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OKIsItJustMe

(19,938 posts)
Wed Dec 17, 2014, 05:08 PM Dec 2014

Cost of cloud brightening for cooler planet revealed

http://www.manchester.ac.uk/discover/news/article/?id=13534
[font face=Serif][font size=5]Cost of cloud brightening for cooler planet revealed[/font]

16 Dec 2014

[font size=4]University of Manchester scientists have identified the most energy-efficient way to make clouds more reflective to the sun in a bid to combat climate change.[/font]

[font size=3]Marine Cloud Brightening is a reversible geoengineering method proposed to mitigate rising global temperatures. It relies on propelling a fine mist of salt particles high into the atmosphere to increase the albedo of clouds – the amount of sunlight they reflect back into space. This would then reduce temperatures on the surface, as less sunlight reaches the Earth.

Clouds form when water droplets gather on dust or other particles in the air. Increasing the amount of salt particles in the atmosphere allows more of these water droplets to form, making the clouds denser and therefore more reflective.

A new paper, published in the journal Philosophical Transactions of the Royal Society A, has looked at four different ways of getting the particles into the sky, to compare how effective they may be. The researchers found that a technique called the ‘Rayleigh Jet’ proved to be best.

Named after Lord Rayleigh, who provided the theory, the technique relies on spraying a fine jet of water that breaks down into small droplets into the sky. The liquid droplets evaporate quickly, leaving behind just the salt particles.

…[/font][/font]
http://dx.doi.org/10.1098/rsta.2014.0056
32 replies = new reply since forum marked as read
Highlight: NoneDon't highlight anything 5 newestHighlight 5 most recent replies
Cost of cloud brightening for cooler planet revealed (Original Post) OKIsItJustMe Dec 2014 OP
well that couldn't go wrong d_r Dec 2014 #1
Added benefit: The rain will ferment the plants! immoderate Dec 2014 #2
I don’t mean to advocate for doing this, neither do the authors OKIsItJustMe Dec 2014 #4
I was just kidding d_r Dec 2014 #23
What is it about the interactive nature of complex systems that these guys don't get? GliderGuider Dec 2014 #3
So if we just don't do anything, we will be fine? Agnosticsherbet Dec 2014 #5
No, if we don't do anything then we won't fuck the place up any worse. GliderGuider Dec 2014 #6
We are fucking the place up at an epic pace. Agnosticsherbet Dec 2014 #8
Doing random stuff is guaranteed to get us there faster. GliderGuider Dec 2014 #9
If you read the article, no one is advocating "doing random stuff." Agnosticsherbet Dec 2014 #11
You misunderstand. I suggest not doing "anything" GliderGuider Dec 2014 #16
If you are suggesting we shut down the global economy are you voluntering to be one of the 9/10ths Agnosticsherbet Dec 2014 #21
I'll die with everyone else, I have no problem with that. GliderGuider Dec 2014 #28
Judging by geologic history OKIsItJustMe Dec 2014 #26
Indeed. I think we should let her get on with the job. nt GliderGuider Dec 2014 #29
Well, it might get us there faster, but it’s not guaranteed OKIsItJustMe Dec 2014 #12
You assume there's a correct response. I disagree. GliderGuider Dec 2014 #17
Ah, well, then, since, in your opinion, it doesn’t matter what we do… OKIsItJustMe Dec 2014 #19
Why don't YOU try to "do something positive"? GliderGuider Dec 2014 #20
You believe that doing nothing is doing something positive. OKIsItJustMe Dec 2014 #25
You know what I believe without asking? I'm impressed. GliderGuider Dec 2014 #27
Not burning coal is "doing nothing", and would be tremendously helpful . . . hatrack Dec 2014 #32
There are no solutions The2ndWheel Dec 2014 #15
Very nice philosophically, but not terribly good from a practical standpoint OKIsItJustMe Dec 2014 #18
What things can be done which produce little if any effect? The2ndWheel Dec 2014 #31
I prefer, “When you push on a system, the system pushes back.” OKIsItJustMe Dec 2014 #10
I'm really glad to see I'm not the only scoffing skeptic Demeter Dec 2014 #7
And it's Ocean Acidification FTW! hatrack Dec 2014 #13
Just checking… OKIsItJustMe Dec 2014 #14
From what I read, this is not meant as a solution to ocean acidification. Agnosticsherbet Dec 2014 #22
Right. I was just trying to clarify a cryptic remark. OKIsItJustMe Dec 2014 #24
Precisely! hatrack Dec 2014 #30
 

immoderate

(20,885 posts)
2. Added benefit: The rain will ferment the plants!
Wed Dec 17, 2014, 05:29 PM
Dec 2014

Peter Piper will be able to actually pick a peck of pickled peppers!

--imm

OKIsItJustMe

(19,938 posts)
4. I don’t mean to advocate for doing this, neither do the authors
Wed Dec 17, 2014, 05:46 PM
Dec 2014


“I am not recommending that we use any of these techniques now, but it is important to know how best to use them should they become necessary. Should no progress be made to reduce CO2 levels, then geoengineering techniques, similar to this, might become necessary to avoid dangerous rises in global temperatures.”


