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Global warming is irreversible without massive geoengineering according to IPCC

RATE THIS! +32
Posted in Science on 26th Sep, 2013 12:05 AM by AlexMuller

Global warming is irreversible without massive geoengineering of the atmosphere's chemistry. This stark warning comes from the draft summary of the latest climate assessment by the Intergovernmental Panel on Climate Change.

 
Even if all the world ran on carbon-free energy and deforestation ceased, the only way of lowering temperatures would be to devise a scheme for sucking hundreds of billions of tonnes of carbon dioxide out of the atmosphere.
 
Since the last assessment, published in 2007Speaker, the IPCC has almost doubled its estimate of the maximum sea-level rise likely in the coming century to about 1 metre. They also conclude that it is now "virtually certain" that sea levels will continue to rise for many centuries, even if warming ceases, due to the delayed effects of thermal expansion of warming oceans and melting ice sheets.
 
The draft report says the available evidence now suggests that above a certain threshold of warming, the Greenland ice sheet will almost disappear within approximately 1000 years, which will result in 7 metres of global sea-level rise. It estimates that the threshold may lie between 1 °C and 4 °C of warming, but is not confident of this figure.
 
Carbon dioxide removal projects seek to remove greenhouse gases from the atmosphere. Proposed methods include those that directly remove such gases from the atmosphere, as well as indirect methods that seek to use natural processes(e.g. tree planting). Many projects overlap with carbon capture and storage and carbon sequestration projects. 


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Comments

Author: Guest
Posted: 2013-09-26
+4
So its a done deal, we are going to destroy the planet? Reply
Author: Guest
Posted: 2013-09-26
+2
This research shows that the available evidence now suggests that above a certain threshold of warming Reply
Author: Guest
Posted: 2013-09-26
+2
The scientists are saying that it is virtually certain that sea levels will continue to rise for many centuries, even if warming ceases. If this is so then why are we so worried about trying to do something about it. Reply
Author: Guest
Posted: 2013-09-26
+2
The carbon dioxide removal projects seek to remove greenhouse gases from the atmosphere, but they are saying that this will still not help, so what are we supposed to do just bend over and kiss it goodbye?
1 Replies
Author: Guest
Posted: 2013-09-26
+1
Yep! Sorta, kinda, maybe, if you are still fond of it and so on. The handwriting is on the wall and is written in stone, we are all gonna die! So there! Reply
Reply
Author: Guest
Posted: 2013-09-26
+2
IF Fixing soot and particulates is about ten times cheaper than fixing carbon dioxide and would work faster, this does seem like a better option to me, but then who am I. I am certainly not a scientist or a researcher. Reply


 

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