Cooling the Planet With a Bubble Bath

cremeglace writes "A Harvard University physicist has come up with a new way to cool parts of the planet: pump vast swarms of tiny bubbles into the sea to increase its reflectivity and lower water temperatures. 'Since water covers most of the earth, don't dim the sun,' says the scientist, Russell Seitz, speaking from an international meeting on geoengineering research. 'Brighten the water.' From ScienceNOW: 'Computer simulations show that tiny bubbles could have a profound cooling effect. Using a model that simulates how light, water, and air interact, Seitz found that microbubbles could double the reflectivity of water at a concentration of only one part per million by volume. When Seitz plugged that data into a climate model, he found that the microbubble strategy could cool the planet by up to 3C. He has submitted a paper on the concept he calls “Bright Water" to the journal Climatic Change.'"

Comments

Tiny Bubbles?

[gyrogeerloose]

Has he cleared that with Don Ho?

Crazy

[WrongSizeGlass]

What about the sea life that relies on that heat?

Re:Crazy

[maxwell demon]

Actually you would not need to go to the spectrum. Since the bubbling water reflects more sunlight (which is what the cooling effect is based on), less sunlight enters the water. Less sunlight = less photosynthesis.

Less photosynthesis means less production of biomass, which I'd guess has a negative effect on the ecosystem. But less photosynthesis also has the effect of less consumption of CO2, so at the end this idea may actually have the opposite effect from what was intended.

Re:Crazy

[aurispector]

Geoengineering is such a spectacularly bad idea as to warrant armed revolt in order to prevent it. History has shown again and again that scientists understand far less about the complexity of natural systems than they think they do. Just look at the eggs: back in the day they were considered good, nutritious food. Then suddenly they were demonized for their cholesterol content. Oops! Guess again! They're a good source of omega fatty acids and really are good for you!

The law of unintended consequences comes into play as well. They guy is using a mathematical model. What's the model missing? "Garbage in, garbage out" is not a principle we want to apply to altering the global environment.

Any efforts to reverse "Anthropogenic global warming" should be confined to reducing the supposed causes. What's our incentive to stop polluting if we can "fix" it by blowing bubbles in the ocean?

No mention of

[Rik Sweeney]

a rubber duck. It's not a proper bubble bath without a rubber duck.

Re:No mention of

[rkit]

There is no lack of rubber ducks in the ocean.

Same problems

[Bozzio]

Don't all these crazy "reflect back light somewhere in the ocean" have the same problem?
Whether you're covering the ocean with a white tarp, stretching tin-foil over a large number of floaters, or creating loads of tiny bubbles you're still depriving the ecosystem of light it is most likely dependent on.

No light, no plankton, no life.

Am I wrong?

Yesbut...

[bmo]

It would also increase evaporation and thusly the amount of water vapor in the air. Water vapor is more effective than CO2 at increasing global warming.

Have you thought of that? No? Didn't *think* so!

He also says that energy is not a limiting factor. He's a kook.

--
BMO

Re:Yesbut...

[phantomfive]

What is more likely, that a climate scientist at Harvard has overlooked a simple yet obvious factor in his experiment, or you are too lazy to read the article?

As a matter of fact the article mentions evaporation, suggesting that bubbles actually reduce the evaporation. If anyone is a kook in this situation, I would put odds on you (but it's more likely you're just lazy).

Re:Yesbut...

[bunratty]

Excess water vapor in the atmosphere quickly precipitates out as rain or snow. Consequently, you can't increase global warming significantly only by attempting to add water vapor to the atmosphere. If the temperature increases, that can cause humidity to increase, and that can cause additional warming. In climatology, you say that water vapor is a feedback, not a forcing.

Yes, I know, I'm ruining everybody's fun by mentioning facts again. What a party pooper!

Re:Yesbut...

[bmo]

I read the article.

He says the bubbles would slow down evaporation in lakes and streams (i.e., where he's not using the system). This is only because he's increased overall humidity from the evaporation of the ocean with his bubble toy.

Ever see bubbles burst with fast film? They create droplets which increases surface area. Evaporation is dependent upon surface area, temperature, vapor pressure, and barometric pressure. Increase any of these and you increase the amount of water vapor in the air. Doing this over a large area increases the surface area for evaporation to happen by a large amount

It's like you people have forgotten the most basic physics.

And yes, he's a kook. Only a nutjob would come up with something as ridiculous as this.

--
BMO

Bermuda Ocean

[engineer_uhg]

Tiny bubbles are also good for sinking ships. Decrease the density of the water, decrease the buoyant force on the boats. Source

Before you muck about .....

[gestalt_n_pepper]

Before you start mucking about with geo-engineering the temperature, you'd better make damn sure you can UN-muck it or we're all seriously mucked!

What this means is:

1) Thousands of gyroscopically positionable mirrors in space allowing you to control sunlight = Good!

2) Planting oodles of trees everywhere we can do distribute the heat that we do have = "Well, OK, it'll work for most of the planet as long as you don't plant trees that are disease vectors for other organisms."

3) Throwing thousands of tons of [Insert favorite substance here] into the atmosphere/Ocean/Volcanoes and hoping it works and not having a clue as to the knock-on effects down the road = BAD, BAD, BAD.

Cheers!

Re:Cue Don Ho song...

[Red Flayer]

Don Ho:

Tiny bubbles (tiny bubbles)
Make me warm all over

FTS:

'Computer simulations show that tiny bubbles could have a profound cooling effect.

Either this physicist is full of shit, or Don Ho was.

Re:Tiny Bubbles

[QRDeNameland]

Difference between Funny and Redundant 1 minute. Duly noted.

Re:I still say we just move the Earth

[maxwell demon]

Don't move the earth. Instead reduce energy production of the sun. Besides countering global warming, it also has the effect of increasing the sun's lifetime, because it uses up its fuel more slowly.

We just have to find the knob where to change the setting.