You’re better off planning ahead how to get out of a burning building—even though you don’t plan on having a fire—rather than waiting for a fire to figure things out “on the fly.”


This method does not appear to be irreversible.


These particles, say the paper’s authors, could be generated from specially built ships that could travel the world’s oceans spraying salt particles into the air where they then hang in the atmosphere for several days until they return to Earth as rain.

 

GliderGuider

(21,088 posts)
3. What is it about the interactive nature of complex systems that these guys don't get?
Wed Dec 17, 2014, 05:42 PM
Dec 2014
"The chief cause of problems is solutions."
~Eric Sevareid

Agnosticsherbet

(11,619 posts)
5. So if we just don't do anything, we will be fine?
Wed Dec 17, 2014, 06:42 PM
Dec 2014

The human race is already experimenting with geo engineering in epic ways. And most of those methods have a negative outcome.

 

GliderGuider

(21,088 posts)
6. No, if we don't do anything then we won't fuck the place up any worse.
Wed Dec 17, 2014, 06:51 PM
Dec 2014

The first rule of holes: "When you realize you're in one, stop digging."
That seems like a good beginning to me.

Agnosticsherbet

(11,619 posts)
8. We are fucking the place up at an epic pace.
Wed Dec 17, 2014, 06:58 PM
Dec 2014

Not doing anything means we are going to hell in a hand basket at an epic pace.

 

GliderGuider

(21,088 posts)
9. Doing random stuff is guaranteed to get us there faster.
Wed Dec 17, 2014, 07:08 PM
Dec 2014

I'm in favour of not speeding things up any more than we have to.

Agnosticsherbet

(11,619 posts)
11. If you read the article, no one is advocating "doing random stuff."
Wed Dec 17, 2014, 07:18 PM
Dec 2014

White clouds do reflect light and heat.

The idea is to use a natural feature of clouds as a brake on an accelerating greenhouse affect.

They are not proposing we throw dog biscuits in the air, and perform an Indian Rain Dance, or sacrifice a million goats to George Bush.

From everything I've read, they have not suggest we go balls to the walls and seed the entire planet.

Experimentation could be used to test the theory.

Doing nothing is not working. Changing to greener forms of energy will not be sufficient to stop the warming.

Humanity is already doing random things with carbon and other greenhouse gasses. Creating clouds and using a fundamental feature of clouds to reflect heat and light away is not random.

 

GliderGuider

(21,088 posts)
16. You misunderstand. I suggest not doing "anything"
Wed Dec 17, 2014, 07:48 PM
Dec 2014

As in, shut down the global economy and let Mother Nature sort it out - she does such things best.

OTOH, we will not succeed in doing anything to ameliorate the situation in the time we have left, so we might as well just keep on doing what we're doing.

Agnosticsherbet

(11,619 posts)
21. If you are suggesting we shut down the global economy are you voluntering to be one of the 9/10ths
Wed Dec 17, 2014, 08:03 PM
Dec 2014

of the human race that must drink that last glass of Kool-Aid to save the planet? That's noble.

I think that even if we can not succeed, the only humane thing to do is to try to do something to fix the problem. Better to rage against the dying of the light than to go willingly into the dark.

 

GliderGuider

(21,088 posts)
28. I'll die with everyone else, I have no problem with that.
Wed Dec 17, 2014, 08:29 PM
Dec 2014

Rage all you want! I don't like the feeling of rage, so I try not to. I do enjoy mentioning from time to time that there are other options besides rage and screwing with Mother Nature more and more.

OKIsItJustMe

(19,938 posts)
26. Judging by geologic history
Wed Dec 17, 2014, 08:18 PM
Dec 2014

Mother Nature will have things sorted out by herself in 500,000 years or so.

OKIsItJustMe

(19,938 posts)
12. Well, it might get us there faster, but it’s not guaranteed
Wed Dec 17, 2014, 07:22 PM
Dec 2014

(Assuming there’s a correct response. “Doing random stuff,” might produce the correct response by pure chance.)

In any case, that’s the whole point of this exercise: i.e. to not do random stuff, but well thought out stuff.

 

GliderGuider

(21,088 posts)
17. You assume there's a correct response. I disagree.
Wed Dec 17, 2014, 07:49 PM
Dec 2014

At this point there is nothing we can do to fix it, so by doing things - planned or random - we're just amusing ourselves to death.

OKIsItJustMe

(19,938 posts)
19. Ah, well, then, since, in your opinion, it doesn’t matter what we do…
Wed Dec 17, 2014, 07:56 PM
Dec 2014

Why not try to do something positive. Even if it is just to amuse ourselves?

 

GliderGuider

(21,088 posts)
20. Why don't YOU try to "do something positive"?
Wed Dec 17, 2014, 08:00 PM
Dec 2014

I'll do whatever I think is right for my own amusement, thanks.

