, so that you understood I was suggesting that you and I agree and was talking about us.
I then went on to say (guess I should have made a paragraph break) Take a look at actual statements by proponents of GW. Thus I was trying to suggest that while we may agree on what concerns there might be regarding the climate, other people who are proponents of GW have other things to say.
The point is that you cannot defend the entire GW movement, using your own position as it is not the entirety of the movement.
The rest flows from that initial misunderstanding. You did not mention venus, but that was an initial model for GW theory by its proponents. You did not say people were bad, but some environmentalists on the GW bandwagon do. I am curious how you made that last error when I specifically mentioned environmental circles.
Let's work to minimize the harmful effects.
I agree. The point is which harmful effects? I'd rather throw effort into solving actual problems than any problem someone comes up with.
Bush created a similar argument for the invasion of Iraq with the suggestion that if we wait for evidence it might come in the form of a mushroom cloud. That attitude toward problems and problem solving was shown to be errant.
Okay there is a possibility that industrial emissions can cause climatic effects. Fine. So lets find ought what they could be. Is there good evidence for change related to that already, models for future impact, and ways to deal with those effects?
I don't see my request as being hyperbolic or extreme in nature.
Again, I have the feeling that you just plain missed the point. If ice covers where you are it's an Ice Age.
The idea that ice = ice age is patently absurd. Ice will almost always exist someplace. Does that mean we are always in an ice age? Or are you saying that Ice Ages are always relative concepts specific to each location on earth?
From my own education, Ice Ages were more than the fact that ice covered singular areas. Here is an entry on Ice Ages at Wiki. Here is an excerpt...
An ice age is a period of long-term downturn in the temperature of Earth's climate, resulting in an expansion of the continental ice sheets, polar ice sheets and mountain glaciers ("glaciation"). Glaciologically, ice age is often used to mean a period of ice sheets in the northern and southern hemispheres; by this definition we are still in an ice age (because the Greenland and Antarctic ice sheets still exist). More colloquially, when speaking of the last few million years, ice age is used to refer to colder periods with extensive ice sheets over the North American and European continents: in this sense, the last ice age ended about 10,000 years ago. This article will use the term ice age in the former, glaciological, sense; and use the term 'glacial periods' for colder periods during ice ages and 'interglacial' for the warmer periods.
I spot three different defs for ice age and none of them would be consistent with any model of GW I have ever seen, nor how you appear to have just used the term. If I am wrong, please let me know why.
You let me know when you hit your strident phase. The fact that you used "us" and "we" earlier makes me wonder. Hopefully clearing up the miscommunication helped.
This message has been edited by holmes, 09-14-2005 10:07 AM

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 28 by jar, posted 09-14-2005 9:33 AM jar has not replied

Replies to this message:
 Message 31 by gene90, posted 09-14-2005 1:57 PM Silent H has replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 37 of 113 (243731)
09-15-2005 8:18 AM
Reply to: Message 31 by gene90
09-14-2005 1:57 PM


I wouldn't say that it's "absurd". Pretty much the only time you have a polar continent that's covered in an icecap is during an Ice Age, or in our case, an interglacial.
That's not what Jar said, so I'm not sure why you are saying my comment is incorrect. He said that simply if you have ice where you are it is an Ice Age. That to me is absurd terminology.
I provided a link to a discussion on the term Ice Age. It discussed three different uses, including a common generalized one, and Jar's was not compatible with it. And in keeping with why it was brought up in the first place, essentially contrary to GW.

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 31 by gene90, posted 09-14-2005 1:57 PM gene90 has replied

Replies to this message:
 Message 39 by gene90, posted 09-15-2005 10:05 AM Silent H has replied

  
Silent H
Member (Idle past 5849 days)
Posts: 7405
From: satellite of love
Joined: 12-11-2002


Message 40 of 113 (243776)
09-15-2005 10:09 AM
Reply to: Message 35 by crashfrog
09-14-2005 6:35 PM


