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Climate change reversal 'relatively inexpensive'


Posted on Friday, 23 November, 2018 | Comment icon 39 comments

Is geoengineering really a good idea ? Image Credit: CC BY-SA 2.0 Francois Roche
A geoengineering technique known as stratospheric aerosol injection could reverse global warming.
According to a new study, the cost of reversing climate change could be as little as $2 billion per year.

To reach this conclusion, researchers investigated the effectiveness of a theoretical geoengineering method designed to mimic the impact that a volcanic eruption might have on global temperatures.

Back in 1991, Mount Pinatubo in the Philippines erupted, pumping 20 million tons of sulfur dioxide aerosols in to the stratosphere and reducing the temperature of the lower atmosphere by 1 degree Fahrenheit for the better part of two years.

It has since been suggested that artificially reproducing this effect by pumping aerosols in to the stratosphere through a process known as stratospheric aerosol injection (SAI) could theoretically replicate the drop in temperature and effectively reverse the effects of climate change.

According to the new study, it would take a fleet of 100 planes flying 4,000 missions per year to achieve this at a cost of around $2 - $2.5 billion per year for the first 15 years.

The only snag is that a new type of aircraft would have to be developed for this purpose.

Given the controversial nature of geoengineering however, it remains to be seen whether enough countries would actually support this idea for it to ever actually get off the ground.

Source: CBS News | Comments (39)

Tags: Climate Change, Global Warming

Recent comments on this story
Comment icon #30 Posted by Calibeliever on 28 November, 2018, 17:37
Agreed. That's not what I said?
Comment icon #31 Posted by NicoletteS on 30 November, 2018, 14:11
You know Putin has released a statement about this. He believes western governments are poisoning the air on purpose with the chemtrails and this needs to be stopped, because it is causing the global warming. According to what i read.
Comment icon #32 Posted by NicoletteS on 30 November, 2018, 14:21
I hate to break it to you but i have seen enough odd formations and instances with the trails to know something isnt right and i scored 189 on my iq test. Regardless of how people here talk to me it is the same number. Thinking you are smarter than other people for following the crowd and believing what you've been told is normal, but isnt generally superior to using your own eyes.
Comment icon #33 Posted by NicoletteS on 30 November, 2018, 14:24
I do. I dont want anyone to kick off an ice age worrying about a little heat. I hate being cold i moved away from snow for a reason.
Comment icon #34 Posted by NicoletteS on 30 November, 2018, 14:46
Interesting. Never seen a flying unicorn but you know contrails are getting so abundant they are the new clouds. Something really strange happened to me last summer. Phones are getting creepy. So i was visiting my dad in a small secluded town and i saw two approaching jets. They looked like they were going to have a collision so i watched. They didnt. They began streaming a trail and made a big x over the town. As soon as the x was done they stopped spraying, both made sweeping turns and went back in the same direction leaving just a white x. What is going on up there? I live in a larger town ... [More]
Comment icon #35 Posted by seanjo on 30 November, 2018, 15:35
Got a link?   Found it, he has accused the US of spraying chemicals into the air over Syria. I doubt very much they are, and the sources I'm getting are a bit dubious.
Comment icon #36 Posted by seanjo on 30 November, 2018, 15:41
We are due an ice age, from past cycles, do you think we should try to stop the next one?
Comment icon #37 Posted by Silver_Raven on 5 December, 2018, 8:44
While I don't disagree with that, there's historical evidence that it won't work. In the 1800's there were two major volcanic eruptions, Krakatoa and Tambora, both put enough material into the atmosphere to modify the global temperature by a few degrees. The results were the same for both, mass die offs, crops failed, etc. This happened on a global scale, and the temperature change was, at most, 4 degrees. What they want to do is far more significant than what these two eruptions caused, and irreversible once started. There are better methods, such as true green city projects, most of the ones... [More]
Comment icon #38 Posted by Doug1o29 on 5 December, 2018, 14:19
It doesn't have to be any one method.  It could be a mix of techniques.  My guess is we haven't yet invented the one we'll eventually use. Tamboura barely left a wiggle in the tree ring record in Oklahoma.  There's a mystery triplet for 1824-1826.  Maybe a delayed response to Tamboura, but probably not.  It shows up as a drought in most analyses, but I have my doubts.  Krakatoa, on the other hand, was probably the cause of the worst winter on record for the Great Plains.  They're still telling stories about how bad it was. In a "perfect" world, we would only want to drop the temps about 0.5 de... [More]
Comment icon #39 Posted by Doug1o29 on 5 December, 2018, 14:20
The next one is due in 8000-10,000 years.  So it's true that one is due - we're just going to have to wait awhile. Doug


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