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#26 2005-10-31 20:08:32

John Creighton
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From: Nova Scotia, Canada
Registered: 2001-09-04
Posts: 2,401
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Re: Space Ring to Stop Global Warming?

Wow that much ice cap shrinkage...

And there is more with the effects of global warming that shows up as a result as a cascading effect on the land, vegetation, animals, weather and human systems as well.

With all the evidence of change, especially in the arctic, it's crazy that we still have people denying global warming.

It's a lie tongue


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#27 2005-11-01 01:15:40

noosfractal
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From: Biosphere 1
Registered: 2005-10-04
Posts: 824
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Re: Space Ring to Stop Global Warming?

With all the evidence of change, especially in the arctic, it's crazy that we still have people denying global warming.

I think an average global temperature rise has been well established.  I believe the dispute is over what is causing it and if/how much it will continue to rise in the future.
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#28 2005-11-01 10:03:57

SpaceNut
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From: New Hampshire
Registered: 2004-07-22
Posts: 29,317

Re: Space Ring to Stop Global Warming?

If one had a complete record of temperature cycles we could see if there is a pattern to them. Some of that record may still exist at the bottom of the oceans in the form of methane ice.

Scientists Gain New Insights Into 'Frozen' Methane Beneath Ocean Floor an ice-like substance hidden beneath the seafloor off Canada's western coast.

Gas hydrate, a mixture of water and mostly methane, is believed to occur under the world's oceans in great abundance, but it quickly "melts" once removed from the high pressure and cold temperatures of its natural environment, making it very challenging to recover and analyze.

"We're interested in gas hydrate because we believe these deposits have played an important role in ancient global climate change,"

Only after some time to analyze the core samples will we either have answers or just more questions.

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#29 2005-11-02 08:27:18

SpaceNut
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From: New Hampshire
Registered: 2004-07-22
Posts: 29,317

Re: Space Ring to Stop Global Warming?

Modeling Of Long-Term Fossil Fuel Consumption Shows 14.5 Degree Hike In Temperature

If humans continue to use fossil fuels in a business as usual manner for the next several centuries, the polar ice caps will be depleted, ocean sea levels will rise by seven meters and median air temperatures will soar

climate-carbon-emissions-changing-surface-temp-projection-2300-bg.jpg

Lawrence Livermore modeled carbon emissions and climate change from pre-industrial levels (1870) through 2300. This animation shows how the present (year 2000) global mean surface temperature change of 0.8°C increases to 7.8°C by 2300. Land areas warm more than the oceans. Arctic and Antarctic regions warm more than the tropics. Note the extreme warming of more than 20°C over the Arctic by 2300.

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#30 2005-11-02 13:00:25

noosfractal
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From: Biosphere 1
Registered: 2005-10-04
Posts: 824
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Re: Space Ring to Stop Global Warming?

It should be noted that this "study" assumes the burning of all possible fossil fuels, is replete with the phrase "but we didn't take into account" and uses words like "holistic."

Their projected vegetation map for high CO2 is interesting - most of the northern hemisphere becomes temperate forest and most of the southern hemisphere becomes tropical forest.

Vegetation400x278.jpg
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#31 2005-11-02 17:08:47

MarsDog
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From: vancouver canada
Registered: 2004-03-24
Posts: 852

Re: Space Ring to Stop Global Warming?

from:
http://mclean.ch/climate/Eye_opening.htm

"The Vostok data shows that carbon dioxide levels usually rose AFTER a increase in temperature, not before. There was no way that any increase carbon dioxide was the cause of a rise in temperature."

Question is what caused the temperature rise, and the CO2 increase ?

Recently, industrial age CO2 contributed some, but temperature is several degrees below 32,000 years ago.

Vostok_CO2_1.gif

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#32 2005-11-02 18:06:38

noosfractal
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From: Biosphere 1
Registered: 2005-10-04
Posts: 824
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Re: Space Ring to Stop Global Warming?

Question is what caused the temperature rise, and the CO2 increase ?

A 1991 Science article titled "solar activity closely associated with climate" showed that, unsurprisingly, solar activity is well correlated with global average temperature ...

lassenA.jpg

http://www.tmgnow.com/repository/solar/lassen1.html

The big effect of the increased solar activity is in changing cloud cover.  This is important because water vapor is 10000 times more effective as a greenhouse gas than CO2.  Note that clouds are left out of most climate models because they are "too difficult." 

http://www-ssc.igpp.ucla.edu/IASTP/43/

An increase of just 0.2% in the solar output could have the same affect as doubling the carbon dioxide in the Earth's atmosphere.

http://solar-center.stanford.edu/sun-on … -warm.html

Hmmm, when was the last time you read that in a newspaper?
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#33 2005-11-03 06:44:46

MarsDog
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From: vancouver canada
Registered: 2004-03-24
Posts: 852

Re: Space Ring to Stop Global Warming?

more graphs:
http://www.oism.org/pproject/s33p36.htm

Ice age here we come, in another 15.000 years ?
Will the extra CO2 an CH4 save us for long ?

http://www.aip.org/tip/INPHFA/vol-10/iss-3/p10.html
"Although solar radiation started to decline 10,000 years ago, CO2 in the atmosphere began to rise 8,000 years ago and methane started to rise 5,000 years ago, rather than falling as expected."

