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RE: Model of Global Warming - 8/12/2007 12:07:22 AM   
Real0ne


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if you look at the measures data they are claiming a temperature change that is nearly the same as their variance in measurements if i remember right LOL

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RE: Model of Global Warming - 8/12/2007 12:15:02 AM   
shallowdeep


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Not really something I've used, but you might look into NASA's stuff:
http://www.giss.nasa.gov/tools/
The source code is available... but it's in Fortran, and supposedly doesn't use a uniform coding style. =)

EdGCM provides a GUI front-end and appears to include some preset simulations that might be useful for playing around with how parameters affect global warming models. Hope you find what you're looking for.

(in reply to CuriousLord)
Profile   Post #: 42
RE: Model of Global Warming - 8/12/2007 2:29:32 AM   
seeksfemslave


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quote:

ORIGINAL: SuzanneKneeling
quote:

ORIGINAL: seeksfemslave
A super computor just produces doubtful speculative unproveable results quicker than...well a computor thats not super !Simple really !

Uh, no. Actually a super computer allows for spatial and temporal resolutions that are increased by orders of magnitude over what you might be able to render on a single processor PC. That's why all these fancy scientists use them, see, and how they get all these peer-reviewed results that all show that we are cooking our nest faster than you can say "fill 'er up".

Well I do have a little knowledge. emphasise the little, of the old UK System X telephone exchange which had four interlocked processors.
Spatial and temporal resolutions Eh what lol !!!?? sounds like waffle to me.
The four processors did handle call connections/billing  and manage the network pretty damn quick !

No one doubts what super computer models are saying about climate trends, what is in doubt is whether what is being said is accurate.
I rather doubt it, tho' I definately dont know.

As an example it is known that predictions of future economic performance output by super computors simply do not produce accurate results..

(in reply to SuzanneKneeling)
Profile   Post #: 43
RE: Model of Global Warming - 8/20/2007 7:02:15 PM   
pollux


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quote:

ORIGINAL: pollux

quote:

ORIGINAL: SuzanneKneeling

I actually did skim through and read some of the comments, trying to reverse-engineer what your urgent breaking story was, Pollux. It wasn't much help unfortunately. Forgive me though if I don't get exercised about some uncredentialled blogger saying he's pulled the curtain out from in front of the Great Climatology Oz. There are literally hundreds of them on the web, and they are nearly all either making mountains out of molehills or flat-out misrepresenting the science. That's why we have a little thing called "peer review". If you want to read something worthwhile on the subject, go to your public library and thumb throuhg some issues of Nature, Science or even Scientific American (the latter not peer-reviewed but pretty faithful to the current mainstream).

I did click on some links someone supplied there to some strings of temperature offset (atmosphere vs ground) data. I don't know what his point was, whether he was defending or rebuting the blogger, or what the data was supposed to say. Remember that when you are shown a column of numbers out of the blue, without a context, generally it is a poor bet to try to discern much from it. You don't know where it's from, what needed corrections have or haven't been applied yet, or even if it's just one set of data among a larger sample. It is meaningless to try to make something of a blog post like that. Again, read real scientific publications if you desire real information.


When McIntyre's website comes back online I'll be sure & bump the thread


Bump for Suzanne.

McIntyre's blog is back up, here:
http://www.climateaudit.org

McIntyre's initial blog post noting the problem with surface station data commencing on 1/1/2000:
http://www.climateaudit.org/?p=1854

McIntyre documents his exchange with Reto Ruedy here:
http://www.climateaudit.org/?p=1868

And a recent editorial in the Boston Herald on the matter is here:
http://news.bostonherald.com/editorial/view.bg?articleid=1017895&format=text


quote:

The latest wrinkle in the global-warming controversy finds the National Aeronautics and Space Administration quietly correcting its historical data to compensate for an earlier error, a correction that should deflate some of the recent panic-mongering about an apparently warming Earth.

   The correction reduced the average temperatures for 2000-2006 in the continental United States by about 0.27 degrees Fahrenheit (with many stations showing lower readings and many showing readings much above average). That dethroned 1998 as the hottest year on record, a distinction in the NASA data set that now belongs to 1934 (by an insignificant margin over 1998). Several other recent hot years were moved down in the rankings, and the 1930s now account for four of the top 10.

   The number changes don’t greatly affect worldwide averages - but they reveal a disturbing arrogance among scientists in the community of global-warming true believers.

   The data-handling error - the assumption that one set of numbers was identical to another when it was not - was discovered by Canadian researcher Steve McIntyre, who notified NASA on Aug. 4. NASA almost immediately corrected its Web site, but without any notice of the changes. You can bet that if the correction had shifted the data the other way, there would have been press releases, news conferences and lugubrious music on the TV news. As it was, it was left to the conservative blogosphere to spread the word; the mainstream media ignored the episode.

   That’s not the worst of it. NASA refused to release to McIntyre the computer codes it used to make the correction, though a huge amount of the agency’s other climate codes are online. McIntyre believes there are “real and interesting statistical issues” involved in the records of the observing stations on which NASA relies, issues of whether the proper corrections have been made for the well-known “heat island” effects of urban areas. Most warming believers take it on faith that they have; McIntyre says he knows of too many instances where a thermometer has been placed closer than 100 feet to a paved surface.

   Science is not supposed to work by secrecy. Stonewalling by NASA will only increase the number and fervor of the skeptics.


Emphasis mine.

(in reply to pollux)
Profile   Post #: 44
RE: Model of Global Warming - 8/20/2007 7:15:44 PM   
Real0ne


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something just occured to me.  remember in the old bible?  the great flood?  Think maybe this is nothing new?

