Global Warming is Man made, True or False?

[rkjunior303]

Why are we having record lows in several areas if there is Global Warming? And why were we saying we were on the brink of an Ice Age in the 70s?

Global warming heats up the earth. This warm earth melts the polar ice caps. melting ice caps cool down the ocean and changes the weather patterns.

[warbeak2099]

The hole that humans have caused is so small it doesn't make a difference. The hole that the natural course of the earth has caused however... scientists have found that this leaves a much more profound effect. Yes some global warming is man made. But it is less than 5% of the total warming effect that is taking place on the earth. To say that we could stop global warming all together is idiocy. We'd only be reducing it by 5%. It would still take place without humans. Get it through your heads and stop being hearded by the media like little sheep.

[BigEvil]

Scientists have been proving that global warming is a reality. However, there is no significant data showing that it is man-made. There is significant data that shows the warming of the earth has been natural, and that human influence is minimal if not irrelevant. The global warming crisis that the media and politicians have created is a sham and people who buy into it are ignorant sheep. Probably the same people who believed the bird flu would be an epidemic. Be smart and listen to the scientists, not the greasy politicians and the crooked media.

Well said.

I am all for studying the issue, but the problem is that it has become a 'political issue' also. I do not and never will believe any politician. Period. There interests take priority over ours.

I also am troubled by how the anti-global warming groups of scientists are being silenced. Reminds me too much of "The world is flat heretic!" mindset.

[Soopa Villain17]

i belive its just a cycle.

[geekwarrior]

"The puzzle: In the lower stratosphere (between 10 and 18 km) ozone has recovered even better than changes in CFCs alone would predict. Something else must be affecting the trend at these lower altitudes.

The "something else" could be atmospheric wind patterns. "Winds carry ozone from the equator where it is made to higher latitudes where it is destroyed. Changing wind patterns affect the balance of ozone and could be boosting the recovery below 18 km," says Newchurch. This explanation seems to offer the best fit to the computer model of Yang et al. The jury is still out, however; other sources of natural or manmade variability may yet prove to be the cause of the lower-stratosphere's bonus ozone.

Whatever the explanation, if the trend continues, the global ozone layer should be restored to 1980 levels sometime between 2030 and 2070. By then even the Antarctic ozone hole might close--for good. "


taken from my link above

[Raven001]

I for one do believe that humans are responsible for the accelerated rise in global temps. Having been around for a bit longer than half a century, I can testify that temps have been rising and noticiibly so in recent years. Yes it's true that there are cycles but one can't dismiss the impact that humans are having on the ecosystem. The destruction of forested areas for agricultural use, the rise in use of fossil fuels for transportation and such, rapid rise in ubanization it all adds up to an attack on the earths ability to maintain us. Whether wacko liberals or wacko conservatives are right won't mean squat when the population bomb and higher temps srew up the earths ability to feed us.....

[robnix]

There is a HOLE in the ozone layer. Not a little one that's shrinking but a BIG one that's expanding:

The size of the antarctic ozone hole peaked about two years ago now and has slowly been shrinking since then. Since it takes about 30 years for the CFC's to be eliminated from the atmosphere you'll see bigger gains starting in the mid 2010's, with recovery predicted around the mod 2050's. What's kind of ironic is that as surface temperatures rise, stratosphere temperatures will drop, which may aid recovery.

[geekwarrior]

I for one do believe that humans are responsible for the accelerated rise in global temps. Having been around for a bit longer than half a century, I can testify that temps have been rising and noticiibly so in recent years. Yes it's true that there are cycles but one can't dismiss the impact that humans are having on the ecosystem. The destruction of forested areas for agricultural use, the rise in use of fossil fuels for transportation and such, rapid rise in ubanization it all adds up to an attack on the earths ability to maintain us. Whether wacko liberals or wacko conservatives are right won't mean squat when the population bomb and higher temps srew up the earths ability to feed us.....

I personally am more worried about the water supply.

[rkjunior303]

not to mention, as little as it sounds, a global temperature rise of more than a few degrees is catastrophic to water, crops, etc.

[bleachit]

and I mean to make it clear: THERE WAS NO HOLE IN THE OZONE. Put all theories and disputes of truth behind. Embrace what is right before you.

so, you have conclusive evidence proving that before fossil fuels were used, there was no hole in the ozone layer? I would love to see the pictures of the earth's atmosphere you have from before the time of fossil fuel use.

[Altimas]

Global warming heats up the earth. This warm earth melts the polar ice caps. melting ice caps cool down the ocean and changes the weather patterns.

Which cools the earth down and then ice caps expand... your just showing that the Earth has its own set of checks and balances.

I think we should reduce emissions for air quality but i dont think it effects the temperatures to a cataclysmic level or even has the chance of that.

http://brneurosci.org/co2.html - Information that shows that CO2 is only causing about 4.2-8.4% of the total greenhouse gas effect. Of these greenhouse gases, water is by far the most important. Although estimates of the contribution from water vapor vary widely, most sources place it between 90 and 95% of the warming effect, or about 30-31 of the 33 degrees.

So shouldn't we worry more about Water Vapor?

[warbeak2099]

so, you have conclusive evidence proving that before fossil fuels were used, there was no hole in the ozone layer? I would love to see the pictures of the earth's atmosphere you have from before the time of fossil fuel use.

Here here! Global warming will happen with or without humans.

[SCpoloRicker]

Global Warming is a LIEbural conspiracy.

[ntn4502]

I would like to think I know more on the subject then the average Joe due in part to my major's dealings with it (we even have a polar research center that receives ice cores from 12 sites around the world). What we discover through our data analysis is that of course we in no way started global warming, were still coming out of a freaking ice age from 18,000 years ago. Yet, since the advent of Industrial Revolutions, it is now becoming clear that greenhouse gas emissions are effecting the natural process by speeding it up. At our present level we are matching and all time level for CO2 in the atmosphere for the past ~1,000,000 years aka as far back as ice cores go(roughly meaning the end of a greenhouse period and the start of an icehouse period in geologic terms).

[Ole Unka Phil]

I would like to think I know more on the subject then the average Joe due in part to my major's dealings with it (we even have a polar research center that receives ice cores from 12 sites around the world). What we discover through our data analysis is that of course we in no way started global warming, were still coming out of a freaking ice age from 18,000 years ago. Yet, since the advent of Industrial Revolutions, it is now becoming clear that greenhouse gas emissions are effecting the natural process by speeding it up. At our present level we are matching and all time level for CO2 in the atmosphere for the past ~1,000,000 years aka as far back as ice cores go(roughly meaning the end of a greenhouse period and the start of an icehouse period in geologic terms).

Good synopsis. I agree.

The Earth has gone through several "Global Warmings" and we do not exactly understand the cause of those previous ones. We do know that they reduced Ice Caps and raised Ocean levels to three times their initial level. We do know that any subsequent Ice Ages did not result in those Ice caps being replaced.

Where those previous Global Warmings the result of some organism that flourished during that time producing excess CO2? Possibly.

Then when the temperature got too high did that organism (or group of organisms) crash and a new Ice age form? Probably... or possibly.

Are we, Man, just the latest Organism to influence this? Probably.

Do we cause there alone as man made? No...

Do we agravate or speed one up once it starts that cycle? Probably.

Can we do anything about it? Probably not.... but we might can slow at least the parts of it that we influence. The rest is meant to be. The Good thing about some of the things we would be working to do would result in other benefits. So, nothing we are proposing to do have a down side overall. The world will change over time. That we already know. And the world will end some point in the far distant future measured on our time frame. In the mean time it will evolve and do its thing.