Vostok-ice-core-petit.png

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#34 2005-11-04 11:21:16

SpaceNut
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From: New Hampshire
Registered: 2004-07-22
Posts: 29,317

Re: Space Ring to Stop Global Warming?

Should we let alone can we control global warming effects since it would appear that a component of it is not man made or of his doings.

Model Helps Assess Ocean-Injection Strategy For Combating Greenhouse Effect

In searching for ways to counteract the greenhouse effect, some scientists have proposed capturing the culprit—carbon dioxide—as it is emitted from power plants, then liquefying the gas and injecting it into the ocean. But there are pitfalls in that plan.

Not sure that I would like the effects locally if the CO2 does escape from its burial locations.

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#35 2005-11-05 00:20:10

MarsDog
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From: vancouver canada
Registered: 2004-03-24
Posts: 852

Re: Space Ring to Stop Global Warming?

In the ice core records, there is a steep drop 12,000 years after the peak. Then a rebound.
We are around 10.000 years after the peak.
Looks like things are cancelling out, but for how long ?
Long enough to miss the drop and bridge over to the rebound ?
There is a period of stability around current temperatures.
Past few glacial cycles, there was just a sharp peak.

If things get too cold, perhaps Methane belching could be induced ?
http://news.bbc.co.uk/2/low/science/nature/3775181.stm
Or super greenhouse gasses ?
http://www.rsc.org/chemistryworld/Issue … usegas.asp

So far so good, neither Ice Age nor Antartica melting.
Which is better: another Ice Age or melting of Antartica ?

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#36 2005-11-21 14:06:44

SpaceNut
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From: New Hampshire
Registered: 2004-07-22
Posts: 29,317

Re: Space Ring to Stop Global Warming?

One could think of the placement of a ring in orbit to slow global warming as an attempt to teraform Earth as it were to our needs. Many Teraforming ideas of mirrors and more have been thought of as an attempt to warm the Martian planet.

A simular thought thou is to allow for more light to enter a once gloomy village in this article. The process of placing heliostats, essentially rotating mirrors, mounted on a hillside to grab sunshine off reflectors from the neighboring village of Kramsach. to create a dozen "hotspots" -- areas not much bigger than a front yard scattered through the town, where people can gather and soak up rays.

[url=http://www.msnbc.msn.com/id/10138983/]Mirrors to banish village's winter darkness
EU to foot half the cost of project set to bright light to Austria's Rattenberg[/url]

It says the reflector technology is now advanced enough to justify the company's first attempt to bring sunshine into a village.

It's costly, however. The European Union is footing half the $2.4 million bill, and the company says it will pay the $600,000 cost of planning the project, gambling that success will attract more business.

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#37 2005-12-21 09:50:21

Grypd
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From: Scotland, Europe
Registered: 2004-06-07
Posts: 1,879

Re: Space Ring to Stop Global Warming?

This is an old thread but when I saw this and its appropiateness just had to resurect.

Longer airline flights to solve global warming

Though an Old article the principle is that since long flights at high altitude leaves contrails that are a recognised source of Global dimming (less sunlight arriving on the surface) if this was to be done over the poles more frequently it would actually decrease tempatures there to the point the planet will cool.


Chan eil mi aig a bheil ùidh ann an gleidheadh an status quo; Tha mi airson cur às e.

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#38 2006-01-01 23:10:01

MarsDog
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From: vancouver canada
Registered: 2004-03-24
Posts: 852

Re: Space Ring to Stop Global Warming?

The researchers claimed that this extra cloudiness could account for a warming trend of half a degree Fahrenheit per decade in the years between 1975 and 1994

While Clinton was jetting around the globe, expressing his opinion on global warming, he was actually part oft he process ?

=====

Methane from cows, CO2 from cars, increased solar activity in addition
Outside solar system events also cause global warming ?

also observed in the Mars atmosphere

http://www.biocab.org/Hydrogen_ICR_Global_Warming.html
.

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#39 2006-11-05 02:09:38

noosfractal
Member
From: Biosphere 1
Registered: 2005-10-04
Posts: 824
Website

Re: Space Ring to Stop Global Warming?

The Stern Report puts the cost of curbing global warming at $450 billion per year for the foreseeable future.

While widely criticized ...

Bjorn Lomborg
The dodgy numbers behind the latest warming scare
http://www.opinionjournal.com/extra/?id=110009182

Nigel Lawson
An Appeal to Reason
http://www.cps.org.uk/cpsfile.asp?id=641
(PDF, 100 kB)

... the fact is that this has become a point of faith with the public at large and will thus likely result in large new taxes.

A (mere) $100 billion / year project has been proposed ...

A Sunshade for Planet Earth
http://sciencenow.sciencemag.org/cgi/co … 006/1031/3

... in case emergency measures are required to counter abrupt climate change.

The space ring (top of this thread) is even cheaper, but with this sort of money up for grabs, why not go for global climate control?  Longer growing seasons, shorter winters, fewer hurricanes.  Not only would global GDP damage be prevented, but it would be enhanced.


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