_____________________________

"We the Borg" of the us imperialists....resistance is futile

Democracy; The 'People' voted on 'which' amendment?

Yesterdays tinfoil is today's reality!

"No man's life, liberty, or property is safe while the legislature is in session

(in reply to CuriousLord)
Profile   Post #: 45
RE: Model of Global Warming - 8/20/2007 9:13:07 PM   
ChainsandFreedom


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seeksfemslave

old thread, but just read it, sorry.
I just wanted to say I think its weird for you to assert that you don't trust computer modeling systems but you wont trust climate change advocacy without the computer models. Also, there is plenty of data for human and/or unbenificial climate change which is independant of predictive models.

It isnt that computers cant compute that make the economic models you don't trust are unrealible for a number of human and natural factors not present in climate model systems. The effects of human-driven marketing campagins upon national economies or politics are hard to calculate and model. The agricultural output of states and the supply of consumer goods is subject to the weather, and so a huge part of a national economy cannot be predicted accurately because production is never an absolute certainly.

Climate modeling is hard to do because the science of weather is quite new and our records do not go back far enough. We don't even understand a vastly complicated system which we have little historical data on. That being said, conventional knowledge maintains that all models, although differing on details and scope, tend to agree that the tempurature will rise and weather will become more eradic. Many of the early models are bearing out in fact right now.

Even if you don't want to trust policy on models, we have ice core samples, air sampling, salinity levels, desertification levels, glacier recession rates, and all manner of concrete, non physical data which not only says climate change is happening but when combined can reveil much of the reasons why.
While your right about economic modeling using computers, your mistaken to compare this with climate modeling.

ignoring the differance between human-influenced and determined data and natural data. Your also ignoring the evidence which doesnt require a future-projected model.

(in reply to seeksfemslave)
Profile   Post #: 46
RE: Model of Global Warming - 8/21/2007 1:11:10 AM   
seeksfemslave


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quote:

speaking of climate modelling
CandF said
We don't even understand a vastly complicated system which we have little historical data on.

Doesn't that point shoot down those who are certain about future climate trends based on predictions from computor models ?

I thought that core samples showed that global warming has been a regular occurance at times when it certainly could not have been caused by human activity. NO?

I cant see how anything humans do is going to affect those winds that sit as standing waves, I think in the troposphere.
Energy required is about equivalent to deflecting a hurricane. Something huge anyway.
Those winds have a major effect on weather and as I understand it cause the dry belt that crosses Central Africa.

< Message edited by seeksfemslave -- 8/21/2007 1:18:30 AM >

(in reply to ChainsandFreedom)
Profile   Post #: 47
RE: Model of Global Warming - 8/21/2007 1:57:17 PM   
ChainsandFreedom


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my post was even harder to read than usual. I'm fighting what seems to be a major cold. thanks for overlooking my many mistakes.

Your right, we can't change what goes on in the troposphere. The Navajo, Babalonyian, and Egyptian civilizations all crumbled because of it.

However there are billions of humans on earth because we're a species sucessful at adapting to our enviroment. So even if current climate change wasn't entirely human created, which I agree with you about, why would we want to just sit back and watch our enviroment slip away from our grasp?

We know that the way we treat our ecosytems and climate impact our enviroment greatly. When I lived in Binghamton NY for a few years to go to school, for instance, there was a one-mile zone around a coal plant where asthma rates in children were 100% more than the national average. Remember, the dustbowl was caused by poor agricultural practices. Pollution control in LA means less 'smog days' and more days kids can go outside and practice sports after school than they could ten years ago.

My point is that the things we can't change about envirmental deterioration only make those we can affect far more pressing. And there are far too many examples of people positively affecting our enviroment to dismiss them all as liberals massaging facts. We know that carbon dioxide in the air is bad for us by matching carbon levels with climate levels, and we know through things like ice cores that theres far more pollutaints in our atmosphere than there ought to be.

So even if you dont think human-caused activity is affecting the climate changes we're experiencing, why argue against trying to maintain a suitable ecosystem? Move somewhere with uncapped pollution like Bejing, and refuse to eat anything that wasn't grown through irrigation, and you'd probably agree that enviromental planning is more than just politics.

(in reply to seeksfemslave)
Profile   Post #: 48
RE: Model of Global Warming - 8/21/2007 5:09:43 PM   
Rule


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quote:

ORIGINAL: ChainsandFreedom
We know that carbon dioxide in the air is bad for us by matching carbon levels with climate levels

I do not know that at all. It is merely a hypothesis.
 
In fact, rising global temperatures - whatever their unknown cause (you can read my suggestion as to that in an earlier thread) - will cause an increased evaporation of the oceans and hence an increase in rainfall, thus supplying the fresh water many people are thirsting for. It will wet the deserts and make fertile now frozen wastes. 

(in reply to ChainsandFreedom)
Profile   Post #: 49
RE: Model of Global Warming - 9/17/2007 9:22:55 AM   
Sinergy


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quote:

ORIGINAL: Joseff

Can someone point to a good computer model that can tell, with accuracy, what the weather will be like next week?
Joseff


Well, the year before Katrina hit a computer model predicted the precise number and intensity of hurricanes to hit the US southeast the following year.  Of course, when these models were shown to the Bush administration they simply ignored them as being meaningless psuedoscience.

The problem with computer modelling of a complex system is that small variables initially can result in very large changes to the final outcome.  This doesnt necessarily mean they are "wrong," it simply means that one can modify initial parameters and see how the final outcome changes.

Sinergy

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(in reply to Joseff)
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