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Pollution from ships is changing maritime weather

Discussion in 'Energy, Environment, and Policy' started by mblakele, Oct 5, 2017.

  1. mblakele

    mblakele radial cross member

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    Lighting strikes are double the average in shipping lanes

    https://www.economist.com/news/science-and-technology/21729974-lighting-strikes-are-double-average-shipping-lanes-pollution-ships

    MODERN, broad-beamed merchant vessels are well able to withstand the rough and tumble of the waves, but sailors still prefer to avoid storms at sea if they can. Containers may come loose in heavy weather and there is always a chance of lightning knocking out communications. It is therefore ironic that some storms may be caused by ships themselves. That, at least, is the conclusion reached by Joel Thornton of the University of Washington, in Seattle, and his colleagues in a paper just published in Geophysical Research Letters. They demonstrate that lightning strikes the Indian Ocean and the South China Sea almost twice as often along shipping lanes as it does other areas of these waters.

    ...

    The most likely explanation is particulate pollution emitted by the ships using the shipping lanes. Marine diesel burned offshore is generally high in sulphur, and its combustion produces soluble oxides of that element which act as nuclei for the condensation of cloud-forming droplets. Typical marine clouds in unpolluted areas are composed of large droplets and do not rise to high altitude, but Dr Thornton and his team reckon that smaller droplets, of the sort that condense around oxides of sulphur, might more easily be carried upward by convection—forming, as they rose, into towering storm clouds that would act as nurseries of lightning bolts.

    ...

    ...for any who may doubt humanity’s ability to affect the weather, Dr Thornton’s work provides strong evidence that it can.
     
  2. Olle

    Olle Member

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    Yet another reason to power ships by battery instead of oil. Good candidates due to low power/weight ratio
     
  3. gavine

    gavine Petrol Head turned EV Enthusiast

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    And plenty of room for solar panels.
     
    • Like x 1
  4. Ulmo

    Ulmo Active Member

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    According to this excerpt from https://www.economist.com/news/finance-and-economics/21718519-new-ways-foot-hefty-bill-making-old-ships-less-polluting-green-finance?fsrc=scn/tw/te/bl/ed/:
    Ships are very dirty. Here's some ideas to stop it:
    • Since there's overcapacity, just sink any ships that attempt to dock that put out too much pollution; capacity will go down, and the economical outlook for polluting ships would make them too expensive to keep, so they'd be scrapped.
    • Sink the ships as they pollute out in international waters. No one will notice.
    • Reduce the amount of goods transported across the ocean. Some materials are hard to obtain without having ships; figure out what those materials are, allow them only in their first raw to concentrated forms on ships, and then put heavy tariffs on any other materials. Ships are hostages to ports, so this should be easy. If ports slow down during implementation, that's fine: less shipping would depend on ports if ports slow down.
    • Yes, it seems like ships are a great candidate for solar and battery, but as long as the economics allow polluting transit, they will not convert unless it is way cheaper to go clean. Make polluting ships expensive: every time a ship is caught polluting, just sink it. The expense of continuing to pollute would far exceed the cost to convert to clean energy.
    I think ships are a sitting duck. Why are we putting up with pollution from them? I'm quite frankly tired of pollution continuing in the year 2017 when there's so many other options.
     
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  5. kort677

    kort677 Active Member

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    so you're advocating sinking ships in place? hmmmm I guess all those fuel laden ships won't have any impact on the waters that you'd sink them in.
     
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  6. Saimaannorppa

    Saimaannorppa Member

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    Battery power is only viable for short distances, e.g. local ferry. We delivered one with wireless charging ... 1MW charging capacity, quite impressive.

    For longer distances LNG is the future. Current ships can be converted for LNG and they emit only water and CO2...
     
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  7. Johann Koeber

    Johann Koeber Member

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    Sails are a wonderful way to use solar power (in form of wind) at sea.
     
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  8. kort677

    kort677 Active Member

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    so you're saying that we should step back from 150+ years of advances in maritime propulsion? if sails were efficient they would never have been surpassed by steam then oil and nuclear fueled engines.

    here's an idea, in order to employ the people displaced by the displacement of factory workers, drivers, accountants librarians and so we could go back to a combination wind and human propulsion of shipping
     
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  9. Saimaannorppa

    Saimaannorppa Member

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    This is catching wind, pun intended: Home
     

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