I think it's OK for people just to do whatever they think/feel is right.

OKIsItJustMe

(19,938 posts)
25. You believe that doing nothing is doing something positive.
Wed Dec 17, 2014, 08:17 PM
Dec 2014

Doing nothing is not doing something positive.

It is doing nothing.

 

GliderGuider

(21,088 posts)
27. You know what I believe without asking? I'm impressed.
Wed Dec 17, 2014, 08:24 PM
Dec 2014

As you say, doing "nothing" isn't positive, it's doing nothing. That's what I would prefer, but we won't do nothing, will we? We can't stop doing things. So act away, don't pay any attention to me.

hatrack

(59,585 posts)
32. Not burning coal is "doing nothing", and would be tremendously helpful . . .
Thu Dec 18, 2014, 12:43 PM
Dec 2014

However, it appears that any such similar inaction, such as failure to mine, refine and ship tar sands crude, failure to frack, failure to capture CO2 and use it to reinvigorate old oil wells - all are inactions we're not capable of doing (or not doing, if you prefer).

Inactions like these are very possibly the only chance we've got at preserving even a pale shadow of the biosphere as we have known it.

See anybody - corporate, governmental, scientific, technological sectors - boldy taking inaction these days? Yeah, me neither.

The2ndWheel

(7,947 posts)
15. There are no solutions
Wed Dec 17, 2014, 07:42 PM
Dec 2014

We do whatever we do, and have to deal with the consequences. That's it. It just goes on and on like that. Some of those consequences are positive, and some are negative. Of course anyone's particular definition of positive and negative can be different than that of someone else.

That's what makes it all so...I don't know the right word for it. We can't do nothing, as existing requires doing something. We can't escape that. Whatever we do though, doesn't fix anything. It just changes it. There's an upside to the change, whatever it may be, but always a downside as well. Again, upside/downside, subject to personal perspective.

There is no perfect state of existence that we can get to where everything will be fine, because we can't take every variable into account. Nature, or whatever someone wants to call it, can't even do it. The balance is always changing. Life also requires death. We don't like death, and actively try to prevent it, everywhere, all the time. No form of life likes death, which is why every form of life will struggle for its life if need be. However, no other species fights the reality of existence the way we do, because they can't. We can't either, but we think we can, which is how we've found ourselves in this predicament.

OKIsItJustMe

(19,938 posts)
18. Very nice philosophically, but not terribly good from a practical standpoint
Wed Dec 17, 2014, 07:54 PM
Dec 2014

I trust you will agree that there are things which can be done which produce little if any effect, that anyone would consider to be positive.

For example: Let’s solve the problem of climate change by sanitizing the planet with high-yield thermonuclear weapons (say wide use of the “Tsar Bomba.”)

I just don’t see where there is much of an upside to that.

So, in my view, it does matter what we do.

The2ndWheel

(7,947 posts)
31. What things can be done which produce little if any effect?
Thu Dec 18, 2014, 11:36 AM
Dec 2014

Why would they be done? Who would do something, get X as a result, then change what they're doing, get the same X as a result, and consider that a positive?

Write something on a piece of paper with a blue pen, then write something on a piece of paper with a red pen. Is that a positive step?

I agree with you that what we choose to do can and does matter, all I'm saying is that what we choose to do won't fix anything. It just changes the equation. Domestication of animals, a positive for human beings over time, but now we have a hell of a lot of people that need to be fed and need jobs. Plus we have to maintain the animals and all the infrastructure required to maintain them.

OKIsItJustMe

(19,938 posts)
10. I prefer, “When you push on a system, the system pushes back.”
Wed Dec 17, 2014, 07:14 PM
Dec 2014

Or… “If you push something hard enough, it will fall over.” — Sir Sidney Fudd

The thing is, we have already interfered with the natural functioning of the system. So, before we jump into a “solution,” we need to think really hard about it first. That’s what these guys are doing.

 

Demeter

(85,373 posts)
7. I'm really glad to see I'm not the only scoffing skeptic
Wed Dec 17, 2014, 06:56 PM
Dec 2014

The complexity of the global weather system hasn't been modeled to any degree of accuracy. Putting more random variables into the mix to "experiment" is not science, it's gambling with all life on earth.

OKIsItJustMe

(19,938 posts)
14. Just checking…
Wed Dec 17, 2014, 07:26 PM
Dec 2014

Your point is that this measure would do nothing to address the problem of ocean acidification. (Correct?)

Agnosticsherbet

(11,619 posts)
22. From what I read, this is not meant as a solution to ocean acidification.
Wed Dec 17, 2014, 08:04 PM
Dec 2014

That is a horse of a different color.

OKIsItJustMe

(19,938 posts)
24. Right. I was just trying to clarify a cryptic remark.
Wed Dec 17, 2014, 08:16 PM
Dec 2014

“And it's Ocean Acidification FTW!”

This tactic would not address the problem of ocean acidification, and, so, is, at best, a “partial” solution.

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