And yet, from the Wiki article alone I'm looking at composites of some 10-20 different climatological models that make it pretty clear that the warming trend is already way beyond the recent annual variation.
Its hard to say way beyond, but it is increasing higher that in some recent estimates. This is where understanding the data means something to put it all into context. Here are a list of graphs on climate that they presented: 1k temp, and Here is their graph on 2K temp comparisons , and 12k temps, 450k temps, 5mil temps, and 65mil temps.
As you broaden the range some important points regarding GW should start coming up. The first is that while temps are going up, and perhaps they are going up quickly, they do not necessarily seem as out of place in a geologic context. If we start from a neutral position of not knowing what is going on and where we are headed, that context becomes important. Second is that its relative normalcy in a historical context raises the question of why it is of concern.
As I mentioned before, in the seventies there was a worry that we were entering a new Ice Age and that was due to to a recent downward trend of temps. Here's the Wiki link to that fad. You will note that throughout their discussion they point to the fact that it was what they generally did not know about the environment and its mechanisms which made them jump to conclusions.
Going through the GW data, you should start looking for spots where it is admitted that data is scarce. The NOAA link on global warming (their present position) which cplmini provided is laced with the same sort of caveats.
While it is true that we now have a better understanding than before, it does not suggest that we have moved to that much better a position.
So I'd say your paleoclimatologists are wrong
I said mine were from years ago and I could be behind the times at this point (well catching up rapidly now). The Wiki article itself keeps mentioning the small amount of climatologists who are not in agreement with GW as it is commonly portrayed, but that 1) does not make it true (I was unaware of any statistical analysis for how many did or did not agree with GW), and 2) does not lend credibility to GW nor discredit those raising questions.
Right now there ARE valid questions out there which have not been answered. I set out the main ones. Cpl supplied NOAAs response to those very questions (kudos for them understanding those are the questions that need verification), but their answers were not definitive. That should suggest something.
I might note that they even provide contrary assessments to global changes in environment, like what Jazz suggested based on what he had seen regionally.
I guess I don't understand your question. You're asking for the mechanism whereby greenhouse gases cause atmosphereic warming?
Inherent chemical properties don't mean a lot once you start talking about atmospheres. Our atmosphere is rather large and multilayered. It is definitely true that increased CO2 in general can result in warmer temps, but this is not a general thing. It enters the atmosphere and goes where? Where is the heat trapped and how does it get distributed within that area? What mechanisms exist that could ounteract and reverse accumulation (or conversely to increase its accumulation)?
You will note that from recent temp graphs that they actually dipped for a few decades when they should (according to GW theory) have been climbing drastically. The idea now is that aerosols provided a mechanism which reversed CO2 effects. In the far past there are sudden surges of CO2 (perhaps even faster than today) from oceanic "burps", which are a bit similar to what GW theorists surmise may happen as Siberia warms up. Yet these great releases diminished and so did the temps of the past... through purely natural mechanisms.
I prefer to use "climate change" to refer to anomolous changes in the heat level and other factors of the atmosphere, and "anthropogenic climate change" to refer to those changes that are caused by human activity.
Agreed that this is a start in the right direction. But this then shifts back to my original questions regarding global climate change and manmade effects. I would also raise the question if Climate Change must be viewed with a sense of fear or more of a pragmatic view of what that means. Is it a neutral term, or one for environmentalist groups to use as a flag?
And I believe that I successfully made the case that the onset of a cooling trend is one eventual change that we might reasonably expect to see, given one model of the forces that affect the atmosphere and climate.
Small regional cooling is completely different than the possible onset of an Ice Age. I already supplied a link on ice ages to Jar. I might also note that I saw nothing (particularly on the NOAA site) which suggested that GW should create enough cooling to create an Ice Age.
I started with the Wiki article on his novel, which led me to a blog written by atmospheric scientists, for instance. It was from that article that I originally quoted.
I'll check that out.
As I said I haven't read the book so naturally, I haven't read his footnotes either.
I wasn't blaming you for that. I was raising a point. If these critics said he did not provide contrary evidence, when in fact he certainly did, doesn't that call into question their honesty, and their criticisms?

holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)

This message is a reply to:
 Message 35 by crashfrog, posted 09-14-2005 6:35 PM crashfrog has not replied

Replies to this message:
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