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Study maps correlation between busy shipping lanes and more intense thunderstorms

Study maps correlation between busy shipping lanes and more intense thunderstorms

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A study led by scientists at the University of Washington claims ship emissions bring more intense lightning and thunderstorms above the world’s busiest tradelanes.

The results of the analysis were published this week in the journal Geophysical Research Letters.

The study mapping lightning around the globe found lightning strokes occur nearly twice as often directly above heavily-trafficked shipping lanes in the Indian Ocean and the South China Sea than they do in areas of the ocean adjacent to shipping lanes that have similar climates.

Aerosol particles emitted in the exhaust of ships are changing how storm clouds form over the ocean, the scientists claim. The particles from ship exhaust make cloud droplets smaller, lifting them higher in the atmosphere which in turn creates more ice particles and ultimately more lightning.

“It’s one of the clearest examples of how humans are actually changing the intensity of storm processes on Earth through the emission of particulates from combustion,” said lead author Joel Thornton, a professor of atmospheric sciences at the University of Washington.

Of 1.5bn lightening strikes analysed across the globe from 2005 to 2016 the team found nearly twice as many lightning strokes on average over major tradelanes in the northern Indian Ocean, through the Strait of Malacca, and into the South China Sea, compared to adjacent areas of the ocean that have similar climates.

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Sam Chambers

Starting out with the Informa Group in 2000 in Hong Kong, Sam Chambers became editor of Maritime Asia magazine as well as East Asia Editor for the world’s oldest newspaper, Lloyd’s List. In 2005 he pursued a freelance career and wrote for a variety of titles including taking on the role of Asia Editor at Seatrade magazine and China correspondent for Supply Chain Asia. His work has also appeared in The Economist, The New York Times, The Sunday Times and The International Herald Tribune.

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1 Comment

  1. Ed Enos
    September 8, 2017 at 6:32 pm

    Could it be that the “observations” are greater because that’s where they observers actually are? If you placed a man in a dinghy in the middle of the ocean far away from traffic lanes for the same amount of time and made observations of weather, what would he find? Sounds like another conclusion to fit the theory.

    That being said, I guess the ‘solution’ would obviously be to simply stop all world trade and movement of ships across our oceans. that would bring about an instantaneous change in global weather patterns virtually overnight, eh? Ha Ha Ha!! Cheers!