The effects of Global Warming are irreversible.?

Question

Can you please give me some topics for this debate we are positive. Any other additional info would be appreciated thanks heaps.

Answer 1

global warming is not irreversible.

http://www.youtube.com/watch?v=6U1t7AjhR...

this video explains why and it aint boring:)

Answer 2

If it were irreversible then the MWP wouldn't have given way to the LIA.

I think that's the real reason they need to downplay the MWP - - their case for catastrophic global warming is based upon a "tipping point" after which no matter what we do, it's too late, and the warming to date triggers the release of methane, a much more potent greenhouse gas, which results in a positive feedback effect - 2 degrees F yields 10 degrees F in a few decades.

It's not the 2 degrees F, that they say results from CO2, that by itself would do any material harm - it's the 10 degrees F from the methane.

That didn't happen last time.

Or the time before that.

Or the time before that.

Does that mean it CAN'T happen that way this time?

Of course not.

Anything could happen.    

I have no idea what will happen.

But, neither do they.

Answer 3

everything is reversible perhaps not to the mortal eye b/c the planet reverts to slowly for us humans to comprehend. yes the earth will revert on its own

Answer 4

its not irreversable.

Answer 5

Well the last five temperature peaks over the last 2500 years have all been noticeably hotter than the current one and also longer lasting. The Greek about 2200 years ago lasted about 150 years at its peak temperature and when it crashed it only cooled to about our current average temperature. The Roman lasted from the time of Christ for about 200 years and crashed fully in about the year 250 when it got cold enough to drive the Goths and Vandals out of eastern Germany to take over North Africa and sack Rome itself.

The scandic period was hotter than the Greek or Roman periods and even during its switch to the medieval optimum it stayed well warmer than the earth average year of 2000 at the cold dip between them. This is why during the Viking settlement of Greenland it was possible to grow crops there because the region had been very warm for more than 600 years and did not start cooling until about 1400 when it dipped close to what it was in 1800. But there was a very short spike of extreme heat more than any other temperature recorded in the last 2500 years and considerably higher than our current temperatures. It would be interesting to know what caused this short sudden temperature event centered approximately on the year 1700 and lasting from cold to cold about 150 years which is extremely short a period for such an extreme variation. The rise leading into that warm period was steeper than the current warm period that has lasted now about 150 years. 100 years for the climb to the current temperature which peaked in the mid 1930s and has wavered close to that peak with some ups and downs since then.

What makes me nervous is what caused that sudden temperature peak in 1700 and what caused it to drop to the little ice age temperature in only 50 years. And what brought us out of the little ice age into our present warm period, it sure was not SUVs!

Answer 6

its reverseable.

Answer 7

Ok....the woolly mammoth and sabre-toothed tiger aren't coming back.  That's about it.

Answer 8

I suspect it is self correcting.  First if the average global temperature increases that means the air will contain an increased amount of water vapor.  More water vapor means more clouds, more clouds means less solar radiation reaching the earth's surface, that means lower average temperatures.

You also have to look at temperature stability.  Past history indicates that ice ages typically last around 100,000 years and the warm periods in between about 10,000 years.  It is clear that warm periods are un-sustainable while a cold environment by comparison is 10 times more stable.