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Geoengineered Climate Cooling With Microbubbles

Rambo Tribble writes: Scientists from the University of Leeds have proposed that brighter ships' wakes, created by reducing their component bubbles' sizes, could moderately increase the reflectivity of our oceans, which would have a cooling effect on the climate. The technology is touted as being available and simple, but there could be side effects, like wetter conditions in some regions. Still, compared to many speculative geoengineering projects, "The one advantage about this technology — of trying to generate these tiny 'micro-bubbles' — is that the technology does already exist," according to Leeds' Prof Piers Forster.

6 of 114 comments (clear)

  1. What percentage... by Gumby · · Score: 4, Informative

    Not saying I believe the magnitude of the effect, but from the article:

    """The team used a computer model to calculate what would happen if 32,000 large ships - the current estimate of large vessels on the high seas - produced tinier bubbles.
    "If we were to successfully put these generators on to these ships, and the ships just went about their normal business, we did find there was potential to reduce the surface temperature by about 0.5C," Prof Forster said"""

  2. Re:What percentage... by Anonymous Coward · · Score: 3, Interesting

    You'd be surprised what kind of effect ship wake can have on ocean albedo. You should give that study a read! It's really interesting, even if you're not typically into geophysics.

  3. Re:Makes no sense by plopez · · Score: 3, Funny

    Well, here is what we do. We get a bunch of poor people, right? Then you give them water skis and hook them up to the back of the ships. They then water ski behind the ship creating the needed bubbles. Climate change reversed and unemployment drops. A win-win!

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    putting the 'B' in LGBTQ+
  4. ...the biggest polluters *in some compounds* by Overzeetop · · Score: 3, Interesting

    FTFA,
    "these powerplants are some of the most fuel efficient units in the world"

    "the 15 largest ships in the world emit as much nitrogen oxide and sulphur oxide as the world’s 760 million cars"

    So it's not really the climate-affecting carbon emissions that make these vessels "polluters" but rather that they use a fuel which contains excess sulfur and inefficiently scrub nitrogen-based compounds from the emissions, things that autos don't contend with or do because of regulation. It turns out that instead of 50 million cars, the biggest ship in the world put as much carbon into the atmosphere as about 15000-18000 cars. (109k HP @ super high efficiency vs 100HP in your typical automobile, factored for 280days@24h/dy vs average car at 400h/yr)

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    Is it just my observation, or are there way too many stupid people in the world?
  5. sjeee.... by SuperDre · · Score: 3, Interesting

    What could possible go wrong............. We don't even have the computerpower to precisely predict the weather, and they think they can change the climate with this without real consequences?

  6. Re:Large ships are some of the biggest polluters by ShanghaiBill · · Score: 4, Informative

    World’s 15 Biggest Ships Create More Pollution Than All The Cars In The World

    This is nonsense. It is only true for sulfates and nitrates. But sulfates and nitrates are only a concern on land, where they are inhaled, or damage buildings or crops. When emitted by ships, they are funneled to the side where they stay low and quickly settle onto the ocean surface. Since the ocean already contains quadrillions of tons of sulfur and nitrates, this addition is utterly inconsequential.