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al bundy

Joined: Jun 26, 2004 Posts: 938
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Posted: Tue Aug 22, 2006 10:16 am Post subject: half truths |
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Werebo

Joined: Aug 09, 2003 Posts: 4078
Location: SE London, UK...
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Posted: Tue Aug 22, 2006 12:01 pm Post subject: Re: half truths [Login to view extended thread Info.] |
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| Using maps from the 19th century and current satellite observations, the scientists were able to conclude that "70 percent of the glaciers have been shrinking regularly since the end of the 1880s at a rate of around eight meters per year," Yde said. |
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| "A three-to-four degree increase of the temperature on Greenland from 1920 to 1930, and the increase recorded since 1995 has sped up the ice melt," he said. |
Quote 1 - Just about the time of the 'Industrial Revolution' getting into full swing....
Quote 2 - Just about the time of the masive industrial rebuilding after WW1....
OK, it doesn't prove it's mankind's fault, but it doesn't disprove Mankind's involvement either .... |
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silmaril8n

Joined: Jan 29, 2004 Posts: 1743
Location: Phoenix, AZ
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Posted: Tue Aug 22, 2006 12:08 pm Post subject: Re: half truths [Login to view extended thread Info.] |
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| WereBo wrote: |
OK, it doesn't prove it's mankind's fault, but it doesn't disprove Mankind's involvement either .... |
I think that is kind of the crux of the whole debate isn't it? Nobody can prove that we are the sole or largest cause, but then again we can't really say that we certainly aren't either. I say we may as well just make the smallest footprint then just in case. How does the saying go, "Leave only footprints, take only pictures."?
Last edited by silmaril8n on Tue Aug 22, 2006 2:27 pm; edited 1 time in total |
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Werebo

Joined: Aug 09, 2003 Posts: 4078
Location: SE London, UK...
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Posted: Tue Aug 22, 2006 12:22 pm Post subject: Re: half truths [Login to view extended thread Info.] |
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| silmaril8n wrote: |
I think that is kind of the crux of the whole debate isn't it? Nobody can prove that we are the sole or largest cause, but then again we can't really say that certainly aren't either. I'd say we may as well just make the smallest footprint then just in case. How does the saying go, "Leave only footprints, take only pictures."? |
Very true all round, Sil ... Leaving the 'smallest footprint' makes good sense, especially when it saves money too .... |
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patio

Joined: Feb 03, 2004 Posts: 5598
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Posted: Tue Aug 22, 2006 4:34 pm Post subject: Re: half truths [Login to view extended thread Info.] |
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How the heck can an 18th Century map accurately project the size of glaciers ? ? ?
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Werebo

Joined: Aug 09, 2003 Posts: 4078
Location: SE London, UK...
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Posted: Tue Aug 22, 2006 4:56 pm Post subject: Re: half truths [Login to view extended thread Info.] |
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| 1 example that leaps to mind is that it would show the size of the glacial field then, compare it to now and measure the difference... |
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xavierx

Joined: Nov 06, 2004 Posts: 5427
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Posted: Tue Aug 22, 2006 6:02 pm Post subject: Re: half truths [Login to view extended thread Info.] |
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| I'm betting the key word in patio's comment is "accurately". |
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Werebo

Joined: Aug 09, 2003 Posts: 4078
Location: SE London, UK...
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Posted: Tue Aug 22, 2006 6:55 pm Post subject: Re: half truths [Login to view extended thread Info.] |
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It was about the 18th century that map-making/cartography developed any true accuracy regarding land features etc.
Source.... |
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User: inactive Posts:
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Posted: Wed Aug 23, 2006 1:52 pm Post subject: Re: half truths [Login to view extended thread Info.] |
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On that topic, a recent TV program showed a clacier somewhere on the North American continent that has receded considerably (hundreds of feet) over just the past few dacades. Men are still alive that remember where the edge of it was just fifty or so years ago. Seeing is believing.
Our envelope of air surrounding our planet is just like the air in any other closed environment. Add heat and it will heat up. If that were NOT true, then we'd never get our homes warm in the winter.
Some of the heat we generate radiates off into space, but much of it does NOT but is caught by impurities in our own atmosphere. This atmosphereic heating is much worse in the industrial belt around the northern hemisphere.
Any sixth grade science student knows that. It doesn't require a college prof to GET IT.
Here in FL. we have no heavy industry and therefor NO industrial haze. As soon as the sun sets below the trees our temps start coming down, even on the hottest summer day. Recently our nighttime temps are down in the low 70's. I remember nights in Iowa and Illinois when the night temps were still in the upper 80's or low 90's.
One guy I went flying with one day in Illinois, pointed out the haze that hid the horizon. He told me he hadn't been able to see the horizon if over 20 years. (Industrial haze.) And, that was at least 20 years ago.
When this closed environment we call Earth cannot radiate its man made heat into space, because of air polution, it's going to get warmer. It's the most simple physics, not Rocket Science or black magic.
After we kill ourselves off, the Earth will heal itself.
Y'all have a nice (warm) day now, Y'hear?
Shadow  |
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donrc

Joined: Feb 16, 2003 Posts: 882
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Posted: Thu Aug 24, 2006 3:34 pm Post subject: Re: half truths [Login to view extended thread Info.] |
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sil,
The only problem is that there is a price tag on that small footprint. Last estimate I saw (Bjorn Lomborg, The Skeptical Environmentalist) was 5 trillion dollars.
There are still several million people in the world who are starving. Under those circumstances it becomes a matter of the efficient use of scarce resources. I don't think that the warming of 0.4 to 0.8 degrees centigrade since 1865 qualifies as efficient use under those circumstances.
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patio

Joined: Feb 03, 2004 Posts: 5598
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Posted: Sat Aug 26, 2006 1:08 pm Post subject: Re: half truths [Login to view extended thread Info.] |
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| patio wrote: |
How the heck can an 18th Century map accurately project the size of glaciers ? ? ?
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I still don't believe my question was answered...
patio.  |
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Gary66

Joined: Sep 01, 2005 Posts: 8353
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Posted: Sat Aug 26, 2006 1:12 pm Post subject: Re: half truths [Login to view extended thread Info.] |
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| patio wrote: |
| patio wrote: |
How the heck can an 18th Century map accurately project the size of glaciers ? ? ?
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I still don't believe my question was answered...
patio.  |
Well I would venture to guess that in the 18th century the technology was not available to obtain an accurate measurement of any glacier. |
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al bundy

Joined: Jun 26, 2004 Posts: 938
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Gary66

Joined: Sep 01, 2005 Posts: 8353
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donrc

Joined: Feb 16, 2003 Posts: 882
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Posted: Sat Aug 26, 2006 3:07 pm Post subject: Re: half truths [Login to view extended thread Info.] |
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gary,
Doesn't that repeal the first law of thermodynamics?
drc |
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